GTA
All Springer/NP/PCP Air Gun Discussion General => PCP/CO2/HPA Air Gun Gates "The Darkside" => Topic started by: Rdsail on August 30, 2013, 12:42:07 PM
-
I installed the BNM breech on my disco. I Think it looks great.
Accuracy: from 19 yards- Stacks pellets. One ragged hole
Power: This is were I got a little disappointed. I lost 100fps with JSB 18.1 It is maxing out at 850 foe. (29.1 FPE) before I was maxing out at 940 FPS with the same spring.( .041 hammer with 3 coils off) I took it apart and increase the size of the tport by .05 that did not seam to do much. I might try using the disco hammer instead of the prod hammer but if accuracy stays this way I might just leave it like it is of go for a full heavy spring. Checked very well and not leaks
No the fun part, the pictures:
(http://farm6.staticflickr.com/5489/9627612863_74919b7128_c.jpg)
(http://farm8.staticflickr.com/7288/9627612939_dbafec75d9_c.jpg)
(http://farm4.staticflickr.com/3706/9627613589_c8e4870609_c.jpg)
(http://farm8.staticflickr.com/7396/9630844616_1b35ac5daa_c.jpg)
(http://farm4.staticflickr.com/3688/9630845234_c1ed6e3036_c.jpg)
(http://farm6.staticflickr.com/5523/9627613289_5dc38bbf2e_c.jpg)
(http://farm4.staticflickr.com/3815/9630845020_127b951e24_c.jpg)
-
And the cocking effort is smooth and effort less
-
Looks good Daniel!!!!
Matt
-
Awesome looking rifle.
-
Looks nice. Don't go to a heavier spring or you will likely run into cocking problems like I did. Can you turn your adjuster in more to see how the power increases? If not then I would say to try a .041" spring with just 1 coil cut off.
-
sqrl,
I'm using the .041 spring with 2 coils off. I can only adjust from 820 to 850. 850 is coil bind. I'm not planning to put a heavier spring. I'm going to swap the prod hammer with the original disco hammer. This will be a little heavier and also I would have a 1/8 in more of travel because I remove that much to compensate for the the loss in travel with the prod hammer.
Here are the bad news. (second time this has happened) I was going to swap the hammers and I stripped the stuck slug screw. When I build the bottled disco I used my old tube where the threads of the slug where not in good shape (that was the main reason I got a new tube). So it happened again. I just got off the phone with crosman and order a replacement with a few other goodies. This is a bummer. I wanted to shoot real bad specially with the accuracy that I was getting.
If I can't increase the power, that will not be a big deal I rather stay accurate like it is right now.
Daniel
-
I stripped the stock screw hole as well. In my case Lloyd tapped the hole and made a new screw for it. Just grip the stock and tube together with your hand tightly then tighten the screw gently so the screw is not doing all the tightening and the problem won't reoccur. It doesn't have to be real tight to hold the stock good.
I'd say right now if you're only shooting small critters at around 35yds then your power is sufficient right now but you can increase power to where you want it. May only take another .041" spring but if not then you could try another .05" increase of the transfer port, a hammer having a stroke adjuster, or even valve work too, but you can get it there.
-
Gorgeous rifle. Great job.
Brett
-
My disco is capable of 40 fpe with the regular tube and current valve work. The only thing I left stock was the Tport. Which I can increase in size. With the bottle I have enough plenum for about 36 fpe. But optimum is 30 to 33. Once I put the breech I went to Just under the optimum at 29 fpe. I was specting to loose some power but not 90 fps. I cut my new tube and I'm pressure testing it right now. I does not look to have any leaks. Now I have to wait for the new slug screw to come in.
-
Gorgeous rifle. Great job.
Brett
Thank you
-
Seriously gets my vote for sexiest disco. Great job building it up.
-
Thank you cliff
-
Yep, best looking Disco I've seen! Good Job!
-
sqrl,
I'm going to swap the prod hammer with the original disco hammer. This will be a little heavier and also I would have a 1/8 in more of travel because I remove that much to compensate for the the loss in travel with the prod hammer.
What is the weight difference between the Prod hammer and the Disco Hammer ?
Bill
-
It's a little heavier but I don't know how much.
-
What gun is the trigger guard from? How heavy is the rifle? Wondering if the bottle makes it feel barrel heavy or if the gun feels well balanced. Looks like the scope being so far back may make you have to lean your head back to see the scope view when you shoot too instead of natural forward head placement.
-
Sqrl,
The trigger guard I made. I have not weight the disco
But is much heavier than your reg disco but lighter than an mrod. If i had the disco stock it would be too front heavy. When first added
The bottle it was a little front heavy but now with the breach and heavier scope is perfect. I have not finalize the scope position. Waiting for one part for Crosman to put it back together. One thing with the scope. I added butt extensions to make my arm more constable so the scope will be farther back than normal.
Daniel
-
That is probably one of the coolest Discos. I have ever seen! Great job!
-
Daniel (RDsail)
did you add a shroud/cover over the bottle adapter?
i don't remember seeing it during your build
sure does make a clean looking mod ;D
(http://farm6.staticflickr.com/5523/9627613289_5dc38bbf2e_c.jpg)
-
I used a piece of plastic from a 3 hole binder I got at a office supply store. I cut it to fit the gauge and burst disc fitting and go around the bottle. This hides the empty space from the adaptor and bottle.
-
if anyone is wondering how much my setup weight I finally measure it today. This includes bipod and scope. It came to 9.2 lb all together.
-
a couple of groups from 40 yards. It took me a little while to get in the groove. It was a little hot and humid.
Both of these are from 40 yards and a full magazine of 10 each. Shooting JSB 18.1 at 870 fps or 30.5 FPE.
The second had a flier which it was most likely me.
(http://farm6.staticflickr.com/5476/9724486313_b40dbf32c0.jpg)
(http://farm4.staticflickr.com/3810/9724484299_efd13be4f6.jpg)
-
looks good 870 is prime power zone!
-
This thread just keeps getting better and better. Great work man.
-
Fantastic build Dan!
I am following as I plan to do very similar things to mine.
I am going to try to start with a high pressure reg. on the bottle, so maybe 1800-2000.
Same sized plenum(5.5-6")
I think there are some gains to be made to machine the bolt flaring parabolic into the probe, make the probe throat thinner and end in a tear shape where it pushes the pellet.
Anyway, cant wait for updates.
T
-
Tom,
Thank you. I have this other post run. http://www.gatewaytoairguns.org/GTA/index.php?topic=52276.msg504096#msg504096 (http://www.gatewaytoairguns.org/GTA/index.php?topic=52276.msg504096#msg504096)
I've been working on the bribe and had some gains in power.
this are the numbers I'm getting.
High: 877 (31 FPE)
Low: 871 (30.5 FPE)
Ave: 873.6 (30.7 FPE)
SD: 1.58
Extreme Spread: 6 FPS or 0.69%
Shots: 60
It is so nice that I don't want to touch it.
-
I had to make a new Transfer port to be able seal it properly to the barrel and valve do to the porting.
this is my best group I've shot with it so far.
40 yards - Group of 5 - light wind - about 74 degrees
(http://farm4.staticflickr.com/3765/9987575144_e7a8691d23_b.jpg)
And from center to center.
(http://farm4.staticflickr.com/3687/9987606556_9148048498_b.jpg)
I'm happy as I could be.
-
Great group. I'd be happy with that too. Congrats.
-
I decided I wanted to add a shroud band/bottle band Just to stabilize the barrel a little. more. The band that came with the kit is about 4 in from the breech.
I used some high density PVP foam I had laying around and with the drill press and boring bits I made the openings for the shroud. I did not make the bottle opening go all the way around the bottle.
(http://farm6.staticflickr.com/5490/10041218463_67ac1e7895.jpg)
(http://farm3.staticflickr.com/2835/10052761693_4ce3fefaba.jpg)
I ordered some delrin to make one that is a little more solid.
For the results, it seams to have helped. I shot about 5 groups of 5 and the average group seamed tighter.
Then I went and shot a tree at roughly 67 yards. I'm basing the distance on my focus on the scope and the distance given by Chairgun at 4 mil down. The results where very good. This is a group of 5 with one flyer Which It might of been me because the rest were dead on. I apologize for the bad picture. It is hard to take pictures through the scope. This shots where done 4 mil down at 24x magnification.
Bottom circle are 4 shots and then top/left circle is 1 shot.
(http://farm4.staticflickr.com/3823/10054570015_7c3716d0de_z.jpg)
-
I received the 1/2 in 6x6 delrin sheet and made the new Shroud/bottle band. There are no set screws it stays on by friction. I will see if I eventually need some set screws.
Some pictures:
The two openning have been bored out. One is 2 in and other one is 1 in
(http://farm8.staticflickr.com/7440/10091711095_0cbc70ba16_n.jpg)
Here are of the final product:
(http://farm6.staticflickr.com/5485/10100562903_520eff0714.jpg)
Here it is installed:
(http://farm4.staticflickr.com/3675/10103632925_37853516f8.jpg)
(http://farm4.staticflickr.com/3698/10103635225_88cf0de6a6_z.jpg)
-
Wow...MOST excellent work Daniel, start to finish. GREAT results too. You sure can't argue with the results. Something to REALLY be proud of!!!
Should you decide to sell, I get dibs!!!
:)
-
Thank you Ezman. I really appreciate your words.
Somewhere along the line this Gun became priceless. Being my first PCP and all the mods I have done to it, I don't think I could ever sell it. I know, for sure, I would never get the money back that I have invested, not to mention the time.
But anyone is always welcome to shoot it. I have one more part to complete the setup which is a custom RVA which will allow me to add a longer spring.
-
That's pride and I can relate. THAT'S why I have such a herd of airguns. Some were done by me and some were done by Gene. I would not even consider parting with some of my babies. :D
Like you, anyone is welcome to shoot mine whenever the chance is there. My grandson will inherit most of mine.
;D
-
Here are my latest number after some more modifications to my valve and regulated pressure.
Reg Pressure: 1800 psi
Valve throat: .25"
Transfer Port: .161"
barrel Port: .166"
The string is 40 shots. I went from 3000 psi to 2200 psi.
Pellet: JSB 18.13
FPS FPE
887 31.68
883 31.40
880 31.18
886 31.61
883 31.40
887 31.68
880 31.18
885 31.54
883 31.40
884 31.47
884 31.47
887 31.68
885 31.54
889 31.82
881 31.25
881 31.25
882 31.32
885 31.54
885 31.54
888 31.75
882 31.32
883 31.40
887 31.68
888 31.75
889 31.82
880 31.18
887 31.68
888 31.75
889 31.82
888 31.75
881 31.25
889 31.82
889 31.82
883 31.40
882 31.32
887 31.68
889 31.82
889 31.82
889 31.82
885 31.54
STRING TOTAL FPE 1262.19
STRING TOTAL CU IN USED AT 1 BAR 1211.59
STRING EFFICIENCY 1.04
Average FPE 31.55
High Speed 889.00
Low Speed 880.00
Extreme Spread 9 (1.02%)
Average Speed 885.23
Standard Deviation 3.03 (0.34%)
(http://farm3.staticflickr.com/2819/10557808135_755091d96d_b.jpg)
Accuracy is the same as before.
My spread and SD when up a little but that is no problem. I think I might get a little tighter once the new spring settles in.
The max power I'm getting with the current set up is 950 fps or 36 FPS. A heavier spring might give me more power but I'm not really interested in that.
I did try two inexpensive chinese Regulators. One was 1.8K the other 2.2K (this one was suppose to be 2K) I was not impressed with them. They look just like the ones sold here but they don't seam to regulated as well as the JDS airman regulators. The spread was on the 20 fps or more which I did not like. At least I was able to figure out the 1.8K was a good regulated pressure for me. I was able to increase my efficiency from 0.9 to 1.04 which means I get the same shot count (60) with as with the 1.6K regulated pressure.
Other things I notice. the gun is quieter at 1.8K. Most likely because I'm using less air.
-
Great numbers Daniel!!
T
-
Very nice #'s and it groups great too. Is that with the oem barrel or a replacement? What pellets used?
-
Thank you guys.
The barrel is a crosman barrel I got from Mellon air. I have though many times to replace the barrel with a BSA but this barrel shoots amazing so why bother. I figure I could save the money for another project...Like an mrod .25.
The pellets used is JSB 18.1s. I use this pellet exclusively because it shots the best. I gain about 1 to 2 FPE with heavier pellets but they don't group as well.
-
Daniel, you need to change your sig...to 1800psi ;D
-
Awesome looking gun and awesome accuracy!! Nice job building it yourself!
So how much you want for it? ;D
Harry
-
LOL. Harry can't help but laugh...Please excuse me. I to don't think I could ever sell it after the small fortune and hard work I've put on it in the last 9 months.
Thank you very much for the comment!!!
Daniel
-
Thank you guys.
The barrel is a crosman barrel I got from Mellon air. I have though many times to replace the barrel with a BSA but this barrel shoots amazing so why bother. I figure I could save the money for another project...Like an mrod .25.
The pellets used is JSB 18.1s. I use this pellet exclusively because it shots the best. I gain about 1 to 2 FPE with heavier pellets but they don't group as well.
How much does a BSA barrel cost? Never heard of that brand for disco owners, only Walther and Green Mountain.
-
I believe it is about he same as an LW barrel. you need to order it from England. Then you got to get it machined.
-
Ok why would you prefer a BSA barrel over a Walther that can be bought in the US? I know nothing about BSA barrels is why I ask.
-
From What I have read and talk to other AGners, they are great barrels and even better than LWs
-
Ok thanks for the tip.
-
It was meant to make you laugh Gil :) I know exactly what you mean.
Gil,
BSA makes great barrels. Lothar Walther makes pretty good barrels too, but it's a little hard to compare one to the other. Mainly because LW has various types and levels of barrels (like I have a heavy polygonal LW barrel on 1 of my Condors which is more expensive than a "standard" or "low end" LW barrel (and said to be more accurate). LW will also make custom barrels for you (with a minimum order of 15 barrels I think) with the type of (match) crown you want, lands, choke, length, basically your specs, etc. The BSA barrels are kind of like a mid-to-high end LW barrel. Machined BSA barrels to fit your gun will cost you $225-$250, not much more than LW.
You have to be careful though if you order from someone in the UK. People have gotten ripped off in the past and never saw their barrel after making payment. Best thing to do is find a vendor in the US that can get them.
Harry
-
Great to know Harry thanks. Potentially saved someone from getting ripped off right there. ;)
-
today I got my new rest. I usually shoot with a bipod. I got this one
(http://ecx.images-amazon.com/images/I/410uDdYCIwL.jpg)
http://www.amazon.com/gp/product/B00342XXMS/ref=oh_details_o03_s01_i00?ie=UTF8&psc=1 (http://www.amazon.com/gp/product/B00342XXMS/ref=oh_details_o03_s01_i00?ie=UTF8&psc=1)
here is the best group. It took me a while to get used to the new position with the rest.
(http://farm6.staticflickr.com/5505/11139997136_3bfbf4f08a_b.jpg)
-
Looks awesome, what distance?
T
-
I forgot to say the distance.....40 yards. I almost always shoot from 40. That is the farthest I can shoot in my yard
-
Daniel,
Darn nice shooting for 40 yards!
Lloyd
-
Update on my build:
In Early december I ordered a 26" barrel from TJ and sent it to SeanMP for machining a lot with my BMN Breech and bolt. Yesterday the package finally came in. It took almost 3 full weeks to make it from Canada to Virginia. The wait was killing me.
List of upgrades:
1) Barrel from TJ: ˝ - 26in long - Sean and Bob Specs
2) Probeless Bolt Breech Mod. (retractable bolt)
3) PEEK Valve Poppet
The purpose of this mods are, Increase accuracy, Reduce hammer throw and maintain current power level.
Time for some pictures. Let me say first that Sean did an amazing Job machine all the parts and has a great attention to detail.
A note on the barrel. I pushed a pellet through it an this is the first barrel that I see that the pellet as even pressure the whole length of the barrel, this speak very high of the machining and rifling of the barrel.
The Barrel:
(http://farm6.staticflickr.com/5478/11920696983_63433e5d9b_n.jpg)
(http://farm3.staticflickr.com/2814/11936516255_f0e6301254_n.jpg)
(http://farm3.staticflickr.com/2862/11936795633_53342fee56_n.jpg)
(http://farm4.staticflickr.com/3813/11936965564_30c33d707b_n.jpg)
The Breech
(http://farm8.staticflickr.com/7320/11937361056_ec31cd15a9_n.jpg)
(http://farm6.staticflickr.com/5499/11933318095_cae949c992_n.jpg)
The Bolt
(http://farm4.staticflickr.com/3685/12297815944_94ed2952f5_n.jpg)
I don't have pictures of the poppet because it is still on the way. Once I get it I will put the gun to some real testing.
-
Cant wait Daniel!!!
-
I agree with Tomg, I can't wait to see how it all works for you. Glad to see the barrel in your possession!
-
This build just keeps getting better.
Lloyd
-
Update:
the barrel is installed. I have not been able to do much of accuracy testing because and issue came up. Nothing to do with want Sean did but my own doing. I decided to increase the size of the breech screw. The new skew works great but but I made it to long and it was also getting cough buy the hammer. I have a prod hammer so it as a part taken off. After I shorten the screw. The gun was firing well but the size would hit the screw sometimes. So this fix this it took 3 tare downs all together until I had it right.
From 20 yards it seams very promising. I hole groups is easy to accomplish.
The amazing part is that there is a significant power gain. For the new barrel, I reduced my tport and barrel port from 0.167 to .158, give or take. My high power right now is 980fps with JSB 18.1 when before it was 960. I have it turned down to 890-880fps and it take about half the hammer strike that I used to use. That was surprising. I was not expecting that much of difference. The gun seams to be quieter.
The retractable bolt probe works great. I just need to remember to retract it every time.
tomorrow we are suppose to have bad weather so I'll do pellet testing on sunday if the weather permits.
-
Do you like the feel of the bolt handle?
doesnt look very comfy to me....
-
I have no problems with it.
-
Looking fwd to more testing at longer ranges and more pictures, hint hint, Daniel!
T
-
Daniel,
Is this new barrel longer than the one you took out?
Thanks,
Lloyd
-
Yes Lloyd. By two inches.
-
That gun is beautiful, but why do you hafta make me jealous like that? Im just getting into this, and love my stock disco with a tko brake, but i want to mod it. The problem is, every time i see one of these sweet builds, i wanna start spending time and money i don't have right now. Oh well, someday. For now, I'm gonna lighten the hammer, put in a power adjuster, do the trigger and barrel band and lap the barrel, oh and cut the back of the bolt so i can actually lay a pellet in the breach (idk why they don't do that at the factory?).
Does anyone make nice left handed stocks for these? Whats the bottle setup and regulator worth, where do i look for that stuff and how does it compare to a double kit? Can you explain the retractable bolt? I think i get the concept, but how does it retract, and where does it seal?
Sorry to hijack the thread, but I'm just trying to understand this stuff so i know what i want to do when the day comes. You guys can pm me if you don't wanna clutter up this thread. Any advice is appreciated, thanks!
-
...................................
Does anyone make nice left handed stocks for these? .............................................
Norm at www.discosrus.net (http://www.discosrus.net) has some beautiful left handed thumbhole stocks.
Lloyd-ss
-
you can find the cost of the bottle kit at JDS airman. The bottle kit gives more more air than the double tube but it also has power limitation. you can get a lot more power with the double tube.
The retractable bolt work by pull it backwards, in a J shape. This with not work on a regular disco breech. What seals the probe is an oring in the breech.
I bought my stock from norm and I believe he also sell left handed stocks
-
...................................
Does anyone make nice left handed stocks for these? .............................................
Norm at www.discosrus.net (http://www.discosrus.net) has some beautiful left handed thumbhole stocks.
Lloyd-ss
If he does, he should put em on his website, or at least so you can find em.
you can find the cost of the bottle kit at JDS airman. The bottle kit gives more more air than the double tube but it also has power limitation. you can get a lot more power with the double tube.
The retractable bolt work by pull it backwards, in a J shape. This with not work on a regular disco breech. What seals the probe is an oring in the breech.
I bought my stock from norm and I believe he also sell left handed stocks
What did you do for the adapter? All he shows is the 90 deg adapter and hose…
Just the probe retracts on that bolt? I just don't see an o ring groove or anything in the pic… Looks like a regular bolt that didn't get the probe shaped on it yet. I hafta be missing something.
-
The bolt seals with a O-ring inside the breech, so not visible from the outside.
-
MR.B
you need to get a little patience and go through websites. lol
Adapter http://jdsairman.com/newproducts.html (http://jdsairman.com/newproducts.html)
Stock http://discosrus.net/discovery/ (http://discosrus.net/discovery/)
The bolt: you push the hole bolt back back. just enough to clear the barrel port. The bolt follow a J grant instead of a L track like most bolts. There is not need of any oring groube. I don't know how else to explain it.
-
Norm is usually so busy I'm surprised he even had the time to list those stocks on his website. hahaha
Everyone knows he's a good guy so they always send him plenty of work to keep him doing something. He recently took a vacation over the holidays. A much deserved one and I hope he really enjoyed himself. He's as good as they come, Lloyd too which why I have them listed in my sig to help out the new guys who come along here.
-
Im not saying he's not, but i still don't see anywhere that he sells any left handed stocks? Are you saying he just doesn't have them listed, and i should email or call?
So the adapter at the bottom of the page will fit the disco tube? I guess i just looked at what he had in his section labeled discoveries. I did find the regulated bottles i guess, and am definitely thinking thats the way to go. Your shot strings are hard for me to imagine. I don't know, but i don't think there are many projectile weapons in the world that produce that kind of consistency. Also, i would be able to mount that on my stock gun without the bnm breech right? I understand I'm gonna hafta modify my tube, and possibly stock, but it clears the factory barrel?
Ok, i see that the regulator is adjustable, but i don't see that he offers the 22ci tank without a regulator… If the adapter is regulated, i don't need a regulated tank do i?
Sorry guys, I'm finding out theres a lot of stuff to learn about this air gunning thing. Ik I'm hijacking your thread, but that gun blows my mind.
-
just email norm. he can help you out
Yes, you can use the bottle adaptor with the crosman breech
You need the regulator to attach the bottle to he adaptor. If you don't what to go that route you can have someone make you an adaptor to forgo the regulator.
-
Okay, thanks.
How does the regulator attach to the adapter? Curious if its something i can make myself.
-
It screws.
-
You don't happen to know what kind of thread? Npt, bsp, orb… Im no master machinist, but i have a lathe and mill, and if i spend enough time on it, i can usualy make what i want, but sometimes its better to just buy it.
-
If you going to make it yourself, remember you are working with pressures that are potentially lethal if something goes wrong.
So material selection, bolt quality, bolt placement, threading, and everything else needs to be of the proper quality to handle the mechanical stresses involved.
T
-
Mr. I don't want to sound rude but can you start as separate thread for you questions. It is getting away from the topic. Or fill free to PM and I'll be happy to answer questions
-
10-4.
-
I hate double posting so here a link to the update: http://www.gatewaytoairguns.org/GTA/index.php?topic=55801.msg597514#msg597514 (http://www.gatewaytoairguns.org/GTA/index.php?topic=55801.msg597514#msg597514)
-
I'm still working on the barrel with the weights and it is getting close to where I wanted to be.
In the meantime, I started another project...Actually is is done.
I copied the baffle system on the syn mrod. I made a 3D model and sent to get printed. It uses 7 baffles and spring.
(http://farm8.staticflickr.com/7432/12801084873_a175fd6c36_c.jpg)
link to the model http://shpws.me/qT5H (http://shpws.me/qT5H)
Gun is quieter. I have not test accuracy with them. The only problem I had is that I used a spring to keep them in place but the spring was vibrating (ping) when I fired. I wrapped it with electrical tape and that did the trick.
-
Daniel,
How sturdy are those baffles? What kind of plastic are they made out of?
Thanks,
Lloyd
-
The are very study. I'm not sure what kind of plastic. I sanded them a little and the plastic was tough. I also cut one shooter and it was hard to saw. which is a good sign. At first I thought I went too thin (1mm) thickness. But after installing them I have not regrets. The gun is very quiet.
here is a recording. I spoke to give an idea of the sound level. I was standing 3 feet away when I spoke and I shot 3 inches from the phone.
https://www.dropbox.com/s/y586x2p5voruzt7/Disco.m4a (https://www.dropbox.com/s/y586x2p5voruzt7/Disco.m4a)
If I was going to do them again I might go .5mm thicker. but no need. One thin is that the surface is not completely smooth, kind of speckled. That is why I sanded the pellet hole.
I even though I could design a full LDC and printed it as one piece
-
Group with the new baffles. I have to say when I first started shooting I was worried. They were not grouping very well. But it took about 10-15 shots for them to start grouping well. I was worried for a moment.
This is 5 shots from 40 with one flier.
(http://farm4.staticflickr.com/3689/12837128885_ff7c30dd44_n.jpg)
-
Daniel,
Thanks for the additional info about the printed parts, and the sound recording. It sounds very quiet.
The printing really does open up some possibilities for lots of different applications. Thanks for sharing all that information.
And nice grouping at 40 yds, too!
Lloyd
-
Hey man i feel like in one of your threads you were talking about how you had two disco pressure tubes. Just wondering how you got the second. I saw they sell them in europe from one site, and i'm sure crosman would sell you one if you called but i can't find anyone else that sells them or a ballpark price.
So if you know the price and where i'd appreciate the info if not i'll just call crosman tomorrow.
-
the double tube that you are talking about is made by Lloyd. He posted right before you did. here is he link to his website www.airgunlab.com (http://www.airgunlab.com)
-
I figure give an update.
I have been trying to get the TJ barrel to work and tried a few things to make it work. Harmonics seam to have an effect on the barrel. The first thing I tried was barrel weights. They helped but they not enough for my liking. the next thing I tried. was putting a Carbon fiver sleeve on the barrel. This did the trick. After about 10 shots I knew it was done. It is shooting great.
here is the sleeve:
(http://farm8.staticflickr.com/7122/13276405764_0a72f9558e_z_d.jpg)
New CF shroud:
(http://farm8.staticflickr.com/7430/12683941803_b4ac4b8c08_z_d.jpg)
Now some groups - 40 yards - 15 consecutive shots. groups of 5
(http://farm3.staticflickr.com/2812/13389672945_0138ff7a3f_z_d.jpg)
A few other mods:
added two breech screw to lock down the breech. Similar to the screws on the mrod. these are 4-40 screws. Now the breech has 4 attachment points.
(http://farm8.staticflickr.com/7256/13255065194_3d7a3e6427_z_d.jpg)
(http://farm8.staticflickr.com/7124/13253370234_e23644f91a_z_d.jpg)
The last mod is the adjustable butt place:
(http://farm8.staticflickr.com/7069/13277525653_82ac746b55_z_d.jpg)
I know I have said this many times, But I think I'm finally done with this gun. I ran out of mods.
-
yeah i've seen loyd's work but the second tube wouldn't have inlets for the trigger and cocking linkage for the spring hammer would it? i've been looking around at parts all day. It seems most people start with a gun and then change it to something completely their own. Bnm breech, marauder trigger, custom valve, loather walther barrel. At what point would it be better to get the air tube and valve assembly from crosman or ^&$@_=s, jds block and hpa regulated tank, marauder trigger, breech and then put everything together yourself? i'm trying to get a best bang for buck pcp and building one myself would be the way to go. I can do most metal work that uses hand tools and have more experience woodworking, so i'm hoping to be able to source the parts and make em all work together.
-
I figure give an update.
I have been trying to get the TJ barrel to work and tried a few things to make it work. Harmonics seam to have an effect on the barrel. The first thing I tried was barrel weights. They helped but they not enough for my liking. the next thing I tried. was putting a Carbon fiver sleeve on the barrel. This did the trick. After about 10 shots I knew it was done. It is shooting great.
here is the sleeve:
(http://farm8.staticflickr.com/7122/13276405764_0a72f9558e_z_d.jpg)
New CF shroud:
(http://farm8.staticflickr.com/7430/12683941803_b4ac4b8c08_z_d.jpg)
Now some groups - 40 yards - 15 consecutive shots. groups of 5
(http://farm3.staticflickr.com/2812/13389672945_0138ff7a3f_z_d.jpg)
A few other mods:
added two breech screw to lock down the breech. Similar to the screws on the mrod. these are 4-40 screws. Now the breech has 4 attachment points.
(http://farm8.staticflickr.com/7256/13255065194_3d7a3e6427_z_d.jpg)
(http://farm8.staticflickr.com/7124/13253370234_e23644f91a_z_d.jpg)
The last mod is the adjustable butt place:
(http://farm8.staticflickr.com/7069/13277525653_82ac746b55_z_d.jpg)
I know I have said this many times, But I think I'm finally done with this gun. I ran out of mods.
LOL---you're right, you did say that many times already...so sure you are...lol.
Nice work.
-
The disco will get expensive once you start modding. Trust me on that one. If you want a great shooting that is not that expensive maybe get a BSA. I love building my disco but not everyone wants to pore that much money into it. I could of bought a $1000++ gun by now. No regrets.
-
LOL---you're right, you did say that many times already...so sure you are...lol.
lol. I truly ran out of mods. No I have to give out my next build.
-
Haha it never ends! when you run out of mods there is the satisfaction of looking at the work you did, and that itch that it could somehow be better. and then you'll find something. Its hard to pull the plug and call it a job well done sometimes. But in your case that gun looks amazing. aesthetically it's one of the more beautiful pcp's i've seen. I'm not partial to carbon fiber but that really looks awesome on the shroud. I'm still new to modding air rifles and only got one cheapo pump and a springer under my belt but i can't wait to turn a pcp into something like what you've built. looks fantastic i can't imagine how much of a joy it is to shoot.
-
JMC,
If you decide to build a disco feel free to ask any questions. PM and I'll send you my email. I have done every imaginable mod to my disco and I'll be happy to help you out. The disco was my first PCP and I started Modding with it.
Daniel
-
i know it'll probably be over my price range for a little while but it's nice to have a game plan. I'd also rather build a nice shooter than buy a great shooter.
Take golf. I show up with a forty dollar driver i pieced together and compete against people using the latest self adjusting top of the line four figure clubs. But if i can do my part and beat them its just so much sweeter :)
And thanks Daniel, you've put pleanty of info up already i think i have four feeds up on my laptop right now and two of em are yours haha. If i go with this project it'll be this summer, if i get an internship at salisbury university. I'm up for funding to build a plasma speaker but if i can maybe sneak in an air rifle part or two and start saving i'm sure i can fit it into the budget. Plus they got a small metal shop I can use
-
Beautiful Discomarauderstein !
-
Group with the new baffles. I have to say when I first started shooting I was worried. They were not grouping very well. But it took about 10-15 shots for them to start grouping well. I was worried for a moment.
This is 5 shots from 40 with one flier.
(http://farm4.staticflickr.com/3689/12837128885_ff7c30dd44_n.jpg)
Im still looking for the flyer ;)
-
Daniel,
just to be completely upfront, I am blameing you.
so when my wife calls just say yes it was all your fault....
"dang" fine disco
-
That is a sweet disco you got. Thankyou for a very informative thread.
I recently just purchased a used one off of this site. I'll be pm'ing you soon for some advice if you don't mind.
Aloha
-
That is a sweet disco you got. Thankyou for a very informative thread.
I recently just purchased a used one off of this site. I'll be pm'ing you soon for some advice if you don't mind.
Aloha
Thank you. Feel free to ask any questions.
-
Hey Daniel, Got the first coat of Birchwood Casey on the stock, still working out the leak, its the o rings.
-
Group with the new baffles. I have to say when I first started shooting I was worried. They were not grouping very well. But it took about 10-15 shots for them to start grouping well. I was worried for a moment.
This is 5 shots from 40 with one flier.
(http://farm4.staticflickr.com/3689/12837128885_ff7c30dd44_n.jpg)
Man I wish I could get groups like that with my disco (also bnm breech/shroud) even at 25 yds! Was shooting JSBs great but now those have gone off too. Anyway...really nice mods on a great looking gun!
-
Dakato, Can't wait to see it. Post picture when you get a chance.
Clgraham82, Thank you. My disco is for the post part all custom including the barrel. Lots of work to get it there
-
What is still stock on your disco?
-
In all reality. ˝ of of the air tube. lol
-
You mean stock as in touched or still Disco parts.
Cause if you mean parts, the valve is probably still a disco piece. Dont know about the hammer.
-
everything has been modified. The only two part left is the ˝ of the tube and the valve.
-
You mean stock as in touched or still Disco parts.
Cause if you mean parts, the valve is probably still a disco piece. Dont know about the hammer.
Both, so 1/2 of the tube is stock,but then what is still disco but modded?
-
Well got it all tuned in and ready to go. Hunting tonight! here are my first 50 yards shots. this thing works so well I just love it and a still have a few upgrades left.
Thanks D for your help and input! Oh could I get the info on the carbon fiber tubes?
Marty happy shooting people!
5 Shots @ 50 not bad with a 2 to 3 mph wind from left to right.
(http://lee2763.smugmug.com/MP-Air-Arms/Gamo-Bone-Collecter-Bull/i-jh38qBQ/0/L/.22%20PCP%2050%20yrds%20A-L.jpg)
(http://lee2763.smugmug.com/MP-Air-Arms/Gamo-Bone-Collecter-Bull/i-TBfshm7/0/L/.22%20PCP%2050%20yrds%20B-L.jpg)
(http://lee2763.smugmug.com/MP-Air-Arms/Gamo-Bone-Collecter-Bull/i-VLpCxBM/0/L/.22%20PCP%2050%20yrds%20C-L.jpg)
-
looking great!!! Congrats.
here is where I get my tubes. http://www.clearwatercomposites.com/stock-carbon-fiber-tubes?&__hssc=&__hstc&hsCtaTracking=432003ba-e99a-4010-8f39-35366efc5c91%7Cf568be95-85af-489d-8771-d33261a50c2b (http://www.clearwatercomposites.com/stock-carbon-fiber-tubes?&__hssc=&__hstc&hsCtaTracking=432003ba-e99a-4010-8f39-35366efc5c91%7Cf568be95-85af-489d-8771-d33261a50c2b)
keep up posted on your build
-
Daniel I got the tube in Friday - working with it today a little under sized on the ID but I will work with it.
Thanks again buddy!
-
I had to bore out both ends to make it work.
-
I had to bore out both ends to make it work.
Yep I picked up a Brake cylinder hone form the auto parts store Saturday, looks like its working well so far. I am going to make the tube shorter than the BNM tube and only run with 5 baffles. If I go with your baffles would it be 5 as well, same length as the BNM ones?
-
What did you use for your muzzle end shroud cap? Is it threaded?
-
I used the cap from the bmn breech. It is not threaded. Pressure fit and it had two pins
-
That's a beautiful Disco 8)
-
WOW Daniel!!!! Almost too beautiful to shoot! Should be mounted on a wall somewhere! I love those Boyd's laminate stocks. Do you mind sharing how much you have into the gun? Once again, congrats on a thing of beauty brother.
-
Thank you. I have about $1100 in it. Everything in the gun is custom. The only part that is still a disco is ˝ of the airtube and the modified valve.