New Old Project - Hayabusa PCP - Mark III Revisited
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New Old Project - Hayabusa PCP - Mark III Revisited
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Topic: New Old Project - Hayabusa PCP - Mark III Revisited (Read 85992 times))
rsterne
Member 2000+fps Club
Bob and Lloyd
GTA Senior Contributor
Posts: 26957
GTA Forums Person of the Year 2017
Real Name: Bob
Re: New Old Project - Hayabusa PCP - Mark III Version
«
Reply #200 on:
February 09, 2014, 10:07:43 PM »
Bolt action single shot.... Separate cocking lever that pulls back the hammer directly, you can see it in the photo of the parts....
Bob
Logged
Coalmont, BC, Canada
🇺🇦
Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since! 🇺🇦
Airsenal:
1750 CO2 Carbine, .177 Uber-Pumper, .22 Uber-Carbine, .25 Discovery, 2260 PCP 8-shot Carbine, 2260 HPA (37 FPE), 2560 HPA (52 FPE), XS-60c HPA in .30 cal (90 FPE), .22 cal QB79 HPA, Disco Doubles in .22, .25 & .30 cal, "Hayabusa" Custom PCP Project (Mk.I is .22 & .25 cal regulated; Mk.II is .224, .257, 7mm, .308 & .357; Mk.III is .410 shotgun and .458 cal), .257 "Monocoque" Benchrest PCP, .172/6mm Regulated PCP and .224/.257 Unregulated, Three regulated BRods in .25 cal (70 FPE), .30 cal (100 FPE) & .35 cal (145 FPE), .257 Condor (180 FPE).
rsterne
Member 2000+fps Club
Bob and Lloyd
GTA Senior Contributor
Posts: 26957
GTA Forums Person of the Year 2017
Real Name: Bob
Re: New Old Project - Hayabusa PCP - Mark III Version
«
Reply #201 on:
February 10, 2014, 12:30:50 PM »
I got the bottom end assembled and pressure tested overnight....
I filled it to 4000 psi, which is about 10% more than I will ever be using, and no sign of the tube yielding around the heads of the mounting screws for the valve and tank block.... which should be the first place to show any yield problems.... I left it overnight and it lost about 300 psi, there is a very tiny leak in the valve O-ring.... I used a 70D for the first test, replacing it with a 90D will cure that problem.... I was VERY pleased with the PEEK valve, it didn't leak even at only 500 psi....
Bob
Logged
Coalmont, BC, Canada
🇺🇦
Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since! 🇺🇦
Airsenal:
1750 CO2 Carbine, .177 Uber-Pumper, .22 Uber-Carbine, .25 Discovery, 2260 PCP 8-shot Carbine, 2260 HPA (37 FPE), 2560 HPA (52 FPE), XS-60c HPA in .30 cal (90 FPE), .22 cal QB79 HPA, Disco Doubles in .22, .25 & .30 cal, "Hayabusa" Custom PCP Project (Mk.I is .22 & .25 cal regulated; Mk.II is .224, .257, 7mm, .308 & .357; Mk.III is .410 shotgun and .458 cal), .257 "Monocoque" Benchrest PCP, .172/6mm Regulated PCP and .224/.257 Unregulated, Three regulated BRods in .25 cal (70 FPE), .30 cal (100 FPE) & .35 cal (145 FPE), .257 Condor (180 FPE).
airpuffhunter
Marksman
Posts: 350
Re: New Old Project - Hayabusa PCP - Mark III Version
«
Reply #202 on:
February 11, 2014, 07:41:40 PM »
Hello Bob, here is an interesting reading on the 410 shot gun
http://www.hoeningbigboresouth.com/index.html
I hope you like it
Logged
rsterne
Member 2000+fps Club
Bob and Lloyd
GTA Senior Contributor
Posts: 26957
GTA Forums Person of the Year 2017
Real Name: Bob
Re: New Old Project - Hayabusa PCP - Mark III Version
«
Reply #203 on:
February 12, 2014, 12:08:55 AM »
Interesting, yes, but has nothing to do with airguns.... I somehow doubt I will be approaching 1200 FPE.... in fact more like a third of that....
Bob
Logged
Coalmont, BC, Canada
🇺🇦
Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since! 🇺🇦
Airsenal:
1750 CO2 Carbine, .177 Uber-Pumper, .22 Uber-Carbine, .25 Discovery, 2260 PCP 8-shot Carbine, 2260 HPA (37 FPE), 2560 HPA (52 FPE), XS-60c HPA in .30 cal (90 FPE), .22 cal QB79 HPA, Disco Doubles in .22, .25 & .30 cal, "Hayabusa" Custom PCP Project (Mk.I is .22 & .25 cal regulated; Mk.II is .224, .257, 7mm, .308 & .357; Mk.III is .410 shotgun and .458 cal), .257 "Monocoque" Benchrest PCP, .172/6mm Regulated PCP and .224/.257 Unregulated, Three regulated BRods in .25 cal (70 FPE), .30 cal (100 FPE) & .35 cal (145 FPE), .257 Condor (180 FPE).
lloyd-ss
Bob and Lloyd
GTA Senior Contributor
Posts: 3567
Real Name: Lloyd
Re: New Old Project - Hayabusa PCP - Mark III Version
«
Reply #204 on:
February 13, 2014, 12:42:44 AM »
Bob,
This truly is your test mule. The fun never ends !
Swap parts and make new parts and it morphs into something else.
A good shotgun is sorely missing from the airgun market. Good luck on this.
Lloyd
Logged
Central Virginia
An engineer by nature. The affliction is knowing that everything can be made better. It is easy to make one that works, but it is difficult to make on that works WELL.
My YouTube channel is Airgun Lab
rsterne
Member 2000+fps Club
Bob and Lloyd
GTA Senior Contributor
Posts: 26957
GTA Forums Person of the Year 2017
Real Name: Bob
Re: New Old Project - Hayabusa PCP - Mark III Version
«
Reply #205 on:
March 13, 2014, 06:57:05 PM »
I got back to working on the Hayabusa the last couple of days and got the breeches roughed out.... I decided to make two, one for the .410 shotgun and one for the .458 rifle, as there were too many compromises to make to fit the rifle barrel in the shotgun breech.... Sean supplied me with a bar of aluminum long enough for two, so I cut a couple of 9" pieces and set up the mill to reduce then to the proper dimensions and machine the groove along the bottom for the main tube.... Here is a photo of one of them at this point....
I had a LOT of material to remove, and it took me the better part of two days.... I had to remove 1/8" from the width and 3/8" from the height, and then when I machined the groove I didn't have a 1.125" ball mill, so I used a 1" and then took extra passes off center to get a near perfect fit with three points of contact, the center and both edges.... One of the reasons it took so long was that my milling attachment on the lathe only has 6" of crossfeed and the breech is 9" long, so I had to do the machining in two setups for each dimension.... I then laid out the location of the bore and drilled it from both ends and the 3/8" pilot hole met perfectly in the middle.... The other breech is finished to the same stage except I haven't drilled the through hole yet....
I have machined the chambers in both the shotgun and rifle barrels and sleeved them up to 3/4" OD (they were only 5/8") to make them large enough to accept a 1/2" OD x 3/8" ID transfer port.... More to come soon....
Bob
Logged
Coalmont, BC, Canada
🇺🇦
Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since! 🇺🇦
Airsenal:
1750 CO2 Carbine, .177 Uber-Pumper, .22 Uber-Carbine, .25 Discovery, 2260 PCP 8-shot Carbine, 2260 HPA (37 FPE), 2560 HPA (52 FPE), XS-60c HPA in .30 cal (90 FPE), .22 cal QB79 HPA, Disco Doubles in .22, .25 & .30 cal, "Hayabusa" Custom PCP Project (Mk.I is .22 & .25 cal regulated; Mk.II is .224, .257, 7mm, .308 & .357; Mk.III is .410 shotgun and .458 cal), .257 "Monocoque" Benchrest PCP, .172/6mm Regulated PCP and .224/.257 Unregulated, Three regulated BRods in .25 cal (70 FPE), .30 cal (100 FPE) & .35 cal (145 FPE), .257 Condor (180 FPE).
rsterne
Member 2000+fps Club
Bob and Lloyd
GTA Senior Contributor
Posts: 26957
GTA Forums Person of the Year 2017
Real Name: Bob
Re: New Old Project - Hayabusa PCP - Mark III Version
«
Reply #206 on:
March 23, 2014, 01:11:07 PM »
Not quite finished the breeches, but I've made quite a bit of progress in the last 10 days....
The longer breech in the background is for the .410 shotgun, capable of loading a 2" long shell.... It is likely that I can use the shell at a length of 1.75" but I left enough length for an extra base wad behind the shot cup in case the seal isn't good enough with just the plastic cup at airgun pressures.... The breech in the foreground is for the .457 rifle version.... I could have shortened the loading port and the breech another half inch, but there was no reason to.... The boss on the front is for a 1" OD shroud to put the barrel in tension to stiffen it.... The long slot in the bottom of the breech, in front of the bolt slot, is for the cocking handle.... Yes, it really does have 2" of hammer travel.... for the 8 oz. hammer....
The next job is to make the bolts and finish machining the barrel ports.... then machine in the scope mounts on the top of the breeches.... The rifle is getting a dovetail as usual, but the shotgun is going to have a Weaver mount for a wide-screen red-dot.... I haven't decided yet if it will be in front of the loading port or behind it.... I may put a Weaver/Picatinny rail both places if I don't get lazy / in a hurry....
Bob
Logged
Coalmont, BC, Canada
🇺🇦
Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since! 🇺🇦
Airsenal:
1750 CO2 Carbine, .177 Uber-Pumper, .22 Uber-Carbine, .25 Discovery, 2260 PCP 8-shot Carbine, 2260 HPA (37 FPE), 2560 HPA (52 FPE), XS-60c HPA in .30 cal (90 FPE), .22 cal QB79 HPA, Disco Doubles in .22, .25 & .30 cal, "Hayabusa" Custom PCP Project (Mk.I is .22 & .25 cal regulated; Mk.II is .224, .257, 7mm, .308 & .357; Mk.III is .410 shotgun and .458 cal), .257 "Monocoque" Benchrest PCP, .172/6mm Regulated PCP and .224/.257 Unregulated, Three regulated BRods in .25 cal (70 FPE), .30 cal (100 FPE) & .35 cal (145 FPE), .257 Condor (180 FPE).
QVTom
GTA Senior Contributor
Posts: 3695
Real Name: Tom
Re: New Old Project - Hayabusa PCP - Mark III Version
«
Reply #207 on:
March 23, 2014, 01:40:27 PM »
I understand the temptation to use a bolt on picatinny, I have seen aluminum versions as cheap as $10. It's hard to justify all the necessary setup and machining for 10 bucks! Looking good and amazing progress as always. I curious, why no j-bolts?
Tom
Logged
Acton, CA
www.americanairarms.com
- Made in the USA
Get on the GTA Members Map!
https://www.zeemaps.com/map?group=962067
rsterne
Member 2000+fps Club
Bob and Lloyd
GTA Senior Contributor
Posts: 26957
GTA Forums Person of the Year 2017
Real Name: Bob
Re: New Old Project - Hayabusa PCP - Mark III Version
«
Reply #208 on:
March 23, 2014, 03:25:39 PM »
Actually, I will machine the Weaver/Picatinny mount into the top of the shotgun breech....
I have to put the breech O-rings on the bolts because of wall thickness issues on the barrel.... To use a "J" bolt you have to have a smooth bolt.... In addition, again because of wall thickness issues, I can only go to a 3/8" ID x 1/2" OD transfer port.... which is as large a hole as I can squeeze into the base of the .410 shell anyway.... The bolts will use a scooped out flow-through design with a 3/8" wide channel to move the air from the barrel port to the hole in the shell, and the rifle, which uses the same valve and tube will share that system.... The compromises are worth it, however, as I can still achieve a barrel port that is 82% of the boresize on the .457 (91% on the .410), which at 3600 psi will move a LOT of air....
Bob
Logged
Coalmont, BC, Canada
🇺🇦
Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since! 🇺🇦
Airsenal:
1750 CO2 Carbine, .177 Uber-Pumper, .22 Uber-Carbine, .25 Discovery, 2260 PCP 8-shot Carbine, 2260 HPA (37 FPE), 2560 HPA (52 FPE), XS-60c HPA in .30 cal (90 FPE), .22 cal QB79 HPA, Disco Doubles in .22, .25 & .30 cal, "Hayabusa" Custom PCP Project (Mk.I is .22 & .25 cal regulated; Mk.II is .224, .257, 7mm, .308 & .357; Mk.III is .410 shotgun and .458 cal), .257 "Monocoque" Benchrest PCP, .172/6mm Regulated PCP and .224/.257 Unregulated, Three regulated BRods in .25 cal (70 FPE), .30 cal (100 FPE) & .35 cal (145 FPE), .257 Condor (180 FPE).
Bill L.
Plinker
Posts: 132
Confused
Re: New Old Project - Hayabusa PCP - Mark III Version
«
Reply #209 on:
April 07, 2014, 06:41:06 PM »
Have you had time for anymore work on this Bob?
Logged
California
rsterne
Member 2000+fps Club
Bob and Lloyd
GTA Senior Contributor
Posts: 26957
GTA Forums Person of the Year 2017
Real Name: Bob
Re: New Old Project - Hayabusa PCP - Mark III Version
«
Reply #210 on:
April 08, 2014, 01:08:30 AM »
I hope to get back to it in a couple more weeks.... no time lately....
Bob
Logged
Coalmont, BC, Canada
🇺🇦
Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since! 🇺🇦
Airsenal:
1750 CO2 Carbine, .177 Uber-Pumper, .22 Uber-Carbine, .25 Discovery, 2260 PCP 8-shot Carbine, 2260 HPA (37 FPE), 2560 HPA (52 FPE), XS-60c HPA in .30 cal (90 FPE), .22 cal QB79 HPA, Disco Doubles in .22, .25 & .30 cal, "Hayabusa" Custom PCP Project (Mk.I is .22 & .25 cal regulated; Mk.II is .224, .257, 7mm, .308 & .357; Mk.III is .410 shotgun and .458 cal), .257 "Monocoque" Benchrest PCP, .172/6mm Regulated PCP and .224/.257 Unregulated, Three regulated BRods in .25 cal (70 FPE), .30 cal (100 FPE) & .35 cal (145 FPE), .257 Condor (180 FPE).
NCmountainShooter
Plinker
Posts: 159
yes
Real Name: Chris
Re: New Old Project - Hayabusa PCP - Mark III Version
«
Reply #211 on:
June 14, 2014, 09:59:01 PM »
It's been a couple months since the last post. Is this project still in the works? I can't wait to see the finished product.
Logged
Boone, NC
Hatsan AT-44 Long, .22, Hawke 4-12x50
TX200 .22 MkIII with Hawke 4-12x40
2240, 24" barrel, 6.5" TKO, Steel Breech, Hipac, 29FPE
rsterne
Member 2000+fps Club
Bob and Lloyd
GTA Senior Contributor
Posts: 26957
GTA Forums Person of the Year 2017
Real Name: Bob
Re: New Old Project - Hayabusa PCP - Mark III Version
«
Reply #212 on:
June 15, 2014, 12:46:58 AM »
Summer is here and the Motel is busy.... I may not get back to it until the winter....
Bob
Logged
Coalmont, BC, Canada
🇺🇦
Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since! 🇺🇦
Airsenal:
1750 CO2 Carbine, .177 Uber-Pumper, .22 Uber-Carbine, .25 Discovery, 2260 PCP 8-shot Carbine, 2260 HPA (37 FPE), 2560 HPA (52 FPE), XS-60c HPA in .30 cal (90 FPE), .22 cal QB79 HPA, Disco Doubles in .22, .25 & .30 cal, "Hayabusa" Custom PCP Project (Mk.I is .22 & .25 cal regulated; Mk.II is .224, .257, 7mm, .308 & .357; Mk.III is .410 shotgun and .458 cal), .257 "Monocoque" Benchrest PCP, .172/6mm Regulated PCP and .224/.257 Unregulated, Three regulated BRods in .25 cal (70 FPE), .30 cal (100 FPE) & .35 cal (145 FPE), .257 Condor (180 FPE).
rsterne
Member 2000+fps Club
Bob and Lloyd
GTA Senior Contributor
Posts: 26957
GTA Forums Person of the Year 2017
Real Name: Bob
Re: New Old Project - Hayabusa PCP - Mark III Version
«
Reply #213 on:
November 30, 2014, 03:25:51 PM »
I finally got back into the shop to finish off the breeches for the Hayabusa Mk.3.... Here they are with the barrels installed.... The .457 rifle barrel is 30" long, the .410 shotgun barrel is 25" including the poly-choke....
In this photo, you can see the basic differences.... The .457 rifle (top) has provision for a shroud, and a shorter loading port, and a dovetail for a scope.... The .410 shotgun (bottom) is longer overall, with a longer loading port to accommodate the shotshell, and a Picatiinny rail forward of the port for mounting a Holosight....
The third photo shows the bottom and side views, with the monster transfer port visible.... It is 1/2" OD with a 3/8" ID and the flow-though bolts have the same size passage....
The next steps are a cocking handle for the hammer (you can see the clearance slot in the breeches, below the loading port), make the transfer ports (from 1/2" Teflon rod), strip the valve out to chase a leak, and it will be ready to assemble and test.... My biggest concern at that point is assuring I have an adequate backstop....
Bob
Logged
Coalmont, BC, Canada
🇺🇦
Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since! 🇺🇦
Airsenal:
1750 CO2 Carbine, .177 Uber-Pumper, .22 Uber-Carbine, .25 Discovery, 2260 PCP 8-shot Carbine, 2260 HPA (37 FPE), 2560 HPA (52 FPE), XS-60c HPA in .30 cal (90 FPE), .22 cal QB79 HPA, Disco Doubles in .22, .25 & .30 cal, "Hayabusa" Custom PCP Project (Mk.I is .22 & .25 cal regulated; Mk.II is .224, .257, 7mm, .308 & .357; Mk.III is .410 shotgun and .458 cal), .257 "Monocoque" Benchrest PCP, .172/6mm Regulated PCP and .224/.257 Unregulated, Three regulated BRods in .25 cal (70 FPE), .30 cal (100 FPE) & .35 cal (145 FPE), .257 Condor (180 FPE).
Bill L.
Plinker
Posts: 132
Confused
Re: New Old Project - Hayabusa PCP - Mark III Version
«
Reply #214 on:
December 02, 2014, 12:45:22 PM »
Glad to see you back to work on this Bob.Are you still using a milling attachment on your lathe or did you get a milling machine?
Logged
California
rsterne
Member 2000+fps Club
Bob and Lloyd
GTA Senior Contributor
Posts: 26957
GTA Forums Person of the Year 2017
Real Name: Bob
Re: New Old Project - Hayabusa PCP - Mark III Version
«
Reply #215 on:
December 02, 2014, 01:11:59 PM »
Still using the old Atlas milling attachment.... This breech is so long I have to reposition, so careful adjustment in all 3 axis was critical....
Bob
Logged
Coalmont, BC, Canada
🇺🇦
Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since! 🇺🇦
Airsenal:
1750 CO2 Carbine, .177 Uber-Pumper, .22 Uber-Carbine, .25 Discovery, 2260 PCP 8-shot Carbine, 2260 HPA (37 FPE), 2560 HPA (52 FPE), XS-60c HPA in .30 cal (90 FPE), .22 cal QB79 HPA, Disco Doubles in .22, .25 & .30 cal, "Hayabusa" Custom PCP Project (Mk.I is .22 & .25 cal regulated; Mk.II is .224, .257, 7mm, .308 & .357; Mk.III is .410 shotgun and .458 cal), .257 "Monocoque" Benchrest PCP, .172/6mm Regulated PCP and .224/.257 Unregulated, Three regulated BRods in .25 cal (70 FPE), .30 cal (100 FPE) & .35 cal (145 FPE), .257 Condor (180 FPE).
rsterne
Member 2000+fps Club
Bob and Lloyd
GTA Senior Contributor
Posts: 26957
GTA Forums Person of the Year 2017
Real Name: Bob
Re: New Old Project - Hayabusa PCP - Mark III Version
«
Reply #216 on:
December 03, 2014, 09:57:12 PM »
Today I took the valve out, replaced the 70D O-ring that had a slow leak with a 90D, filled the gun from my new Great White, took out my hearing aids, put in my earplugs, and fired the first shot.... Yup, it's pretty loud!.... I had the hammer spring preload at maximum, and at 3600 psi it was just under 800 fps with three 000 Buck.... Not as strong as I was hoping for, but nearly 300 FPE, the most powerful shot I have ever had from an airgun.... I fired a few shots and examined the plastic shot cups I found down by the backstop, and they were all split or blown open through the middle of the base.... I wondered if possibly I was getting a lot of blowby, so I used a 1/4" thick fibre wad in the shell first and then the three Buckshot (no shot cup), and got more consistent and higher velocities.... The highest I saw was 817 fps, and that was 7 yards from the muzzle, so that corrects to 833 fps at the muzzle (313 FPE) at just under 3000 psi.... I got 7 shots from 3600 psi down to 2700 within 4% ES....
The disappointing part of the first tests was that I don't have enough hammer strike.... I got a very nice shot string, but I'm maxed out, and the peak is at just under 3000 psi.... This is despite having a 237 gr. hammer with 2" of travel and a spring that takes 36 lbs. to cock.... and a PEEK valve.... Before I make any changes I will try the .457 Rifle barrel with some 220 gr. bullets I have, and some roundball, just to get a baseline.... I have no idea how I could increase the hammer strike if I need to, to get more power....
Bob
Logged
Coalmont, BC, Canada
🇺🇦
Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since! 🇺🇦
Airsenal:
1750 CO2 Carbine, .177 Uber-Pumper, .22 Uber-Carbine, .25 Discovery, 2260 PCP 8-shot Carbine, 2260 HPA (37 FPE), 2560 HPA (52 FPE), XS-60c HPA in .30 cal (90 FPE), .22 cal QB79 HPA, Disco Doubles in .22, .25 & .30 cal, "Hayabusa" Custom PCP Project (Mk.I is .22 & .25 cal regulated; Mk.II is .224, .257, 7mm, .308 & .357; Mk.III is .410 shotgun and .458 cal), .257 "Monocoque" Benchrest PCP, .172/6mm Regulated PCP and .224/.257 Unregulated, Three regulated BRods in .25 cal (70 FPE), .30 cal (100 FPE) & .35 cal (145 FPE), .257 Condor (180 FPE).
QVTom
GTA Senior Contributor
Posts: 3695
Real Name: Tom
Re: New Old Project - Hayabusa PCP - Mark III Version
«
Reply #217 on:
December 03, 2014, 10:09:18 PM »
Nice progress Bob. Lloyd suggested a tungsten hammer as a method for more strike in the same space. I did a little research and it's stated to be very machinable.
Tom
Logged
Acton, CA
www.americanairarms.com
- Made in the USA
Get on the GTA Members Map!
https://www.zeemaps.com/map?group=962067
rsterne
Member 2000+fps Club
Bob and Lloyd
GTA Senior Contributor
Posts: 26957
GTA Forums Person of the Year 2017
Real Name: Bob
Re: New Old Project - Hayabusa PCP - Mark III Version
«
Reply #218 on:
December 03, 2014, 10:27:48 PM »
Oh, goody!.... I can increase my hammer to a whole pound from over 8 oz.... *LOL*....
I have one more thing to try on the .410 to see if I'm getting blowby.... I can make the shell casing 2" long instead of 1.75" (I left room in the breech and chamber for that) and put a 1/4" fibre base wad in first and then the shot cup on top of it.... Who knows, that might give me a boost in fps and FPE....
I guess I shouldn't complain, at 3000 psi I'm right where Lloyd's spreadsheet said I would be with 65% efficiency.... I wish I knew what it would do maxed out at 3600 though.... In theory a max. shot should be ~ 920 fps (382 FPE), and about 890 fps with the valve closing at 50% @ 3600 psi....
Bob
«
Last Edit: December 03, 2014, 11:22:45 PM by rsterne
»
Logged
Coalmont, BC, Canada
🇺🇦
Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since! 🇺🇦
Airsenal:
1750 CO2 Carbine, .177 Uber-Pumper, .22 Uber-Carbine, .25 Discovery, 2260 PCP 8-shot Carbine, 2260 HPA (37 FPE), 2560 HPA (52 FPE), XS-60c HPA in .30 cal (90 FPE), .22 cal QB79 HPA, Disco Doubles in .22, .25 & .30 cal, "Hayabusa" Custom PCP Project (Mk.I is .22 & .25 cal regulated; Mk.II is .224, .257, 7mm, .308 & .357; Mk.III is .410 shotgun and .458 cal), .257 "Monocoque" Benchrest PCP, .172/6mm Regulated PCP and .224/.257 Unregulated, Three regulated BRods in .25 cal (70 FPE), .30 cal (100 FPE) & .35 cal (145 FPE), .257 Condor (180 FPE).
hutnicks
Marksman
Posts: 447
yes
Real Name: Stuart
Re: New Old Project - Hayabusa PCP - Mark III Version
«
Reply #219 on:
December 03, 2014, 10:47:34 PM »
On the bright side I suspect you've eliminated bounce
Space permitting , solenoid or servo actuation may be the way to go.
Logged
Ontario
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New Old Project - Hayabusa PCP - Mark III Revisited