Author Topic: .30 RS (Read 12021 times))

KnifeMaker · « **Reply #80 on:** December 12, 2018, 10:15:54 PM »

Now that's thinking out of the box Daniel!

Went to a dual spring system, your spring cut and a Maximus spring. Set to give just a touch of free flight.

Set her for low power, at 840's and got two mags of 9 each for 18 shots that give a very nice cluster hovering around 1 inch at 80 yards in this terrible wind today. Slower seems to fight the wind much better. Just as Bob predicted.

Used 1 inch target dots,and could keep them inside the dot. Woo-Hoo!!!

oneshot61 · « **Reply #81 on:** December 12, 2018, 10:28:55 PM »

18 shots in an inch at 80!!! That’s fantastic! Well done Michael. I’ve never used a dual spring setup.( by that I mean different windings, not shorty’s dual) What is the advantage of that?
I’ve got to add another magnet in the same place on the opposite side to make sure I’m not dragging the hammer down one side. Ill have a chance to shoot tomorrow afternoon for another 30 min and I’ll put the 18 lb spring I set back in at 1/8 free flight. And one mag at max to see what it will do. Ain’t these Evanix fun;)

KnifeMaker · « **Reply #82 on:** December 13, 2018, 03:53:25 AM »

Daniel here is what I did, borrowing form RKR and Hobbyman. Worked fantastic!

Well, until the valve stem chipped out again. Allowing the valve face to contact the metal cage around the poppet. GRRRR! Going to implement RKR's fix for that.

www.gatewaytoairguns.org/GTA/index.php?topic=151263.0

Hobbyman2007 · « **Reply #83 on:** December 13, 2018, 10:09:05 AM »

Good thinking with the magnet . Like Mike mentioned , a dual spring set up is the way to go . I picked up 4 shots in free flight and can still add preload for big power if need be . Got to love the Evanix action ,much easier to work on than most . No need for fancy valves to make power and still easy to cock .

Nomadic Pirate · « **Reply #84 on:** December 13, 2018, 11:39:39 AM »

Question,

What's the trick with dual spring ? can they be 2 springs of the same size ?

KnifeMaker · « **Reply #85 on:** December 13, 2018, 03:15:12 PM »

Many, they can be, but then again, as the coils are next to each other, coil bind is not very far away. Hard to get full power.

However, using a smaller inner spring, no danger of coil bind, and you can select any rate number you want.

I crudly turned down the spring guide in the front to hold the aftermarket maximus spring. Turned it down for about the first 3/8" length to hold it in place. The spring itself acts like a guide for the larger dia. stock type spring.

Mike

Nomadic Pirate · « **Reply #86 on:** December 13, 2018, 06:16:10 PM »

I see, so you need a spring that fits inside the stock spring then.

KnifeMaker · « **Reply #87 on:** December 13, 2018, 08:53:45 PM »

Yep, Manny, I think the stronger Maximus/Disco springs sold by Magnum AirPower, and Possibly Discos-R-Us should work very well.

Mike

Prouzy · « **Reply #88 on:** December 14, 2018, 01:06:12 PM »

Quote from: oneshot61 on December 12, 2018, 06:17:03 PM

Work is taking all my daylight hours lately, but I got about 30 minutes to run some testing with my new ss spring. My thoughts are that unless I’m shooting for one mag at high power with the 66 grain bbt it’s a bit to strong for a decent non peaky string. Even with nearly 1/4 inch free flight my spread is 27 with one shot in the middle causing all the problems. 908-937-899 FPS over 12 shots, jsb 50. It’s just pushing the hammer to fast. However.. I tried something quickly today and preliminary testing is promising. I inset a strong magnet into my stock, centered and near the back half of the hammer at rest. I think because of free flight it has a chance to slow the secondary hit to the hammer. I was able to get three more shots over a 900 FPS threshold. All testing was at 3050. Next testing will be with my 18 lb spring with the magnet installed. I’m looking for 14 shots over 920... hopefully..then take this to 3200 psi and test for a high power 7 shot mag.

Never heard of that, cool! Nice work, just keeps getting better!

oneshot61 · « **Reply #89 on:** December 15, 2018, 06:32:16 PM »

Quote from: Hobbyman2007 on December 13, 2018, 10:09:05 AM

Good thinking with the magnet . Like Mike mentioned , a dual spring set up is the way to go . I picked up 4 shots in free flight and can still add preload for big power if need be . Got to love the Evanix action ,much easier to work on than most . No need for fancy valves to make power and still easy to cock .

Thanks Denis, been thinking about the magnet deal a while. I’m really loving this Evanix..hard to beat these smooth sidelevers.

And thank you Chris. I have another tuning adaption to try as soon as I get it worked out

. I’ll be insetting the second magnet tonight and have all day to shoot tomorrow.

KnifeMaker · « **Reply #90 on:** December 20, 2018, 10:27:58 PM »

Daniel, any updates?

Mike

oneshot61 · « **Reply #91 on:** December 20, 2018, 10:59:15 PM »

Sadly, no. Solid work and raining like it’s trying to strangle frogs. I’m setting on go though. Looks like Saturday is sunny and I’m taking 1/2 day off. I have a new chrony in as I’ve shot my other one 3-4 times. It still works but after reading a post from bullfrog about his misreadings after dropping his, I began to question its validity. Tanks are filled, barrel will be cleaned and the hammer, tube rebuffed , spring polished and ready to go.
I’ve also been looking for someone to sell me some of the 62 grain bbt .300 if anyone has a lead on that please let me know.

oneshot61 · « **Reply #92 on:** December 23, 2018, 06:34:07 PM »

I filled the rainstorm to 3200, still have the ss spring in with only one magnet. No time to dremel out for the other one today. I should have went to the 3240 listed on Evanix site.(actually it’s 3335) At the end, I lost one shot. 50 jsb sized to .300.
918,920,924,924,925,932,925,920,924,926,922,920,916. 13 shots, 3200 psi to 2460. 740 psi, 56 psi per shot avg. 94.55 ft lb average. This setup loves the 3200 fill. One more tuning thing to try, then I’ll turn the probe and radius the valve.
Looks like efficiency at 1.58.

Nomadic Pirate · « **Reply #93 on:** December 23, 2018, 07:04:06 PM »

WOW !!!!! .....that is awesome, bunch of shots and real good power indeed.

Prouzy · « **Reply #94 on:** December 24, 2018, 09:15:23 AM »

Wow, thats awesome!

KnifeMaker · « **Reply #95 on:** December 28, 2018, 01:31:00 AM »

Really enjoying playing with the .257 TJ's barrel. Too fast of a twist really though.

Thought about contacting AirVenturi and getting the price of a .30 barrel and mag.

that, or fit allonger .257 barrel "IF" I can find a slower twist. Only other option is go wit a .22 barrel with a slower twist and size down. GRRRRR!!!

Daniel, I am loving the results with your spring and the added Magnum airpower maximus spring. Working fantastic!
Both cut to allow ust under 1/8" free flight.

Tried it today backed all the way out for pellets, (NOE 34.6 gr. ) and they shot well out of the 19" TJ barrel.

Would love to get a 24" .257 or .25 barrel for it.

Mike

oneshot61 · « **Reply #96 on:** December 28, 2018, 03:53:41 AM »

I have a 25” ( I believe) .257 tj 1-14 in my shop. It’s still in the rough (not crowned or ported). I’ll look tomorrow and measure the length. I’ll ship it to you, and one of my stainless heavy springs. Late merry Christmas 😉.

KnifeMaker · « **Reply #97 on:** December 29, 2018, 06:35:20 AM »

Daniel, the added length would allow me to shoot longer bullets in order to use the 1 in 14 twist!

Wow!!! Mega thanks Sir!

Just WOW!!!

Mike

KnifeMaker · « **Reply #98 on:** December 29, 2018, 06:36:52 AM »

My Wife and didn't get to exchange Christmas Gifts this year due to medical issues. She will be ultra stoked when I tell her!

Mike

KnifeMaker · « **Reply #99 on:** November 11, 2019, 07:49:17 PM »

Such a shame that this thread ended. There has been so much more done and learned.

Now thesting a .223 barrel, adn have a .172 to install next.

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.30 RS

Author Topic: .30 RS (Read 12021 times))

Nomadic Pirate

Nomadic Pirate

Nomadic Pirate