Author Topic: Cothran PowerHouse Valve and TP. (Read 17844 times))

Monkeydad1969 · « **on:** July 06, 2015, 01:25:57 AM »

Got a new TP in for my Cothran PowerHouse vavle. So here are pics of the Cothran valve compared to a stock Disco valve, and the TP (thanks to member miksatx for the TP):

rsterne · « **Reply #1 on:** July 06, 2015, 01:39:02 AM »

Nice.... How big is the exhaust port in the valve?....

Bob

dcorvino · « **Reply #2 on:** July 06, 2015, 01:41:00 AM »

Very nice Joe.
Look forward to reading about the gun your building with the valve.

Dave

Monkeydad1969 · « **Reply #3 on:** July 06, 2015, 02:13:48 AM »

The lip is 3/8" and the exhaust is 1/4" ID (I believe). I will have to measure it later when I take it apart.

YEMX · « **Reply #4 on:** July 06, 2015, 11:48:58 AM »

That TP looks massive!!!!

Monkeydad1969 · « **Reply #5 on:** July 06, 2015, 11:33:02 PM »

Right now I am getting 50fpe with a 13XX spring cut down about 3 coils less than a Disco spring. With no preload. On a 2400psi fill I have gotten 850fps/69fpe shooting a Eunjin 43.2 with a cut down heavy hammer spring. The valve is a beast.

miksatx · « **Reply #6 on:** July 07, 2015, 09:05:34 AM »

geeez I wish my .30 pellets would hurry and get here. Good work Joe that ought to knock the heck out those pdawgs.

Monkeydad1969 · « **Reply #7 on:** July 07, 2015, 10:21:15 PM »

I think, after talking with my bud Dave, I am going to order a .30 from TJ, then later a .357.

YEMX · « **Reply #8 on:** July 08, 2015, 12:05:03 AM »

Can't go wrong!! I still need to order my TJ .357 as well!

Monkeydad1969 · « **Reply #9 on:** July 08, 2015, 12:18:54 AM »

Quote from: YEMX on July 08, 2015, 12:05:03 AM

Can't go wrong!! I still need to order my TJ .357 as well!

Did you get pricing per inch? Wonder if it has changed.

YEMX · « **Reply #10 on:** July 08, 2015, 12:21:28 AM »

yep pricing per inch- I think it goes up a bit when you go over a certain length- maybe over 30"? I could be wrong about the length. I got a 24" .30 barrel for $118... $133 with shipping. He packages the barrels really really well!

Monkeydad1969 · « **Reply #11 on:** July 08, 2015, 12:57:20 AM »

Is that the .300 with 1 in 10 twist?

screwwork · « **Reply #12 on:** July 08, 2015, 01:10:30 AM »

Nice valve & TP Monkeydad!
Have you been over at the 54 airgun forum and seen this post about a 357 cal w/cothran valve used in a 2260 tube...gracious

http://www.network54.com/Forum/581291/message/1432337130/2260+pcp+.357+My+1st+big+bore+project%21%21%21

Monkeydad1969 · « **Reply #13 on:** July 08, 2015, 01:25:49 AM »

Quote from: screwwork on July 08, 2015, 01:10:30 AM

Nice valve & TP Monkeydad!
Have you been over at the 54 airgun forum and seen this post about a 357 cal w/cothran valve used in a 2260 tube...gracious

http://www.network54.com/Forum/581291/message/1432337130/2260+pcp+.357+My+1st+big+bore+project%21%21%21

Not yet, until now. That guy is on here already. I think he can get better fpe, though.

dcorvino · « **Reply #14 on:** July 08, 2015, 01:33:50 AM »

Look forward to seeing your results Sir.

Dave

YEMX · « **Reply #15 on:** July 08, 2015, 10:25:00 AM »

The one I ordered was the one Sean and Bob came up with: 1:26 twist, .590" O.D.

Monkeydad1969 · « **Reply #16 on:** July 08, 2015, 11:26:41 AM »

Tom are you going to prep the barrel or have someone else do that?

Joe

YEMX · « **Reply #17 on:** July 08, 2015, 12:11:50 PM »

Someone else- I don't have the skill nor the machines to do the work. I have the drive though! The .357 TJ will be going on a QB build.

D.C. needs to start making Prod PowerHouse valves too! Much more secure build in my mind... Then I'll do a Crosman .25 Katana, Ver. 2 build!!

I wonder how much Oommpf this valve will have with .25 cal 70 gr slugs... Hmmmmm

Monkeydad1969 · « **Reply #18 on:** July 08, 2015, 11:29:51 PM »

49 grain slugs are doing pretty good. Need to chrony. But in my little 12' fun range (pathetic, I know), I have some Bob's BT's 49gr and they are going 2.25" into 2 2x8's put together---thru the first and about halfway into the 2nd. I know the distance isn't impressive, but I have high hopes. RVA turned in 4 turns on 2200psi fill.

Voltar1 · « **Reply #19 on:** October 03, 2015, 09:46:01 PM »

Curious how that valve is supposed to open easier? IMO it will not. Lots of closing forces but I cannot for the life of me see how it would open any easier than any other popped valve.
Walter.....

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Cothran PowerHouse Valve and TP.

Author Topic: Cothran PowerHouse Valve and TP. (Read 17844 times))