BIG NEW VALVE FOR M-ROD!

Forums PCP Airguns BIG NEW VALVE FOR M-ROD!

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    lorraine
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    Don Cothran Has just released a monster of a valve for the M-ROD and it makes crazy fpe! , He has some pics of it on his facebook page and he is now selling them at $150.00 each , I want one!

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    ajshoots
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    I know he has been developing the valve for a long time. Have you seen any numbers yet? The exhaust port looks huge!! Doesn’t look to be a simple drop in as the airtube, breech, and barrel would need opened up to utilize that huge exhaust port.

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    guod123
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    He got 300 fpe out of a Disco with a longer airtube, and a 3300 lb fill. This could be interesting.

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    30cal
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    300 fpe? Shooting what kind of projectile? I just ran a calculation. Using a 32.4 gr Eunjin shooting at 1500 fps would only give you 162 fpe. That’s the heaviest pellet I know of. You would need an oval transfer port just so the pellet didn’t fall into it from being so large, and a longer probe.  What was it converted to 357 cal for one shot?

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    ajshoots
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    Don builds big bores for hunting from the discovery platform. 300fpe was probably .357, 45, etc. I have spoke with Don a number of times and he is a heck of a gentleman and knows how to make power!! I am sure the new marauder valve is geared towards custom big bore marauder builds and high power bullet shooting .25’s. I have a 22″ TJ .250 barrel and a .25 marauder I rarely shoot anymore. Might give this valve a try?

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    spysir
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    Don seems to give folks the maximum rating, that being with whatever get the max.  His shotgun ( discovery based) gets abouve 300fpe – I believe- and naturally the rating mentioned for the marauder is not for a .177.  His valve will make those interested in making a .30 marauder , even a .45 or smooth bore and if one could live with a muzzle loader it could be a very easy low cost build. And his discovery valve is unlike pretty much any other valve I have ever seen. And they are very adjustable.
     SO glad I already have all the airguns a person could ever need. 
    Don does do excellent work, I’ve seen a lot of his work and spoken with a lot of other customers of his, never a complaint.
    John

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    30cal
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    Oh ok. That makes sense now. Thanks AJ!

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    guod123
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    Hi 30 cal as described to me a.357 with a 30″ barrel shooting a 150 grain, two full power shots with a weaker third. The valve was able to be detuned to something like 1400-1500 fps with a .22 pellet. He has created some great aftermarket stainless Crosman parts, not everything is power crazy. He’s a very talented machinist

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