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Old 03-12-2008, 04:52 PM   #1 (permalink)
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Rainmaker firing Problem

well, i got a really neat, totally pneumatic (no electronics) rainmaker today, but the thing won't fire...

pneumatically, it cycles just fine, but it appears that the hammer sear isn't catching on the end of the ram.

any suggestions?
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Old 03-12-2008, 06:33 PM   #2 (permalink)
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Are you comfortable taking it apart? I've seen the hammer latch snap off on them. Also make sure the timing length is correct-try unscrewing the carrier a turn or 2 on the ram shaft. If it's too short, the hammer can't engage.
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Old 03-12-2008, 09:55 PM   #3 (permalink)
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One other thing I forgot to mention- if the hpr isn't adjusted high enough, the valve spring doesn't have enough authority on its own to hold the valve pin to allow it to get latched by the carrier. Kinda like how most Nelsons won't latch if they're not gassed up. Try turning up the hpr if you haven't already torn it apart.
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Old 03-12-2008, 10:42 PM   #4 (permalink)
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it's special... it needs an outside HPR... thinking of an old WGP ergo or BM reg...

and i did get it firing off of 12g's..

it appears that now i have adjusted it slightly too far and it has a slight leak from the valve (from the hammer-carrier pressing against the valve pin)

all that being said though, it's friggen LOUD

once i get the trigger propperly set up, it will have the trigger pull length of a 3-way and probably be electro-light

routing the LP lines to the inside of the frame is one major bitch though, everything wants to pinch, i might need to take some quality time with a dremel to make propper routing channels.

can;t wait to get an un-ported barrel and a loudener on this sucker though
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Old 03-12-2008, 10:50 PM   #5 (permalink)
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Remember you can't bang away on the trigger, as the gun needs a tiny bit of dwell for the carrier to cycle the hammer. If you fire too quickly, it'll short-stroke. It's not like a Vector, which has the dwell built in to the trigger clockwork mechanism.

And oh yeah, we want to see pics.
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Old 03-12-2008, 11:00 PM   #6 (permalink)
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Old 03-12-2008, 11:02 PM   #7 (permalink)
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pictures from the previous owner (MaD)

i'm going to have to make a new trigger and setup for the pneumatics, but in the end, i think it'll be pretty cool.

i honestly don't think i can fire faster than the dwell either :P

I should add that this thing is going to be the recipiant of an unported cocker barrel and a Noxx55 loudener.
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Old 03-13-2008, 03:22 AM   #8 (permalink)
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If you are looking for a new Trigger setup You should Check out my gallery, I have some pics of one of the mech Rainmakers that I made, its a set up thats worked out great for me.
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Old 03-13-2008, 07:54 PM   #9 (permalink)
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Mine has a Cocker frame and external 4-way (done by Rainman and Clearush).



And that's the loudest damn barrel you're likely to find.

You'd be surprised how easy it is to short-stroke. Turning up the lpr really helps.
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Old 03-13-2008, 08:01 PM   #10 (permalink)
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yeah, i've bought an unported barrel from Noxx, and i think i'll get another one cut down to about that size

as for the frame, i'm going to put in a Palmer's style setup in the grip, figure i can get the pull down to about 2-3mm when i get the propper stop figured out.

Still need to grab an external reg (thinking of going with an Ergo or BM reg) i was also thinking about getting a moderately large drop with it, so i can run it as a 'hand cannon' with a stubby 9oz CO2

yes, i am probably one of the few people out there who would consider a loudened Rainmaker with a 9oz tank and a sportshot hopper one of the neatest things to play with (and if i make it to castle this fall, i will definitely carry it, one way or the other!
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