mcarterbrown.com  

Brass Eagle Brass Eagle owners can hang out here

Reply
 
Thread Tools Search this Thread
Old 06-04-2008, 08:24 PM   #1 (permalink)
Rec Poster
 
Join Date: Jun 2008
Location: Tucson, AZ

Rainmaker cycling questions

I've got a well-modified Rainmaker; Marty mods, Thunderboard LCD, external regs, etc. My issue comes up if I turn up the rate of fire, the gun will fire the first shot then all that happens is the bolt will cycle but no big pop from the barrel. I don't usually play with it on full auto but it's nice to know what's going on with it. Anything up over 8bps and I get this, sometimes it will fire with every hit but mostly not.

I've tried a variety of dwell settings from low 40's up to low 50's and it doesn't seem to make a difference. I haven't checked the timing yet but I got the measurement from a thread on here so I'll give it a check.

Any ideas?
Bisbonian is offline   Reply With Quote
Old 06-04-2008, 08:26 PM   #2 (permalink)
Fear the Beer!
 
forstgump's Avatar
 
Join Date: Jan 2008
Location: The O.C. 53154

I've had that cycle problem before and it was the "Timing" length.
__________________
Badges? We don't need no stinking badges!
MCB Feedback
Icd-0 Feedback

Quote:
Originally Posted by melkson View Post
After I found out I had a screw loose, he gave me a good short screw. Filled my hole completely.
forstgump is offline   Reply With Quote
Old 06-05-2008, 11:55 AM   #3 (permalink)
Rec Poster
 
Join Date: Jun 2008
Location: Tucson, AZ

Quote:
Originally Posted by forstgump View Post
I've had that cycle problem before and it was the "Timing" length.
I'll go ahead and check that. I was wondering about it but couldn't find the correct adjustment until I got on here yesterday. That would be an easy fix!
Bisbonian is offline   Reply With Quote
Old 06-05-2008, 01:00 PM   #4 (permalink)
Active Member
 
paintball sycho's Avatar
 
Join Date: Mar 2008

could also be the hammer spring needs replacing, had a weak one in one of my old rm's and it did that also.
paintball sycho is offline   Reply With Quote
Old 06-05-2008, 01:43 PM   #5 (permalink)
Thick
 
HurtCow's Avatar
 
Join Date: Mar 2006
Location: Rocklin, CA
Send a message via AIM to HurtCow

CCM Fan
AKA Fan
Palmers Fan
Try turning up the lpr pressure.
__________________
Everybody loves me!

If I hurt your feelings or otherwise offended you, click here.
HurtCow is offline   Reply With Quote
Old 06-05-2008, 01:57 PM   #6 (permalink)
Rec Poster
 
Join Date: Jun 2008
Location: Tucson, AZ

Quote:
Originally Posted by HurtCow View Post
Try turning up the lpr pressure.
I gave that a thought but just haven't done it yet. I've got a Rock LPR on there, should I just turn it up until it leaks out the MAC then back it off a bit?
Bisbonian is offline   Reply With Quote
Old 07-15-2008, 02:51 PM   #7 (permalink)
Active Member
 
Mad Marty's Avatar
 
Join Date: Jul 2008
Location: San Diego, CA

the first question I would ask is...Have you ever gotten it to cycle this fast with your current setup?

I would second what HurtCow said. A weak hammer spring could cause it, but would not be my first choice.

This is what I use to recommend guys do first.

1. Remove the trigger frame, but leave everything connected.
2. Lay the gun on a bench and gas it up, turn it on.
3. Fire the gun and watch the ram cycle. you should be able to see the carrier and hammer latch.
4. Cycle the gun fast or the way that makes it mis-fire (short-stroke), watch the carrier latch the hammer.

The Rain Maker can short-stroke at both ends of the fire cycle. It can miss latching the hammer on the back stroke and it can miss hitting the sear on the forward stroke. Low LPR press will cause the ram to move slower, which could cause both misses. Low main reg pressure or a slow recharge rate can also cause the short-stroke on the backword movement. Also, a weak valve spring will do that too.

If it is missing on the forward stroke, then it is a matter of speed and timing. The LPR is the first adjustment to make; then try timing, something higher than 50. I believe that setting is for both directions. So the would be 25 ms to move forward and 25ms between shots; but I could be wrong on that. If I remember right, I had mine set to 65. Also if the ram timing is on the long side, that could cause it to miss the sear when shooting fast.
__________________
Mad Marty

"All that is necessary for evil to triumph is for good men to do nothing"

Edmund Burke
Mad Marty is offline   Reply With Quote
Reply

  mcarterbrown.com » Paintball » The Armory » Brass Eagle

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump


All times are GMT -4. The time now is 11:57 PM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO
© MCB Network LLC