Doad13 Posted July 7, 2016 Share Posted July 7, 2016 Hi guys, hopefully someone can help me out. I have an ICS G33 which is intermittently (80/20) cycling twice when the trigger is pulled in semi. These are two rounds at full power rather than two weak ones or one firing and one dropping out. I have checked the cut off lever which appears to be working fine. I have changed the selector plate & tappet plate. Anti reversal catch seems fine. Any suggestions on what it could be? Cheers in advance! Link to comment Share on other sites More sharing options...
Supporters Samurai Posted July 7, 2016 Supporters Share Posted July 7, 2016 You don't really see the wear on cutoff lever when it is worn. Link to comment Share on other sites More sharing options...
Doad13 Posted July 7, 2016 Author Share Posted July 7, 2016 True but cycling it by hand the cut off lever seems to disengage correctly. I'll look into getting one though any other parts that might be worthwhile getting since postage is going to be the same as the part? Link to comment Share on other sites More sharing options...
Supporters Rock-climby-Dave Posted July 7, 2016 Supporters Share Posted July 7, 2016 They don't have a mosfet uit in them do they? or am I thinking of their MP5s? they tend to overcylce if the mosfet is set to the wrong battery Link to comment Share on other sites More sharing options...
Doad13 Posted July 7, 2016 Author Share Posted July 7, 2016 Nah there's no MOSFET on it. One thing I was thinking is could it be due to the fps / spring being low? Its only firing at around 270. Link to comment Share on other sites More sharing options...
Supporters Sitting Duck Posted July 7, 2016 Supporters Share Posted July 7, 2016 Nah there's no MOSFET on it. One thing I was thinking is could it be due to the fps / spring being low? Its only firing at around 270. That might have a part to play in it if pushing 9.6v or 11.1v on a knackered spring with worn cut off lever tbh - I don't think it is that easy to fit a jumbo mofo lipo's in there but ICS motor's - well the M4's do run a bit quicker than G&G M4's with lame 18k motors So it could be 6 of one & half a dozen of the other you need to post up as much info as possible on stuff battery, rps, fps blah blah blah your drop in fps could most likely be a worn piston o-ring as well as a faded spring if the gun is used which if used then yeah cut off lever also sounds worthy of investigation As Samurai said - you don't see the wear until you compare a new replacement = f*ck me its knackered !!! v2 pic on the net to demonstrate: please note also that they are of a different make and they do vary a bit like most stuff tappet plates, selector plates, cut off, even trigger switch too - plus exessive play in worn 2 piece triggers - not causing semi issues but some bits in some boxes are nigh on $hit to fit in properly The cut off levers are from different makes - the new one is not so rounded at lever's lifting lug, the guides on the arm itself isn't so rounded, the spring mount is squarer so the operation will need to be checked thoroughly when fitting Think it is a cheapy oem cut off - reckon maybe big dragon/acm from say taiwangun - looks similar to some bits I got deffo not a new shs cut off lever Link to comment Share on other sites More sharing options...
Doad13 Posted July 7, 2016 Author Share Posted July 7, 2016 Cheers for the info! Fps is around 270. Battery is a turnigy nano-tech 1800mah 7.4v lipo, 25c-50c (deans connection) RPS not sure of. Sounds like a new cut off lever, spring, and possibly the piston O ring. Link to comment Share on other sites More sharing options...
Supporters Sitting Duck Posted July 7, 2016 Supporters Share Posted July 7, 2016 running stock internals even with deans and stuff you probably only hitting 16 to 18rps absolute max @ say 300fps so yeah cut off lever needs further investigating as Samurai said o-ring could be crap & spring on a 250mm or so G36c - m110 should do you on a g33 with a 263mm barrel wouldn't go any higher in case she runs too hot so yeah new o-ring & spring wouldn't hurt while you got her open sounds a weak spring ain't helping if she fires twice on 7.4v 25c with that fps too Link to comment Share on other sites More sharing options...
Doad13 Posted July 7, 2016 Author Share Posted July 7, 2016 Sounds reasonable now time to find the parts and get an order in. It won't be useable for this weekend though! Ha. Link to comment Share on other sites More sharing options...
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