Systema Helical Gear Set Problem

Avenging Angel · May 8th, 2007, 02:00

I'm having a problem with a set of System helical gears and I'm not exactly sure how to fix the problem.

When I install the gears and go fire the gun, a single BB will shoot and then I get nothing for another 7 - 10 pulls of the trigger at which point 2 BB's will come out at the same time. I've installed the gears to the traditional 1 o'clock setting so I don't think that the problem is with the timing.

My first guess would have been that it would be the connection between the nozzle and the tappet plate but, that is all in order so, what is the next thing to check?

I've tried these gears on a version 2 and a version 6 mech box and the same thing happens on both guns. The problem goes away as soon as I install the stock gear set again. Did I just get a bad set of gears?

Murdoch · May 8th, 2007, 02:05

Is this in a version 3 mechbox? If so, does the mechbox cycle properly when run outside of the gun body?

damage · May 8th, 2007, 02:06

Helical Gearset is shim sensitive. Get it right and everything will be fine.

mcguyver · May 8th, 2007, 02:07

Make sure that all your gear shafts are firmly pressed into each gear. I experienced this problem with the bevel gear on a helical set years ago. Grab the shaft wuth a pair of pliers and see if you can spin the gear (by hand only). If you can, that gear is toast and not repairable. If the splines are smoothed out, then it will never grab the gear and will need to be replaced.

Also, look at your tappet for any evidence that the nub on the sector gear is bypassing the tappet. You should see some wear marks if this happening.

Brakoo · May 8th, 2007, 02:08

Have you tried slowly turning the gear when you have the gearbox opened in front of you. I know that with a V2 it's not necessarly the easiest thing to do but it looks like your gears are not making contact with something here and since you tried it in 2 different mechboxes it cannot be the pinion gear or the piston.

damage · May 8th, 2007, 02:12

Wait. What gearset is it? If it is Infinite gearset you need to modify the lug on the switch assembly.

Avenging Angel · May 8th, 2007, 02:15

mcguyver wins (and gets a cookie), the nub on the sector gear was bypassing the tappet plate more often than not. Thanks guys!

mcguyver · May 8th, 2007, 02:19

Quote:

Originally Posted by Avenging Angel

mcguyver wins (and gets a cookie), the nub on the sector gear was bypassing the tappet plate more often than not. Thanks guys!

I only take Timmie's X-large triple/triple. Just cause you're in Calgary means nothing when Timmie's is involved!!!

Avenging Angel · May 8th, 2007, 02:20

LOL! If you come out to the 24 hour game that JOC is hosting I'll be sure to have the Timmies ready for ya!

Brakoo · May 8th, 2007, 02:31

Damn and to think I missed a chance to have some free timmy. :-\

mcguyver · May 8th, 2007, 02:37

I'm not sure about the JOC game, but I'll be in Olds on the 26th.

ILLusion · May 8th, 2007, 15:44

Quote:

Originally Posted by Avenging Angel

mcguyver wins (and gets a cookie), the nub on the sector gear was bypassing the tappet plate more often than not. Thanks guys!

Check your shimming. If the gear height isn't set right, it will cause this problem by pushing the tappet plate out of the way and out of its grooves.

safx · May 8th, 2007, 16:38

Love your new sig, nice CO2 M870

Hope she's still kicking butt

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May 8th, 2007, 02:00	#1
Avenging Angel Trader rating Join Date: Feb 2004 Location: Calgary, AB	Systema Helical Gear Set Problem I'm having a problem with a set of System helical gears and I'm not exactly sure how to fix the problem. When I install the gears and go fire the gun, a single BB will shoot and then I get nothing for another 7 - 10 pulls of the trigger at which point 2 BB's will come out at the same time. I've installed the gears to the traditional 1 o'clock setting so I don't think that the problem is with the timing. My first guess would have been that it would be the connection between the nozzle and the tappet plate but, that is all in order so, what is the next thing to check? I've tried these gears on a version 2 and a version 6 mech box and the same thing happens on both guns. The problem goes away as soon as I install the stock gear set again. Did I just get a bad set of gears?

May 8th, 2007, 02:06	#3
damage Trader rating Join Date: Jan 2005 Location: Port Coquitlam, BC	Helical Gearset is shim sensitive. Get it right and everything will be fine. __________________ Team P.I.M.P. Vancouver BC -Guntech(PM or E-mail only)

May 8th, 2007, 02:07	#4
mcguyver Trader rating Join Date: Aug 2005 Location: Northern Alberta	Make sure that all your gear shafts are firmly pressed into each gear. I experienced this problem with the bevel gear on a helical set years ago. Grab the shaft wuth a pair of pliers and see if you can spin the gear (by hand only). If you can, that gear is toast and not repairable. If the splines are smoothed out, then it will never grab the gear and will need to be replaced. Also, look at your tappet for any evidence that the nub on the sector gear is bypassing the tappet. You should see some wear marks if this happening. __________________ Age verifier Northern Alberta Democracy is two wolves and a sheep discussing what's for dinner. Freedom is the wolves limping away while the sheep reloads. Never confuse freedom with democracy.

May 8th, 2007, 02:05	#2
Murdoch Trader rating Join Date: May 2006 Location: Scarborough, Ont.	Is this in a version 3 mechbox? If so, does the mechbox cycle properly when run outside of the gun body?

May 8th, 2007, 02:08	#5
Brakoo Trader rating Join Date: Dec 2003 Location: Laval, Quebec	Have you tried slowly turning the gear when you have the gearbox opened in front of you. I know that with a V2 it's not necessarly the easiest thing to do but it looks like your gears are not making contact with something here and since you tried it in 2 different mechboxes it cannot be the pinion gear or the piston. __________________

May 8th, 2007, 02:12	#6
damage Trader rating Join Date: Jan 2005 Location: Port Coquitlam, BC	Wait. What gearset is it? If it is Infinite gearset you need to modify the lug on the switch assembly. __________________ Team P.I.M.P. Vancouver BC -Guntech(PM or E-mail only)

May 8th, 2007, 02:15	#7
Avenging Angel Trader rating Join Date: Feb 2004 Location: Calgary, AB	mcguyver wins (and gets a cookie), the nub on the sector gear was bypassing the tappet plate more often than not. Thanks guys!

May 8th, 2007, 02:20	#9
Avenging Angel Trader rating Join Date: Feb 2004 Location: Calgary, AB	LOL! If you come out to the 24 hour game that JOC is hosting I'll be sure to have the Timmies ready for ya!

May 8th, 2007, 02:31	#10
Brakoo Trader rating Join Date: Dec 2003 Location: Laval, Quebec	Damn and to think I missed a chance to have some free timmy. :-\ __________________

May 8th, 2007, 02:37	#11
mcguyver Trader rating Join Date: Aug 2005 Location: Northern Alberta	I'm not sure about the JOC game, but I'll be in Olds on the 26th. __________________ Age verifier Northern Alberta Democracy is two wolves and a sheep discussing what's for dinner. Freedom is the wolves limping away while the sheep reloads. Never confuse freedom with democracy.

May 8th, 2007, 16:38	#13
safx Trader rating Join Date: Nov 2005 Location: Toronto, St. Clair West	Love your new sig, nice CO2 M870 Hope she's still kicking butt __________________ Retired — Freedom 35

Systema Helical Gear Set Problem

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