V2 gearbox help

CLUB MEDD · June 29th, 2010, 16:48

I recently aquired a G&G GR4 CQB, the gun needs a fair amount of work. I just rewired the entire gearbox, put it back together to see if it worked and it didn't fire. I took the motor out far enough so it wasn't hitting the other gears and it is working great.

so it's getting power. I tried playing with the grip screw to back it off a bit thinking it was too tight and it just makes that grinding sound when it's not fulling engaging the gears. tightened it a little bit and then just clicks when I pull the trigger. I can only get it to do either or but not actually fire.

Any suggestions on what should be my next step?

venture · June 29th, 2010, 16:51

Several possibilities here.

Try a powerful battery, another motor, a circuit tester to see how much power loss there is between battery and motor.

CLUB MEDD · June 29th, 2010, 18:34

no luck there, tried another motor same thing. Motor works in my other AEG. checked wiring, it's all good.

CLUB MEDD · June 29th, 2010, 18:35

also tried with the piston and spring out, didn't make a difference. gears are moving easy when I move them with my finger when the gearbox is assembled without piston

Styrak · June 29th, 2010, 19:18

Did you reshim it? Perhaps you did it too tightly if you did.
When you're turning the gears by hand is the mechbox screwed down?

Darklen · June 29th, 2010, 19:20

Motor connected the right way (pos-pos/neg-neg)? AV latch reversed?

CLUB MEDD · June 29th, 2010, 19:44

when turning the gears by hand it is screwed down. also motor is hooked up correctly.

CLUB MEDD · June 29th, 2010, 23:16

some progress has been made. I reshimmed the gears again. Took out the piston and cylinder just to see if I could get the gears turning with the power from the motor. so I eventually got the gears turning. Now I'm thinking this has to be it, but no. I put the piston and cylinder in and the click is back. Now I pull the trigger and I get nothing.

Any ideas on what I should try next?

Styrak · June 29th, 2010, 23:50

What battery are you using (all details) and what power spring?
Might just be your battery vs spring power.

CLUB MEDD · June 30th, 2010, 00:21

I was using an 8.4v 1400mah, and have no idea what the spring is. I have a M110 so I'll probably throw that in just to see what's up, and I'll try my 9.6 and see where that gets me

Styrak · June 30th, 2010, 00:48

Try a large type battery. If that works (or your 9.6v mini works) then you don't have enough power to pull the spring.

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June 29th, 2010, 16:48	#1
CLUB MEDD Trader rating Join Date: May 2010	V2 gearbox help I recently aquired a G&G GR4 CQB, the gun needs a fair amount of work. I just rewired the entire gearbox, put it back together to see if it worked and it didn't fire. I took the motor out far enough so it wasn't hitting the other gears and it is working great. so it's getting power. I tried playing with the grip screw to back it off a bit thinking it was too tight and it just makes that grinding sound when it's not fulling engaging the gears. tightened it a little bit and then just clicks when I pull the trigger. I can only get it to do either or but not actually fire. Any suggestions on what should be my next step?

June 29th, 2010, 16:51	#2
venture Trader rating Join Date: Jun 2005 Location: Halifax	Several possibilities here. Try a powerful battery, another motor, a circuit tester to see how much power loss there is between battery and motor. __________________ Visit us at :www.ventureairsoft.ca

June 29th, 2010, 19:18	#5
Styrak Trader rating Join Date: Jan 2007 Location: Saskatoon, SK	Did you reshim it? Perhaps you did it too tightly if you did. When you're turning the gears by hand is the mechbox screwed down? __________________ Airsoft Sales and Repair/Upgrade Services

June 29th, 2010, 18:34	#3
CLUB MEDD Trader rating Join Date: May 2010	no luck there, tried another motor same thing. Motor works in my other AEG. checked wiring, it's all good.

June 29th, 2010, 18:35	#4
CLUB MEDD Trader rating Join Date: May 2010	also tried with the piston and spring out, didn't make a difference. gears are moving easy when I move them with my finger when the gearbox is assembled without piston

June 29th, 2010, 19:20	#6
Darklen Administrator Trader rating Join Date: Jan 2004 Location: Red Deer, AB	Motor connected the right way (pos-pos/neg-neg)? AV latch reversed? __________________ *ASC Age Verifier for Red Deer & Area Alberta*

June 29th, 2010, 19:44	#7
CLUB MEDD Trader rating Join Date: May 2010	when turning the gears by hand it is screwed down. also motor is hooked up correctly.

June 29th, 2010, 23:16	#8
CLUB MEDD Trader rating Join Date: May 2010	some progress has been made. I reshimmed the gears again. Took out the piston and cylinder just to see if I could get the gears turning with the power from the motor. so I eventually got the gears turning. Now I'm thinking this has to be it, but no. I put the piston and cylinder in and the click is back. Now I pull the trigger and I get nothing. Any ideas on what I should try next?

June 29th, 2010, 23:50	#9
Styrak Trader rating Join Date: Jan 2007 Location: Saskatoon, SK	What battery are you using (all details) and what power spring? Might just be your battery vs spring power. __________________ Airsoft Sales and Repair/Upgrade Services

June 30th, 2010, 00:21	#10
CLUB MEDD Trader rating Join Date: May 2010	I was using an 8.4v 1400mah, and have no idea what the spring is. I have a M110 so I'll probably throw that in just to see what's up, and I'll try my 9.6 and see where that gets me

June 30th, 2010, 00:48	#11
Styrak Trader rating Join Date: Jan 2007 Location: Saskatoon, SK	Try a large type battery. If that works (or your 9.6v mini works) then you don't have enough power to pull the spring. __________________ Airsoft Sales and Repair/Upgrade Services

V2 gearbox help

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