Whats not right with this gearbox?

randas · July 31st, 2006, 20:38

I was having problems with my TM M16 VN (as desvribed in this thread) so I took the gearbox apart for the first time. I got the problem fixed (electrical contacts gunged up) but I think I put something back wrong, I reassembled (didnt really run into any problems) the gearbox and put the gun back together completley. When I tried to fire the gun (on semi) the gun made weird sounds (sounded like gears slipping) then the fuse blew.

Any idea whats wrong?

Trader rating · July 31st, 2006, 20:53

double check your antireversal latch...if its on wrong, it will catch the gears and pop the fuse.
and make sure you put the wiring back the same way...if you switch wires, it will turn the gears the wrong way and catch the antireversal latch and pop a fuse.

also check the motor height placment, if its to tight or to loose that can cause the problems also.

CDN_Stalker · July 31st, 2006, 21:01

The red wire from the trigger contacts to the battery (the one that is stripped of insulation in the pic) needs to be placed on the bottom. You have it on the top of the red wire that goes to the motor, the battery wire is raised above the mechbox shell, hence the motor shredding the teflon insulation.

Aside from that, I can't see anything else wrong with it at first inspection.

mcguyver · July 31st, 2006, 21:01

Make sure the switch buss (the little L-shaped piece in the center of the switch that the trigger moves to make contact). That piece needs to be in the grooves of the main body of the switch to effect smooth closure and be releasable by the semi-auto cut-out lever.

randas · August 1st, 2006, 15:13

ok, I rearranged the wires and i've still got problems

Video: Video of prob - Photobucket - Video and Image Hosting

It sounds 'sick' although it dose fire. Also after each shot the trigger sticks.
I tried playing with the little motor adustment screw, no luck.

CDN_Stalker · August 1st, 2006, 15:30

Any chance one of the red wires is preventing the trigger from returning to the forward position? Looks like a possibility one wire is pressing against the trigger somehow causing it to not return properly. Gotta make sure all wires are as flat and tucked away as possible from the trigger, safety bar, gears and motors.

Trader rating · August 1st, 2006, 15:37

sounds like motor height adjestment to me. that sick sound is usually from improper shimming or poor motor alignment.

CDN_Stalker · August 1st, 2006, 15:39

Quote:

Originally Posted by Droc

sounds like motor height adjestment to me. that sick sound is usually from improper shimming or poor motor alignment.

That too, but I'm trying to deal with the sticking trigger for now.

testtube · August 1st, 2006, 16:08

Cpould be the wire is to thick behind the triger

CDN_Stalker · August 1st, 2006, 17:00

One thing I see that I don't like is that red wire coming off the contact, the wire is coming off like this _/ when it should be vertical like this _! (might be part of your problem with sticking trigger, but might not, best to run the wires cleanly as I mentioned before.)

ILLusion · August 1st, 2006, 18:17

Also check the white part of the trigger circuit assembly (that the trigger pushes against) to make sure it's properly guided across the assembly.

Dirty Deeds · August 1st, 2006, 18:38

Just to recap on the wiring. And it sounds like your motor is too tight.

CDN_Stalker · August 1st, 2006, 18:54

Thanks Deeds, you da man! I'm good at shooting people, but not good with computers and photoshop.

randas · August 1st, 2006, 19:15

Ok, I cleaned up the wires, and now the trigger works fine.

I reassembled and its still makeing that same noise. I played around with the motor adjustment screw and it didnt help.

I dont think it would be the shims, because this is the first time its been opened, and It worked fine before. But just incase- Gear 1 has 2 on the bottom. Gear 2 has 1 on the top and 1 on the bottom. Gear 3 has 2 on the bottom. Is that how they should be?

Blastyman · August 1st, 2006, 19:28

Shims are generally different gun to gun.

But if you didn't change the gears or shims and put everything in back the way it was yeah there shouldn't be an issue.

Still sounds like the motor adjustment screw. Sure you adjusted it enough?

And did you put the little silver disk on the end of the motor for the adjustment screw to push on?

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July 31st, 2006, 20:38	#1
randas Trader rating Join Date: Mar 2005 Location: Winnipeg, Manitoba	Whats not right with this gearbox? I was having problems with my TM M16 VN (as desvribed in this thread) so I took the gearbox apart for the first time. I got the problem fixed (electrical contacts gunged up) but I think I put something back wrong, I reassembled (didnt really run into any problems) the gearbox and put the gun back together completley. When I tried to fire the gun (on semi) the gun made weird sounds (sounded like gears slipping) then the fuse blew. Any idea whats wrong? __________________

July 31st, 2006, 21:01	#3
CDN_Stalker Official ASC Bladesmith Trader rating Join Date: Jul 2003 Location: Ottawa, Ont.	The red wire from the trigger contacts to the battery (the one that is stripped of insulation in the pic) needs to be placed on the bottom. You have it on the top of the red wire that goes to the motor, the battery wire is raised above the mechbox shell, hence the motor shredding the teflon insulation. Aside from that, I can't see anything else wrong with it at first inspection. __________________ STKR Knives http://www.facebook.com/#!/pages/STK...17036668380871

July 31st, 2006, 21:01	#4
mcguyver Trader rating Join Date: Aug 2005 Location: Northern Alberta	Make sure the switch buss (the little L-shaped piece in the center of the switch that the trigger moves to make contact). That piece needs to be in the grooves of the main body of the switch to effect smooth closure and be releasable by the semi-auto cut-out lever. __________________ 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.

July 31st, 2006, 20:53	#2
Droc Guest Trader rating	double check your antireversal latch...if its on wrong, it will catch the gears and pop the fuse. and make sure you put the wiring back the same way...if you switch wires, it will turn the gears the wrong way and catch the antireversal latch and pop a fuse. also check the motor height placment, if its to tight or to loose that can cause the problems also.

August 1st, 2006, 15:13	#5
randas Trader rating Join Date: Mar 2005 Location: Winnipeg, Manitoba	ok, I rearranged the wires and i've still got problems Video: Video of prob - Photobucket - Video and Image Hosting It sounds 'sick' although it dose fire. Also after each shot the trigger sticks. I tried playing with the little motor adustment screw, no luck. __________________

August 1st, 2006, 15:30	#6
CDN_Stalker Official ASC Bladesmith Trader rating Join Date: Jul 2003 Location: Ottawa, Ont.	Any chance one of the red wires is preventing the trigger from returning to the forward position? Looks like a possibility one wire is pressing against the trigger somehow causing it to not return properly. Gotta make sure all wires are as flat and tucked away as possible from the trigger, safety bar, gears and motors. __________________ STKR Knives http://www.facebook.com/#!/pages/STK...17036668380871

August 1st, 2006, 15:37	#7
Droc Guest Trader rating	sounds like motor height adjestment to me. that sick sound is usually from improper shimming or poor motor alignment.

August 1st, 2006, 16:08	#9
testtube A Total Bastard Trader rating Join Date: Apr 2003 Location: Ottawa,Ont	Cpould be the wire is to thick behind the triger

August 1st, 2006, 17:00	#10
CDN_Stalker Official ASC Bladesmith Trader rating Join Date: Jul 2003 Location: Ottawa, Ont.	One thing I see that I don't like is that red wire coming off the contact, the wire is coming off like this _/ when it should be vertical like this _! (might be part of your problem with sticking trigger, but might not, best to run the wires cleanly as I mentioned before.) __________________ STKR Knives http://www.facebook.com/#!/pages/STK...17036668380871

August 1st, 2006, 18:17	#11
ILLusion GBB Whisperer Trader rating Join Date: Jun 2002 Location: Toronto	Also check the white part of the trigger circuit assembly (that the trigger pushes against) to make sure it's properly guided across the assembly. __________________ *Advanced Airsoft Armaments and Enhancements* Quick to the gun, sure of your grip. Quick to the threat, sure of your shot. Diligentia, Vis, Celeritas Accuracy, Power, Speed

August 1st, 2006, 18:54	#13
CDN_Stalker Official ASC Bladesmith Trader rating Join Date: Jul 2003 Location: Ottawa, Ont.	Thanks Deeds, you da man! I'm good at shooting people, but not good with computers and photoshop. __________________ STKR Knives http://www.facebook.com/#!/pages/STK...17036668380871

August 1st, 2006, 19:15	#14
randas Trader rating Join Date: Mar 2005 Location: Winnipeg, Manitoba	Ok, I cleaned up the wires, and now the trigger works fine. I reassembled and its still makeing that same noise. I played around with the motor adjustment screw and it didnt help. I dont think it would be the shims, because this is the first time its been opened, and It worked fine before. But just incase- Gear 1 has 2 on the bottom. Gear 2 has 1 on the top and 1 on the bottom. Gear 3 has 2 on the bottom. Is that how they should be? __________________

August 1st, 2006, 19:28	#15
Blastyman Trader rating Join Date: Feb 2003 Location: Edmonton ,AB	Shims are generally different gun to gun. But if you didn't change the gears or shims and put everything in back the way it was yeah there shouldn't be an issue. Still sounds like the motor adjustment screw. Sure you adjusted it enough? And did you put the little silver disk on the end of the motor for the adjustment screw to push on?

Whats not right with this gearbox?

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