Motor Reving, but no piston movment?

Silent_Angel · April 10th, 2010, 23:08

I'm was just taking ont my AEG for some exercise since it hasn't been fired for quite some time. when I Pulled the trigger I can hear the motor reving, but there weren't any piston movement... and moving the gun I can hear some small object moving inside the gun. Now I'm suspecting that some gear in there is broken, but ths guns been fired no more than 200rds, so I'm wondering is there anyother issue that might cause this problem? (motor not high enough, something is stuck etc?) Just kind of hard to believe this kind of failure for almost a new gun.

For those that need to know its a VFC SCAR Light.

jamuke · April 10th, 2010, 23:16

possibly the motor gear is not engaging, or more than likely a broken gear

HKGhost · April 10th, 2010, 23:27

Best way to know for sure is to open her up. I would always check the internals before trying to fire if it hasn't been used for awhile regardless of how many shots been fired.

Quote:

Originally Posted by Silent_Angel

I'm was just taking ont my AEG for some exercise since it hasn't been fired for quite some time. when I Pulled the trigger I can hear the motor reving, but there weren't any piston movement... and moving the gun I can hear some small object moving inside the gun. Now I'm suspecting that some gear in there is broken, but ths guns been fired no more than 200rds, so I'm wondering is there anyother issue that might cause this problem? (motor not high enough, something is stuck etc?) Just kind of hard to believe this kind of failure for almost a new gun.

For those that need to know its a VFC SCAR Light.

Styrak · April 10th, 2010, 23:33

It's either a stripped gear or a stripped piston.

Silent_Angel · April 11th, 2010, 00:18

Sucks.... looks like I have to play around with it then... never opened the gearbox myself before. This is gonna be fun

D.Kovacs · April 11th, 2010, 09:37

what battery you using? a buddy had a similar thing happen, the piston choked up b/c he was using an 8.4v, which didn't give enough power to cycle the piston fully, causing it to do exactly what you're saying, had o be taken apart for the piston to be unjammed.

Geoffrey B. · April 11th, 2010, 09:43

Quote:

Originally Posted by Silent_Angel

Sucks.... looks like I have to play around with it then... never opened the gearbox myself before. This is gonna be fun

Have to learn somewhere, There is lot's of great tutorials though =)

Gunny_McSmith · April 11th, 2010, 14:11

mechbox.com...look at their "FTK installation video" ....shows all the procedure of opening a mechbox....

BTW...dont touch the shimming...lol

CJay · April 11th, 2010, 15:08

No way it's the battery. If the motor spins freely and the piston just isn't cycling then it's either a gear or the piston. I'll say from experience though they the VFC gears are terrible. My SCAR broke a tooth within hours of being unpacked and I've repaired more than one other since then ad well. Exactly the same thing in each case. Just my experience with VFC internals though so maybe I'm unlucky lol.

CDN__Player · April 11th, 2010, 15:13

Big tooth on your piston maybe. Just happened to me

coach · April 11th, 2010, 15:31

try swapping out the simple stuff before going into the mechbox.

try a good battery and then a motor that can pull a similar spring in a different box. just because the motor spins freely outside of the grip, doesn't mean it has the power or rather torque to turn under load.

CJay · April 11th, 2010, 17:07

but it aint outside the grip - unless ive totally misread the situation which is entirely possible lol so please feel free to correct me ;D

I agree that it would most likely be the battery in the case of the motor turning outside the grip but not inside but from the sounds of it hes got it sll together and the motor turns but no bang bang hehe. happened to 4 VFC's that I know of and this may be the 5th :P time will tell i guess but it seems the new VFC SCAR's you can buy in canada legally seem to be having this problem in common :P or like i said I'm just an unlucky sod hehe

coach · April 12th, 2010, 07:22

Ah yes. Missed that part. Disregard previous post.

It's a stripped piston or gear then. Pull the motor first and hope it's the pinion gear. Not likely but could alwyas hope!

CDN_Stalker · April 12th, 2010, 07:28

Stripped gear would cause whining. Stripped piston your gears will sound normal, but the gun won't shoot (as in the piston won't move). You likely have the rear tooth broken off, and it's floating around your mechbox. Don't cycle it any more til you open it up and find that piece of whatever floating around, you might damage your gears too.

Crunchmeister · April 12th, 2010, 08:35

Sounds like a stripped piston to me, although no way to tell unless you open it up.

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April 10th, 2010, 23:08	#1
Silent_Angel Trader rating Join Date: Feb 2005	Motor Reving, but no piston movment? I'm was just taking ont my AEG for some exercise since it hasn't been fired for quite some time. when I Pulled the trigger I can hear the motor reving, but there weren't any piston movement... and moving the gun I can hear some small object moving inside the gun. Now I'm suspecting that some gear in there is broken, but ths guns been fired no more than 200rds, so I'm wondering is there anyother issue that might cause this problem? (motor not high enough, something is stuck etc?) Just kind of hard to believe this kind of failure for almost a new gun. For those that need to know its a VFC SCAR Light.

April 10th, 2010, 23:16	#2
jamuke Trader rating Join Date: Dec 2008 Location: Trono	possibly the motor gear is not engaging, or more than likely a broken gear __________________

April 10th, 2010, 23:33	#4
Styrak Trader rating Join Date: Jan 2007 Location: Saskatoon, SK	It's either a stripped gear or a stripped piston. __________________ Airsoft Sales and Repair/Upgrade Services

April 11th, 2010, 00:18	#5
Silent_Angel Trader rating Join Date: Feb 2005	Sucks.... looks like I have to play around with it then... never opened the gearbox myself before. This is gonna be fun

April 11th, 2010, 09:37	#6
D.Kovacs Trader rating Join Date: Jun 2009 Location: Winnipeg	what battery you using? a buddy had a similar thing happen, the piston choked up b/c he was using an 8.4v, which didn't give enough power to cycle the piston fully, causing it to do exactly what you're saying, had o be taken apart for the piston to be unjammed.

April 11th, 2010, 14:11	#8
Gunny_McSmith a.k.a. Palucol Trader rating Join Date: Mar 2008 Location: MTL	mechbox.com...look at their "FTK installation video" ....shows all the procedure of opening a mechbox.... BTW...dont touch the shimming...lol __________________

April 11th, 2010, 15:08	#9
CJay Trader rating Join Date: Oct 2008 Location: Belle River, ON	Re: Motor Reving, but no piston movment? No way it's the battery. If the motor spins freely and the piston just isn't cycling then it's either a gear or the piston. I'll say from experience though they the VFC gears are terrible. My SCAR broke a tooth within hours of being unpacked and I've repaired more than one other since then ad well. Exactly the same thing in each case. Just my experience with VFC internals though so maybe I'm unlucky lol. __________________ "Creator of the Zombat Sniper - oh yeah baby"

April 11th, 2010, 15:13	#10
CDN__Player Trader rating Join Date: Jul 2008 Location: Ontario	Big tooth on your piston maybe. Just happened to me __________________ What is to be: TM P90 TR..............TM Desert Eagle................Remington700 + and...

April 11th, 2010, 15:31	#11
coach aka coachster Trader rating Join Date: Mar 2008 Location: T dot	try swapping out the simple stuff before going into the mechbox. try a good battery and then a motor that can pull a similar spring in a different box. just because the motor spins freely outside of the grip, doesn't mean it has the power or rather torque to turn under load.

April 11th, 2010, 17:07	#12
CJay Trader rating Join Date: Oct 2008 Location: Belle River, ON	but it aint outside the grip - unless ive totally misread the situation which is entirely possible lol so please feel free to correct me ;D I agree that it would most likely be the battery in the case of the motor turning outside the grip but not inside but from the sounds of it hes got it sll together and the motor turns but no bang bang hehe. happened to 4 VFC's that I know of and this may be the 5th :P time will tell i guess but it seems the new VFC SCAR's you can buy in canada legally seem to be having this problem in common :P or like i said I'm just an unlucky sod hehe __________________ "Creator of the Zombat Sniper - oh yeah baby"

April 12th, 2010, 07:22	#13
coach aka coachster Trader rating Join Date: Mar 2008 Location: T dot	Re: Motor Reving, but no piston movment? Ah yes. Missed that part. Disregard previous post. It's a stripped piston or gear then. Pull the motor first and hope it's the pinion gear. Not likely but could alwyas hope!

April 12th, 2010, 07:28	#14
CDN_Stalker Official ASC Bladesmith Trader rating Join Date: Jul 2003 Location: Ottawa, Ont.	Stripped gear would cause whining. Stripped piston your gears will sound normal, but the gun won't shoot (as in the piston won't move). You likely have the rear tooth broken off, and it's floating around your mechbox. Don't cycle it any more til you open it up and find that piece of whatever floating around, you might damage your gears too. __________________ STKR Knives http://www.facebook.com/#!/pages/STK...17036668380871

April 12th, 2010, 08:35	#15
Crunchmeister Trader rating Join Date: Nov 2007 Location: In your bedroom going though your underwear drawer	Sounds like a stripped piston to me, although no way to tell unless you open it up. __________________

Motor Reving, but no piston movment?

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