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March 28th, 2011, 13:25
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#1 |
New motor "dead spot"
Hello all,
So I have worked on a couple dozen guns over the past 3 years. I have learned by hours of research and by "doing". Today I am at a roadblock... Working on a friends M4. Mechbox maintanance, new spring, and new "beefier" motor. All back together the way it should be... zzzz zzzz zzzz click... Shot fine for a few bursts then click, nothing. Take motor out, hook up to power, nothing. Hmmmm... Grab pinion gear, turn motor one "bump", try the powere again wiiiirrrrrrr wiiiiirrrrr. Reassemble. Gun shoots a few bursts then click again. Same procedure, exact same problem. Just took it apart for the 3rd time and confirmed that there is a "dead" spot in the motor...or at least that is what I deduce. It is a Guarder infinite torque up long motor. Is this an easy fix or is the motor a bad one that had poor QC? Any an all help is appreciated. Thank you.
__________________
Call sign: Usurper Last edited by Troy T. Moore; March 28th, 2011 at 13:25.. Reason: spelling |
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March 28th, 2011, 13:43
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#2 |
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Official ASC Bladesmith
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Found the same issue on a well used G&G motor (M14 set as semi only and used as a DMR of sorts, with many BBs in the air at the same time), including on the bench, would spin then stop after a few spins, turn the shaft and it'd go again a few times then stop. Then............ it actually caught fire! Lol, smoke poured out of it and even half an hour later it was still very warm to the touch.
Nutshell, it's fucked, in the one I worked on it was a burned brush, the one you are working on is likely the same. Only fix is to buy another one. |
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March 29th, 2011, 18:22
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#3 | |
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You can buy replacement brushes from a hobby/rc shop. RC really went brushless many years ago so you will be hard up to find something that fits, or more likely anything at all. You can modify a set of brushes to fit, but you will need to break them in afterward.
__________________
Do you know what ruins airsoft? (Chair), (Drama), (Air), (Sugar) softers, filthy casuals --- Quote:
WANTED PTW Receiver PRIME, STG, Factory |
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March 29th, 2011, 19:58
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#4 |
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I'd go with a defective brush or contact too!
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March 29th, 2011, 21:01
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#5 |
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Motor dead spot is rarely brushes. It is almost always commutator/pole connection or a dud winding. Often it is not repairable.
For the amount of effort it will take to try to fix the problem, with poor prognosis, it would be better just to replace the motor.
__________________
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. |
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