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February 2nd, 2009, 19:30
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#1 |
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Gearbox locking up
I have a Modify 110 spring that I'm trying to pull with a 9.6v crane stock battery. I can hear the motor try to engage the gears, but nothing happens...just a low click.
There is a systema high speed gearset installed. Also, I recently replaced the motor connector tabs with ones I bought at an auto parts store (not gold plated), and there is another set of the same connectors connecting the battery. So I guess what I'm asking is, should I be able to pull that spring with a high speed gearset and a 9.6v? Or is this an electrical problem? I'm confident the gearbox isn't over shimmed. I should also mention that there is some heavy wear on the motors' gear (forget what that little one is called). Although I don't think that's what's causing the problem as there's still plenty of tooth left to bite.
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February 2nd, 2009, 19:33
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#2 |
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try adjusting motor hight downwards and see if it fires.
if not...change that gear ot buy a new motor |
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February 2nd, 2009, 19:38
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#3 |
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Tys
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pinion
If the motor height is adjusted right (too high in and it'll "jam") and it still won't turn...then I'd try a different motor (borrow a known good one from a buddy). If that doesn't work...I'd redo the wiring. Doesn't take a whole lot of resistance loss before you starve the motor of juice. Definitely make sure the connectors are soldered...not just crimped into place. Careful of shorts...make sure it's all shrink wrapped. Good clean wiring goes a long, long way. I've come across both issues more than once and they're both simple fixes...after you pull your hair out in frustration. Best of luck! Tys |
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February 2nd, 2009, 19:57
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#4 |
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When I'm adjusting the motor height, there is less than a 1/4 turn between a horrible screaching noise (stripping the pinion gear I would assume), and lockup.
Also...and this is very annoying...I can't lower the motor height. It just gets stuck, and I end up having to pull the grip plate off to pop the motor back out. I thought it was the grip that was causing this, but it's been replaced and I still have the same problem.
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February 2nd, 2009, 20:10
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#5 |
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Here's what my pinion gear looks like:
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February 2nd, 2009, 20:11
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#6 |
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I kinda had same problem and found that it was the motor. replaced motor and now have no problems, could be part of your problem.
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February 2nd, 2009, 20:26
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#7 |
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Tys
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That pinion gear is done...tsk, tsk for using it...
 Swap the motor with a buddy's known good one. If it works, buy a new motor. Guarder infinite torque up is a great bang for buck. Tys |
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February 2nd, 2009, 20:50
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#8 |
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 ops:
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February 2nd, 2009, 21:59
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#9 |
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Official ASC Bladesmith
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Might want to check your wire placement around the motor, if not set correctly it doesn't matter when you do with the adjustment screw (besides tighten it) the motor will not move much at all.
Also, high speed gears < 100 spring. Shouldn't use a ~400fps with high speed gears, even a Modify 100 (~370fps) is a bit too much. They are typically designed for use with stock to 90m/s springs only. |
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February 2nd, 2009, 23:54
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#10 |
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Okay so the original owner of the gun said there was a systema high speed gear set installed, and he included a set of gears that I assumed were the original TM.
The lower set is what I just pulled out of my mechbox, and the upper set was included in the package. I meant to take the picture with the lower sector gear facing up, but it does not have holes in the face and it looks like it's made from pot metal. Is the lower set the original TM? 
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February 2nd, 2009, 23:56
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#11 |
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Top gearset is definitely Systema High speed and the bottom is TM.
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February 3rd, 2009, 06:00
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#12 |
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Gun should still be pulling the 110 spring with a 9.6 and stock gears, as others said it's the pinion gear. Because of the wear, it may have to be adjusted to high for contact to even be made (screeching and full stop).
Some gun docs have a pinion pulling tool and can replace your pinion gear, which is cheaper than buying a new motor. Also, RC shops should have this tool. Always make sure your wiring doesn't come in the way of your motor plate sitting around the bell of the motor, that'll cause the motor to sit too high as well. |
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February 3rd, 2009, 09:19
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#13 |
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Official ASC Bladesmith
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RC shops have the tool for $20-25, the one I had needed to be ground open in order to fit onto the motor, and worked but eventually broke. I bought the one from Jugglez, kinda neat yet a bit fiddly, but it works well. Just to buy to use once, not worth it, but if you can get someone to pull and has a replacement, you can easily pay for shipping both ways if needed and will be cheaper than even just buying the tool! I think I have a couple used motor gears I took off dead motors before tossing out.
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February 3rd, 2009, 12:39
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#14 |
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Will I get a better ROF with the Guarder Infinite Torque Up over the EG1000?
I think what's causing the motor to jam up high is to do with the butt end of the motor as it's a little mashed up. Possibly the motor plate as well.
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February 3rd, 2009, 13:12
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#15 |
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Official ASC Bladesmith
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EG700 will serve you better than the EG1000, it put out more torque, therefore increasing your ROF a bit, and is quieter too.
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