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Nutster

Gearboxes

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Just a warning for you so that you don't go and do what I did, which was to take the gearbox apart without knowing what you are doing.

 

Post any useful links for how to correctly disassemble your gearboxes.

 

Nutster

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Notes

 

Google.com the gun you are going to disassemble

 

www.Youtube.com search your gun there for tips.

 

Mechbox.com some useful videos there.

 

On a final note : Take pictures regularly as you may forget when you put it all back together and also keep ALL screws safe and peices safe turst me they can be a annoying to replace, maybe on a magnet?

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If you are just starting out, then take the gearbox apart in a large clear bag. This way if you find things popping out at you, you won't loose them in a hurry. There are many videos on the net of how to take a gearbox apart, but if you have trouble, PM me here, andi'll help by making a video on how to do this for you.

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Check www.mechbox.com, watch the tutorial videos.. as for keeping screws safe, make a paper cut-out of the gearbox or gun and put the screws through the paper at the corresponding location. Will keep things neat and tidy.

That paper trick is SUCH a good idea! I normally bung my bits in a little box, but I like your way better. :)

 

Photographing everything is a really good idea. As might videoing be. I photographed my spring swap, but at the critical time I found I ran out of hands when changing my spring. Next time I'll video the process.

 

As it's a split gearbox the spring swap was easy, I'm leaving the lower gearbox just as it is until I need to mess with it.

Not that I'm chicken or anything, I could strip it down and reassemble it, easy! :rolleyes:

 

Okay, maybe not just yet! :P

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Don't do what I did the other day. Crack open the side of the gearbox and spring popped out blowing everything out of the gearbox, lesson truly learnt.

Sitting Duck likes this

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Don't do what I did the other day. Crack open the side of the gearbox and spring popped out blowing everything out of the gearbox, lesson truly learnt.

 

Small screwdriver up the back end of the spring guide. And more hands than average...

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Don't do what I did the other day. Crack open the side of the gearbox and spring popped out blowing everything out of the gearbox, lesson truly learnt.

 

Yup - never done that before - I do tell great big lies though#

even when you are ready & prepared - so you think...

it still explodes on ya first time or two - open box in carrier bag

(helps to prevent you searching hands n knees for that tiny spring later)

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Problem I've had with trying to shim certain combinations of gearbox shell /bushes/gears is there isn't enough width in the shell for the gears to run freely. What worked for me is to put the offending gear in with one of the bushes (don't try this with bearings) the wrong way up. Then very carefully tighten down (not fully, just until you don't dare tighten any more for fear of stripping threads) the gearbox screws around it in an even pattern. Not recommended but it should push the gearbox sides out just enough to give the clearance needed.

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