Replacement gears for Chester Champion 20V mill

[CharlieRam]

I've seen the belt mod somewhere but can't help thinking rather than having plastic gears why not have metal ones and use a shear pin to drive it, it would be much cheaper to replace a shear pin.

[lucan07]

I have one model down the X1SP 500w brushless with timing belt which converted to CNC and tend to use 0.25mm DOC with flycutter at 900mm/m without problem, these are mini in my case micro machines though and need to be listened to especially with geared drives if they sound unhappy or under stress they are prone to self destruct if not listened to. #As for getting new gear for it I can only think of http://www.beltingonline.com/gears-r...1611ed7i9j90o4 they are best value I have found.

[komatias]

Gears have backlash and this shows up as ugly surface finish. I seem to remember that littlemachineshop in the US did metal gears. If you have time and cash I would say go 700W brushless motor with belts.

[magicniner]

HPC Gears supply a huge range of gears

http://www.hpcgears.com/

- Nick

[CharlieRam]

Feeling a bit thick here, How do I know what gears to order if I went that route (count the teeth,O/D and angle or would I get a matched pair with the same centre distance?), TBH I would rather the belt conversion but for now a replacement gear was the quickest option but £18 for a bit of plastic which I know is going to fail fairly quick is a bit gutting. After owning the M/C for only 7 months I would of thought it's not fit for purpose if the gear mangles like that? I mean with a bed size of 700mm I'm not going to be machining watch parts am I!