Maintenance & Technical > KX500 Original

Hardening Gears

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kiwikx500:
Just seen this advert with the guy saying he has re-cut the gears and hardened.

Take it re-cutting is filing the gears into better shape to take up wear ? How do they harded the gears ?

http://www.trademe.co.nz/Trade-Me-Motors/Motorbikes/Motorbikes/Dirt-bikes/auction-181090411.htm



(That website is #1 in New Zealand and the young guy that set it up reckons he was cold in his flat and looked for a heater on-line but could not find one so set the site up, 9 years later he sold it for $700 million, looks like a straight copy of another site to me :-D )

Mick:
I'm not familiar with "cutting" gears?  I imagine maybe it's referring to filing down some jagged edes.  The gears in my '89 had burs on some edges so sharp they cut my fingers like a razor blade.  And the hardening I think may be the use of cryogenics.  From what vaque understanding of metalurgy I do have I believe freezing gears in sub zero temperatures for several hours will cure a component of atleast some manufacturer defects.

Platypus:
If the gears were "cut" they would no longer have the same dimensions so the only possible thing I could come up with is hardfacing.  I worked at an iron foundry for a while and we had one part that we had to hardface for a street sweeper manufacturer.  Here is some info on hardfacing.

http://en.wikipedia.org/wiki/Hardfacing

kiwikx500:
Cheers

Sounds like could be a worthy investment, are the gears strong in a K5 ? Last long time ?

Mick:
My gears are 20 years old.  The motor has been modified a good deal for atleast ten of those.  Still work fine...

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