Engine sprockets

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bevanclark
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Engine sprockets

Postby bevanclark » Tue May 07, 2019 8:29 am

Hi folks,
Just wondering:
What grade of steel would normally be used to make engine sprockets ? Also, would they normally be hardened by some process ?
The same question would apply to the sliding member of the engine shock absorber.
Cheers,
Bevan

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Eero.Korhonen
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Re: Engine sprockets

Postby Eero.Korhonen » Tue May 07, 2019 9:09 am

Hi Bevan,
I don't know about engine sprockets, but in years ago we used to make gearbox sprockets from
industrial ones and they last long enough. Maybe you can take a file with you and test
the hardness. We simply cut the center off in lathe and weld it to the new sprocket.
Br, Eero
Ariel VH 1954, IZH 350 1962, H-D Sportster Hugger 1992, AOMCC Member 133

nevhunter
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Re: Engine sprockets

Postby nevhunter » Tue May 07, 2019 9:54 am

The sprocket is not as critical as the cam face and sliding component. I would suggest a deep case( Carburising of EN 29Bor 36A. If you harden all the way through it could shatter. This applies particularly to the earlier type sliding piece which is quite thin in section, and has been known to fracture. Nev


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