AMC Gearbox Kickstart Bush
Posted: Tue Feb 26, 2019 7:36 pm
I am rebuilding my gearbox and there is too much play in the kickstart shaft bushes.
I have bought one new one for the outer case but the inner case bush is out of stock with the usual suppliers.
No problem I will make one. I have removed the old bush and spark tested it and it seems to be iron rather than steel.
My question is does it matter so much is this bush is made of steel?
I am aware of the self lubricating properties of cast iron but given that this bush is immersed in oil and also the fact that the wear on it will be minimal, (ie.only a part of a turn every time the bike is started and in between nothing) then is iron really needed? Or would steel be OK. I only ask as I dont have any iron in stock of the right size. If its essential I could buy some but what do you think?
Also, does anyone know what the recommended clearance is on these bushings? Again I don't think its critical given the application and environment but if there is a recommendation i would like to use that as a starting point.
Thanks,
John
I have bought one new one for the outer case but the inner case bush is out of stock with the usual suppliers.
No problem I will make one. I have removed the old bush and spark tested it and it seems to be iron rather than steel.
My question is does it matter so much is this bush is made of steel?
I am aware of the self lubricating properties of cast iron but given that this bush is immersed in oil and also the fact that the wear on it will be minimal, (ie.only a part of a turn every time the bike is started and in between nothing) then is iron really needed? Or would steel be OK. I only ask as I dont have any iron in stock of the right size. If its essential I could buy some but what do you think?
Also, does anyone know what the recommended clearance is on these bushings? Again I don't think its critical given the application and environment but if there is a recommendation i would like to use that as a starting point.
Thanks,
John