rapide
Computer
- Jul 17, 2003
- 1
I am in the process of manufacturing a kickstart level for a 750cc motorcycle.
The question is what kind of steel and process to use to make it strong and tough enough?
It is quite a complicated shape so it would be useful to cast it rather than forge it but I have assumed a casting would not be strong enough. Is this true or would a casting work with the right steel and heat treatment?
If it was forged (probably by hand) it could be made in one piece or the level section forged and the foot peice and clamp welded on afterwards. Welding would be another factor in the choice of steel and heat treatment.
The kickstart lever must be strong enough to stand the full weight of the rider about 12 inches away from the kickstart shaft without bending or breaking. The kickstart lever must be chrome plated without affecting its strength.
Looking at some of the application information the following two steel types looked interesting but I would be making an educated guess.
Nickel-chromium Steel Specification No. 3330. -- is intended for very important structural parts. The high nickel and chromium contents make it exceedingly tough and strong when treated heat treatment appropriately
Chromium-vanadium Steels Specification No. 6140. -- This is a very good quality of steel for use where a high degree of strength is desired in conjunction with considerable toughness. Its fatigue-resisting qualities are very high, and it is a first-class material for high-duty shafts.
The question is what kind of steel and process to use to make it strong and tough enough?
It is quite a complicated shape so it would be useful to cast it rather than forge it but I have assumed a casting would not be strong enough. Is this true or would a casting work with the right steel and heat treatment?
If it was forged (probably by hand) it could be made in one piece or the level section forged and the foot peice and clamp welded on afterwards. Welding would be another factor in the choice of steel and heat treatment.
The kickstart lever must be strong enough to stand the full weight of the rider about 12 inches away from the kickstart shaft without bending or breaking. The kickstart lever must be chrome plated without affecting its strength.
Looking at some of the application information the following two steel types looked interesting but I would be making an educated guess.
Nickel-chromium Steel Specification No. 3330. -- is intended for very important structural parts. The high nickel and chromium contents make it exceedingly tough and strong when treated heat treatment appropriately
Chromium-vanadium Steels Specification No. 6140. -- This is a very good quality of steel for use where a high degree of strength is desired in conjunction with considerable toughness. Its fatigue-resisting qualities are very high, and it is a first-class material for high-duty shafts.
