Crank Shaft ABC Motorcycle information

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4 years 1 month ago #986 by Peter Gillespie
Replied by Peter Gillespie on topic Crank Shaft ABC Motorcycle information
Hi Paul and Tony
Thank you for your response. Paul , you are correct, I want to add more scrap crankshafts to my collection.
I wanted to keep this discussion Sopwith but it seems as if it was not only Sopwith who were thinning the center web. Gnome Rhone also seem to have thinner center webs on some of their crankshafts. See the photo. The range seems to be 11.3mm to 10mm

Detlev and I spent two hours on this today and we will be making the center web 10.25 mm thick.
Regards All


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4 years 2 weeks ago #1019 by Peter Gillespie
Replied by Peter Gillespie on topic Crank Shaft ABC Motorcycle information
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3 years 11 months ago #1026 by Gillespie
Replied by Gillespie on topic Crank Shaft ABC Motorcycle information



The first photo is the final crankshaft without the thread the key ways and the final size on the journals.
The second photo is after heat treatment. The area where the thread and key way must be is painted out before heat treatment and can be seen on the second photo.. now we will see how much distortion we got during heat treatment. I will report back soon. Regards
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3 years 11 months ago #1038 by Peter Gillespie
Replied by Peter Gillespie on topic Crank Shaft ABC Motorcycle information
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3 years 9 months ago #1072 by Peter Gillespie
Replied by Peter Gillespie on topic Crank Shaft ABC Motorcycle information
We have finished with the manufacture and now we need to test these Crank Shafts. They look beautiful. Regards
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3 years 9 months ago #1073 by Dabney
Replied by Dabney on topic Crank Shaft ABC Motorcycle information
Fantastic job, many congratulations. As you say they look amazing
best wishes Ian

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