Main Motorcycle: Triumph Sprint ST 955i
Join Date: Jan 2009
Location: Whaplode St. Catherine, Lincolnshire
Extra Motorcycle: Triumph Sprint ST 955i
Thanks for the messages of help and support.
I am still working on bringing this baby back to new and have not given up, just got a bit delayed because of circumstances this end.
I will post some pics tomorrow hopefully of the replacement swing-arm and bits from the donor bike.
I have had all the bits glass-bead shot blasted.
I then had them powder-coated, (except the swing-arm), but a problem arose that has caused me to have the parts re-stripped and prepared differently before I get them powder-coated again.
When alloy goes through an oven, as happens when powder-coating is used, it can create a host of problems.
The main problem I've discovered with alloy, as a compound, has trapped properties held with-in the alloy when it cools after being moulded or pressed.
When heat is applied to this it causes a problem of these contaminates coming to the surface due to the expansion of the alloy part(s).
Contaminates can also penetrate the alloy, hydrogen being a pest of one type to attack alloy metals.
I'll not give a science lesson on this as i'm sure some people in the forum are better placed to explain the science and technical properties of metals in the making and usage.
Anyway as a result, the parts after they came through the powder-coating oven had lots of tiny blisters to the powder which had come from the inner surface to the outer surface.
I've also done some other updates and rebuilt some other parts on the bike which i'll get to on this thread.