For a while I am trying to make a speedster running again.
The way the front axle is attached to the frame do not make me happy and I was looking for a better way to do it.
Yesterday I found this on a swap meet:
Now I am looking for the right bolts and nuts to add the front axle to the part.
I think the bolt are UNF 11/16, 5 inch long 4.1/4 plane.
Can someone help me with these bolts an nuts, castle nuts if possible.
McMaster Carr (https://www.mcmaster.com/) has drilled bolts and castle nuts, called slotted nuts by them. I am not sure what the delivery is in Belgium but I think they ship world wide. I have an account with them and ordering is very simple. Just one click. Too simple really.
Excellent score Andre!! I’ve never seen lowering brackets like those before... similar to Laurel brackets, but allow for the upper wishbone. Very neat!
As for the bolts, you won’t find 11/16” bolts in any catalog. I make my own bolts from warn out T rear axle shafts. They are tough, but machine nicely.
I saved the web page and took contact to order the needed stuff.
I believe older Cummins truck engines used 11/16" head bolts with full size shanks, models that start with H or NH 1930s till 1990, but probably not in Europe. Too long, but might machine. Dave in Bellingham, WA
I'm impressed you found such a cool speedster item in europe - there weren't much of that kind sold over here..
11/16" is about 17.5 mm, so if you find M18 bolts of fitting length, then it should be possible to ream out the holes for 18 mm?
I looked again at McMaster Carr and could not find any 11/16 bolts. I think this discussion will help: