C90Club.co.uk

Help [if possible] can anyone advise me if it could be possible to WELD a small piece of metal to the END of a Honda moped ..... the nut has sheared off, its a shame cos the bike is a bit better then spares ,I have managed to drill and tap the shaft, dead centre, so i could make a threaded bit to join up .......THANKS

Which model moped have you got ,this is a C90 forum . And what needs welding a photo might be useful .

thanks the honda sh50 is just to keep me mobile whilst i renovate my c90. cant do photoes 77yrs old school/ but its lost the 15mm on the end because the nut sheared off i had it running after i mig welded it ,but the welding did not last : i have lathe ,etc here ,but my only problem is the weld joint .THANKS

15 mm on the end of what ? CSMNL have exploded diagrams so if you can find your bike on there and then get the part number it may help .
The SH50 is a great little bike .

i have drilled and tapped the crank to accept a threaded 15mm piece so that it screws into the crank then weld it up and grind it back carefully.

CRANKSHAFT, BELT SIDE

Pointers are...mig,1 ton per inch, rutile or general stick welding 60,000 pound per inch then resin cored mig no way as it's rubbish,if it's possible to get a V on both sides personally l would use a hard facing or dissimilar welding rod of 2.5mm as the crank will be of tensile steel of unknown property's,done correctly it may hold and not crack but no guarantee's as it comes over that it's a small shaft with no room for errors.

Thankyou very much ..i will have to try and source a special welding rod .

Couldn't you use Loctite 638 if all you are doing is securing a length of thread ?.

There are some SH 50 cranks on eBay