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New (to me!) '77 CB400F - US model
taysidedragon:
The missing stud on left hand side is a worry. A bolt into a shallow threaded hole is not as strong or secure. You could possibly find yourself riding on only one shock.
A good engineering shop should be able to repair that back to standard.
The dome nuts are longer than a standard size nut, hence the spacers. David Silver sells them.
mattsz:
--- Quote from: taysidedragon on May 25, 2020, 12:04:07 AM ---The missing stud on left hand side is a worry. A bolt into a shallow threaded hole is not as strong or secure. You could possibly find yourself riding on only one shock.
A good engineering shop should be able to repair that back to standard.
The dome nuts are longer than a standard size nut, hence the spacers. David Silver sells them.
--- End quote ---
Thanks taysidedragon!
The threaded hole is 7/8" deep. Not what I'd call shallow - I wouldn't worry about the bolt pulling out, but I do think about the possibility of the whole spindle snapping off if it's "walls" are too thin after being drilled and threaded...
taysidedragon:
I didn't realise you had that much left to bolt into. I assumed it had snapped of at the frame.
It doesn't sound strong enough to me as it is. 🙁
mattsz:
--- Quote from: taysidedragon on May 25, 2020, 12:27:28 AM ---I didn't realise you had that much left to bolt into. I assumed it had snapped of at the frame.
It doesn't sound strong enough to me as it is. 🙁
--- End quote ---
No, the "spindle" that the shock bushing fits on is still there. More like just the threaded part broke off and someone drilled and threaded it. Here it is with the bolt partially inserted:
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How should this be repaired? Cut the whole spindle off and weld up a new one? Would the new one - spindle and threads - be machined from a single piece, or does a stud get threaded in, kind of like was done here?
Bryanj:
Me, i would make stud with the thread on the spigot one end and long enough to bottom out fitted with the best locktite and the correct thread on the visible part.
That "stepped" nut was for a carrier of some sort
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