SOHC.co.uk Forums > CB350/400
Busted Kickstart Knuckle
THUNDERDOWNUNDER:
Yep the 350 fourfits . I bought one last year and it works fine . I also bought a set of clocks of 350 four with only 50 miles on them .The Red line starts a bit early but I can live with that !
taysidedragon:
Since the 400 kickstart knuckles are getting harder to find and more expensive has anyone tried to repair a cracked or broken one?
There is a definite design fault on the knuckle, there is just not enough metal outside of the kickstart pivot hole. I guess with metal fatigue they will all fail eventually, if used.
If not concerned with absolute originality would it be possible to take off the chrome and weld a circular plate onto the outer face of the knuckle. This would beef up the area that breaks and spread the load over a wider area. When re-chromed it wouldn't appear much different to standard.
Sprocket:
--- Quote from: Gareth taysidedragon on December 11, 2019, 10:55:43 AM ---Since the 400 kickstart knuckles are getting harder to find and more expensive has anyone tried to repair a cracked or broken one?
There is a definite design fault on the knuckle, there is just not enough metal outside of the kickstart pivot hole. I guess with metal fatigue they will all fail eventually, if used.
If not concerned with absolute originality would it be possible to take off the chrome and weld a circular plate onto the outer face of the knuckle. This would beef up the area that breaks and spread the load over a wider area. When re-chromed it wouldn't appear much different to standard.
--- End quote ---
Wonder if I could get it done under warranty? ;)
Serious answer though, I completely agree. If a plate was welded over the open end you wouldn't need the cap either...
Nurse Julie:
This is all very intreaguing 🤔🤔🤔 Out of interest, how often do owners use the kick start on their bike? In 5 years, I have used it once due to a flat battery, started 1st kick, and again after the engine rebuild to get oil around the engine and. build up a bit of pressure before pushing the electric start button.
taysidedragon:
--- Quote from: Nurse Julie on December 11, 2019, 01:32:49 PM ---This is all very intreaguing 🤔🤔🤔 Out of interest, how often do owners use the kick start on their bike? In 5 years, I have used it once due to a flat battery, started 1st kick, and again after the engine rebuild to get oil around the engine and. build up a bit of pressure before pushing the electric start button.
--- End quote ---
I've never used mine to start the engine, just to prime the oil round the engine after rebuild like you. But, if I need to use it for real I don't want it to break!
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