Rannsachair
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- Lochgilphead, Argyll, Republic of Scotland
Hi folks,
Am scratching my head about this one:
I need to fit this pulley with a 19.9mm bore to a 19mm on a Honda 3.5hp engine.
Pulley/Clutch:
I removed the central section with the centrifugal clutch, its an aluminium alloy:
Material left at keyway:
the engine:
so the challenge is to create a 19mm bore into the 19.9mm bore.
My first thoughts were to bore out the 19.9 to 24mm then try to turn a 24 od 19 id sleeve, though when I cut out the area for the keyway how do I retain it?
Also the pulley needs to sit on a 22mm shoulder on the engine shaft:
I have a lathe and mills, though no means to broach an internal keyway, so am struggling to think how best to retain a sleave so that the body of the clutch does not slide past the shoulder? Perhaps drill and tap small holes in the sleeve and body and fit grub screws from the engine side?
It is just a favour for a friend, any thoughts on best approach?
Am scratching my head about this one:
I need to fit this pulley with a 19.9mm bore to a 19mm on a Honda 3.5hp engine.
Pulley/Clutch:
I removed the central section with the centrifugal clutch, its an aluminium alloy:
Material left at keyway:
the engine:
so the challenge is to create a 19mm bore into the 19.9mm bore.
My first thoughts were to bore out the 19.9 to 24mm then try to turn a 24 od 19 id sleeve, though when I cut out the area for the keyway how do I retain it?
Also the pulley needs to sit on a 22mm shoulder on the engine shaft:
I have a lathe and mills, though no means to broach an internal keyway, so am struggling to think how best to retain a sleave so that the body of the clutch does not slide past the shoulder? Perhaps drill and tap small holes in the sleeve and body and fit grub screws from the engine side?
It is just a favour for a friend, any thoughts on best approach?