Turning down crankshaft rpm

[yalipito]

For those who have a lathe and have turned down a crankshaft (clutch side). What rpm did you use? Thanks

 

[PAP]

Somewhere in the vicinity of 500 rpm. If it has a keyway, you'll need a tool that's rated for an interrupted cut, like brazed tip carbide.

 

[Sixpac440]

625 .. carbide insert.

 

[Phil1958]

For those who have a lathe and have turned down a crankshaft (clutch side). What rpm did you use? Thanks

make sure you use a live end and a dog. 350 rpm hss tool bit. but i would defer to these guys
i'm just a hack. that speed and tool worked ok.

how are you going to cut the keyway?

 

[yalipito]

how are you going to cut the keyway?
This will be done by a friend who has a lathe and a mill. Thanks for the info guys.

 

[KB2ROCKET]

here is one I did for a GX 390 I'm no machinist I'm just happy I didn't kill my self doing it .

 

[yalipito]

here is one I did for a GX 390 I'm no machinist I'm just happy I didn't kill my self doing it .

That looks darn good.

 

[KB2ROCKET]

Thanks it is just a tad bit small in diameter but may be able to be shimed the one thing I would do a little different is to make more of a radius at the root of the PTO .. for me this was a major ordeal next time I will pay a REAL machinist LOL :thumbsup: