Originally Posted by Cory (Post 748931)

I think it'd be best to have the water jet cut it like 0.010 under and then ream the hole.

Whenever we get waterjetted parts the holes are usually clearance holes or tap drill holes and their diameter is not critical. Our guy cuts them slightly undersize then we open them up with the correct size drill.

I know Pink just cuts them slightly undersized and then anything that needs a bearing in it gets opened up with a reamer in a hand drill. I'd never have guessed you could get away with using a hand drill, but it sure works for them.

Originally Posted by Aren_Hill (Post 749225)

any particular reason you couldn't just run a NBD setup in 1st gear? that'll get you a 47:1 reduction and would be faster and easier to make.
The only difference being orientation as the NBD setup would be longer and skinnier.


edit: nevermind just read the title this is for two... whoops, but you could just run two setups or 2fp's into one dewalt
http://www.chiefdelphi.com/media/photos/20145
http://www.chiefdelphi.com/media/photos/19245

Originally Posted by vivek16 (Post 749362)

...

That is a good idea. It would be much cheaper and lighter.

thanks, Vivek

Originally Posted by AdamHeard (Post 749364)

Made me realize a completely COTS solution to getting ~ 48:1 from two FPs.

Two FPs into AndyMark planetaries into a toughbox yields a 46.8~1 reduction.

I know it's not the lightest, but It requires no machining or work besides assembly (and the FP pinion).

Originally Posted by vivek16 (Post 760246)

EDIT: disregeard the messy desk behind the partially completed gearbox. :)