Tap and Die help on axle shafts
 

Is it possible to extend the threads on the axles (front and back). I have -5mm rims on a project right now, and the shafts stick way out. I would like to trim them, and re-die the shafts so the thread extends further in to the axle shaft. Can you die over existing threads to extend a thread?

I don't have any die experience, only tapping.. I also need advice on how to trim the shaft without killing the threads, or at least how to trim and keep the threads usable.

I believe the scx-10 axle shaft thread is M4 x .7 pitch, but I would like someone to chime in and confirm.

Photo courtesy of SDI International,

http://i188.photobucket.com/albums/z...xialingles.jpg

Im no machinist, nor have I dealt with any shaft threading..... but I would assume as long as the non-threaded portion of the shaft is the appropriate diameter ot should not be an issue. Also as long as the die is placed correctly it should only clean the existing threads not damage them. If you get this far you could then trim the shaft to the length you want before removing the die

Sent from an SG3-Mini

Re: Tap and Die help on axle shafts
 

before removing the die, that's a great idea. then it would back-thread the rough spot. I hadn't thought of this.

Re: Tap and Die help on axle shafts
 

Yes you can pass the die over the threaded section to add more threads, and as stated above as long as the shaft is the correct diameter for the thread you don't need to do anything else to prep it.

As far as saving the thread when you cut them off the easiest way is to thread a nut on past the point you're going to cut off. Then cut the shaft. When you remove the nut it will straighten any remove any little burrs off the end. You can also use the die itself but that can also cause premature wear on it.

The right way would be to buy a tool called thread chaser, it is basically a square rod that has different thead pitchs machined into the sides of it and you run it along the area you cut to clean up the threads and remove burrs. Most quality tool company's make them and can be purchased as most machine tool shops

--Dan