MY thread size

Cliff R · Post by **Cliff R** » Wed Oct 14, 2015 8:00 pm

Anyone know the thread size/form and TPI for the front drive shaft for an MY/Brumby.
I have a spare front drive shaft I want to rebuild but the drive shaft thread is damaged on the end where I suspect someone has hit it with a hammer to get it out of the bearing assembly.

Silverbullet · Post by **Silverbullet** » Wed Oct 14, 2015 9:12 pm

Don't know the thread size myself, but I'm willing to bet it's a metric fine thread. Is yours mushroomed over on the end? Depending on how bad it is you can put a chamfer around the end with a grinder or some such until the deformed bit is gone. Can't take off too much though.

Cliff R · Post by **Cliff R** » Thu Oct 15, 2015 7:05 pm

Silverbullet wrote:Don't know the thread size myself, but I'm willing to bet it's a metric fine thread. Is yours mushroomed over on the end? Depending on how bad it is you can put a chamfer around the end with a grinder or some such until the deformed bit is gone. Can't take off too much though.

Thanks for the info.
Yes, it would definitely be metric, I may have to get off my lazy butt, pull out the metric thread gauge, work it out and grab the metric thread file.
Only the first 1 or 2 threads are damaged, not too bad in all, just enough so the nut wont start and if I try I will only bind the nut and shaft threads together stuffing things more. Think I will try to reform the threads with the thread file first and then go to chamfering as a last resort

Post by **Bantum** » Fri Oct 16, 2015 3:42 am

You'll want a M24 x 1.5 Die : ( Right handed thread )

Edit : Lefty - Loosens & Righty - Tightens

Clean up with one of these :

( another handy tool to add to the workshop )

Cheers, Bantum ...

Silverbullet · Post by **Silverbullet** » Fri Oct 16, 2015 8:59 am

That is some useful info there Bantum, nice find

Cliff R · Post by **Cliff R** » Fri Oct 16, 2015 8:30 pm

Awesome, thanks for the info

mattw · Post by **mattw** » Fri Oct 16, 2015 9:30 pm

I live and breath technical drawings in my day job. I really miss not having a full data pack on my car. Nice one, and where's the rest.....

The problem he'll have with that die is starting it on the thread, as with a nut. Not that I have a better solution.

steptoe · Post by **steptoe** » Fri Oct 16, 2015 9:50 pm

i hate think of price of that die, if $99 is the guide given for m10 1.0 a month ago for brake line threads

Cliff R · Post by **Cliff R** » Sun Oct 18, 2015 12:53 pm

I see a die is available from China on ebay for $29.50 with free postage.
Guessing they wont be the best quality but for cleaning up purposes they are probably OK.

NachaLuva · Post by **NachaLuva** » Tue Oct 20, 2015 11:17 am

Most of my dies/taps are cheapies, you just have to use them properly...forward 1/4 turn then back, forward 1/4 turn then back...

Cliff R · Post by **Cliff R** » Tue Oct 20, 2015 8:36 pm

NachaLuva wrote:Most of my dies/taps are cheapies, you just have to use them properly...forward 1/4 turn then back, forward 1/4 turn then back...

Don't forget cutting compound, makes a huge difference.

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MY thread size

MY thread size

Thread cleaner ...