How to fix cross threaded magic pie axle. What thread pitch?

[brumbrum]

Late last night after building my pie into a heavy duty mavic rim, sorting out the usual rear wheel fitment problems and making a torque arm and getting everything to fit nicely i threaded the bolts back on to the axle and one axle and bolt stripped/cross threaded. Whats the best way to fix? And does anyone know the the thread pitch of the bolt and axle.

Thanks
Andrew

 

[dogman dan]

If you have a good nut left from the other side, a good hardware store can tell you what pitch it is.

If you really bunged it up, you might have to go with a different, slightly smaller size. Basicly, remove old threads, start new with whatever fits on what's left of your axle diameter.

 

[shock]

How far did you mar the threads? You may be able to cut off 1/4" or so of axle to get back to good threads.

 

[wesnewell]

GM 901 axles are 14mm x 1.5. Not sure about MP axle, but I'd guess the same. Verify first.
http://www.amazon.com/14mm-Carbon-Steel-Hex-Rethreading/dp/B000P4DNR8

 

[brumbrum]

Thanks for the help. I have had a look today with fresh eyes and in a sober state I have saved the axle thread by using a thin file to clean and sharpen a flattened single thread. It is now ok. It is the nut which is stripped so not as bad as seen at 1.30am after a number of strong ciders :lol:

The nut size is 14mm but i am not sure of thread pitch.

Thanks for all the comments.

If anyone knows for sure please let me know. Otherwise i will try and get a local workshop to look at the working nut.

 

[dogman dan]

Get a new nut for sure. Once you know the size, lug nuts have more depth for more threads engaging the axle threads.

When all else fails, pinching torque arms.

 

[teklektik]

Once you know the size, lug nuts have more depth for more threads engaging the axle threads.

More on axle nut threading here.
Also - a very good post on repairing stripped axle threads using a thread insert and larger M20 nut.

 

[brumbrum]

Thanks all again, the thread pitch is 1.5mm . I measured 10 protruding thread rings and they took up 15mm in length. I also bought some 1.25mm pitch threads and they didn't fit... Lol