K2F magneto shaft thread size

APRRSV · Jul 7, 2017

Does anyone know the what size and thread type the end of the shaft of this magneto is? I'm talking about the end that the AA unit bolts to.
Can anyone confirm that it is 3/8-20 BSF?
Thanks,
Ed

texasSlick · Jul 7, 2017

Without actually measuring my K2F, I am 99% sure it is 3/8 BSF.

Slick

Rohan · Jul 7, 2017

And actually measuring it, it is 3/8" BSF....

APRRSV · Jul 7, 2017

Thank you Slick. I measured 3/8-20 but wasn't sure of thread form. Is there another thread form that is 3/8-20?

Ed

Rohan · Jul 7, 2017

If it looks like BSF, measures like BSF, smells like BSF, and a BSF bolt fits it like a glove....
Why ye ask ?

There is almost always strange reasons why folks start delving into these things....

APRRSV · Jul 7, 2017

Thank you Rohan,
I didn't see your reply. I needed to be sure cause I need to order a die to chase threads.

Ed

texasSlick · Jul 7, 2017

APRRSV said:
Thank you Rohan,
I didn't see your reply. I needed to be sure cause I need to order a die to chase threads.

Ed

Best source I have found for Brit taps, dies, and fasteners .... fast shipping and reasonable ship cost, no minimums, etc

http://britishfasteners.com/index.php/d ... -dies.html

Slick

Rohan · Jul 7, 2017

Unless its really damaged, a triangular file will often clean up a burr mark or 2, or the starter thread. (?)

Triton Thrasher · Jul 8, 2017

Rohan said:
Unless its really damaged, a triangular file will often clean up a burr mark or 2, or the starter thread. (?)

Or, a thread file has less potential to damage the threads than a die.

APRRSV · Jul 8, 2017

Thanks Slick. I've ordered from them in the past. They are good.

Thanks Rohan and Thrasher. I'll give it a try with a file first.

Ed

APRRSV · Jul 13, 2017

A little persuasion with a file did the trick. Thanks to all who replied.

Ed