Questions on 70-71 Tach/Clock reset stem
 

I am working with a 70 tach/clock assembly for my Formula. Unfortunately the clock reset stem is missing the threaded end, There is just a partial, single thread at the end.. Not sure if someone ground the stem off or what.. The clock came out of a single wire tach, so I believe this would have used the early black "flower" reset knob/keeper.

The questions I have:

Is the thread for the flower knob different than the thread on the later, silver knob/keeper? If so, what is the thread?

What is the overall length of the reset stem?

How long/deep is the threaded end that the knob keeper screws on to?

Thanks in advance.

This might be helpful


https://forums.maxperformanceinc.com...errerid=134156

I think I asked your same question.

Fwiw I think the threads are the same and the 70 clock has a shorter stem. I have not been able to confirm though.

Paul K, thank you for the reference to the other posts.. I should be able to measure mine from the clock face. Also, I have the face plate off on mine, so I can get a measurement from the end of the shaft.

Paul K, regarding your pic of the set stem with the full round threads, could you measure how deep the threaded portion is on that stem?

Thanks much!

It should have a threaded flower end as clock kbob and should be black

It took a while to find the clock. The threaded part of the shaft measures approximately measures .195.

Thanks Paul..

I am going to see about having a stem made.. I appreciate the info..

You're welcome. Good luck!