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Re: singer le mans gearbox

Posted: Fri Oct 16, 2015 9:06 pm
by DarcyG
Hi Peter, any luck getting a measurement on the pin? Thanks, if not I will try the above.

Re: singer le mans gearbox

Posted: Fri Oct 16, 2015 10:08 pm
by Peter McKercher
Sorry Darcy. I've been out of town for a week. I should be able to get the measurements for you this week end.

Re: singer le mans gearbox

Posted: Sat Oct 17, 2015 1:23 pm
by Peter McKercher
Darcy

Here is a photo of the springs and ball bearings for the interlock mechanism. The ball bearings are 3/8" diameter. The springs are 3/8" by 1-9/16" long. I couldn't extract the pin without further dismantling, but have made some enquiries about it and will get back to you if I can get further info.
interlock_mechanism.jpg
interlock_mechanism.jpg (254.59 KiB) Viewed 1111 times

Re: singer le mans gearbox

Posted: Sat Oct 17, 2015 4:26 pm
by Peter McKercher
Darcy,

Here is a picture of the whole assembly courtesy of Martyn Wray. This should help.

The selector shafts have to be withdrawn to reveal the balls and pin. (NB; The shaft orientation
in the photo is not quite correct as the hole in the centre selector for
the pin should be horizontal). Martyn says the pin is approx. 3/8 inch (from memory).
BGX Selectors.JPG

Re: singer le mans gearbox

Posted: Mon Oct 19, 2015 3:33 am
by DarcyG
Thank you, the detail is great. The 3/8 is pretty close to other measurement if you allow for possible wear.

It has been a good day as I just collected a set of front seat backs to either use or us as a pattern. I just need to check the height Etc when I get back home. An earlier article I read said go for at least 20 inch backs heights.