18-07-2018, 01:42 PM
Dave,
Thanks for your reply, a tremendous amount of information on the Speedex site.
I have now sorted the spare 4 speed synchro box, the worm drive is fitted but it is only a single start thread. The 8 tooth pinion meshes well with the worm, the 9 tooth pinion does not mesh so well.
I notice in the Speedex formulas the numbers are divided by either 8 or 9 so that Is obviously the pinion teeth value. I will use the 8 tooth pinion as a starting point.
My reasons for swapping boxes was first gear jumping out also difficult to engage, the spare box felt better when selecting gears on the bench, it also had the worm wheel fitted to start with, it just needed a good clean but was in good condition.
I was wrong, all the boxes I have are 4 speed, one has an”S” as you suggested.The other does not.
Thank you again for your help
Roger
Thanks for your reply, a tremendous amount of information on the Speedex site.
I have now sorted the spare 4 speed synchro box, the worm drive is fitted but it is only a single start thread. The 8 tooth pinion meshes well with the worm, the 9 tooth pinion does not mesh so well.
I notice in the Speedex formulas the numbers are divided by either 8 or 9 so that Is obviously the pinion teeth value. I will use the 8 tooth pinion as a starting point.
My reasons for swapping boxes was first gear jumping out also difficult to engage, the spare box felt better when selecting gears on the bench, it also had the worm wheel fitted to start with, it just needed a good clean but was in good condition.
I was wrong, all the boxes I have are 4 speed, one has an”S” as you suggested.The other does not.
Thank you again for your help
Roger
Location:- Haverfordwest, Pembrokeshire.