01-04-2021, 09:28 AM
Hi Mark and Alan
Thanks for the input. According to Tony Betts it seems that most 3 speed boxes have 7 teeth speedo spindle gears. I need to check that I have counted the teeth correctly before getting a replacement.
Alan.... I found that it wasn’t the speed that concerned me but the change in the odometer reading. I found it was reading about 0.8 of the true distance. Having just rebuilt the box I think I could remove and replace the back plate (yes it does involve removing the 3rd motion shaft) but as this is almost the last operation you do when assembling the box you should be able to do it in situ.
However I did a 12 mile run with the mismatched speedo drive gears and everything seems to run smoothly. I may just chance it
.
Cheers
Howard
Thanks for the input. According to Tony Betts it seems that most 3 speed boxes have 7 teeth speedo spindle gears. I need to check that I have counted the teeth correctly before getting a replacement.
Alan.... I found that it wasn’t the speed that concerned me but the change in the odometer reading. I found it was reading about 0.8 of the true distance. Having just rebuilt the box I think I could remove and replace the back plate (yes it does involve removing the 3rd motion shaft) but as this is almost the last operation you do when assembling the box you should be able to do it in situ.
However I did a 12 mile run with the mismatched speedo drive gears and everything seems to run smoothly. I may just chance it
. Cheers
Howard