Engineers Assemble!

Can it be spot welded in place and the bolts removed?

This would be my solution, 2 birds with one stone. Mount motor on 10mm plate which would act as spacer, with existing bolts, then where bolt heads are enlarge existing holes in original mounting plate. Heads would be flush with original plate mount, no need to countersink holes. As said by foz above bolt new plate to original plate with bolts moved out of way of belt.
Unless there's something I've not thought of, very likely , this moves drive pulley in 10mm and bolt heads on motor are out of way, belt doesn't need to move in relation to motor.

One final thought: is it possible to rotate the motor mounting angle to change the orientation of the bolts so that one (or better still two) is inside the loop of the belt and therefore not likely to touch the side of the belt?

I use a countersink tool at work for this very reason with a DeWalt and its perfectly ok (the fact that I'm destroying £100k to £500k of vehicle never far away)

You could also try a hand tool if you're nervous

https://uk.rs-online.com/web/p/counters ... s_Whoop+(2)-_-456905&matchtype=&pla-308941987350&gclid=CjwKCAjw0On8BRAgEiwAincsHHrqMQ8hmQi7bilU846pumEw7T8mbaetTze1B9hwgS__YJK9yfvdWBoCIGoQAvD_BwE&gclsrc=aw.ds

...or forget belt drive altogether, and go on a thinner chain drive?

You could probably find some S/H fixed sprockets in the Road section

Are you in Bournemouth?

Don’t mention Bournemouth.


I mentioned it once but I think I got away with it.

LGF has been there occasionally....

Low profile Allen will give you a head height of 7mm compared to the std 12mm ht

Only asked because iam here , found a 25mm counter sink and have a small milling machine at home any help ?