David Clement
Member
OP
What I have done for a similar situation as add a sprocket in the shaft with a chain going to a sprocket 1/4 the size. Watch the teeth on the smaller sprocket and you have 4 times the resolution. If you need higher then change the ratio of the 2 sprockets. If the chain is taught there won't be any play or slack in the reading.
Even mounting a finer pitch gear or sprocket to the shaft will work also.
To over-engineer it add a resolver on the shaft and you will precisely know the speed.
Yes. This would be the ideal solution but would require a mechanic. I may eventually go this route depending on time and mechanic availability.
Thanks
David