bike-maker
Full Access Member
In various Cummins conversions, I've sen a few different ideas that worked for using a IDI tach sensor;
One guy bolted a 54 tooth saw blade on the front of his harmonic damper.
Another used a hacksaw and carefully laid out and cut 53 saw blade width channels around the circumference of the damper.
A 53 tooth sprocket off of the rear wheel of a dirt bike would work also.
I'm thinking of just cutting 53 slots in one of the pulleys.
The DT's have a ginormous damper, with 3 V-belt pulleys built in to the back side of it. The backside of the rear pulley (closest to the block) has timing marks on it; there's lots of room left over to cut some grooves somewhere else on that thing.
One guy bolted a 54 tooth saw blade on the front of his harmonic damper.
Another used a hacksaw and carefully laid out and cut 53 saw blade width channels around the circumference of the damper.
A 53 tooth sprocket off of the rear wheel of a dirt bike would work also.
I'm thinking of just cutting 53 slots in one of the pulleys.
The DT's have a ginormous damper, with 3 V-belt pulleys built in to the back side of it. The backside of the rear pulley (closest to the block) has timing marks on it; there's lots of room left over to cut some grooves somewhere else on that thing.