Any suggestions by any who are using them, actual applications Hi Colin I have flown a type 4 with a Diehl case and understand your delima. I am currently using a VolksPower case which is no longer in production. Because I like the starter, I seriously considered modifying the Diehl case to accept a pulley and belt. I discussed this with a machine shop and another extremely skillful person and they agreed that it was fairly easy to do. But, before I make this suggestion to you, I must admit that I opted to modify my VolksPower case to accept the same starter as the Diehl case. So, Here Go's.....First of all gut the Diehl case, and rework the flywheel(you might have to replace the flywheel) moving it fwd to allow a V belt to pass. Replace the mag drive puck with one that has a pulley V cut in it or modify the current Mag drive puck to accept a V belt. My mag drive puck is solid Alum, screws into the back of the crank and is driven by five pins which are moved by the heads of the five internal wrenching flywheel attach bolts. Open the side of the case to allow the belt to exit, at what ever position you have the room to install an alternator. Attach to the outside of the back of the case a contour fit doubler, which can be attached by welding or by bolting through the case. This doubler willl support the bracket on which the alternator would be mounted. The hard part is that the starter mount must be thinned on the outside to allow the starter to reach the ring gear which is relocated forward. If it becomes too thin a doubler could be added to the inside. I think that this will work, without a lot of difficult re-engineering. I currently use a 75 Honda Civic Nipendenso Alternator of 35 Amps. I'm sure that almost any alternator could be used. I control mine with an older style ford regulator. I have a switch and light in the cockpit which functions the same as the idiot light in the car. With the Ignition on and the engine off, the light is red. with the engine running, the light is off. If the alternator fails, the light will come on.
Hope this helps Orma Southfield, MI N110LR 20years old in August Replacement engine going together