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Since My engine is "Plugs Up", I had to be a little more radial in moving the starter position. As you can see I added a plate with a hole cut in it for the starter along with a slot for one of the mounting holes (right hole) for adjusting the starter position. I then plugged the original hole as I needed its location for a motor mount bolt. But, basically simply cut a hole that will position the starter gears in close proximity to the flywheel teeth (but large enough for some movement of the starter) and then make one of your mounting holes a slot for adjustments as needed.

Ed A

----- Original Message -----

From: George Lendich

To: Rotary motors in aircraft

Sent: Monday, August 29, 2005 5:35 PM

Subject: [FlyRotary] Re: Side starter options

Al,

Your right on the money, everything you have said is true and slightly different for different starters. Tracy uses the manual starter as that is what Ross initially did and it's carried on from there.

For the Aussie Bellhousing I uses the Turbo starter but have made allowances for both.

The Subaru starter will also mesh with the Mazda ring gear.

The mounting holes are all different.

The starter snout hole doesn't need to totally surround the starter, so you can start from the edge, cut a bit and check for fit and then take out some more.

I liked the optional bolt hole mount, I didn't think of that. As long as it's held firm at the mount holes.

I tried to send a photo but it didn't work, it bounced because of the limits.

George ( down under)

I am going to copy your starter mounting system. It really makes since for me using a James cowl with the shark intake under the spinner. I need the starter moves from the bottom of the engine to the side. Do you have any words of wisdom as to how to determine the starter position to get the correct starter gear to ring gear mesh?

Dennis H.

All I can recall is doing a lot of very careful measurements. As you know, you need the engine shaft center to starter shaft center to be the same as it would be in the original position. Be careful because I seem to recall that I determined that either the starter shaft centerline is not in the center of the hole in the plate for the ‘nose’ of the starter housing, and/or that the center of the starter shaft is not exactly on a line connecting the two starter mounting bolts.

I measured everything as carefully as possible; then center-punched where the new hole in the plate needed to be, and had a machinist friend put in the hole. I drilled the new hole in the starter mounting flange myself. Things lined up very well. If need be, you can oversize the new mounting hole a bit so you can adjust the mesh before tightening down the bolts.

Good luck,

Al

Attachment: Front view of Adapter plate with engine mounts and starter plate.jpg

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