Mag Timing Laser

[GalinHdz]

Originally Posted by Mike S

There is a hole in the nose of the starter, takes a piece of 1/8 round stock-----such as a drill bit, or at least a piece of one.

It will become a pointer for a second set of alignment marks on the front of the flywheel, which are correctly offset so they match the starter location at the same time the case split matches the alignment marks on the rear of the flywheel.

Try it, you might like it.

Here is a photo Google found for me.

Been there, done that but still looking for the laser timing light.

[walkman]

They seem to be the answer for everything these days. As is said "There's an app for that".

I timed my mag using both the traditional flower pot method and using an iphone inclinometer app and a similar android app. I simply taped the phone to the prop hub with enough duct tape to ensure it wasn't moving.

I first found tdc and zeroed the app. then backed the prop until I had the necessary 25 btdc. sanity checked that against the timing mark on the starter and it was dead nuts.

then set the mag.

then rotated the engine through and used the buzz box against the app to verify the timing to within .1 of a degree.

just for grins then had a local magneto expert use his traditional flower pot. Best he could get was +- 1.5 degrees.

[Vac]

Paul,

I drilled an appropriately positioned hole in the baffle to allow the laser to shoot through. I fill it with a screw and self-locking nut when not in use.

Cheers,

Vac

[Toobuilder]

I use a laser level. One that projects a straight line on a wall, floor or whatever. Place it on the boot cowl pointing forward and line up the split line in the case. The line will project forward to the ring gear, prop and hangar door....

Works great, and you probably have one in your toolbox already.

[Sam Buchanan]

I made a pointer out of scrap 0.025" and attached it to the front baffle. Crankshaft TDC was carefully set and the pointer bent/adjusted so it was at the TDC mark on the flywheel. Been using the pointer for several years....works great. I'll recheck it every other condition inspection or so to make sure it is still valid.