Project: wlawrence     -     Entry

May 29, 2023 Still with the ignition Category: Ignition
At home, glued the trigger and synch magnets into the shaft collar. Fabricated firewall pass through grommets (per Tony Bingelis) for the manifold pressure sense hose and the new electrical connections between the coil pack and the controller.

The "orbit" of the "flying magnets" was too close to the surface of the prop hub, so I clearanced the sensor mount so that it would clear.

I emailed Ross Farnam of SDS bout how to tap into the intake manifold to sense manifold pressure. On a built, installed, tightly cowled engine, it's HARD. See the sketch. Ross says the tap should be on the plenum before the runners split, else you get a sine wave(s) from the intake pulse of each cylinder. We'll see if that's possible, the join is buried pretty deep. I might be able to drill with a right angle drill, but can I get the riv-nut tool in there? ID of the MAP sensor hose is about .1".


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