SDS CPI-2 Arrival | 1.29.2021

Our SDS CPI-2 arrived today! We had debated installing an electronic ignition now vs. keeping the magneto that was installed and installing the EI later, but I realized that I'd much rather do the work now than have to retrofit. We may add a second one later, but for now, we're only replacing the left (starting) magneto. Gets 95% of the benefits, plus I have diverse redundancy with the mag.

Unboxed and inventoried everything. First impressions: these parts are gorgeous. Fit and finish is 10/10.

Just look at that beautiful anodized billet aluminum. I'm a sucker for well machined parts.

 

Started to install it. Removed the left mag. Removed the left mag adapter/extension. Removed the studs and ordered the standard length ones.

Mag removed with extra long studs showing.

 

Also removed the prop extension and stater ring gear (again...). Started to mount the crank sensor, but realized that I have the wrong starter ring gear. The starter ring gears come in two alternator pulley configurations (molded into the part); one is a smaller diameter than the other. The SDS requires the larger diameter, I have the smaller. Purchased a gently used starter ring gear (flywheel) off ebay. I should be able to sell mine for roughly the same price, so it should end up as more or less a wash.

Figured I could complete the sensor install as much as possible. Removed and flipped the front case bolts one at a time (they were installed left to right rather than right to left), reinstalling with the SDS special nuts. These special nuts are where the crank sensor will mount.

Top bolt flipped and nut replaced. Torqued to Lycoming spec.

Both nuts installed.

I also installed the control box on the firewall and replaced the top spark plugs with the new automotive plugs.

That's all for now!
- Jeff