Wednesday, March 24, 2021

Prop Hub/Spacer/Spinner

Monday, I took the Saber Manufacturing spacer and the NR prop hub to a machinist to have the center hole on the NR Prop hub opened up to match the flange on the spacer. I picked it up Tuesday afternoon and wanted to temporarily install it bit first I needed to install the lugs into the engine flange. To install the lugs I couldn't press them in as the flange was already mounted on the engine. So, I used a large impact socket, a long bolt with a thick washer, and my impact gun to pull the lugs into place. Once all six lugs were installed, I set the spacer in place to verify fit. All good.

This morning I went to install the backing plate for the spinner and realized it too would not fit. So I set about drilling out the spinner plate with my large step drill. Being much thinner metal I chose to do this myself. After some minor filing, the backing plate slid into position just fine.

Then I put the prop hub in place.

Then I test fitted the spinner. This required me to ream out all the screw holes. Once complete I set the spinner in place and hand screwed it on. Looks pretty good.

The next step was to measure for the engine flange to spacer bolts, and the spacer to prop hub bolts. I'll be ordering those tomorrow. I will also test fit the prop.