Notch transverse bulkheads for engine mount | 11.24.2020

After talking with Scott from Velocity, he stated that he sees issues with the transverse bulkhead placement occasionally, and that it would be no issue for me to cut recesses for where the nut needs to sit. He said he's even seen planes without the transverse bulkheads at all (*what*) so it won't cause issues.

With that, we drilled the holes for the bottom two mount bolts and then I notched out the bulkhead as needed to fit the nut and a smaller washer. Note that the mount will only ever push from the firewall side here, so the large washer isn't needed, unlike the top mount holes, where the weight of the engine is pulling on the firewall when on the ground.

Here's where the drill bit punched through on one side.

And here's a cleaned up notch for the nut.

I started with an undersized drill bit to make an initial circle/hole, and then used a dremel with a flexible extension on it with what amounts to an "end mill" type bit to mill out an even hole and spot for the washer. These bolts will get mounted opposite the top bolts and the nut will sit in this recess.

I also took the autopilot servo out of the rear, since the adhesive had cured. These will get 2 plies BID over them to help hold them down even more.

Thanks for reading!

- Jeff