Changing out a 912 80 HP in a model IV

[Wheels]

I appreciate the help. You are all awesome. I called Warp Drive and those guys have my loyalty hands down on service. Daryl spent some time on the phone with me this week and I did buy a carbon fiber spinner and back plate assembly from him. He said it was unlikely that I will need to balance the unit I am buying as it is a well designed and tested spinner. The color will match my plane and I can install and fly rather than continue the game of drilling balancing, hoping, testing, etc. Tell me no one saw this problem coming and just ignored it. Pretty much the way I feel about the last 17 minor adjustments for fitting the engine. I have not enjoyed the ride and I will NEVER build a plane. Hoping for successful engine start on Friday of next week, but I have been saying that for quite some time now. Cheers

[cap01]

i found the service information released by kodiak research dated november 1994.
the very short story is that from september 1994 on the 912 ul starting with sn
4153100 will have version 2 propshaft with 13mm collar nuts

[Wheels]

Super, I don't know why I didn't look for that

[cap01]

heres a link to bolt pattern standardization service info
https://legacy.rotaxowner.com/si_tb_...nfo/4kul94.pdf

[Wheels]

The engine first start went according to plan. Dead battery had to be charged. After three attempts had to be charged again, new battery has been purchased. Start went off with good results but the Dynon DS 10 has many configurable screens. After replacing the supplied oil pressure sender with a Kavlico sender, the problem of oil pressure sender communication was partially solved.
The Dynon must be configured for your engine and the individual screens for RPM and pressure have been manually input. I think I may fly tomorrow.
Of course the nose cone didn't fit. That would have been too easy. Im looking for something that will fit a rotax powered round cowl. Not as easy as I thought.

The mech stuck around for the engine run and signed off the plane. The pneumatic balance and blade pitch are on me.
Not a problem. If things continue as they have been, there should be a major weather system or an earthquake that destroys my runway. I cant wait.

[mr bill]

We know the feeling

[Wheels]

I walked into the hangar and looked at my project sitting in the dim light of overhead flood lighting. There were tools and empty oil bottles around her feet. She sat there without her cowlings and two empty mouse traps on sentry.
The extra parts, the ill fitting nose cone, and the little drip of oil below the left corner of the heat blanket was just the icing on the cake. I shut off the lights, started up my tractor and started moving dirt. The little plane will have to wait until I feel like it. Im pretty tired of the process. Not one single aspect has gone according to plan. I"m too close to quit and I'm too Peeved to continue. I have 300 acres of hay to get in, and frankly, I would rather do that right now.

Dynon called back with an answer to the tachometer problem. The set up screen in the installation manual calls for several options. Deciding which one will require an optical tachometer to satisfy me that I'm seeing what is being reported.
190.00 sound reasonable for an answer? Welcome to aviation 101.