Well, I thought things were going too smoothly.  Two days ago I received the anxiously awaited prop spacer and when fitting to the prop flange, it would not allow all the bolts to thread easily into the flange.  A few of the bolts treaded easily through the spacer into the flange.  The next bolt started to bind after a few turns were made.  The bolts and spacer were removed and the flange was gaged.  Sure enough, there was a spot where the flange was bent 15 thousandths.  Not knowing wether or not the crank shaft was bent or possibly cracked, I had no choice but to have it checked.  Since the C90 engine has 1400 hours, I decided to have a major overhaul done.  So, I’m guessing at least a 2 or three month delay in finishing my CH750.  There is still plenty to do and all should be finished by the time the engine returns.  Hopefully June will be the “magic month” !

Views: 126


You need to be a member of Zenith Aircraft Builders and Flyers to add comments!

Join Zenith Aircraft Builders and Flyers

Comment by Bill Bear on March 21, 2021 at 10:24pm

Thanks for the encouragement, Wayne.  Your advice is on target.  I think all I still need to do will occupy most of the time til the overhaul is complete.

Comment by Wayne Woloshin on March 21, 2021 at 7:00pm

Better to find out problem now than later, anyway lots to do and the time will fly by sooner than you think. Keep up the good work and don't rush it. 

Comment by Bill Bear on March 20, 2021 at 2:58pm

...oh yea....DAR inspection also.

Comment by Bill Bear on March 20, 2021 at 2:55pm

Install and rig flapeirons, set stops, install seats (upholstery is enroute from Zenith), determine unusable fuel, calibrate Belite fuel indicators, add two more access panels to top of wings, W&B, and run engine.  

Comment by Loren Warner on March 20, 2021 at 1:22pm

Sorry to hear this.  What more to do before flight?

New from Zenith:

Zenith Planes For Sale 

Classified listing for buying or selling your Zenith building or flying related stuff...

Custom Instrument Panels
for your Zenith

Custom instrument panels are now available directly from Zenith Aircraft Company exclusively for Zenith builders and owners. Pre-cut panel, Dynon and Garmin avionics, and more.

Custom Upholstery Kits for your Zenith Aircraft:

Zenith Vinyl Upholstery Kits

Zenith Apparel from EAA:

Zenair Floats

Flying On Your Own Wings:
A Complete Guide to Understanding Light Airplane Design, by Chris Heintz

Builder & Pilot Supplies:

How to videos from HomebuiltHELP.com

Developed specifically for Zenith builders (by a builder) these videos on DVD are a great help in building your own kit plane by providing practical hands-on construction information. Visit HomebuiltHelp.com for the latest DVD titles.

Aircraft Insurance:


West Coast USA:

Pro Builder Assistance:


Transition training:

Golden Eagle Aviation

Pianosa Flying Farm

Aircraft Spruce & Specialty for all your building and pilot supplies!

© 2021   Created by Zenith.Aero.   Powered by

Badges  |  Report an Issue  |  Terms of Service