Mk IV engine mount for Rotax 912

[Jeromef 76]

Hello all

My hangar neighbor bought a new  912 engine  mount from Avid Kitplanes about one year ago.

Today we tried to install the motor, however this was not possible because the parts had wrong dimensions. In particular the center distances on the rods did not match those on the motor, with an error up to 2mm!

Did someone have a so bad experience with those parts before? What are the possible solutions? Avid Kitplanes does no more answer to mails for a while.

[wypaul 448]

The problem is Rotax changed the mount points on the newer engines gearbox. I had the same issue when I upgraded to a new 912ULS.  I simply enlarged the holes so that they would fit.  600 hours no issues. On my friends new engine we egged the holes as described and then welded the hole to make it round this was about a year before I did mine.  Get a burr in a dye grinder grind the hole oval so you can bolt it up and go fly or fill the rear part of the hole by welding if it makes you fell better.