• J3-Cub.com is the largest community of J3-Cub pilots, owners and enthusiasts. With over 1000 active members, we have fostered a vibrant community and extensive knowledge base. J3-Cub.com hosts a library of over 13 years of technical discussions, J3 data, tutorials, plane builds, guides, technical manuals and more. J3-Cub.com also hosts an extensive library of J3-Cub photos.

    Access to the J3-Cub.com community is by subscription only. Membership is only $49.99/year or $6.99/month to gain access to this community and extensive unmatched library of knowledge.

    Click Here to Become a Subscribing Member

Use of a Mc 7443 prop on a C-90

a3holerman

Well-Known Member
Joined
Apr 22, 2007
Messages
293
Reaction score
11
Hi,
I am finally finishing up my C-90 for my 46 Cub which has a 65 with a new Mc Cauley 7443 metal prop on it now. I was hoping to use this prop on the C-90. The prop is certified on a C-90 at a length of 73" or less but not certified on a J3. My thought was to have a prop shop take a half inch of each blade making it 73" and have my A/I do a 337. Does anyone know if this has been done before? I have got conflicting comments from the FAA won't approve anything anymore to it should be a simple field approval. Any thoughts or suggestions will be greatly appreciated.

Tom
Cape Cod
 

Latest posts

Top