• 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

Continental taper shaft hub (flange)


New Member
May 30, 2011
Reaction score
Classic Aero LLC 480-650-0883 has FAA approved drawings and data to produce those hubs for the tapered cranks.

They often crack at the key way, and from over-tightening of the center nut, or the bend in propeller contact with the ground or other hard objects.

They did a run of hubs in 1997, and are doing another group of hubs now (June 2011). These are approved and delivered pursuant to FAR 21.303b with release paperwork for your airplane installation.

Check with Doug or Donna, or visit www.luscombe.org where they list them.