What acted as an oil seal - was there a shaft seal? It has been said many times that the only way to weaken a type 4 is to stroke the crank and that the 66mm was industructable. Perhaps my engine is proof.
Yes Steven, in fact there was an oil seal which fit around the hub and sealed the space between the hub and the case. It sits in the case in much the same way as the Force One bearing. It makes me think that this hub was ment to be a hub and bearing all in one. Except instead of the bearing being allowed to accept the ware, the case is sacrificed. Perhaps the builder felt that the #3 main bearing was suffient and he did not feel that the shaft would ever flex enough to need the #4 for support. I wonder what would have happened at the aircrafts designed G load of +6 or -4. Orma L. Robbins Southfield MI 19 Years flying KR-2 N110LR http://www.aviation-mechanics.com
