Some of Garry's cranks are not tapered but straight , still keyed though . The tapered collet would go on the crank first then the key then the tapered keyed hub or prop flange as it may be called. This design I have found mostly on the blue cased engines 3.2 and 6.4 twin . Now that I think about it I think there also a version where the collet is also keyed where the key goes in first then the collet slides over then the hub goes on . One of the versions the key actually protrudes from the face of the hub by about .020 ".
All of Garry Allisons (Brison) engines are excellent engines by all standards . The power to weight is very good , not the best but still very good . The quality is vastly superior to even DA or 3w . You will never , literally never wear one out . You may break it in a hard crash or damage it from no oil in the mix but I have never seen one wear out from even the highest level of usage .
Last edited by CK1; 02-23-2019 at 11:46 AM.