My wife had her triathlon 160 in a J2. It wasn't loose by any means. Another customer has a Sabre 170 in a J3. It appears that there are Oddessy versions that might hold it but I don't think the original J1 would hold a 170 appropriately. You might close it but I doubt it would be pretty.
(This post was edited by councilman24 on Jun 20, 2007, 7:16 PM)