Joined: Feb 2012
Posts: 19,376
Likes: 5,517
From: Rochester, NY
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
No expert her with 20" tires but when I began to look at "24"' tires I contacted Georgena Terry and roughly followed her 81* castor angle designs (this was from Bill Boston IIRC). I might look at the Bike Friday designs as a start. Andy