Neat work Jethro!!
Blake - make sure that the 15.5" wheel clears the side of the cockpit - with your hand - it would be v close to catching and that would make for difficult driving.
That was my thought too - but Blake said that his Mike Lempert wheel was already 15.5 so I guess he knows he can manage.
I already have the issue with my "standard" 14" (I guess?) Brooklands.
Any more hints on this mysterious creation Blake?