Having done this and donated the bikes (twice last year) to clear out some parts and space I found out this is going to be tougher than I thought. I discovered the only tires I have on hand are 700c so I first had to give up on the original 27 1/4 wheels and convert. As you can see I got that. But the other pic shows what is going to make for some tough riding on gravel roads. 23c Bontrager slicks!