cinder cone rear tyre clearance issues

[winking weasel]

hi all, im having an issue with a 91 cinder cone rear tyre clearance. i had some 2.1 kendas kicking around and popped them on and didnt think twice untill putting them in the frame and the wheel only just rotated so then i tried a 1.95 cheapy tyre and its still pretty damn close. a slight buckle and it will rub. i have built many bikes and never came across this. is it normal???thanks in advance

 

[bryan555]

Yeah, remember nine being pretty tight. Tyre widths vary, you can't go by the number on the side. A narrower rim might help. A 1.95 ground control used to fit ok.

 

[winking weasel]

cheers il give them a try on the original rim and see how it goes.

 

[Splatter Paint]

Yep, just built up a 1990 model with a 2.1" tyre and it rubs. time for a 1.95".

SP

 

[rc200ti]

Yep. I think the original spec was 2.1 equilibrium up front and 1.9 propulsion at the rear, it may have been 2.0, but it was quickly changed to a 1.9 Smoke as the propulsion was crap in Midlands mud. Its been 1.9 ever since.

 

[winking weasel]

yeah i checked the original spec and it was a 2.0. cheers for the help