Sweet! Time to start saving up 
Has any of you tried a real 20" wheelset (406mm) in the Impact Gravity frame ?
I am currently running a trial wheelset (19" / 387mm) with an Impact 19x2.5 tire. In theory, a real 20" wheelset would be 9.5mm higher in the frame (e.g. with a Qu-ax cross tire). I measured with my fingers a clearance of about 11mm (without cutting the extra next under the crown).
It seems close but working, hence my question to see how it goes IRL 
I am sure that it would work fine with a slick tire. But I don’t want to jump from one narrow tire selection to another just because of my frame 
20 inch wheel in gravity frame
i do this
i have a impact gravity.
i was trying to use this for uni hockey as well as trials. riding that around i was getting killed with 140mm groovey cranks biting chunks out of my ankles. plus i was slow
ive built a second wheel with the onza pro diamond (front) 20 inch rim. and maxis grifter tyre.
absolutely no clearence problems
loads of space.
and much faster and smoother for.hockey
still love my gravity
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