Originally Posted by
stevegor
One problem I forsee with a MTB R20 is the quality of the 20" suspension fork, most are from inferior "kids"
If you go with disk brakes on the front then you can get a mid-range 26" fork and fit any wheel up to that size - so maybe do your 24" wheelset, remove a bit of lower headtube and you're away. What about a cool Cannondale lefty fork?

[edit - darnit - that would require a 1 1/8" headtube. Pfft.]
Originally Posted by
stevegor
Another problem I could see is the hinge and/or the bolt on the folding frame might not be strong enough for the MTBing that I normally do, so I would suggest using the non folding version frame instead.
There must be ways of upgrading the bolts though eh? If it's a non-folder it kinda misses the point and might as well be a normal compact hardtail.