OK...so I finally got the Ibis Mountain Trials frame I've always covetted...albeit a little rusty and in need of some re-finish work (I'll update my blog with pics as soon as I can)... meanwhile, it appears as though the frame has a coupe of issues regarding seatpost size (I think it was heated to dislodge a jammed post) and was hoping someone knows the stock seatpost size...and the bottle braze-on bolts are rusted in place...sounds like a job for a dremel...
Also, it has front and rear u-brakes and horizontal Shimano SIS dropouts with threaded backs to adjust axle placement (a-la vintage road bike)...and I think the serial number is either 26 or 126...any idea of what year range I'e dealing with? It has to be at least 87 because it ahs u-brakes and has no brake boosters on the (or allowance for them) so I'm thinking it can't be any later than 89...
Either way, I'm stoked!
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Thread: Dating old Ibis