Originally Posted by
Tom Bombadil
I have not yet completely ruled out going with the Gunnar Sport frame. Would use the same build package as I'm working on now. Maybe even go 650C wheels, if they feel there is enough clearance for a crankset with 165mm or 170mm cranks. But 700 would work. I would need to change out the fork for one that has a shorter axle to crown distance...The Sport 540 (54cm) frame has acceptable measurements for me, especially with a slighter smaller wheel...
The bottom bracket drop is the same on all the Gunnar Sports--80 mm. On the Rock Tour it is 40 mm for the 26" wheel. Therefore, the ground clearance on the Sport it is something like 715-80=635 mm and for the Rock Sport it is (16" frame, 26" wheel) it is 670-40= 630 mm which is surprisingly similar.
The Rock Tour has more standover clearance. Longer chainstays and wheelbase (smoother ride). The top tube is the same. More clearance under the down tube for hydraulic front fork excursion but the riding position could be made similar on either.
The Rock Tour is a sweet concept and if I buy one more bike it would be something like it. (Hopefully it goes fast cross country since I would need to be able to outrun the wife.)