Just another WordPress site

Time to build a 27.5″ wheeled mtn frame

I haven’t really had an opportunity to build a mountain bike around Kirk Pacenti’s 27.5″ mtn bike tires. These tires mount on a 650b rim. The overall wheel size ends up being half way between a normal 26 inch wheel and a 29 inch wheel. I am going to try to build Christine a combo style of bike. She needs a bike for commuting and for trail riding. I have designed the bike so it will handle properly as a commuter with a 650b X 38c tire or as a rigid mtb with the 27.5 inch tires. The BB height is critical and can be adjusted accordingly with the eccentric bottom bracket.

christine-650b.jpg

The frame is being built out of True Temper Platinum tubing. I am not sure what the final paint scheme will be. So far a brown/pink combo seems to in the running.

christine-main.jpgchristine-ebb.jpgchristine-head.jpgchristine-tacked.jpg

For years I have dreaded reaming seat tubes. I never really seemed to have an efficient system that didn’t require a huge amount of elbow grease. A little while back I found a number of 1.5 hp motors with gears boxes attached and thought that some day I might have a chance to use them for a reaming machine. My friend Wheelspinner put this machine together for around $200 and a couple of afternoons of work. It works like a dream!

reaming-machine.jpg

Comments are closed.