Sept 3

Sept 3, 2004

Riding it! - well, coasting. Very comfy and solid - surprising considering it only weighs 22.5 lbs. Of course, I still need to add disc brakes, derailleurs, a chain and some form of steering control (not yet decided). Here is how the weight might work out:

Component weights from WeightWeenies.com

Component Weight
Shimano Deore Mechanical Disc Brakes x 2 1179 g
Shimano Dura-Ace rear derailleur 196 g
Shimano Dura-Ace front derailleur 100 g
Shimano Dura-Ace chain 290 g
TCR1 as shown 10,205 g
TOTAL 26.5 pounds

Steering controls could take it up to 30 pounds - still not bad, but I really wanted to come in around 20(ish). I could replace the two rears with some light weight rims, and some of the components for composite versions, but to get it down to 20 would be difficult without replacing the frame with carbon fiber - I may look into that.

The black tube at a right angle to the pivot tube is a Canondale handle bar stem for a 1.5" steering tube - a temporary lock for the Cane Creek headset. It actually works out well because I needed something temporary to hold the bike upright when not moving. So I looped a rubber bungie cord through the stem and around the rear cross bar. Both the stem and the bungies will be replaced with a steering system. Ideally, I'd still like to look into a worm gear for the steering. I would add a gear to the tube that pokes out of the pivot tube, and drive it with a worm gear linked up by a chain to some form of steering control. This would provide the bike with very firm stability and remove peddle wobble and bump steer. It's possible to steer the bike by simply leaning from one side to the other, but it's far easier and less work with steering controls.

Many hours were spent on this one seemingly simple task welding the front section into the main boom. It has to be PERFECTLY straight and square.

The seat is a carbon fiber seat from PowerOn Cycling and I clamped it to the main boom with a couple of home made clamps (shown above). This allows me to move the seat forward or back for proper leg length adjustments.

I'm having a small issue with ankle/chain stay clearance. The back of my foot clips the side tube on the front section with every revolution. Not sure what to do about that.... I may look into extending the peddles farther to each side giving my ankles a few extra cm of space.

Tomorrow I'll add a chain and derailleur and take er out for a real spin (not too fast though - no brakes yet).



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