Friday, March 13, 2009

The ride



Done, for now.

I'll do a full bikecheck later, maybe tomorrow.

Putting the gears on was interesting. There are a few tough points. First off, running gears with BMX cranks and a singlespeed hub is never easy. The cranks, Primo Powerbites, run a 22mm spindle, so that made my choices a bit harder. There is only one sprocket on the market that clears a 22mm spindle and will play nice with a 9-speed chain, so that was an easy choice. Profile Imperial. Luckily I got one of the few Imperials that Ten Pack Distribution had left after they dropped Profile, a 33t polished Imperial. Sick! The singlespeed hub really just means it's dishless, so since it has room for a 6-speed cassette, I reduced a SRAM PG-950 that I got for a steal.

What was tricky was the chainguide. Firstly, I had to add some spacers on the driveside, between the BB and crank arm, because otherwise the sprocket bolt would grind against the LG-1 backplate. I also had to run the LG-1 top guide higher than I otherwise would've, because the Primo crank arms would rub against the lower part of it if I ran it as it should be run with a 33t ring.

Next up, limiting the X.0 proved impossible. Because of the design, the easy limiting method, playing with the limit screws, meant that when reduced to 6-speed, it just wouldn't shift down. Impractical to say the least. So now I just have to be vigilant enough not to shift down too much.

More later. So proud of it right now.

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