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Old 11-25-2008, 10:32 AM   #4 (permalink)
dichotomous
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Join Date: Nov 2008
Location: vermont
Posts: 142

CivySi - '03 honda civic SI
90 day: 31.99 mpg (US)
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Quote:
Originally Posted by beatr911 View Post
Very interested in your project. This is exactly what I would do if I had an extra 5 hours a week, but I'd use a Kawasaki Ninja 650 or better yet 250, just cause I like 'em. Your SV will do quite well anyway but be sure to address gearing and cam timing to optimize the engine efficiency at higher speeds. Doing this alone should net you 65mpg+ in current form.

I think the project you and Craig Vetter are undertaking have great potential. Not sure why Craig isn't getting the mileage he should. Something tells me the Helix 250 drivetrain, though capable, is not optimized for highway speeds.

Good luck and go forward with this. Blaze the trail for all of us that want to do it someday. We'll be watching...
yeah you need a certain amount of power to go fast. plus he cant really swap out gears nice and easily, I can. I can run a 17 sproket up front and a 44 in the rear, right now I am at 16front 45 rear, which is up from 15 front stock and 45rear stock. it would just lope along at that speed. the engine will lug pretty easily below 3,000rpms but 3500-5500 is a nice sweet spot.

I will be doing it quite a bit different from vetter though, he thinks his thick aluminum and plastic version is light, but not as light as a thin fiberglass shell. he's also designing his to work when he's sitting straight up, mine will only be slippery when I am tucked, this has a couple reasons:
1. I like to tuck, all my weight is held on my butt and chest and none on my hands, its really comfy.
2. I want to regulate the airflow over my body, when its hot, I want lots of air hitting me, when its cold, I want none hitting me, this is easy to accomplish if all I have to do is sit up.
3. my bike rides really nice tucked or sitting, either way, so why not use both?

my design will also be a fair more attractive and easy to bolt on when done, without any frame mods and all as 1 peice.
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