I bought a Staton kit with a gearbox of machined gears that would last 20 years and did about 1300 miles in 9 weeks on the bike with a Robins Subaru EHO35. It was great and I felt like it would handle most anything I threw at it. I rode with datz510 a lot and decided to try for more horse power so I bought the Tanaka 40 and the GEBE kit for a hundred and fifty dollars more than I spent on my Staton.

When I got the GEBE I was disappointed in the plastic ring that is expected to clip on the rim. I live in the desert and the heat eats up plastic. I was also disappointed that a product that cost less than half to produce than the Staton was priced more than the Staton. The motor cost $70.00 more but the basic kit was more than half of the difference in cost. I promptly sold my GEBE kit and will never know if my conclusions were right, but am happy with my decision to go with steel and aluminum rather than plastic and rubber to drive my 240 pounds around the desert. I am putting together a Chinese frame mount and SickBikeParts shift kit, and will soon have plenty of power.

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LennyHarp of Lenny's Bikes & Things
http://lennyharp.net
The true value of a man is not judged by what he has, but rather by what he can do without.
"We are what we repeatedly do. Excellence, then, is not an action, but a habit." -- Aristotle