Z
zumer
Guest
The Taiwanese "pro-rotary" engines are clones of the Sachs, they differ in a few ways: The Sachs has a decompressor valve linked to the exhaust - if there's exhaust back pressure, the valve opens and drops the compression ratio. The Sachs has head and barrel in one, on the pro-rotary they're separate. Sachs sold off the division that handled the Saxonette/Spartamet to a German bike maker called Hudson. There's another Taiwanese company called McLee who sell bikes already built with a similar motor, web site is www.twforsen.com don't know if it's that exact one or another copy. They use the frame downtube as the fuel tank, and managed to patent that! Reasonable pricing, they offer their bike for $450 US, although there's no shipping in that figure.
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