That was a complicated Rotary intake setup. Actually, at least one Rotax engine for Ski-Doo sleds had a somewhat similar setup where a single rotary disc controlled 2 intakes for a 180 degree Twin, around 6-700 cc if I remember correctly. Always thought that was an elegant solution.
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Interesting motorcycles, not XS650
- Thread starter Kevin Werner
- Start date
Sparkyduc
XS650 Addict
I’ve never seen one of those
I love rotary engines (owned two Mazda RX cars); the concept has simple engineering, and can produce smooth power. More please.
It's a 2 stroke bike engine with a homemade rotary intake valve added.
Hic.......
I was curious about the longevity of the belt running on small diameter cogs. My first thought is about 10k-12k rpm 2 strokes but second thought is maybe that is a 7-8k rpm motor. That drive does make for a narrow package. Can-Am did a rotary disc with a carb behind feeding an elbow into the disc and a narrow package aslo.
At least it's not an interference engine...
Polish made WSK - that looks to be a mid to late '70's. Has some quality looking bits on it for that era
As side note on that. My rotary disc engine had an airbox failure. At 5-6000rpm some stray bit went into the disc and peeled a strip like a sardine can opener out of a good portion of the disc. Imagine 5000 rpm to 0rpm in ~110-140 degrees.At least it's not an interference engine...
92 mph pedalled...
Ryan always tickles me to no end...
I'd like to hear that CBX running. I bet it's awesome with those gorgeous pipes!
Like the old Harley too. All the exposed machinery just looks right.
Like the old Harley too. All the exposed machinery just looks right.
Hudriwudri
XS650 Addict
@Kevin Werner
Hey guys, i am not completely sure that the shown engine is a rotax.
If I'm not completely wrong, this might a picture of the heavily modified vespa engine (small block) of a fellow scooter colleague in the shifter scooter forum in Germany.
Kind regards and happy Christmas
Christman
Hey guys, i am not completely sure that the shown engine is a rotax.
If I'm not completely wrong, this might a picture of the heavily modified vespa engine (small block) of a fellow scooter colleague in the shifter scooter forum in Germany.
Kind regards and happy Christmas
Christman
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Right, it is not a Rotax. My search came up as a Vespa or scooter motor or a racing kart motor. Cheers
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Just a rat.
