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Uberscoot 50cc BZM Polini

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  • Uberscoot 50cc BZM Polini

    Just finished so I thought I'd post a pic. Started off as a stock Uberscoot two speed scooter. Added Polini 910 rims/tires, Polini 6.2 engine with black insert crankshaft, BZM 50cc cylinder kit, and 15mm carburetor. Had to install above engine level gas tank due to float carburetor. Expecting 50 to 60 mph at 12 horsepower. Test ride coming next week.
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  • #2
    Pretty cool! So is that a big bore kit then? What is the stock displacement? And what did it take to mount it?

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    • #3
      Fortunately, it's not that hard of a modification with the Evo style scooters. The right side engine plate provides a nice flat surface for drilling the engine mount pattern. I started with a Polini 6.2 pocket bike engine. They come standard with 6.2 horsepower and are 40cc. I ordered the BZM 50cc air cooled cylinder kit from Italy. Much easier to deal with than water cooled...I've done those too. The kit is a direct bolt on. I already had the larger carburetor and exhaust to accommodate the larger displacing 50cc head kit. I had to drill the four mounting holes on the side engine plate to accommodate the Polini pattern. I also had to use the Polini clutch drum which with a small modification fits perfectly onto the Uberscoot transmission. It's like they were made for each other. But these things are like quarter mile race cars. I would not take one on a long ride. I use my Active powered Uberscoot for 20 mile rides all the time...it's the Toyota Camry of scooters.
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      • #4
        Thats hella sick...love the set up on it hows the gearing on it.whats the top speed on it

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        • #5
          Not sure on the gearing. I know the front is the stock 11 tooth. I switched out the back for a smaller one...probably 38 or 40...stock is 52. Got it up to 45 today but keep running into stop signs and red lights. I need a long strip without fear of cross traffic which is hard to find in Los Angeles. Might take it to an airport nearby soon. Stay tuned.

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          • #6
            I am actually looking to build a GSR, where can i find the complete BZM 50CC Race engine.?

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            • #7
              Originally posted by lonehead View Post
              Just finished so I thought I'd post a pic. Started off as a stock Uberscoot two speed scooter. Added Polini 910 rims/tires, Polini 6.2 engine with black insert crankshaft, BZM 50cc cylinder kit, and 15mm carburetor. Had to install above engine level gas tank due to float carburetor. Expecting 50 to 60 mph at 12 horsepower. Test ride coming next week.
              Where can i buy complete 50cc BZM Race engine for my GSR Rolling chassis

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