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Old 01-18-2013, 07:33 PM   #1
toothy OP
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What's a good 50cc platform to modify to a larger displacement?

I want to make a faster-than-legal scooter for a person in my life.


What model and make is most simply souped up?


Thanks, tooth.
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toothy screwed with this post 01-18-2013 at 08:50 PM
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Old 01-18-2013, 08:18 PM   #2
tbonestone
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Well opinions are like butt holes... everyone has one, do if you want my opinion a zuma is my top vote. The parts and shops offering them can put out some crazy bikes out.
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Old 01-18-2013, 08:25 PM   #3
elzebub
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I second the Zuma suggestion, great platform for modding.
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Old 01-18-2013, 09:55 PM   #4
brianwheelies
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Ruckus seems to be the most heavily "swapped" platform.
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Old 01-18-2013, 10:00 PM   #5
seraph
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Zuma if you want to modify the stock engine - 70cc kit, pipe, big carb, etc - they can do 60mph or better and wheelie most of the way there (a mechanic friend has a 2-stroke Vino, same motor, and with a big carb and a pipe on the stock cylinder it'll manage both the wheelies and the 60mph parts).

Ruckus if you want to swap the motor - there's tons of info out there on swapping in either Zuma 2-strokes or bigger GY6 150cc 4-strokes. Just make sure you upgrade to disk brakes, too, as the stock little drums are underpowered even for the stock, slow, 4-stroke 50cc motor. The Ruckus crowd has even taken to turbocharging their motors now.
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Old 01-19-2013, 05:32 AM   #6
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ANY Minarelli 50cc 2stroke.
Huge aftermarket, up to over 100cc and over 30HP (yes, over THAT much).
Zuma, Jog, Piaggio stuff, etc.

25-30HP in a 70kg frame goes pretty good........
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Old 01-19-2013, 08:13 AM   #7
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Originally Posted by toothy View Post
I want to make a faster-than-legal scooter
The downside of "gaming the system" is legislative changes . . comply with the law.
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Old 01-19-2013, 08:36 AM   #8
ragtoplvr
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I know of a case where an officer in Missouri clocked a hopped up moped going well 40 no tags and insurance. It could have been several tickets, but the officer was nice and only wrote one. He did say this time.

Could have been no helmet, no endorsement, no insurance, no tag and who knows what else.

Rod
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Old 01-19-2013, 09:09 AM   #9
tortoise2
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Could have been no helmet, no endorsement, no insurance, no tag and who knows what else.
Scooter impound expenses and, depending on state statute, arrest.
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Old 01-19-2013, 09:16 AM   #10
chazbird
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Technically its a motorcycle but a Honda Passport with Lifan 140cc 4 speed manual engine swap.
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Old 01-19-2013, 10:25 AM   #11
JerryH
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I have built a couple of mopeds (actual pedal mopeds) that would exceed 50 mph, legally they are limited to 30 mph. You just have to be careful where you ride them. Neither one of those engines had a very long lifespan, the power and high RPM simply overwhelmed the stock bottom end.

I'd say a Zuma 2 stroke is the way to go. The Genuine Rattler 110 2 stroke is interesting, but I have no idea what is available for it. You could get away with a Zuma, if it has a motorcycle plate on it. No displacement or speed limits on motorcycles. In my state everything BUT pedal mopeds MUST have a motorcycle plate on it, including 50cc.

The Ruckus with a GY6 swap is a whole nother matter. It is about twice as long as a stock Ruckus, and would be real easy to spot. I'm not sure what those guys do. Even in states where a 50cc has to have a motorcycle license and plate, what do they insure them as? The VIN shows 50cc, but a GY6 is 150cc. If you insured it as a 50cc, your insurance would not likely be any good. In my state it could be registered as a special construction vehicle, but that is hard to do.
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Old 01-19-2013, 10:30 PM   #12
YamaGeek
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1960's C100 + whatever Honda clone engine strikes your fancy.

Like was said earlier in this thread, a Lifan 140 cc will fit most step through Hondas and make it faster than it's designed for, which is what happens with any 50cc bike that's modded to go faster.

The Genuine Rattler 110 hop ups are limited to about 125 cc's and although add a lot of punch, the stock bike is not the same bike as the 50 cc Rattler. It's larger and heavier, and the 110 engine as stock is pretty peppy.
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Old 01-19-2013, 10:57 PM   #13
brianwheelies
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Scooter impound expenses and, depending on state statute, arrest.
Tortoise, it isn't every day that one runs into the fanatic Sargent who is notoriously abusing authority and beating innocent people. Not only that, in court everything was dropped and I did that myself without a lawyer.

That being said, shit can happen. As long as it is registered and insured with proper licensing(all very inexpensive with a scoot) who cares about the mods.
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