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Making a Scooter

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Unread postAuthor: CS » Tue Feb 14, 2006 2:18 am

47cc is defintly enough. My freind has a mini-bike and it goes 40MPH. Its low end sucks wang, but if you ride the throttle in about 200 ft your going ~40MPH. Since scooters and mini bikes are close to the same weight you should be able to get about the same speed. Air resistance is proably the only dif I can think of, and I dont think it would have that much of affect.

<tangent>Im slowly, but surely working on my mini bike. Which will be powered by 12HP snowmobile motor. Its just that Im stuck with a meteric back tire and a standard motor.</tangent>

*Slap* Back on topic...
I would suggest finding another horzontail shaft motor. Or you could be so ghetto as to weld a centerfugail clutch to the shaft of the chainsaw. Good Luck.
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Unread postAuthor: guitarfreak » Tue Feb 14, 2006 6:53 pm

that sounds good. centrifugal clutch is not a problem, chainsaws over here already have the clutch on them, stock.
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Unread postAuthor: jrrdw » Tue Feb 14, 2006 7:14 pm

Chainsaw engines rock out!! They are built for high rpm ranges for long periods of time. Plus the clutchs are built for high tork conditions also. as for the sproket, well you will have to change it. Chainsaw sprokets are made to run a draging type chain, you will need a meshing type sproket, the kind a bike uses. The teeth go inbetween the rollers in the chain.

http://www.jackssmallengines.com/

This is where i get allmost all my parts for my lawnmower repair business, they sell gokarts and related parts.

Post pics of it dureing the build so we can see how it's going, feel free to ask me any questions.

Good luck!
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Unread postAuthor: guitarfreak » Wed Feb 15, 2006 8:41 pm

*ANNOUNCEMENT*

I have just bought (on lay-by) a 2hp briggs & Stratton industrial motor that i will use. $50,including the lawnmower it's attatched to. Pretty good deal i think....will have it in 2 weeks, plan to post pics. runs pretty well, not too much rust.
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Unread postAuthor: CS » Wed Feb 15, 2006 9:52 pm

Not a vertical shaft is it? If so that sucks because that will take a lot of work to get a scotter to work on a vertical shaft motor.
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Unread postAuthor: guitarfreak » Thu Feb 16, 2006 12:04 am

pimpmann22 wrote:Not a vertical shaft is it? If so that sucks because that will take a lot of work to get a scotter to work on a vertical shaft motor.
nup, horizontal shaft, like in the old reel lawnmowers. its good, because i have actually had alot of experience around that model motor, so ill know how to fix it if something goes wrong. Now, anyone got any ideas for a rear wheel? it will be chain drive, so im thinking a kid's motorbike rear wheel: it already has the drum brake on it and already has sprocket mounts.

*EDIT*

Im going to use a 14x4" wheelbarow tire for the back wheel, and will make an axle setup. will post more info when it comes.
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Unread postAuthor: guitarfreak » Sun Mar 19, 2006 12:27 am

right, have mostly built the frame, pics:

The briggs and stratton motor, 2hp, ancient, needs work doing on the carb:
Image

Detail of how i mounted the sprocket (10t) on the motor shaft:
Image

The back wheel (14") complete with rolled-steel fender:
Image

Top view of the back whee, showing bearing housings off an old reel mower:
Image

The whole frame, needs a front wheel and the motor mounting:
Image

Note: when i say "I", i mean "me and my father". i did most of the planning of the frame and welding of it, but my father did alot aswell.

will update when i get more parts (in about a week or 2)
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Unread postAuthor: TalonXxX » Sun Mar 19, 2006 1:40 am

That's going to be soooo awesome! Cant wait to see more of your build. Really nice work so far! cheers
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Unread postAuthor: jrrdw » Sun Mar 19, 2006 6:37 am

I'm wondering how your going to mount the sproket on the drive wheel? The idea of useing a old minibike wheel is a realy good idea, to mount a sproket dead center and plum to the rim/wheel, is going to be a true test of patients. Looks like a good start, check out the GO-KART WITH BALLS i'm building- http://home.att.net/~j.weber/wsb/html/v ... html-.html , then click on photo's. Feel free to ask any questions, keep us posted.
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Unread postAuthor: guitarfreak » Mon Mar 20, 2006 5:17 pm

jrrdw wrote:I'm wondering how your going to mount the sproket on the drive wheel? The idea of useing a old minibike wheel is a realy good idea, to mount a sproket dead center and plum to the rim/wheel, is going to be a true test of patients. Looks like a good start, check out the GO-KART WITH BALLS i'm building- http://home.att.net/~j.weber/wsb/html/v ... html-.html , then click on photo's. Feel free to ask any questions, keep us posted.

mounting the sprocket will be easy, just machine up a stepped plug that fits inside the sprocket, and grub screw it to the axel. give me a yell if you want a picture drawn up.
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Unread postAuthor: guitarfreak » Thu Mar 30, 2006 6:58 pm

***UPDATE***

I have the motor running well now, it just needed the points cleaning and a tune-up. will probably do some work in it this weekend.
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Unread postAuthor: jrrdw » Thu Mar 30, 2006 9:03 pm

On the flywheel cover beside the spark plug there are 3 sets o8f numbers. The 3rd set, (code), what are the 1st 2 numbers? That tells what year it is.
I'll take a guess at it, some where in between 68-72, it looks rite around them years. Let me know.
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Unread postAuthor: guitarfreak » Fri Mar 31, 2006 12:01 am

jrrdw wrote:On the flywheel cover beside the spark plug there are 3 sets o8f numbers. The 3rd set, (code), what are the 1st 2 numbers? That tells what year it is.
I'll take a guess at it, some where in between 68-72, it looks rite around them years. Let me know.
ok, will do that tonight if i get the chance. thanks for the info :D
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Unread postAuthor: spud freak » Sun Apr 02, 2006 1:43 pm

you should use a 4-wheeler tire as the rear tire.It would look awsome.and a steel and solid rubber lawn mower tire as the front.you know,the little ones
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Unread postAuthor: guitarfreak » Sun Apr 02, 2006 10:56 pm

not this time, i already have 2 wheelbarrow wheels lined up. now have a rolling chassis, will post pics soon. the motor is from 1969,thanks jrrdw!
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