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Roger the dodger
New Member
Denmark
3 Posts |
 Posted - Jul 23 2005 : 09:37:44 AM
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Hi guys, i just stumbled across this forum, and decided to abandon my usual reclusiveness and actually contribute something.
I had too much free time to myself last summer, and decided to mate my old briggs and stratten rotovater to my cycle. I've been bolting engines to stuff since i was a kid, but this is by far, my favourite, just because its so hilarious! I've bolted the 5hp engine just behind the saddle above the back wheel(its a bit top heavy!). Its geared down to turn the pedal crank at about 180rpm(full throttle), which is then applied to the conventional 15speed cycle gears. Foot-rests are welded on above the pedals. In top gear its good for about 50 mph. In bottom gear it can flip you over! Most of the hilarity comes from the pedals turning round.-looks kind of ghostly!. We get a lot of competion cyclists around where I live, I just love powering past them, with my feet up, idlely lighting a cigarette...
I have some pictures and video clips if anyones interested, but i dont have anywhere to upload them
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Roger the dodger
New Member
Denmark
3 Posts |
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Aaron Cake
Administrator
Canada
6718 Posts |
Posted - Jul 25 2005 : 09:14:19 AM
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That's great! Have you ever hurt yourself on the pedals? I can see them scrapping the backs of your legs...
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Kale
Nobel Prize Winner
Canada
795 Posts |
Posted - Jul 26 2005 : 12:54:25 PM
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Isn't there a rachet-like mechanism in a bike's drivetrain that lets the back wheel rotate disengaged from the pedals? I know that if your feet aren't on the petals they will still freewheel a bit while you're coasting, but not with any real force.
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cirvin
Nobel Prize Winner
USA
1542 Posts |
Posted - Jul 26 2005 : 5:00:35 PM
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It looks like he has a sprocket welded or something to the pedal shaft thing itself.
The mechanism you are describing allows the wheel to turn faster than the drive sprockets. It only work to have the pedals stationary if you applied the turning motion to the well itself. Since he is using the bike's existing drivetrain, the chain still moves and the pedals do to.
I would have removed the pedals and just used a bar and the bearings with sprockets.
http://daxter12.topcities.com <Updated 5/27/05 |
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sergiosparks
Apprentice
Philippines
132 Posts |
Posted - Aug 07 2005 : 02:16:57 AM
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Beautiful !..i'll send a picture to a friend.
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Kale
Nobel Prize Winner
Canada
795 Posts |
Posted - Aug 09 2005 : 4:45:06 PM
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quote:
It looks like he has a sprocket welded or something to the pedal shaft thing itself.
The mechanism you are describing allows the wheel to turn faster than the drive sprockets. It only work to have the pedals stationary if you applied the turning motion to the well itself. Since he is using the bike's existing drivetrain, the chain still moves and the pedals do to.
I would have removed the pedals and just used a bar and the bearings with sprockets.
http://daxter12.topcities.com <Updated 5/27/05
Ah, I see what you mean. He's driving the pedals with the motor. Cute.
Now all you need is to get one of those sports water bottles that attach inside the frame and fill it full of diesel. I know the motor already has its own little tank, but the 'water bottle' would just be funny if you could rig up a feed mechanism.
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cirvin
Nobel Prize Winner
USA
1542 Posts |
Posted - Aug 10 2005 : 10:28:37 AM
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Diesel?
That's a gasoline engine.
I bet you could pull a fuel pump off of an old lawn tractor engine.
http://daxter12.topcities.com <Updated 5/27/05 |
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'motor'bike
