4-stroke engine fit on mountain bike...
- Thread starter plamb
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Sidewinder Jerry
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What kind of surface are you planning to ride on paved or dirt? What grade hills are you talking about going up?
CrazyDan
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My 53cc hs-144f would climb any grade hill no issue at a 20:1 reduction and had a top speed of 35 mph on 26" wheels. I now have a shifter kit on it and it does 47 mph in its current configuration. I did have it geared to 53 mph with different ratios, but it was a tad too slow coming out of corners.
I've off roaded in hilly regions and brought it to a local skate park a few dozen times. This engine may be chinese, but chinese quality has gotten much better over the last 30 years.
I've off roaded in hilly regions and brought it to a local skate park a few dozen times. This engine may be chinese, but chinese quality has gotten much better over the last 30 years.
LewieBike
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Plamb, Note that your bike's rear wheel is laced with 32 spokes. Most motorized bikes would be better served by a wheel with 36 spokes. Your choice, but I think a higher quality wheel would be a better investment.
And actually an MTB made of CroMoly steel frame tubing, built in the late 1980's, early 1990's would be a sturdier bike and have more frame clearance for the engine. Once again, your choice.
The trick is finding one of these mythical bikes that's in good useable shape. An older MTB would be spec'd with 36 spoke wheels and would have better parts.
And actually an MTB made of CroMoly steel frame tubing, built in the late 1980's, early 1990's would be a sturdier bike and have more frame clearance for the engine. Once again, your choice.
The trick is finding one of these mythical bikes that's in good useable shape. An older MTB would be spec'd with 36 spoke wheels and would have better parts.
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Sidewinder Jerry
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35 mph on 26 inch wheels with a 20:1 reduction, how do you keep from blowing the engine doing 9050 rpm? Unless you were talking about down hill speed.
Most of the small 4 strokes max horsepower is at 7000 rpm. A small person could do 35 mph at 7000 rpm with a 15.46:1 reduction on 26 inch wheels.
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darwin
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Lewie, what in the world made you count the spokes on his rim? OCD maybe? Come to think of it I don't know how many spokes my wheels have. See what you've started, now I feel a need to count them!
Sidewinder Jerry
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Spoke count, spoke gauge, spoke patterns, rims and hubs are common things to know especially if you build wheels
Lewiebike, So I've been measuring the space between the tubes on my two mtb and I found that my old early 2000s genesis 26 bike has more space than my new 29 tornado (both Steel, it looks to me the welding on my genesis is much better than my New 29er) .The genesis has 26 wheels, no disc brakes and no suspension. What are the downsides of having 32 rear wheel spokes? I'm 156 lbs btw
darwin, the HS 53cc I found costs around 200$ and more, is that normal? The mitsubishi would cost me 150$ brand new( I actually don't know where they are made, could be chinese too).
Some pictures from today(the measure is not perfectly aligned cause I had to take the pics) :
darwin, the HS 53cc I found costs around 200$ and more, is that normal? The mitsubishi would cost me 150$ brand new( I actually don't know where they are made, could be chinese too).
Some pictures from today(the measure is not perfectly aligned cause I had to take the pics) :
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