You have to measure the wheels outer circumference, in mm's, then enter that number into the speedometer.
1. Place a strip of tape on the ground, draw a line on it.
2. Place the wheel over the line, align the wheels inner-tube valve with that line.
3. Roll the wheel one complete revolution, mark that spot under the inner-tube valve onto another strip of tape, and measure the distance between those two lines on each strip of tape.
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All things being equal, a 24" wheel will be stronger sideways than a 26" wheel.
The size of a child's bike ranges from a 12 inch wheel size for ages 2-5 to a 24 inch wheel size for youth ages. Usually a child with a height of 28-38 inches will need a 12 inch wheel size while a child that is 48-60 inches tall will need a wheel size of 20-24 inches.
The bike that you should think of buying an active 9 year old is a 24-inch wheel bike.
MAYBE - , frame size has nothing to do with tire size. Style does, and if its a mountain bike, it will not work with a 27 (road racing) wheel and tire. Brakes will not fit.
A bicycle store should be able to sell one to you, or you can order one online. Single wheel 24 inch isn't hugely popular, so you might have to do a bit of searching.
the overall frame size. not specific to wheel size, as most mtb wheels are 26 inch.
It wont. They will only change when you increase/decrease the size dramatically as the wheel or tire. A one inch change wont make a difference.A more accurate answerIt's true that the size of the rim does not directly have any impact on the speedometer accuracy. But changing the rim size generally means that you'll be changing the size of the tire. The speedometer is directly affected by the circumference of the tire that is used. If you use a tire with a 10% larger circumference, the speedometer will indicate that you're going 10% slower than you really are. If you match the circumference of the 14 inch tire to the circumference of the 15 inch tire, the speedometer accuracy will not change.
The speedometer reading differences should be negligible if you spec the tyres according to the manufacturer's manual because the tyre profile for a 15" wheel would have been fatter than that of 16" for the same car. The meter is calibrated to the inflated tyre mounted on the wheel and the reading is a close approximate of the actual speed only.
The bike that you should buy for your nine year old son is that with a 20-inch wheel with suspension forks and adequate front suspension.
This completely depends on the wheel. The most common number of spokes per wheel is 36. Some better wheels have 32. Higher performance wheels have even less.
The best price you can get for a 24 inch Schwinn bike is $202.43.