Yes
Unless by freewheel you mean driver (in which case 8-9) I haven't ridden bmx in a few years but last time I checked the smallest freewheel you could buy was 12 tooth which would make for quite a low ratio
Any size will work. What'll work best depends on what you want it for. Higher top speed - go for a big sprocket. Quicker off the start - go for a smaller sprocket.
depends on your clutch, rpm, tire, and tooth gear on sprocket and driver (clutch) lets just say if you have a motor pulling 3600 rpm with a 12" in diameter tire and a 45 tooth gear and 12 tooth sprocket you can get to 34mph but hills and wind resistance is a big factor in it to so i can vary.
A mini stock bike has 5.5 horsepower. If one has motor pulling 3600 rpm with 12 inches in diameter tire and a 45 tooth gear and 12 tooth sprocket, one can reach to 34 mph but hills and wind resistance is a big factor.
40
If the crank has 48 and the sprocket 12 then 48/12=4. The wheel will turn 4 times for each turn of the crank.
When the engine is at #1 TDC, the dot on the crankshaft sprocket is at 12 o'clock, and the dot on the cam sprocket is at 6 o'clock.
12 counter sprocket 47 rear
First you need to be clear about what you're talking about.In normal bike-speak the sprocket(s) go at the rear wheel.Either only one, or a stack of them in the shape of a freewheel or a cassette.Up by the pedals you have the chainwheel(s) / chainrings(s).Now, for some strange reason, often in BMX-speak, the sprocket goes at the front, and what you have at the back is called a driver.But let's stick to regular bike-speak, sprocket = rear, chainring = front.In this case, going to a bigger sprocket will make the bike easier to pedal.You get more power, but less speed.The rear wheel will turn less for each turn of the pedals. Good for getting going, bad for going fast.Going to a bigger chainring will have the opposite result.More speed, less power.You'll need to push hard to get the bike started, but your top speed can be higher. The rear wheel will turn more for each turn of the pedals.If you get both a bigger chainring and a bigger sprocket, the changes will kinda-sorta cancel each other out. Not exactly, unless you get them both proportionally equally bigger. But pretty much.Let's the tooth count is 12 rear and 36 front, and you change to 14 rear 42 front.This time nothing really changes as 36/12=3 and 42/14=3. The same number of turns at the wheel for each turn of the pedals.
Tommy Tucker's Tooth was created on 1922-12-06.
Lassie - 1954 The Tooth 4-12 was released on: USA: 24 November 1957
20 rpm