A sprocket in bikespeak is the toothed wheel that the chain runs over/around at the the rear wheel and makes the bike go forward when you tension the chain. The bigger toothed wheel by pedals is called chainring, or sometimes chainwheel. The combo driver sprocket sounds a bit home cooked, usually there's no need to point it out like that. The only exception I can think of is on recumbents, which sometimes use an idler sprocket to deal with the long chains those bikes often end up using.
13t driver goes on a 33t sprocket
well if you have a 8 tooth rear driver you will need a 23t sprocket, if u have a 9 tooth rear driver you will need a 25t sprocket, if u have a 10 tooth rear driver you will need a 28t sprocket, and if you have a 11 tooth rear driver you will need a 30t sprocket
a 25 tooth sprocket will fit on a 9 tooth driver
9 tooth driver
Front of the engine, points at the driver side cam sprocket.Front of the engine, points at the driver side cam sprocket.
If the driver/freewheel isn't too badly worn you can keep using it even if you replace the sprocket.
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.
First you need to be clear about what you're talking about.In regular Bike-speak, sprockets go at the rear, and chainrings/chainwheels go at the front.In BMX-speak, a sprocket goes at the front, and a driver goes at the rear.If you're speaking BMX, a small sprocket will increase the ground clearance.Better if you're riding ramps as there's less risk of the sprocket/chain hitting the lip as you drop in.For speed it doesn't matter, as long as you pick a driver with a suitable tooth count.If you're not riding ramps, well, a smaller sprocket is still lighter, which is a kinda-sorta advantage.The downside is that with a smaller sprocket, you will have to use a smaller driver. And the smaller they get, the faster they wear. And the chain wears too.
First you need to be clear about what you're talking about.In regular Bike-speak, sprockets go at the rear, and chainrings/chainwheels go at the front.In BMX-speak, a sprocket goes at the front, and a driver goes at the rear.If you're speaking BMX, the most obvious difference is the size, the tooth count.For the same size driver, a bigger sprocket will make the bike slower off the start, but give it a higher top speed.For the same size driver, a smaller sprocket will make the bike quicker off the start, but give it a lower top speed.If you change the driver to match, start and top speed will remain the same, even with a smaller/bigger sprocket. A small sprocket will increase the ground clearance. Better if you're riding ramps as there's less risk of the sprocket/chain hitting the lip as you drop in. If you're not riding ramps, well, a smaller sprocket is still lighter, which is a kinda-sorta advantage. The downside is that the smaller they get, the faster they wear. And the chain wears too.
For a pulley, it is driver RPM x driver diameter = driven RPM x driven diameter. Keep in mind that the diameter you should use is the diameter where the belt is riding in the pulley. For instance, an A belt in an AB pulley will ride lower in the pulley than it would in an A pulley. For sprockets, the formula is the same, but replace the diameter with # teeth. It looks like this. driver rpm x # teeth of driver sprocket = driven RPM x # teeth of driven sprocket
Front of the engine, points at the driver side cam sprocket.
yes becuase other wise if you use any bigger it would not run