One common reason for the gears sticking is incorect oil type, motorcycles have wet clutch and specific motorcycle oil must be used, otherwise the clutch drags and gears are hard to shift.Aside from any major problems with the transmission itself, is your clutch working properly? Is it set correctly and fully disengaged when it is not being used. I would start here. You may need new plates in your clutch itself.
6 gears and neutral.
It has 5 gears mine has 6 gears
It depends on the bike if the engine of bike is heavy it has more gears. Usually 5 gears are max gears.
Depending on the bike yes most adult sized bikes have gears
The left leg shift.
they all have stuff sticking out of them
No a motorcycle is way harder different gears and stuff so a car is easier
Yes motorcycle gears will shift up and down.
One gear at a time Use the clutch, push up or down on the foot shift lever.
you have to take apart the motor completely
A manual transmission with 4 forward gears in either a car or a motorcycle
The only time you need to use a clutch on a motorcycle is when shifting into First, You aren't going to do any more damage to the gears than if you used the clutch. Its designed to work that way.
the kawasaki 125 has 5 speed
Depends on the torque of the motorcycle and the road conditions. Generally, don't let the engine labour and don't make the engine scream.
if it is automatic the transmission could be slipping if manual the throttle could be sticking
depends on the motorcycle, i know the CVT transmissions can have different final drive gears installed for more top end but the acceleration from a stop will be less.
Yes, providing you are not going to stall out when you release the clutch.
I can't really know what you mean by "motbike", but I'm guessing you mean "motorcycle", an engine powered two-wheeled vehicle. In which case I've never heard of a motorcycle with 18 gears. If you're stubborn enough you could certainly build one, but it'd wouldn't be an improvement. Or maybe you mean "mountainbike", human-powered pushbike. In which case it can certainly have 18 gears, or even more.
Either the transmission needs an oil and filter change/ additive to it(some mixture they sell at walmart to prevent sticking gears). Or the transmission is going bad. might need a new one
Zero. None. Enough to go forwards and that's it.
it is harder because you have to know how to both drive a car and a motorcycle. for the test You have to have good balance, learn to shift gears, be able to compensate for quick turns, heavy loads, etc. You have to have more awareness while riding a motorcycle.
Yes, there will be strain on the bearings and the gears freezes that piston walls may be scratched especially on older bikes.
If this is about a motorcycle, then the answer is that the engine can only deliver power smoothly in a limited range of RPM. If you don't change gears according to the speed you're going at, the engine will fall out of that range and begin to act up.
Yes there is, otherwise it would not be able to drive. The transmission is the gears, the chain and the sprocket. Some motorcycles have a drive shaft instead of a chain.