There's really no telling, it depends on what you want from the bike, where you ride and your fitness level. Basically, the smaller your expected speed range, the fewer gears you can have and still be entirely happy. OTOH, if you want to be able to ride both severe climbs and to be able to keep the power on during descents, then you need to be either super fit or have a really wide range of gears.
If you live and ride in a flat city, 5 speeds might do just fine.
If you want to do mountain touring, even a 27-speed might feel a bit cramped.
MotoGP bikes have 6 gears.
dirt bikes in the past had less gears and power then dirt bikes have today
Racing bikes are so different from your conventional bike in many ways. They are made to be a lot lighter than the average bike you see today and are made for speed. Racing bikes are fitted with minimum components the gears can range from 18 gears to 30 gears.
Depending on the mountain bike that you have will depict the amount of gears. Most bikes for adults typically have about 21 gears. If this does no answer your question then what are levels?
Most bikes have either 1, 3, 7, 8, 18, 21, 24, or 27 gears, depending on the type of bike and its intended use.
They were only five speed bikes. Five rear cogs on a freewheel and a derailleur.
old school bikes had 3 or 4 speed, then they got five speeds later,but todays bikes can have 5 or 6 speed now.
Speedway bikes typically have a single gear. They are designed for short track racing and do not require gear shifting, as the focus is on acceleration and high-speed turns. The lack of gears simplifies the bike's design and reduces weight, allowing for better performance on the track.
Depends on the make and model of the bike. Some motocross bikes have 4 gears while most of the cross country thumpers are 5 or 6 speeds.
Most motorcycles have 5 speed transmissions although there are a number of bikes with 6 speeds including Harley's big twins.
Camagnolo don't make bikes, they make bike parts, like gears and brakes. Many Tour de France winners have won on Campagnolo-equipped bikes. There have been thirty winners on Campagnolo-equipped bikes. The most recent was in 2006, Oscar Pereiro won.
Sure. Older bikes can have 3 chainrings(the toothed wheel by the pedals) and 6 sprockets (smaller toothed wheels at the hub of the rear wheel). 3x6 would make 18 gears. Newer bikes can have two chainrings and 9 sprockets, also making 18 gears. Do note that with a set up like this although you get 18 gears you aren't getting 18 different gear ratios. Some combinations will be so close as to make no difference. In reality you can expect to have about 2/3 as many different ratios as you have gear combinations. Newer bikes can have as much as 27-33 gears as stock, which would allow for around 18 different gear ratios.