No differences, they mean the same.
The difference between a 21-speed and an 18-speed transmission in a semi-truck lies in the number of gears available for different driving situations. Having more gears in a 21-speed allows for finer control over the engine's RPM and speed, providing better efficiency and performance compared to an 18-speed transmission. This can be especially beneficial in varying terrain or road conditions.
An 18-speed bike has two sets of gears: the front gears (chainrings) and the rear gears (cassette). By shifting between these gears, cyclists can adjust the resistance and speed of pedaling. Lower gears are easier for uphill climbs, while higher gears are better for flat terrain or downhill. To use them effectively, cyclists should anticipate changes in terrain and shift gears accordingly to maintain a comfortable pedaling cadence.
The difference would be that the 18 speed has one more gear to chose from than the 17 speed. But while 18 speed is easily doable on a bicycle I can't come up with a way to get a bike with 17 speeds - unless you're counting like this:" when I am using this gear I still have 17 others to chose from."
An 18-speed bike has two sets of gears - one in the front and one in the back. The front gears, called chainrings, provide big changes in resistance, while the rear gears, called cogs, offer smaller adjustments. By shifting between these gears, cyclists can find the right resistance for different terrains and speeds. Lower gears are used for uphill climbs, while higher gears are for flat roads or downhill descents. Shifting gears efficiently helps cyclists maintain a comfortable cadence and maximize their pedaling power.
With a thirteen speed you can only "split" the top four. With an eighteen you can "split" all of them, including reverse.
The difference between -18 and 68 is 86.
Anywhere from five to 18. The military M915 has a five speed automatic transmission. Most major fleets run 10 speed transmissions.
Well, darling, the difference between 18 and 32 is 14. It's as simple as that. No need to complicate things, honey. Just subtract 18 from 32 and you've got your answer.
-15
what is difference between 18 & 81 in general knowledge
That bicycle has 18 gears.
44[-18-26 = -44]