How do i fit a 7, 8 or 9 speed mega cog (cassette) to a bicycle wheel, any special tools needed ?

Answer 1

There's a special tool for removing/tightening the retention ring that holds the cassette in place, and be aware that the tool you need varies depending on the manufacturer of your drive train. Campagnolo cassettes require a slightly different tool from Shimano, as I understand it, though the only cassette I've ever replaced was a Shimano. Just make sure that your hub and freewheel are compatible with the cassette and, as one of the other posters suggested, check your shifters carefully and adjust them as needed.

Answer 2

sure you need to use a 9-speed derailleur on an 8-speed cassette. All Shimano derailleurs use the comparable pull ratio, that's 2:a million. So pulling an inch of chain strikes the derailleur a nil.5 inch. because 9-speed and eight-speed cassettes have distinctive distances between gears, the shifters for each will pull distinctive quantities of cable between detents. So the shifters, in particular the rear shifter, is the area that could tournament the cassette type.

Answer 3

You will need a special tool to remove the old cassette so it would be cheaper to go to the shop you bought the cassette off and get them to do it. You could try a big hammer but I don't recommend it

Answer 4

Yeah, what they said about the tool.
Keep in mind that the 7 speed is narrower than the 9 and may need a little spacer.
I'd go by the shop like the other guy said. It'll be cheaper than the too and you'll have it on correctly. Once it's on, you'll likely not need to take it off very often.

Answer 5

Yea you need a special tool,also your shifters may need to be renewed to handle the extra gears plus your rear mech.
good luck.
p.s. don't forget to add extra chain link's

Answer 6

i think special tools are needed take to a bike shop it wont be that expencive