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Can you convert a 6 speed rear cassette to 8 or 9 speed?
I am buying a used Recumbent bike that is currently a 18 speed (3 front and 6 rear gear wheels). I understand that I would have to change the Cassette and the Derailleur but do I need to change the chain also?
And the biggest question is do you think it will fit in the rear frame mount for the back wheel?
Extra info: this bike manufacturer is no longer in business so I can not ask them. The bike is from the 1990's.
8 Answers
- MtrlpqbikerLv 79 years agoFavorite Answer
If it is 6 speed, it is about 99% certain that it isn't a cassette. Although there were some 6 speed cassette hubs manufactured 30 years ago, they wouldn't be compatible with current systems. Your bike probably has a freewheel. Converting to 8 or 9 speed means changing the rear wheel, buying a cassette, and changing shifters, chain, derailleurs, and crankset. You would also have to have the frame rear dropout spacing changed for your new wheel. All this would probably cost about the same as buying a new bike. If you want a bike with 8 or 9 speed shifting, don't buy this one, it would be cheaper to buy a new bike
- Anonymous6 years ago
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RE:
Can you convert a 6 speed rear cassette to 8 or 9 speed?
I am buying a used Recumbent bike that is currently a 18 speed (3 front and 6 rear gear wheels). I understand that I would have to change the Cassette and the Derailleur but do I need to change the chain also?
And the biggest question is do you think it will fit in the rear frame mount for...
Source(s): convert 6 speed rear cassette 8 9 speed: https://suggests.im/e15/can-you-convert-a-6-speed-... - bikeworksLv 79 years ago
You have a freewheel, not a cassette.
A change would require a new rear wheel, new cassette, new front and rear derailleurs, new chain, new chainrings/crank, new cassette (of course), and new shifters. You will probably also need to have the frame reset for the wider rear hub and if it is made of aluminum it is not possible.
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- Max CruiseLv 79 years ago
Suspect not. Depends on the rear drop out spacing. Older bikes uses a 120 mm and 126 mm inside dropout spacing. An 8 or 9 speed may need a 130 mm spacing.
Good Luck
- Anonymous9 years ago
why not just leave it 6?
you give no reason for the change
typically you can;t change without a lot of work
the frame spacing is wider for 8/9 speed
which is the answer to this:"And the biggest question is do you think it will fit in the rear frame mount for the back wheel?"
no i do not think it will fit
wle
- John MLv 79 years ago
Keep it the way it is unless you want to buy a new wheel with a freehub, cassette, shifter, and new chain. You will need to bend the dropout so the new wheel fits. If the frame is aluminum I wouldn't try it.
- Anonymous9 years ago
Change the whole wheel and the chain, or simply add 3 links to the chain for the larger gears.
