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Old September 10th 19, 01:45 AM posted to rec.bicycles.tech
Sir Ridesalot
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Default Problems with upper gears

On Monday, 9 September 2019 12:04:07 UTC-4, AK wrote:
On Monday, September 9, 2019 at 1:38:53 AM UTC-5, Chalo wrote:
6 speed freewheel and 8 speed shifter/derailleur are never compatible. 7 and 8 speed are compatible with Campagnolo parts, but for the love of God don't do that.

7 speed Shimano pattern freewheel or cassette and 8 speed Shimano pattern shifting are not compatible, but can be coerced to kinda-sorta work poorly together. There's a 0.2mm difference in gear intervals that stacks up to 1.2mm discrepancy across the extremes. It's likely to make noise.


Thanks for the info. So what do I need?

Andy


What you need to shift a SIX speed INDEX cassette or freewheel is a SIX speed INDEX shifter.

Was your original shifter (the one that was replaced) a SIX speed INDEX shifter? If it was a FRICTION shifter then the 8-speed shifter should work IF it has a FRICTION MODE on it besides index.

Cheers
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