7spd to 8spd
SteveR_100Milers
Posts: 5,987
Is it posible to replace a 7spd block on a 105 hub with an 8 spd block?
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Is your wheel 126mm or 130mm OLN (over lock nuts width) and is it a screw on block or a cassette. If 130 and a cassette then probaly yes. If either of the others then almost certainly not. This for Shimano. Campag may differ. Usefull info here.
http://www.sheldonbrown.com/k7.html0 -
Thanks for info, don't know as its an ebay item - I need a replacement winter wheel as cheaply as possible and there are a couple with 7 spd for sale. My bike has got sora 8 speed.0
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if its a cassette then you'll need a new freehub, which is wider, and re-dish your wheel to accommodate the wider cassette
not really worth it to be honest, although I have done it in the past
better off buying a 8/9 speed wheel IMO for the money/hassle you spendFacts are meaningless, you can use facts to prove anything that's remotely true! - Homer0 -
The 8 spd is not a cassette its a screw on block, otherwise I would need a different hub! Thats why I want toi take an old hub (7spd) that has a screw on block and see if I can fit an 8 spd block on. I didnt think 8 and 9 spd were compatible....one is a cassette, the other isnt, or have I got that wrong?0
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It's a boggo standard 2006 Trek alpha 1000 SL with Sora shifters 8 spd on some horrible cheapo rims...I assumed its screw on but i havent checked....0
