Hi chaps and chapesses, I have wondered for quite sometime now if it's possible to upgrade from 8 to 10/11 gears. It's a Sora derailleur and obviously an 8 speed cassette.
All is factory standard really.
Every thing in life is possible
But I think in this case you may as well get a new bike, for what the conversion is going to cost
Somebody with more detailed knowledge will no doubt come along soon.
I'm sure someone will correct me if I'm wrong but I believe 10-speed cassettes will fit on the same freehub body as 8-speed cassettes. As well as new shifters, you'll also need a new chain, chainrings and front and rear derailleurs.
11-speed is trickier/more expensive - you'll need a new rear wheel (or hub, at least).
Yes, of course you 'can' though the cost might be prohibitive depending on your budget.
You'll need
new shifters (or if you're more than a bit mad and want to save some pennies and accept that it'll look terrible, just the one for the rear)
new chain; quick link
new cassette
You'll likely need
a rear derailleur
new cables inner [& outer] while you're there
bar tape (if you do the cables)
You may need
a rear wheel that'll take the chosen speed cassette; most are 8/10 but I think 11 has a different size hub and if so I'd stick with 10 speed unless your wheel is worn and is due to be replaced
Tools
Allen key set
Cable cutters
Pliers for crimping cable end
Cassette removal tool
Large ring spanner for cassette tool
Electrical tape
Chain breaker
All very easy but it'll cost a fair bit - the shifters being the largest cost. Go for 105 or equivalent for the best price/performance ratio.
Cheers guys it is appreciated.
I was wondering that's all, and if it was cheap enough maybe do it. I certainly not spending £400 doing it, after all I also have a Cad10.
Don't know yet Vickster I've only been out 3 times, not fallen off though.
The main thing you'd achieve is smaller gaps between gears, at the cost of thinner, less durable, more expensive components. Do you find the steps between gears £400+ongoing replacements worth of annoying after only three rides?
I'm biased as my usual bike has roughly 36% steps between gears IIRC.
Easy solution is get some 10-spd shifters(i.e. old 105) and use them with the current mechs of which the rear will need it's limit and b screws adjusting to take the new cassette; plus a 10-spd cassette and some 10 spd wheels, if you are really lucky the wheels 'may' be 10 spd compatible.Would also be an idea to get an in-line adjuster for the front mech and of course fresh cables.
Expensive solution is new 105 11-spd gears from Merlin;
Also can get this, might also need a new bottom bracket to replace yours, which I'm assuming is a standard threaded one. If not keep your existing cranks. Full tiagra setup, so 10 speed, shouldn't need to change wheelset or anything.
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