MTB mechs ona road bike - will it work?
YeehaaMcgee
Posts: 5,740
So, I'm rather dissapointed with the crappy quality of roadie mechs, after only 260 or so miles the front mech has pretty much seized up, and the weak spring on the rear mech means I constantly have to adjust the indexing since the slighest cable drag messes it up. Seriously, it's like riding a bike from the dawn of indexed gears again.
The ones on the mountain bikes are as good as bulletproof, in all weather, all conditions, and covered in virtually any amount of mud.
So, I was thinking, since the roadie is a 10 speed, with a dual compact chainset, are there any MTB mechs that I could use?
Currently has Shimano Tiagra shifters and mechs.
The ones on the mountain bikes are as good as bulletproof, in all weather, all conditions, and covered in virtually any amount of mud.
So, I was thinking, since the roadie is a 10 speed, with a dual compact chainset, are there any MTB mechs that I could use?
Currently has Shimano Tiagra shifters and mechs.
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Suggest you've probably been unlucky though, the Tiagra rear mech on my winter bike is now 3 years old, I've cleaned the bike twice in that time, and it's spot on.
Front mechs will be problematic, they're a very slightly different cable pull, and the radius of the cage is far larger. Suggest buying a new/better front mech is a better way to go.
My understanding is that Tiagra is roughly equivalent to Deore, is that about right? I am shocked at how bad th eshifting performance has been. I expected a little cable settling, but not this much.
105 front mech would be the next upgrade point. Then Ultegra and Dura-ace
No. On Shimano the cable pull is the same for 9 speed MTB and 10 speed road, as the cassette is the same width it's fine. It's only 10 speed MTB which is unique.
On SRAM their 9 speed stuff is different to 10 speed road or MTB - which are interchangeable.
Tiagra = Deore yes, then as above: 105, Ultegra, Dura Ace. 105 or Ultegra are noticeably nicer IMO, and front mechs needn't be expensive, may be worth getting an Ultegra one, that does seem bad though!
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Are you sure it's not the cables incidentally? 260 miles really is terrible, that's 2 weeks of moderate riding. The (admittedly Dura Ace) one on my Madone is nearly 9 years old and I've never touched it.
The front mech has seized - it actually requires considerable effort to move it inwards (towards the smaller ring) even with my hands.
It's only about 2 and a half weeks old. The LBS told me to bring it in 6 weeks after buying it to get a routine service, re-check spoke tension etc. But at this rate I can't see it being rideable in that time!
And, because it's that one hill where it sees use, I've often forgotten about it until the last minute when I think "OH BOLLOCKS!"
Interesting abotu the 9-speed Shimano stuff working fine. I'm surprised that all the Shimano road mechs still have that odd loop of cable, and haven't adopted the Sachs style shadow arrangement.
Seems odd about your front mech, as it's summer. I'd give it a good soak of WD 40 over night and take of and clean and put some proper lube on the pivot points.
Parktools :?:SheldonBrown
Mainly because of cable routing on road frames, having the loop means it works with anything, more awkward if you need a straight entry. That and roadies are immensely adverse to any change!
Can't get short cage Shadow mechs (other than Saint?), only GS (mid) and SGS (long).
As an aside, it'll almost certainly be a 50t ring unless you've changed it.
As what's actually available, not much call for short mechs in xc mtbs.
Nick - you can hear my brakes squal from there?
Actually, whilst I've had the bike, it's not been too bad. The weather was cataclysmic last week, so I did't ride after Tuesday.
Which is what's bothering me. I've just been out to give it a clean with some WD40, the only thing I have to hand at work (It's a slow day at work thankfully, after the stressful chaos earlier in the week), and it's now a bit more free moving, however, there's not much crud on it, certainly not enough to warrant concern.
There's more censored on an MTB mech within the first 30 feet or so of an off road ride, and I've luckilly never had one of those seize on me until they're rusted to all hell and back.
Most strange.
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Dumbfukk moron.
Dumbass Lola.
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Tiagra is roughly equivalent to a censored , in my limited experience of having one set and then replacing it, for similar reasons of crappy shifting.
105 and upwards I have had no problem with, several current sets of 105 kit in our house are now 6 or 7 years and 1000's of miles old and still work very nicely.
Iron Horse Ojiki
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on the brake front
i found that bbb techstop pads....(can be found at ribble) slow me up a treat....miles better than the standard pads. just saying.
hope the issue gets sorted quick for you
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Brakes are fine, they just needed some filing to get some toe-in.
Indexing isn't really the problem with the rear mech, it's just friction making it slow to move. It eventually gets there, but it's nowhere near the machine-gun changes of Shimano XT.
Isn't flight deck a cycle computer thing? What's that got to do with Tiagra?