MTBs have had direct cable routing for ages and it seems the best option, can't understand why road rear mechs still have the old fashioned loop of cable. Any reason?
Bike Forum
Why do road bikes still have looped-in cables to the rear mech?
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Posted 4 months ago #
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If it ain't broke, there's no need to fix it.
Posted 4 months ago # -
Ages? That will be about 3 years of ages (for Shimano). The question is, what do you perceive as the disadvantage of having a loop of cable on a road mech?
Posted 4 months ago # -
do SRAM mechs still have a loop ?
MASSIVE aero disadvantage, I'd have thought
Posted 4 months ago # -
With Dura-ace Di2 and Ultegra Ui2 electronic shifting road bike mech technology is way ahead of MTBs now.
Posted 4 months ago # -
doesn't really matter on a road bikes, cables don't fill with mud and don't wear out very quickly.
Posted 4 months ago # -
MASSIVE aero disadvantage, I'd have thought
Oh, I'm sure a little loop of 5mm wide cable makes a HUGE difference
Posted 4 months ago # -
'cos it routed under bb-chainstay,not tt-seatstay.
besides,you can run a rollamajig that way.Posted 4 months ago # -
Some one enlighten me please. Didn't think my bike was that old but I still have a bit of outer between the last cable stop and the mech. Without knowing whats meant I can only assume that the Op means that road bikes have a longer loop than MTB's Can't say that its that obvious.Maybe MTB mechs sit differently. Also maybe MTB cables run down the seat stays more.
Posted 4 months ago # -
If any sort of direction change is needed then a bigger curver is smoother so maybe its because road bike can and MTBs can't because of the percieved need to be tidy. Still gueesing that I am on about the right thing.
Posted 4 months ago # -
Thinking about it - road mechs still need the adjuster at the back, because how else would the mechanic lean out of the team car and assist the rider back to the pack?
Posted 4 months ago # -
maybe something to do with the short road derailluer having a different mech pull ratio thing compared to mtb ders, and the fact that the cables arent going to get so gummed up with mud...?
Posted 4 months ago # -
I think you have a very good point ,less friction is always going to be desirable , seems like manufacturers may have missed a trick .
Posted 4 months ago # -
because mtb derailluers have evolved of late to be more out of tge way to minimize rock strike/stick damage and that has meant a change to how the cable attaches..
the normal method works fine for road bikes no need to change.
Posted 4 months ago # -
Surely it's the direction of pull, on road bikes it's horizontal. On MTBs it's almost vertical.
I assume the mech would need more gubbins to operate without the loop.Anyway a well turned out loop is a sign of a good mechanic
Posted 4 months ago # -
Lots of overthinking this. It's there because nobody has brought out a shadow road mech yet, and barrel adjusters are handy.
Posted 4 months ago # -
are you saying I'm getting no benefit from using a super-narrow run of outer to my mech, aracer ?
I've fitted aerofoil sections and everything
Posted 4 months ago # -
Is it not because Shadow style mechs are ugly as sin? Plus, doesn't the design require that a shadow mech hangs lower? Double ugly!
Posted 4 months ago #
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