Going dual chainrings
ddraver
Posts: 26,708
Hi all
Thinking of going for two rings as I don't need to granny ring in here at all..However, I still want some bail out gears so was thinking of going for something like 26 and 38 (which is approximately what SRAM use on their dual cranksets) but is this too much of a jump?
Was thinking of Specialities TA chainrings, as they re reasonably well priced over here, but I'm split between 32 and 34 cassette too
Cheers
DaveK
Thinking of going for two rings as I don't need to granny ring in here at all..However, I still want some bail out gears so was thinking of going for something like 26 and 38 (which is approximately what SRAM use on their dual cranksets) but is this too much of a jump?
Was thinking of Specialities TA chainrings, as they re reasonably well priced over here, but I'm split between 32 and 34 cassette too
Cheers
DaveK
We're in danger of confusing passion with incompetence
- @ddraver
- @ddraver
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Comments
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Before you do change, have a think about how you use your gears: do you stay in your 32 ring a lot? Because if you do, your new combo would have the 32 right in the middle of your ratios. It could actually mean you end up changing more at the front than before, but without the benefits of your granny gear, or super tall gears.0
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Yes, will work mechanically with pretty much any front derailer.
Are you using the largest ring much?0 -
Only on road sections and then only because i suddenly remember it's there, other wise I'd stay in middle. 1 x 9 would be perfect for 90% of the off road riding but having something slightly bigger for the road and a bit smaller for the last climb of the day (as much as you can have a climb in Holland) would be perfect...We're in danger of confusing passion with incompetence
- @ddraver0 -
If you really aren't using the very lowest gears I'd go for a 42/28, with 11-36 cassette.0
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I run 2x9 27/42 and 11-32 and i love it.
a few people have said its to big a jump between front rings but it works for me i do use a road front mech which is designed for 16t jumps rather than a mtb which is designed for 14t.
i used to use the middle ring alot now Ive just man'd up and us the big ring mainly0 -
What about the shimano sox 665 dual w/bash 36/22 for £87 on cfc?Rockin': Specialized Rockhopper 2008
Rollin': Orange 5 Custom
http://www.bikeradar.com/forum/viewtopic.php?p=17023937#17023937
Previous:
Specialized Enduro Expert 2004
Boardman HT Pro 2010
Kona Stuff0 -
I run 26/39 with a 10 speed 11-36 cassette and have just ordered some Specialities TA Chinook 26/40 rings for on my anthem again with a 10 speed 11-36 cassette.0
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You can get deore 9spd in 12-36 flavour - lose one end, gain at the other.0
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I run a 26-36 upfront and 11-34 back 9 speed and it suits me great. I only miss the big ring on the road or fire roads but my solution is to stay off them as much as possible. Will probably move up to a 38 or more when/if I get fitter.0
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You are good for 14t jumps usually.
Though that 12-36 has a lower range than an 11-34 ;-).0 -
16, won't work then - hmm was wondering about 26-42. What is this road derailleur that your man speaks of - will say a Rival front mech work with a 9 spd SRAM shifter - or even will a new school 2 x 10 derailleur work?
The Tech manuals say a max 22th difference for the 9 spds but presumably that's not all at once. They also talk about 12th "Top-middle-min capacity" but I can't work out what that is...We're in danger of confusing passion with incompetence
- @ddraver0 -
They are not designed to work together, that is for sure: different cable pulls.
Though in practice some can be gotten to work, especially with double chainrings.
I wouldn't recommend it.0 -
I used 32/44, 30/42 and 28/40 9 speed with an 11-34 block, found the slightly smaller rings suited me better, even on the road 40/11 is a pretty big gear, i doubt you'd want much bigger.0
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Yeah, I was riding with my current 44th ring in the fourth from bottom cog (17?) along the bike paths (which are roads here) and with a tail wind i was on the point of spinning out so I won't be doing much pedalling down road hills, but it's probably not common enough to be a problem...We're in danger of confusing passion with incompetence
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Well a 40/11 is a higher gear than 44/17, by some margin...0
