Double or triple chainset musings

FluffyChicken · Apr 12, 2012

Two things
1) 26(f)-34(r) is lower than many a retro setup which would have been 26(f)-28(r)
so you're quids in there

2) What do you gain from using the double vs the triple ?

You could always alter your ring config to give more choice
20/30/40 ?
though I know CD 5 arm does this, not sure of 4 arm ?
you get even lower (or can run a closer ratio rear) and top end is the same. and you gain a middle ground.

Though give I regularly run on my 48T rings and find the 44T lacking on my other setups, it wouldn't be for me.

Dead Rats · Apr 12, 2012

22 is smallest on 4 bolt I think

Andy B · Apr 12, 2012

Dead Rats":25s442bv said:
watch out for chainstay clearance with something as big as a 39 in the middle :?:

Don't think that'll be an issue as the double set up uses the outer two positions & not the granny ring mounting position.

It has a 47.5mm chainline to being the two rings a little closer in to the BB to give a better spread of usable gears

It's a 4 bolt system, smallest ring is a 26t in the inner position, which is as FC points out a lower ratio then quite a few retro set ups

Might go up to a 40t outer, but seen as with my 1x9 set up a 32t chainring was enough to keep me going up to 30mph on the road I reckon anything bigger will be a waste on me, I hardly ever use the 'big' ring on triple set ups (44 or 42t)

I reckon a double it is, a 26t small ring & a 39t outer ring

Dead Rats · Apr 12, 2012

Andy B":2b2quntj said:
Dead Rats":2b2quntj said:

watch out for chainstay clearance with something as big as a 39 in the middle :?:

Click to expand...

Don't think that'll be an issue as the double set up uses the outer two positions & not the granny ring mounting position.

It has a 47.5mm chainline to being the two rings a little closer in to the BB to give a better spread of usable gears

It's a 4 bolt system, smallest ring is a 26t in the inner position, which is as FC points out a lower ratio then quite a few retro set ups

Might go up to a 40t outer, but seen as with my 1x9 set up a 32t chainring was enough to keep me going up to 30mph on the road I reckon anything bigger will be a waste on me, I hardly ever use the 'big' ring on triple set ups (44 or 42t)

I reckon a double it is, a 26t small ring & a 39t outer ring

indeed, sorry I thought you were gonna use existing triple cranks

I was looking to go 38/24 on my inbred using M760 cranks so it's been on my mind

Blackstar · Oct 26, 2012

FluffyChicken":69beyafo said:
... What do you gain from using the double vs the triple ?
...

Bit simpler.

Pedaling felt a bit easier with no big ring.

Depends on how you like to ride .

Won't gain anything if you like grannying up hills then hammering down them

poweredbypies · Oct 26, 2012

2 + bash is my prefered set up, ok dont use the granny much but nice to have just in case.

Blackstar · Oct 29, 2012

Andy B":1tqtfabp said:
I'm currently deciding on which type of chainset to use on my bike
...
With my triple set ups I do like the lowest ratio gears (cos I'm lazy & unfit) when climbing but hardly ever use the highest ratios when descending

You could get away with just taking off the big un.

Double or triple chainset musings

FluffyChicken

Dead Rats

Andy B

Dead Rats

Blackstar

Retro Guru

poweredbypies

Old School Grand Master

Blackstar

Retro Guru

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