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Dual middle chainring 34t or 36t ?

keen

Monkey
Mar 30, 2003
355
0
Currently running a 22 / 32 dual ring up front. The combo is good for 80% of my riding but I seem to run out of gear on longer faster descents. I don't know if I should go 22/34 or 22/36 ? Which and why ? Thanks.
 

Sghost

Turbo Monkey
Jul 13, 2008
1,038
0
NY
36.

because 34 is only 2 teeth more than 32, which is bad for 20% of your riding.
 

syadasti

i heart mac
Apr 15, 2002
12,690
290
VT
remember, e13 has odd number rings available.

Ive been running a 35t for a while and have no complaints

:thumb:
Did you read the title? e13 guiderings are for single ring applications - no ramps or pins for shifting.

36T is my vote. I've been running them forever and started out with 26/38T but eventually settled on 24/36T, you lose gears you'd rarely or never use with a traditional triple MTB gearing.
 

KavuRider

Turbo Monkey
Jan 30, 2006
2,565
4
CT
I was running a 24/36 with an 11-32 cassette on my CoilAir. Then I realized the point of a granny gear is to go up retardedly steep climbs - so I put an 11-34 cassette on and now I even I'm going to go down to a 22T granny.
I'm in the 36 most of the time, except when I need that really, really low gear.

I'm rambling but my vote is 22/36.

Yes or Hammerschmidt.
 
May 5, 2010
7
0
I think that it's alot to do with fitness myself... So, how fit are you?

15 stone of fit muscle will pound a 38t no problem but 9 stone needs a 34t. If you are of average size, weight & fitness, go 36 i guess.
 

4xBoy

Turbo Monkey
Jun 20, 2006
7,055
2,912
Minneapolis
Did you read the title? e13 guiderings are for single ring applications - no ramps or pins for shifting.

36T is my vote. I've been running them forever and started out with 26/38T but eventually settled on 24/36T, you lose gears you'd rarely or never use with a traditional triple MTB gearing.
The E-13 has no ramps but I ran a 22/35 for awhile, actually shifts alright, not lightning quick but it does work.
 

buildyourown

Turbo Monkey
Feb 9, 2004
4,832
0
South Seattle
Crank length is also a factor.
For the past year, I have been running a 36t single with 170mm cranks. I just switched to a 36/22 with 175mm cranks. The 175 made a huge difference. Much easier to turn circles now. The cranks get easy to push down, but you don't really loose the top end assuming you have the leg speed.

My vote is 36t. It feels good with a 11x34 cassette and is natural on rolling terrain.
 

Daz

Chimp
Mar 5, 2008
36
0
Shimano makes a 38T XT ring for 4 bolt cranks (XT goes on 26/38/48 combos for trekking bikes).

I believe the ultimate AM set up will settle out at a 24/38 chainring combo with the 11-36 or 12-36 cassette combo soon to be available or already are on 9 and 10 speed cassettes. Most of the high and low you need for most trails in a simple format. The kicker is is going to be can you mate up a dual ring chain guide system like the MRP Long Range Patrol with the new 10 speed crank combos coming out....I think there will be problems. The 9 speed cranks should be fine with a guide on the large ring position and using the 24/38 in the small/middle positions.