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from 39-52 to 36-46(11 posts)

from 39-52 to 36-46syart
Apr 24, 2003 4:32 AM
last night i changed the crankset from an 600 shimano 39/52 to a 36/46 RSX shimano. I run a 11-25 at the back. I want to spin rather than smash. On the next weekend I am going to try a very hilly route in the Andes, so I was looking for a inexpensive way to ease the traction. I found the RSX in almost new condition for 10 US $ and thus far felt pretty good in my ride to work this morning .

What are your thoughts regarding de RSX crankset, the 36/46 setup with a 11-25 rd for a cicloturist?
36/46 or 34/48 a great way to goRay Sachs
Apr 24, 2003 5:11 AM
for those of us who aren't strong enough to climb well in racing gears. I have 110 bcd cranks (same as the RSX) on most of my bikes and run 34/48 rings on most, with a 24/36/46 triple on one). In the back, I'll run anything from a 12/27 to a 12/34. Great way to go if you like lower gears.

-Ray
36/46 or 34/48 a great way to gosyart
Apr 24, 2003 6:38 AM
I was thinking to go from the 25 to the 27 or even to 34, but I don`t know what problems I might encounter, for example, chain size and rd. What are yor thoughts about it?
36/46 or 34/48 a great way to goRay Sachs
Apr 25, 2003 6:48 AM
Most modern rear derailures will probably handle a 12-27 without any problems. Going to a 34 will require a MTB type rear derailure though - a road derailure won't shift onto the big cog. Probably need a longer chain too.

-Ray
The Rivendell solution--works great for me.cory
Apr 24, 2003 11:59 AM
I set up my Atlantis w/46-36-26 because Rivendell recommended it, and I'm amazed how much I like it. I'm a lousy climber, so it might not be as good for mountain goats, but most people I see on road bikes are on the 39t ring most of the time anyway. I probably spend twice as much time in the big ring as I did before, and I've never run out of gears (anytime I can turn a 53-11, I'll be coasting).
re: from 39-52 to 36-46frankamo
Apr 24, 2003 6:13 AM
I'm currently running 48/38/24 up front. 12-25 in the back. Let's me keep RPM's over 80 everywhere I ride, and saves my knees.
Front Deraileur?LC
Apr 24, 2003 7:51 AM
If you don't have a clamp on front der then it might not be able to be mounted low enough to work with those small rings.

As long as you have the 11 cog, you should have a high enough gear and it never hurts to have more low gears. I like my RSX cranks for touring along with a 11-28! Just about any rear der can handle that combination too, so you don't need a long cage or any special rear deraileur.
Solutions to braze-on front derailer?Psalm 147-10_11
Apr 24, 2003 8:09 AM
A buddy is building up a climbing bike and is looking to use smaller chainrings up front, but can't get the front derailer down low enough. He has a Trek 5900 (braze-on). Does anybody know of any solutions to this problem?
A buddy is building up a climbing bike and is looking to use smaller chainrings up front, but can't get the front derailer down low enough. He has a Trek 5900 (braze-on). Does anybody know of any solutions to this problem?Psalm 147-10_11
Apr 24, 2003 8:09 AM
approved
That was weird (nm)Psalm 147-10_11
Apr 24, 2003 8:17 AM
re: from 39-52 to 36-46Steve Bailey
Apr 24, 2003 6:08 AM
Whatever works for you. That's my thought.

I run a 24/36/50 (110BCD crank) with a 12-21 9 spd. cogset on my Heron "Go anywhere" bike (30 to 112 gear inch range) and a 38/54 with a 13-23 9 spd. (45 to 112 GI's) on my racer.

I live on flat Long Island and like tight clusters for the majority of my rides, but keep the Heron with the range for trips upstate and New England

It's what works for me.

Steve B.