TMBRA - Rider Board

 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

1x10 Drivetrain

 
Post new topic   Reply to topic    TMBRA - Rider Board Forum Index -> Tech Questions
View previous topic :: View next topic  
Author Message
myocastor
New


Joined: 30 Jul 2012
Posts: 22

PostPosted: Fri Mar 20, 2015 7:58 am GMT +0000    Post subject: 1x10 Drivetrain Reply with quote

After seeing the increase in people riding 1X10 and the fact that I haven't used my granny gear up front in ages I'm looking to make the conversion to 1X10.

Right now I'm running a 34 up front and looking at keeping the 34 tooth up front. My question is what I should run in the back? 40T or 44T?

Also looking for recommendations for derailleur. Right now I'm running SRAM X9. Should I keep this and run a chain keeper or switch to a derailleur with a clutch?

Thanks in advance for any tips.
Brad
Back to top
View user's profile Send private message
Pegboy
New


Joined: 18 Feb 2011
Posts: 22

PostPosted: Sun Mar 22, 2015 9:31 am GMT +0000    Post subject: Reply with quote

Several people might chime in, but. In my opinion,

1. Short cage dérailleur 10 speed with clutch is great.

2. Narrow wide front chainring to alleviate running a chain guide. Been running a narrow wide for 1 year and haven't dropped a chain yet.

3. 11-36 cassette in the rear should suffice. I'm weak and can still make most if not all climbs in the series. (Except camp eagle)

Hope this helps.

Rich
Back to top
View user's profile Send private message
myocastor
New


Joined: 30 Jul 2012
Posts: 22

PostPosted: Mon Mar 23, 2015 1:09 am GMT +0000    Post subject: Reply with quote

thanks Rich,
I ordered a Oneup Narrow/wide 34T chain ring, and a 42T expander with 16T replacement for the back. I'm going to try running without the 42 first and then add it later if I need it. I agree the last time I used my 24T was the first climb at Camp Eagle.
Brad
Back to top
View user's profile Send private message
RickWetherald
100+


Joined: 05 Sep 2008
Posts: 187
Location: Logan, UT

PostPosted: Mon Mar 23, 2015 10:09 pm GMT +0000    Post subject: Reply with quote

If you're looking at short cage, make sure it can handle a 36t cog. None of the short cages will swing an 11-42 spread, if that's the route you want to go.

If you want to run a 42 and you have a Shimano drivetrain, you'll need the RAD cage from OneUp. Without it, your drivetrain will function, but shifting will be very sluggish in the mid-smaller cogs. If you have Sram, you won't have a problem with the stock mid or long cage.

Like others have said, definitely go with a narrow-wide ring and clutch derailleur for a guide-less setup. So much smoother, quieter, and simpler.

If you're worried about the low end but are trying to avoid shelling out the extra $$ for a 42t cog and associated cage, I would seriously examine your 34t chainring choice. Contrary to what many think, 32 or even 30 is enough for MTB racing. Almost the entire time I lived in TX, I ran a single 32t chainring with an 11-34 or 11-36 cassette. I even ran that combo in Excruciation Exam with all that road. Now, living in Utah, all of my race bikes have a 30t ring on the front. I ran into trouble once, at the end of a race on a ~4 mile long section of false flat downhill dirt road with a very strong tailwind. That's what it takes to run out of gear in a real race situation with a 30x11. With the exception of Terlingua, Texas doesn't have any courses with speeds like that.
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    TMBRA - Rider Board Forum Index -> Tech Questions All times are GMT - 6 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group