Thinking about running 1x10 for youth races

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emcardle
Posts: 82
Joined: Mon Mar 30, 2015 5:39 pm

by emcardle

I'm thinking about running 1x10 for youth races.
36x11 would give me the gear rollout I need. I have Sram Red 2013 with a 110bcd crankset.
I have a few questions about running this. How would I set up the single chainring on a Sram red crankset? I don't want to spend much money.
What would the chain line be like with this? Would I need a chain guide?

Thanks

by Weenie


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pushstart
Posts: 461
Joined: Sat Jun 16, 2012 3:12 am

by pushstart

This doesn't answer specifics of your question, but I recently converted my commuter/CX bike to SRAM 1x10. I replaced my 36/46 rings with a 46t X-SYNC ring. It is an outer ring, but teeth are offset inboard to help center chainline. If you are really just gonna run a 36t you can choose whatever narrow/wide you want and mount on inside for best chainline. OTOH with a 36t you might be spending more time on the outside of the cassette? Some frames might accommodate a 42t as inner ring too. (I am assuming here that the 110 bcd SRAM Red spider is not a proprietary design.)

I also installed a mtb clutch derailleur, since I wanted to use an 11-36 cassette (11-36 + 46t is same range as 11-28 + 36t/46t rings), but I rode around on my 11-28 + Rival derailleur for awhile. I suspect for road riding the clutch derailleur is not really necessary to keep chain on? Narrow/wide ring did great for the bit of road riding I did. No chain retension device was needed. For riding in single track, the clutch derailleur is really nice (quiet, no dropped chains), though.

On the whole I am very happy with the setup, though for strictly road riding I think the tighter gear spacing is worth the "hassle" of the front shifting apparatus.

emcardle
Posts: 82
Joined: Mon Mar 30, 2015 5:39 pm

by emcardle

Thanks for that, the reason I am thinking about this is because the low gears we have to use (usually 52x16) dont really warrant 2 rings. On the crankset would i need spacers for the chainring when i take one off?

pushstart
Posts: 461
Joined: Sat Jun 16, 2012 3:12 am

by pushstart

Yes, if you wanted to use the same bolts, you would need spacers. The SRAM X-SYNC ring comes with the spacers, which is nice.

You could do 1x10 without a narrow/wide, but suspect you would have to deal with dropped chains unless you use a chain guide.

Pottsy
Posts: 134
Joined: Mon Dec 08, 2014 11:54 am

by Pottsy

I recently set this up for a junior.
DA Di2 I increased the spring tension in the RD & fitted a praxis 40t narrow wide & put a K-Edge cross catcher on for extra protection.
Set up with a junior cassette as well.

He loved it.

Image


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victorduraace
Posts: 230
Joined: Thu Jul 14, 2011 10:10 pm

by victorduraace

Pottsy, more pics please
this bike looks sweet <3

Pottsy
Posts: 134
Joined: Mon Dec 08, 2014 11:54 am

by Pottsy

Full bike with legal race wheels

Image

Heat shrink the cables. Keep it tidy.

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MRM
Posts: 532
Joined: Sun Jun 14, 2015 8:15 pm

by MRM

Terrific!

Junior always sounds like some kid riding around on a S-Works Nibali frame with lightweight wheels. :lol:

pushstart
Posts: 461
Joined: Sat Jun 16, 2012 3:12 am

by pushstart

That is an inspiration [for my kids' bikes when they get older]!

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LouisN
Posts: 3510
Joined: Mon Feb 19, 2007 3:44 am
Location: Canada

by LouisN

What's the maximum length per pedal revolution allowed ?

Louis :)

emcardle
Posts: 82
Joined: Mon Mar 30, 2015 5:39 pm

by emcardle

Im racing in holland in a while and the rollout there is 7 meters here in ireland its 6.94

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LouisN
Posts: 3510
Joined: Mon Feb 19, 2007 3:44 am
Location: Canada

by LouisN

ok. It shold come around 45 X 14 then...

I know running standard cassettes is lighter than a junior one (especially since this is WW ;), although a few people here have made very light junior cassettes), but the difference in gearing is smaller running a bigger chainring in front like a 45T and a junior 14-25 cassette.

I'd choose 45 X 14 over 36 X 11 personnally.

Louis :)

by Weenie


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