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Tandem Cycling A bicycle built for two. Want to find out more about this wonderful world of tandems? Check out this forum to talk with other tandem enthusiasts. Captains and stokers welcome!

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Old 06-22-07, 12:31 AM   #1
CactusJackSlade
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55 or larger chainrings for Ultegra?

Hello all,

I find that we spin about 15% slower on our tandem, thus I am wishing for taller gearing. Even with an 11T on the rear (and std 53 on front) we get spun out easily on our group rides (when we are rippin' on the down hills).

Where is a good source for a 55 or even larger chainring for Ultegra 9 spd 130 bcd cranks?

Anyone have a good used one they don't use and want to sell?

Thanks,

CJS

Last edited by CactusJackSlade; 06-22-07 at 04:23 PM.
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Old 06-22-07, 06:58 AM   #2
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I use FSA rings... I currently have a 55-42 rings installed. They are time trial-triathalon rings... Shimano has some avalable also. If your middle ring is a 39 it will also need to be changed [these new shift systems are fussy on sizes].

glenn
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Old 06-22-07, 07:24 AM   #3
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We have a set of FSA rings (130 bcd, 55-44-32) we're not using & will sell. We'll sell all 3 as a set or any individually. Email me if you are interested: sk8erbyker at gmail dot com.
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Old 06-22-07, 07:38 AM   #4
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Our tallest gear is a 54/11. We have pedaled over 45 mph on a downhill. How fast do you want to go?
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Old 06-22-07, 07:49 AM   #5
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700c or 26" wheels?
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Old 06-22-07, 12:32 PM   #6
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Tuck in and coast . . . done 53 mph that way.
In the 'old days' with freewheels, have spun out a 56 x 14.
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Old 06-22-07, 04:21 PM   #7
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Quote:
Originally Posted by oldacura
Our tallest gear is a 54/11. We have pedaled over 45 mph on a downhill. How fast do you want to go?

Faster, FASTER!!!!!

We've gone 56 tuck and coast... down hill and with a 25mph tail wind! hum almost enough for a speeding ticket!
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Old 06-22-07, 04:21 PM   #8
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Originally Posted by Xanti Andia
700c or 26" wheels?

700c
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Old 06-22-07, 04:22 PM   #9
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Quote:
Originally Posted by Fenlason
I use FSA rings... I currently have a 55-42 rings installed. They are time trial-triathalon rings... Shimano has some avalable also. If your middle ring is a 39 it will also need to be changed [these new shift systems are fussy on sizes].

glenn

Are you running a tripple?... or just a double?
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Old 07-01-07, 07:32 AM   #10
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I recommend to look at www.gebhardt.cz
130/5 up to 70 teeth will do!
I'm realy satisfied with the quality: I use it for years.
The don't however sell to individuals so you probably have to find an agent in your country.
Good luck. (Hope you have excellent brakes!)
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Old 07-01-07, 10:30 AM   #11
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Originally Posted by CactusJackSlade
Are you running a tripple?... or just a double?

I am running the 55-42 as a double. I have an 11-34 cass. but want an 11-28.

glenn
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Old 07-01-07, 02:16 PM   #12
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I ment ofcourse : They don't however sell to individuals so you probably have to find an agent in your country.
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Old 07-02-07, 12:17 AM   #13
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sk8erbyker hooked me up with a triple set up... now a 55x11 should be plenty on the top end!
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Old 07-02-07, 02:27 PM   #14
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yes the 55 will help

I have a 56/44 on hand for when I get in shape

glenn
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