Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby wachtourak on Thu 25/Nov/10 3:04pm

9 speed Dura-Ace 7700 cassette - how many cogs on the alloy carrier?
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby shmoodiver on Thu 25/Nov/10 3:36pm

two carriers with two on each
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby danose on Thu 25/Nov/10 4:13pm

shmoodiver wrote:two carriers with two on each


only if it's an 11t top cog (11-21 and 11-23) - cassettes with a 12t top cog (12-21, 12-23, 12-25 and 12-27) get 3 cogs on the biggest carrier and 2 on the other
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby shmoodiver on Thu 25/Nov/10 4:21pm

oh yus, tis too
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby wachtourak on Thu 25/Nov/10 4:28pm

Chur bolez

Sounds good, getting a 12-27 for the DH bike probably. Got 12-27 Ultegra on there at the moment that I got fo' free but it's only got 3 on a carrier, prefer moar so it doesn't gark my freehub body too much.

Got a KMC X9-SL Ti chain to go with the new cassette too, blang blang yo
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby WayneG on Thu 25/Nov/10 8:00pm

Here is a photo of my seat and post, the post has two screws, one each side to adjust it. But is too high in the nose for me. The bike has a 73deg seat angle if that's any help.
P1050328.JPG
P1050329.JPG
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby Astoria Paranoia on Thu 25/Nov/10 8:03pm

Can it not slide forward along the curved guide to level it out?
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby WayneG on Thu 25/Nov/10 8:15pm

No I can get it to point higher but no lower, that's why I'm hoping someone can give me an idea where to start to solve the problem.
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby musta on Thu 25/Nov/10 8:45pm

Unscrew the bolts and see if it can pivot, most seatposts can.
If not, new seatpost time. That is a massive design fault!
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby Oli on Thu 25/Nov/10 8:47pm

That seat post still has heaps of adjustment left to get the nose down - yore doin it rong. :D
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby Trail on Thu 25/Nov/10 8:54pm

That seatpost is designed to tilt forward enough for most seats. http://www.ritcheylogic.com/media/File/ ... _07_V2.pdf

I would start by positioning the clamp in the middle of the seat rails rather than right at the front, then with the clamping bolts still reasonably loose I would give the seat a good smack with your hand to see if you can get the clamp to tilt enough to clamp the seat level.

Having the seat that far back on the rails puts a lot of leverage through the rail that the seat and seat post clamp were never designed for. It is possible to bend the seat rails or the seat post clamp by having the seat that far back in the clamp.
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby WayneG on Thu 25/Nov/10 9:10pm

Just got it to adjust at last. One of the curved bits was not moving, so it kept ending up on that angle. Now it can adjust like it should. Thanks for all your help.
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby great uncle bulgaria on Thu 25/Nov/10 10:21pm

whats the go with tube/tyre talc.
Is it worth using? (vitt open corsas, latex tubes) where do I get some - motorbike shop Ok?, (motorbike shop close to work-I assume it is the same)

thanks
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby Astoria Paranoia on Thu 25/Nov/10 10:25pm

You can get talc from a plain old supermarket ;)
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