Gearing for Ventoux

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OP
OP
YellowV2

YellowV2

Guru
Location
Kent
Chain length is not an issue. As we are talking Campag it’s not cheap so nothing is pennies! £276 for the crankset.
 
OP
OP
YellowV2

YellowV2

Guru
Location
Kent
Do you have a smart turbo and an app like Zwift that has Ventoux, such as Zwift's Ven Top?

Given the odd virtual climb I've done of this monster, I suspect it's going to take you approx 2+ hours at endurance pace.

Any local hills of similar ~8% gradient you can climb and descend for 2+ hours and see how you do with current gearing?

I can't be certain, but I think this Ven Top ride was 100% trainer difficulty with 34/50 rings and 11-34 when I was approx 78-80Kg back in Xmas '20, so ~2.5W/Kg and a z2 endurance effort.

Yes to all the above and plan to do just that, don’t mind 2+ hours.
 

Pblakeney

Über Member
My take having done a lot of high mountains on Campag with both 34x29 & 34x32 is that you’d barely notice the difference.
34x34 should be perfectly adequate, and you’ll probably only be looking for easier at the 15%+ mark.
 

Spiderweb

Not So Special One
Location
North Yorkshire
Have you considered just fitting a 32 inner in place of the 34?
I'm sure it is outside of the recommended teeth difference, but in my experience when I swapped a 39 on a 53/39 for a 36, it behaves perfectly - that is DA 9100 in case that makes any difference.

How much is an entire chainset?
The inner ring on it's own is probably relative pennies - my genuine DA inner was £36 iirc.
Arguably, for speed and simplicity, it would be easier to just swap out the entire crankset, although you'd need to swap pedals as well I suppose.

Do you know yet whether you can have a suitable chain length that would accommodate both setups, and or will you also have to tinker with the FD height, relative to the largest cog I wonder?

It sounds like the OP has a 110 BCD chainset, I thought the smallest inner chainring available for this was 33 teeth?
Can you get a 32 teeth for this set up?
 

Dan Lotus

Veteran
It sounds like the OP has a 110 BCD chainset, I thought the smallest inner chainring available for this was 33 teeth?
Can you get a 32 teeth for this set up?

Ah perhaps that is a possibility, hadn't considered BCD, and have to admit to not being familiar with Campagnolo at all really.
 

Legs

usually riding on Zwift or up steep hills...
Location
Staffordshire
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