MTB crank on a road bike - 46/30t 46/28t anyone?
Moderator: robbosmans
Hello weenies...
A friend is getting ready for the Taiwan KOM climb and is worried of burning out and having to walk the bike the 27% grades at the end as well as not finishing within the 7h time limit. He likes to spin and just dislikes being out of the saddle.
He's on a wilier running campy veloce 10s with a compact crank 50/34 and a 12-30t cassette. The derailleur is already the longest available thats compatible (medium) and looks to be at the limit on the 30t cog. Not much space to fit even a 32t which isn't available from campy (campy freehub).
To the point. I saw on youtube you can fit an mtb crank on there. The problem is the chainring size. Double chainring cranks are usually maxed at 42/28t and we would like a 46/28 or 46/30. Do you have an idea which common crank can be fitted with such rings and could work on a 10s road bike?
He has a clamp on front derailleur that can be lowered appropriately. I've been looking to get an mtb crank in an appropriate bcd and switch a chainring if needed. What do you think?
Thank you for reading!
/a
A friend is getting ready for the Taiwan KOM climb and is worried of burning out and having to walk the bike the 27% grades at the end as well as not finishing within the 7h time limit. He likes to spin and just dislikes being out of the saddle.
He's on a wilier running campy veloce 10s with a compact crank 50/34 and a 12-30t cassette. The derailleur is already the longest available thats compatible (medium) and looks to be at the limit on the 30t cog. Not much space to fit even a 32t which isn't available from campy (campy freehub).
To the point. I saw on youtube you can fit an mtb crank on there. The problem is the chainring size. Double chainring cranks are usually maxed at 42/28t and we would like a 46/28 or 46/30. Do you have an idea which common crank can be fitted with such rings and could work on a 10s road bike?
He has a clamp on front derailleur that can be lowered appropriately. I've been looking to get an mtb crank in an appropriate bcd and switch a chainring if needed. What do you think?
Thank you for reading!
/a
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If you really want to fit an MTB crank (higher Q factor but most ppl don't notice) you can get *all* ring sizes from Specialites TA.
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I replaced a Shimano compact with a 46/30 FSA Omega (2017) on my wife's road bike. Only gotcha is that you have to replace the bottom bracket since the FSA has a 19mm spindle, which also implies that there are not a lot of bottom bracket options (only the ones from FSA themselves). They also have a pricier version (SL-K adventure).
Overall we're very happy with it. Much better solution than having to fit a cassette with large gaps between gears.
Overall we're very happy with it. Much better solution than having to fit a cassette with large gaps between gears.
What do you think would happen if you get for example a 3 ring crank like 48/36/24t and take out the 36, put the 48 on it's place and swap out the little one for a 30t (64bcd).
An outer ring being used as a middle ring. How would that work?
/a
An outer ring being used as a middle ring. How would that work?
/a
alcatraz wrote:What do you think would happen if you get for example a 3 ring crank like 48/36/24t and take out the 36, put the 48 on it's place and swap out the little one for a 30t (64bcd).
An outer ring being used as a middle ring. How would that work?
/a
I did this on my old CX, riding 26/40 and 30/40 with a FSA Gossamer triple and TA rings. Shifting was *excellent*.
Because of the positive experience, I just did the same for my wife's new (all-)road bike, she now has an FSA SL-K carbon triple crank with the 26/40 combo and an 11-32 in the back.
- bikerjulio
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I had a Campy 10-speed cross bike that was used on trails. Ended up with a Deore crankset and needed a Deore FD as well. The stock FD will foul the chainstay before being low enough. Everything worked fine.
There's sometimes a buggy.
How many drivers does a buggy have?
One.
So let's just say I'm drivin' this buggy...
and if you fix your attitude you can ride along with me.
http://www.youtube.com/watch?v=GekiIMh4ZkM
How many drivers does a buggy have?
One.
So let's just say I'm drivin' this buggy...
and if you fix your attitude you can ride along with me.
http://www.youtube.com/watch?v=GekiIMh4ZkM
Marin wrote:alcatraz wrote:What do you think would happen if you get for example a 3 ring crank like 48/36/24t and take out the 36, put the 48 on it's place and swap out the little one for a 30t (64bcd).
An outer ring being used as a middle ring. How would that work?
/a
I did this on my old CX, riding 26/40 and 30/40 with a FSA Gossamer triple and TA rings. Shifting was *excellent*.
Because of the positive experience, I just did the same for my wife's new (all-)road bike, she now has an FSA SL-K carbon triple crank with the 26/40 combo and an 11-32 in the back.
What was source for 40T chainring?
Was it chainring for big or middle position originally?
Last edited by ooo on Tue Jul 11, 2017 2:33 pm, edited 2 times in total.
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ooo wrote:What was source for 40T chainring?
Was it chainring for big or middle position originally?
Specialites TA. Middle ring.
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On Rotor crankset, it's possible to change the spider for the MTB one, 110/74 (or 60, Rotor proprietary). You keep the road Q factor, have the possibility to have less than 30t on the inner.
jeanjacques wrote:On Rotor crankset, it's possible to change the spider for the MTB one, 110/74 (or 60, Rotor proprietary). You keep the road Q factor, have the possibility to have less than 30t on the inner.
Didn't realize they were interchangeable, good to know as I primarily run Rotor cranks due to them offering shorter lengths. On a similar vein TA Specialites cranks allow you to do the same, although they are square taper.
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