moving from 24 to 20 speed

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HardRockJonty
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Joined: Tue Sep 18, 2012 00:34 am

moving from 24 to 20 speed

Postby HardRockJonty » Thu Nov 08, 2012 12:24 pm

hi

Im looking at upgrading bike, the current chainset is a 3 ring 22/32/42 with an 8 speed cassette - 11 - 32

The new bike has a 42x27T chainset and a 10 speed 11-36

On paper my lowest gearing on the new bike is not as low as the old bike - do you think Ill notice the difference??

Thanks

Chunkers1980
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Joined: Tue Feb 10, 2009 14:12 pm

Re: moving from 24 to 20 speed

Postby Chunkers1980 » Thu Nov 08, 2012 12:26 pm

Depends how sensitive you are and what hills you meet.

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The Rookie
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Joined: Thu Apr 30, 2009 09:29 am

Re: moving from 24 to 20 speed

Postby The Rookie » Thu Nov 08, 2012 13:47 pm

Do you use the lowest gear you have available now? If not you can't miss it!

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cooldad
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Re: moving from 24 to 20 speed

Postby cooldad » Thu Nov 08, 2012 14:08 pm

Yes, you will.
Whether it's a problem is a different question.
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HardRockJonty
Posts: 4
Joined: Tue Sep 18, 2012 00:34 am

Re: moving from 24 to 20 speed

Postby HardRockJonty » Thu Nov 08, 2012 15:57 pm

Chaps

Thanks - youre right.

I use the granny ring now (possibly due to the bike being poor fit) - nothing at all of course to do with my lack of leg power or cardio endurance!!

So losing the lowest ratio gears is going to take the fun out of going up hill.....

Looking at other 20 speeders, the 42/27 is an odd combo with the 11-36....I understand a "normal" is 24/36....

Its kind of helped me decide which bike to go for.....

Ta

Chunkers1980
Posts: 7909
Joined: Tue Feb 10, 2009 14:12 pm

Re: moving from 24 to 20 speed

Postby Chunkers1980 » Thu Nov 08, 2012 16:01 pm

You're basing your bike buying decsion on gear ratios?

Just factor in about £60 if you choose that bike to fit new cranks.

GrenW
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Joined: Thu Aug 25, 2011 06:52 am

Re: moving from 24 to 20 speed

Postby GrenW » Thu Nov 08, 2012 16:32 pm

All you will lose in effect will be the very lowest single gear - smallest ring up front/largest out back. Your new lowest gear will be similar to using the second biggest ring out back.

Will you really miss the one gear that often?

HardRockJonty
Posts: 4
Joined: Tue Sep 18, 2012 00:34 am

Re: moving from 24 to 20 speed

Postby HardRockJonty » Thu Nov 08, 2012 19:02 pm

Gear ratios not the only consideration... I was pondering this over lunch and wondered what the real world impact would be...

Yep I use the lowest gear now, but infrequently. Just like to have it there I guess.


I'm going from an old hardtail with poor suspension to a shortlist of a Boardman FS team (the 2x10) or a 26er Specialized cambr comp (2012 model). comparing specs on paper trying to make a choice not having ridden either yet...


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