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how "difficult" would it be going from a 42 tooth chainring to a 46 tooth?

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how "difficult" would it be going from a 42 tooth chainring to a 46 tooth?

Old 09-30-09, 08:48 PM
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how "difficult" would it be going from a 42 tooth chainring to a 46 tooth?

would this be a difficult transition 42T to a 46T?
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Old 09-30-09, 08:55 PM
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you'll notice a difference at first but get used to it if you ride any decent amount. Eventually you'll enjoy not having to spin so much when you ride
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Old 09-30-09, 08:58 PM
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I'll just assume you've never done a chainring swap before? It's pretty easy if you know what you're doing and have tools.

You need to remove the chain first. After that, remove the crank + chainring from your BB (if you've got a square tapered BB, you'll probably need that great Park tool that we all love). Once you've removed that, unscrew the crank bolts to separate the chainring from the crank.

Now just put the new chainring on the crank, and put it all back on the bike. You might need to add some length to your chain, just don't make it too loose.
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Old 09-30-09, 09:07 PM
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alright cool. in the spring i swapped my rear cog (16T) for a 15T. if i add 4 more teeth to the front would i expect the resistance to be 4 times that of when i went from 15T to 15T?
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Old 09-30-09, 09:28 PM
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Originally Posted by Dahm
I'll just assume you've never done a chainring swap before? It's pretty easy if you know what you're doing and have tools.

You need to remove the chain first. After that, remove the crank + chainring from your BB (if you've got a square tapered BB, you'll probably need that great Park tool that we all love). Once you've removed that, unscrew the crank bolts to separate the chainring from the crank.

Now just put the new chainring on the crank, and put it all back on the bike. You might need to add some length to your chain, just don't make it too loose.
you don't need to remove the crank to take off the chainring. unless it's the granny ring of a triple.
Just unscrew the chainring bolts, it's easier to remove the chainring from a crank than it is to solve a level 1 disentanglement puzzle.


Originally Posted by subopolois
alright cool. in the spring i swapped my rear cog (16T) for a 15T. if i add 4 more teeth to the front would i expect the resistance to be 4 times that of when i went from 15T to 15T?
no...
do the math here.
https://sheldonbrown.com/gears/
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Old 09-30-09, 09:42 PM
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alright ive done the calculation. but what do the numbers 5.7 and 6.2 mean (those are what i got). i dont like reading, yes i am a lazy bastard
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Old 09-30-09, 09:50 PM
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50cm more movement per one full rotation of crank
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Old 09-30-09, 10:49 PM
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You will be moving up, like, 7 GI.
I do not think it will be a difficult transition, unless your legs are not conditioned.
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Old 10-01-09, 02:10 PM
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That's about equivalent to changing your cog to one tooth smaller, give or take 1.5 GI. In my opinion, it's not to large of an increase. I plan on doing this in the future, when I get my spin down to perfection.
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Old 10-01-09, 02:42 PM
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Originally Posted by Dahm
You need to remove the chain first. After that, remove the crank + chainring from your BB (if you've got a square tapered BB, you'll probably need that great Park tool that we all love). Once you've removed that, unscrew the crank bolts to separate the chainring from the crank.
You work a lot harder at jobs like this than I do. If it was my bike, I'd just unbolt the chainring and slide it off over the pedal
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Old 10-01-09, 02:45 PM
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Originally Posted by Retro Grouch
You work a lot harder at jobs like this than I do. If it was my bike, I'd just unbolt the chainring and slide it off over the pedal
truth.
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Old 10-01-09, 05:26 PM
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42/15 is fine ratio, you don't even spin that much. The 46/15 is way too high in my opinion.
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Old 10-01-09, 06:56 PM
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Your legs will get ripped off!!!!

(I was going to link a photo off a google search "legs ripped off", but after seeing a bunch of gore photos I decided I had best not.)
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Old 10-01-09, 07:26 PM
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80GI, 24mph @ 100rpm

knees will explode
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Old 10-02-09, 03:10 AM
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Why would you change gearing to make it more difficult? It should be easier.
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