Disadvantages of converting cranksets
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Disadvantages of converting cranksets
What are the disadvantages of buying a 2 or 3 ring crankset and converting to a track crankset ?
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Some "track cranks" are really just road doubles that come with a single ring, anyhow.
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If your frame is a conversion, you'll most likely want to put the ring as close as possible to the chainstay - having double/triple crankset, the spider might interfere with the chainstay before the chainring.
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^^I have an old set of Campy Record road cranks that I changed into faux-pistas. I took a file to the inner chainring shoulders so it would clear the chainstay. No worries and more money in my pocket.
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If you're running a 1/8 cog then you'll have to run a 1/8 chain on the 3/32 chain ring which will have some play.
More flex in a 3/32 chainring.
If the whole drive train is 3/32 you will run a wimpy chain and be a wimp.. jk
Well there is less material in the 3/32 chainring so it will wear faster.
But these aren't really big disadvantages.
More flex in a 3/32 chainring.
If the whole drive train is 3/32 you will run a wimpy chain and be a wimp.. jk
Well there is less material in the 3/32 chainring so it will wear faster.
But these aren't really big disadvantages.
#9
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Originally Posted by Igneous Faction
There really aren't any. Unless it's octalink, which I've heard is liable to strip out in fixed street riding.
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Originally Posted by operator
If your frame is a conversion, you'll most likely want to put the ring as close as possible to the chainstay - having double/triple crankset, the spider might interfere with the chainstay before the chainring.
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Originally Posted by blickblocks
Some "track cranks" are really just road doubles that come with a single ring, anyhow.
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Originally Posted by crater
chainline is the only real problem, buts its easily corrected by flipping your spindle
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Originally Posted by BostonFixed
Track cranks in name only, no more "track" than an IRO is a track frame.
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Originally Posted by trons
maybe getting the chainline right, but that shouldn't take much work
to measure the chainline and then calculate bb spindle length or you could spend a grip on five or ten bbs to get it straight
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its more difficult to find road cranks in 165mm
and you have to deal with a non-track standard
bcd which limits your choice of chainrings
...unless you find an older set with a 144bcd.
and you have to deal with a non-track standard
bcd which limits your choice of chainrings
...unless you find an older set with a 144bcd.
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#20
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Originally Posted by subsistbmx@hotm
What are the disadvantages of buying a 2 or 3 ring crankset and converting to a track crankset ?
2. They can be difficult at times to find in 165 if that's what your tires need. I ran 28mm tires on the only conversion I had, so I felt comfortable with 170, but if I'd wanted to use 23s, I would have worried about pedalstrike.
3. (minor) It's probably easier to buy a track crank and matching BB than it is to find the BB that will give your non-track crank the chainline with the ring on the outside (see #1).
Originally Posted by dutret
you can't say you have track cranks.
#21
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Never mind the question marks, people- I think I figured out the poster's motivation.
Advantages?
You'll win the favor of the one or two asstroll busybodies on every cycling forum who won't simply ride their own bikes and be nice about everyone else's- they have to assume the role of Utility Police, making sure that every component on your ride is being used as the factory intended.
I use my running shoes to walk as often as I use them to run; hope that isn't some sort of violation of the Shoe Usage Code.
Advantages?
You'll win the favor of the one or two asstroll busybodies on every cycling forum who won't simply ride their own bikes and be nice about everyone else's- they have to assume the role of Utility Police, making sure that every component on your ride is being used as the factory intended.
I use my running shoes to walk as often as I use them to run; hope that isn't some sort of violation of the Shoe Usage Code.
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Originally Posted by subsistbmx@hotm
What are the disadvantages of buying a 2 or 3 ring crankset and converting to a track crankset ?
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Originally Posted by B17
3. (minor) It's probably easier to buy a track crank and matching BB than it is to find the BB that will give your non-track crank the chainline with the ring on the outside.
Also, a 1/8" 130 bcd track ring fits on a road crankset just fine.
Hard to find a 1/8" 110 bcd ring, though.
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dude I personally like fmf bmx cranks they are 20 bucks and they work fine 110mm bcd
I have converted an old road double on my conversion it is an old sugino gs 144bcd I used a file to shave off the double tabs and a shorter bb to acheive the 42 mm line I also had to releive the chaistay slightly to make everthing clear I have run it like this for about 9 months with no problems
also 130 bcd road cranks are easier to find rings in mulitiple sizes
I have converted an old road double on my conversion it is an old sugino gs 144bcd I used a file to shave off the double tabs and a shorter bb to acheive the 42 mm line I also had to releive the chaistay slightly to make everthing clear I have run it like this for about 9 months with no problems
also 130 bcd road cranks are easier to find rings in mulitiple sizes
Last edited by Retem; 05-16-07 at 03:51 PM.