Chainring BCD Chart
12-31-10 | 04:17 PM
#1
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From: Somewhere Between The Beginning And The End
Chainring BCD Chart
I know most of you know how to measure for proper chainring size, but here is for those who do not. I hope this is useful to someone.
12-31-10 | 04:49 PM
#3
Bianchi Goddess
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From: Shady Pines Retirement Fort Wayne, In
Bikes: Too many to list here check my signature.
that does seem handy. there was a similar post a few weeks ago aswell.
personally I would love to find one of these tools. I inquired to Park about them but it is no longer made. Park did tell me that since all new cranks are 4 bolt (yes 4 bolts on the chainwheels) you didn't need one. a quick look arouind a bike shop the other day I saw only 5 bolt cranks. they must be C&V bikes then LOL
personally I would love to find one of these tools. I inquired to Park about them but it is no longer made. Park did tell me that since all new cranks are 4 bolt (yes 4 bolts on the chainwheels) you didn't need one. a quick look arouind a bike shop the other day I saw only 5 bolt cranks. they must be C&V bikes then LOL
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk
12-31-10 | 07:41 PM
#5
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From: Mountain Brook, AL
1.7x(c-c distance) for 5 bolt cranks
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72 Frejus (for sale), Holdsworth Record (for sale), special CNC & Gitane Interclub / 74 Italvega NR (for sale) / c80 French / 82 Raleigh Intl MkII f&f (for sale)/ 83 Trek 620 (for sale)/ 84 Bruce Gordon Chinook (for sale)/ 85 Ron Cooper / 87 Centurion IM MV (for sale) / 03 Casati Dardo / 08 BF IRO / 09 Dogma FPX / 09 Giant TCX0 / 10 Vassago Fisticuff
01-01-11 | 05:58 AM
#6
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From: Somewhere Between The Beginning And The End
If the person trying to figure out what size chainring they have does not know how to, this may confuse them even further, as this method is never an exact figure. Example------ 1.7 X 76.4 = 129.88 The correct answer is 130 BCD....... Some people rather just see it in black and white rather then have to figure it out on paper.
01-01-11 | 06:40 AM
#8
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From: Somewhere Between The Beginning And The End
Believe it or not, some people would be confused........ A lot of bicycle measurements are confusing enough to some people without giving them something else to figure out. If anyone can use this chart great........ if not that's fine too.
