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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 11-17-09, 12:07 AM   #1
alex812s
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Sugino Messenger Arms+75 Chainring

Hey does the Sugino Messenger Crank Arms would work with the Sugino 75 Chainring?
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Old 11-17-09, 12:07 AM   #2
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or with the FSA Pro Track Chainring?
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Old 11-17-09, 12:12 AM   #3
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it won't. There is a measurement when it comes to cranks and chainrings called BCD (bolt circle diameter). Basically, if you draw a line through the center of each chainring bolt and connect it so that it makes a circle, this measurement is the diameter of that circle.

Messenger crankarms have a BCD of 130mm. Sugino 75 cranks and chainrings have a BCD measurement of 144mm. 144mm is the standard BCD for track cranks/'rings. You would be wise to go ahead and get something w/ 144mm BCD
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Old 11-17-09, 12:17 AM   #4
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it won't. There is a measurement when it comes to cranks and chainrings called BCD (bolt circle diameter). Basically, if you draw a line through the center of each chainring bolt and connect it so that it makes a circle, this measurement is the diameter of that circle.

Messenger crankarms have a BCD of 130mm. Sugino 75 cranks and chainrings have a BCD measurement of 144mm. 144mm is the standard BCD for track cranks/'rings. You would be wise to go ahead and get something w/ 144mm BCD
k then. do u have any suggestions when it comes to reasonably priced ($90 or so) 144bcd crank arms?
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Old 11-17-09, 12:22 AM   #5
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saving your money!!!!..............and lurk craigslist for deals or save 170 bucks and get omniums from bikes island or save more and get sugino 75's ect SAVE SAVE SAVE!!!!
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Old 11-17-09, 12:48 AM   #6
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saving your money!!!!..............and lurk craigslist for deals or save 170 bucks and get omniums from bikes island or save more and get sugino 75's ect SAVE SAVE SAVE!!!!
well i found a 75 chainring for about $80
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Old 11-17-09, 01:06 AM   #7
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Andel makes cranks for like $100 that are 144BCD. You are still gonna have to get a BB. I think the best deal in 144BCD cranks is the Omnium crankset from BikeIsland. For $165, you get cranks, chainring, and BB.
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Old 11-17-09, 09:12 AM   #8
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at that price, i could get andel arms and an fsa chainring for 145
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Old 11-17-09, 09:17 AM   #9
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get a ta chainring.
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Old 11-17-09, 09:31 AM   #10
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at that price, i could get andel arms and an fsa chainring for 145
no i guess it comes complete. any 144 crank arms only?
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Old 11-17-09, 09:48 AM   #11
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Go Ominum ftw.
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Old 11-17-09, 12:13 PM   #12
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all the 144BCD crankarms are expensive. Honestly, the cheapest option is to get an Andel for 100 bucks and then a BB for $20, but I say just spend the extra $45 and get Omniums.

I didn't mean to make you think you HAVE to get 144BCD. There are lots of cheap fixed gear cranks out there (pake, eighthinch, origin8, fsa vero), but all of them are 130BCD. I'm sure you would be fine w/ those, but if you ever plan on having a nice crank setup you are going to have to move to 144BCD anyways. Besides, most of those setups are gonna cost you like $80-$100 by the time you include BB.
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Old 11-18-09, 06:58 AM   #13
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wait for deals.. sugino 75s often go for really cheap. recently some GTB's got sold off from our local velodrome.. they came stock with s75 crank, chainring, and bb. the bikes were $350 complete. plus i see sugino 75 cranks + ring for ~$100 quite a bit. so i would just wait around.
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Old 11-18-09, 07:02 AM   #14
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What's wrong with Sugino Messengers? They are fine!!!

unless you are this dude then you probably don't need them.

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Old 11-18-09, 02:02 PM   #15
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get a ta chainring.
I hear that TA's have roundness issues. Yay? Nay?
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Old 11-18-09, 02:09 PM   #16
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their range does go from premium to somewhat affordable, but ive never heard of that being an issue.
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Old 11-18-09, 02:24 PM   #17
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wait for deals.. sugino 75s often go for really cheap. recently some GTB's got sold off from our local velodrome.. they came stock with s75 crank, chainring, and bb. the bikes were $350 complete. plus i see sugino 75 cranks + ring for ~$100 quite a bit. so i would just wait around.
WHAT!?!?

goddammit.
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Old 11-24-09, 09:38 PM   #18
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WHAT!?!?

goddammit.
track racers are better judges of value
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