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RADBMX.CO.UK  |  Technical & Reference Section  |  Tech and Restoration  |  BCD on a chain ring
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Author Topic: BCD on a chain ring  (Read 568 times)

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Offline Oldboyburner

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BCD on a chain ring
« on: April 17, 2014, 10:18 PM »
Can anyone tell me what it would be on a sugino 44 t
110?
OBB

Offline stidds

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Re: BCD on a chain ring
« Reply #1 on: April 17, 2014, 10:41 PM »
I am pretty sure all Sugino is 110 BCD

Offline Oldboyburner

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Re: BCD on a chain ring
« Reply #2 on: April 17, 2014, 10:47 PM »
Cheers mate
OBB

Offline Dark Diggler

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Re: BCD on a chain ring
« Reply #3 on: April 17, 2014, 10:48 PM »
All of them except the 130 BCD ones :daumenhoch:
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Offline stidds

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Re: BCD on a chain ring
« Reply #4 on: April 17, 2014, 11:06 PM »
Just measure it to be sure, it is dead easy to find out the BCD...



Bolt Circle Diameter   Hole to Hole
Diameter                 Cntr to Cntr


5 Bolt Chainrings

56mm         32.9mm
58mm         34.3mm
94mm         55.4mm
74mm          43.5mm
110mm         64.7mm
130mm         76.4mm
135mm          79.5mm
144mm          84.6mm

4 Bolt Chainrings

58mm          41.0mm
64mm          45.3mm
68mm          48.1mm
104mm          73.6mm
112mm          79.2mm

Offline bobbbbsy

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Re: BCD on a chain ring
« Reply #5 on: April 18, 2014, 12:20 AM »
pretty good that sean - or

 sheldon says - Measuring BCD: This 110 mm BCD ring measures 64.7 mm center-to-center.

Multiplying this dimension by 1.7 will give you the actual BCD for a 5 bolt chainring.

Use 1.4 for 4 bolt chainrings

Offline That Swan Guy

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Re: BCD on a chain ring
« Reply #6 on: April 18, 2014, 08:19 AM »
Aren't Sugino rings both?
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Offline Jaan

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Re: BCD on a chain ring
« Reply #7 on: April 18, 2014, 08:24 AM »
No, typically they're 110

Offline snoopy72

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Re: BCD on a chain ring
« Reply #8 on: April 18, 2014, 08:45 AM »
Takagi 130bcd
Sugino 110bcd
Pro / tuf neck  110/130
Takagi MX 120bcd
PPP  110/130bcd
Shimano 130bcd

RADBMX.CO.UK  |  Technical & Reference Section  |  Tech and Restoration  |  BCD on a chain ring
 

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