home_icon
The World's Largest Online Bike Store
Narrow your results

Categories

Tree Chainrings

View
 
 

Showing 1 items

Sort By
30 Questions : 31 Answers

Q&A for Chainrings category

Components
>
Chainrings

Ask your questions. Share your answers.

 
 
« Back
 
 
Gender: Male
Attitude: Just for Fun
9 months ago
Customer avatar
by
Yamba,AU
Read all my Q&A
 
Please wait while more information about helicopter is loaded.
Additional information about helicopter could not be loaded.
0points
0out of 0found this question helpful.
Was this helpful?helpful0unhelpful0

Answers

Answer: 
The bolt circle (BCD) refers to the distance between the bolt holes on the chainring. This is important as chainrings and cranks can have different bolt spacings.

The way to identify your current crank/chainring BCD is to get a ruler and measure the center to center of two adjacent bolt holes.

45.3mm measured will equal a 64mm BCD the most common for 22t size.

If you need further help with this please email us at

tech@chainreactioncycles.com
9 months ago
Customer avatar
by
Read all my Q&A
 
Please wait while more information about CRCJames is loaded.
Additional information about CRCJames could not be loaded.
+2points
5out of 8found this answer helpful.
Was this helpful?helpful5unhelpful3

Answer: 
In a four hole system such as SRAM the BCD (bolt circle diameter) is simply the distance between the hole centres of two opposite holes and is best measured from the outer edge of one hole to the inner edge of the opposite hole.

Five hole systems such as Shimano are more complicated.

1. Measure the distance between adjacent holes. Call this distance C.

2. Then the BCD is given by: BCD = C/sin(180/N) where N is the number of holes.
Age: 55 to 64
Gender: Male
Attitude: Just for Fun
1 week, 2 days ago
Customer avatar
by
Newcastle-u-Tyne,GB
Read all my Q&A
 
Please wait while more information about skiiter2 is loaded.
Additional information about skiiter2 could not be loaded.
0points
0out of 0found this answer helpful.
Was this helpful?helpful0unhelpful0
I wish to buy steel 36 & 44t chainrings to go with a 10 speed 12-25 cassette.
Is there a standard chainset and cassette.

My Russian is not perfect but I think this is what he is asking. Hope I'm being helpful !!
Age: 45 to 54
Gender: Male
Attitude: Just for Fun
10 months ago
Customer avatar
by
Cheltenham,GB
Read all my Q&A
 
Please wait while more information about ApacheChief is loaded.
Additional information about ApacheChief could not be loaded.
-4points
1out of 6found this question helpful.
Was this helpful?helpful1unhelpful5

Answers

Answer: 
No
Age: 25 to 34
Gender: Male
Attitude: On the up
10 months ago
Customer avatar
by
São Paulo,BR
Read all my Q&A
 
Please wait while more information about DFFREITAS is loaded.
Additional information about DFFREITAS could not be loaded.
0points
0out of 0found this answer helpful.
Was this helpful?helpful0unhelpful0
Age: 55 to 64
Gender: Male
Attitude: Just for Fun
10 months ago
Customer avatar
by
Read all my Q&A
 
Please wait while more information about bosun is loaded.
Additional information about bosun could not be loaded.
0points
0out of 0found this question helpful.
Was this helpful?helpful0unhelpful0

Answers

Answer: 
If the BCD is the same, then the chainring will fit. However; it is advised to use the intended manufacturers chainrings to guarantee spacing and smooth shifting.
10 months ago
Customer avatar
by
Read all my Q&A
 
Please wait while more information about CRCAndyC is loaded.
Additional information about CRCAndyC could not be loaded.
+1point
1out of 1found this answer helpful.
Was this helpful?helpful1unhelpful0
I need a 10 speed XT m785 26 tooth 64 bcd chainring-There does not appear to be this specific chainring available at the mo on the CRC site - but you have a M770 26 t 64 bcd inner chainring which looks the same- but is a 9 speed. Will this chainring work on a 10 speed crankset and with 10 spd chain?

Thanks
Gender: Male
Attitude: Passionate and Obsessive
9 months ago
Customer avatar
by
Rotorua,NZ
Read all my Q&A
 
Please wait while more information about Ants is loaded.
Additional information about Ants could not be loaded.
+5points
5out of 5found this question helpful.
Was this helpful?helpful5unhelpful0

Answers

Answer: 
The tooth profile on a 9-speed chain ring is too wide for a 10-speed chain to run efficiently and is not a recommended combination.

The suggested chain rings below are both 10-speed compatible.
Attitude: On the up
 
Products related to my answer
 
9 months ago
Customer avatar
by
Read all my Q&A
 
Please wait while more information about CRCAndyC is loaded.
Additional information about CRCAndyC could not be loaded.
0points
0out of 0found this answer helpful.
Was this helpful?helpful0unhelpful0
Age: 45 to 54
Gender: Male
Attitude: Passionate and Obsessive
9 months ago
Customer avatar
by
Lurgan,GB
Read all my Q&A
 
Please wait while more information about mickerv is loaded.
Additional information about mickerv could not be loaded.
+2points
2out of 2found this question helpful.
Was this helpful?helpful2unhelpful0

Answers

Answer: 
As the crankset that comes supplied with the Sommet 1 is the Truvativ Descendant 1.1 (with a Bolt Circle Diameter of 104mm); there are many chainring options.
Attitude: On the up
8 months ago
Customer avatar
by
Read all my Q&A
 
Please wait while more information about CRCAndyC is loaded.
Additional information about CRCAndyC could not be loaded.
+1point
1out of 1found this answer helpful.
Was this helpful?helpful1unhelpful0
Has staff answer
 
1 answer

Chainring

Hi,
I need a new 10 speed 38t Chainring for a XT chain set.
Cant's find one.
8 months ago
Customer avatar
by
Holmbush,GB
Read all my Q&A
 
Please wait while more information about Daro is loaded.
Additional information about Daro could not be loaded.
0points
0out of 0found this question helpful.
Was this helpful?helpful0unhelpful0

Answers

Answer: 
The suggested chainring is compatible with Shimano XT cranksets.
Attitude: On the up
 
Products related to my answer
 
8 months ago
Customer avatar
by
Read all my Q&A
 
Please wait while more information about CRCAndyC is loaded.
Additional information about CRCAndyC could not be loaded.
+2points
2out of 2found this answer helpful.
Was this helpful?helpful2unhelpful0
I want to convert my Shimano XT FC-M780 with a 36/11 Cassette from 3x10 to 2x10 setup and want to use a 38/24 front set up. Not sure if I can mix and match Shimano components or would you recommend using offerings from Blackspiere, Hope etc?
Thanks!
Age: 35 to 44
Gender: Male
Attitude: Just for Fun
8 months ago
Customer avatar
by
Read all my Q&A
 
Please wait while more information about Alex1977 is loaded.
Additional information about Alex1977 could not be loaded.
+2points
2out of 2found this question helpful.
Was this helpful?helpful2unhelpful0

Answers

Answer: 
Shimano chainring's can be used; however an upgrade to Blackspire chainring's will complement the new drivetrain setup and are long lasting, hard wearing chainring's.
Attitude: On the up
 
Products related to my answer
 
8 months ago
Customer avatar
by
Read all my Q&A
 
Please wait while more information about CRCAndyC is loaded.
Additional information about CRCAndyC could not be loaded.
+2points
2out of 2found this answer helpful.
Was this helpful?helpful2unhelpful0
Gender: Male
7 months ago
Customer avatar
by
settle,GB
Read all my Q&A
 
Please wait while more information about sideshow is loaded.
Additional information about sideshow could not be loaded.
+1point
1out of 1found this question helpful.
Was this helpful?helpful1unhelpful0

Answers

Answer: 
Sorry for any confusion caused.

There is a small formula for working out a BCD from the actual bolt hole distance dimension (in this case the number you have measured is 45.3mm..

Multiplying this dimension by 1.701 will give you the actual BCD for a 5-bolt chainring.

Use 1.155 for 3-bolt chainrings, 1.414 for 4-bolt chainrings and 2.000 for 6-bolt chainrings.

So by multiplying 45.3mm by 1.141 will give the 64mm BCD required for the 4-bolt chainring required.
Attitude: On the up
7 months ago
Customer avatar
by
Read all my Q&A
 
Please wait while more information about CRCAndyC is loaded.
Additional information about CRCAndyC could not be loaded.
+10points
10out of 10found this answer helpful.
Was this helpful?helpful10unhelpful0
Has staff answer
 
1 answer

types of chainrings

I have got a triple Shimano 52-39-29 set on my bike and want to replace one of them (52 or 29) with a 34 t.
What is the difference between a compact, double or triple chainring and what do you advise me ?
Age: 45 to 54
Gender: Male
Attitude: On the up
6 months ago
Customer avatar
by
TROIS MONTS,FR
Read all my Q&A
 
Please wait while more information about Deltach is loaded.
Additional information about Deltach could not be loaded.
0points
0out of 0found this question helpful.
Was this helpful?helpful0unhelpful0

Answers

Answer: 
Different chainset gear ratios seen on Triple or Double standard or compact chainsets will denote the overall gearing feel of your drivetrain along with the cassette ratio that you are using. Depending on what your riding style/application is will help determine what gearing styles will be best suited for you.
A triple chainset offers you a different range of most gears when compared to a Double chainset etc.
Normal standard gearing chainsets will have chainrings that have a 130mm BCD usually and have larger tooth counts than what you will see on Compact Gearing chainsets that run smaller BCD sizes of 110mm.

You ideally want to get a gearing set up for chainset and cassette that matches how/what you ride.
6 months ago
Customer avatar
by
Read all my Q&A
 
Please wait while more information about CRCMickael is loaded.
Additional information about CRCMickael could not be loaded.
0points
0out of 0found this answer helpful.
Was this helpful?helpful0unhelpful0
Has staff answer
 
1 answer

Small chainring size

İ have Shimano m-411 triple crank 28x38x48, 8speed. İ would like to fit a 26t inner ring, would a 9sp ring be ok, or could you recommend one?.
Age: 65 or over
Gender: Male
Attitude: On the up
6 months ago
Customer avatar
by
Read all my Q&A
 
Please wait while more information about bigman is loaded.
Additional information about bigman could not be loaded.
0points
0out of 0found this question helpful.
Was this helpful?helpful0unhelpful0

Answers

Answer: 
The suggested chainring below is designed for use with 8/9-speed drivetrains and is compatible with the M411 crankset.
Attitude: On the up
 
Products related to my answer
 
5 months, 3 weeks ago
Customer avatar
by
Read all my Q&A
 
Please wait while more information about CRCAndyC is loaded.
Additional information about CRCAndyC could not be loaded.
+1point
1out of 1found this answer helpful.
Was this helpful?helpful1unhelpful0
2 next>>
2 next>>