130 BCD crank w/ 52/36 chainrings?
Moderator: robbosmans
Hoping someone can shed some light on this for me.
Elsewhere in the forum I've seen it said that 38T is the smallest inner ring you can do on a 130BCD crank. But I came across this from Chain Reaction which allows you to select a 130 BCD crank with semi-compact (52/36) rings. Is this right, or is it just an error on CR's part? http://www.chainreactioncycles.com/us/en/campagnolo-athena-11-speed-groupset/rp-prod139946
(see image below)
I have an old SRAM Force crank on my road bike running 53/39 and I'd love to go down to 52/36 but be able to keep my current crank arms. I know the ad is for Campy but that doesn't seem like it should impact how small you can go on the inner ring. Searching for a 52/36 130BCD set on eBay doesn't yield any results. Any ideas?
Elsewhere in the forum I've seen it said that 38T is the smallest inner ring you can do on a 130BCD crank. But I came across this from Chain Reaction which allows you to select a 130 BCD crank with semi-compact (52/36) rings. Is this right, or is it just an error on CR's part? http://www.chainreactioncycles.com/us/en/campagnolo-athena-11-speed-groupset/rp-prod139946
(see image below)
I have an old SRAM Force crank on my road bike running 53/39 and I'd love to go down to 52/36 but be able to keep my current crank arms. I know the ad is for Campy but that doesn't seem like it should impact how small you can go on the inner ring. Searching for a 52/36 130BCD set on eBay doesn't yield any results. Any ideas?
Visit starbike.com Online Retailer for HighEnd cycling components
Great Prices ✓ Broad Selection ✓ Worldwide Delivery ✓
www.starbike.com
the smallest chain ring for 130BCD mentioned was 37T but it was never materialized.
i am still riding 53/39, my next bike will definitely has 50/34 though ... LOL
Another option is run a bigger cassette, but that might run into derailleur issue and likely to require a new rear derailleur for anything bigger than 28T
i am still riding 53/39, my next bike will definitely has 50/34 though ... LOL
Another option is run a bigger cassette, but that might run into derailleur issue and likely to require a new rear derailleur for anything bigger than 28T
To my awareness, this is the only 36T in 130BCD and it's integrated into the spider.
“I always find it amazing that a material can actually sell a product when it’s really the engineering that creates and dictates how well that material will behave or perform.” — Chuck Teixeira
you can make 52/36 double using 130/74 triple crankset and 36T in 74mm BCD
Stronglight Dural 5083 Silver 74mm Shimano Triple Inner Chainring - 36T (265010)
Stronglight Zircal 7075 Silver 74mm Triple Inner Chainring - 36T (261015)
Stronglight Dural 5083 Silver 74mm Shimano Triple Inner Chainring - 36T (265010)
Stronglight Zircal 7075 Silver 74mm Triple Inner Chainring - 36T (261015)
'
deek wrote:Not sure if it's easy to actually purchase, but assuming you have the Force cranks with a removable spider, you could just buy a 110BCD spider and keep the arms.
Nowadays this would be feasible, but my cranks are older and the arms & spider are one piece.
New Force cranks
My version (mine are not compact obviously)
-
- Posts: 616
- Joined: Sun Nov 13, 2011 6:00 am
Rotor make a 53t 110BCD chain ring paired to a 38t inner ring.
Sent from my Pixel XL using Tapatalk
Sent from my Pixel XL using Tapatalk
Visit starbike.com Online Retailer for HighEnd cycling components
Great Prices ✓ Broad Selection ✓ Worldwide Delivery ✓
www.starbike.com
A separate 36T chainring on a 130BCD isn't possible basically because the teeth/chain interferes with the chainring bolts.
When the need for chainring bolts is eliminated, e.g. by integrating the them with the chainring and spider, then there is just enough clearance without having to resort to non-standard (read: smaller) chainring bolts.
When the need for chainring bolts is eliminated, e.g. by integrating the them with the chainring and spider, then there is just enough clearance without having to resort to non-standard (read: smaller) chainring bolts.
“I always find it amazing that a material can actually sell a product when it’s really the engineering that creates and dictates how well that material will behave or perform.” — Chuck Teixeira