Author Topic: Elliptical Chainrings. Thoughts?  (Read 24315 times)

voodoo320

Re: Elliptical Chainrings. Thoughts?
« Reply #30 on: November 23, 2017, 02:47:37 AM »
I been eyeing this! Anybody know about this?

bxcc

Re: Elliptical Chainrings. Thoughts?
« Reply #31 on: December 04, 2017, 07:36:19 PM »
I have never seen that one before. It doesn't appear to have the narrow wide tooth profile that most 1x rings have now. Not sure if that's a deal breaker or not but it's something to consider.

carbonazza

Re: Elliptical Chainrings. Thoughts?
« Reply #32 on: December 05, 2017, 07:15:23 AM »
... It doesn't appear to have the narrow wide tooth profile that most 1x rings have now...
Isn't this key to keep the chain on the ring without a chainguide ?

exzos

Re: Elliptical Chainrings. Thoughts?
« Reply #33 on: December 05, 2017, 07:41:26 AM »
... It doesn't appear to have the narrow wide tooth profile that most 1x rings have now...
Isn't this key to keep the chain on the ring without a chainguide ?
Yes.
It is very important if you are running a 1x

bxcc

Re: Elliptical Chainrings. Thoughts?
« Reply #34 on: December 05, 2017, 07:58:06 AM »
... It doesn't appear to have the narrow wide tooth profile that most 1x rings have now...
Isn't this key to keep the chain on the ring without a chainguide ?
Yes.
It is very important if you are running a 1x

That was my impression too. But since I’ve never run anything but narrow wide rings on my 1x setups, I’m not sure how bad it would be with a uniform tooth thickness. I would assume that if the teeth are long enough, it wouldn’t be as bad as using a ramped ring intended for 2x or 3x setups.

lRaphl

Re: Elliptical Chainrings. Thoughts?
« Reply #35 on: December 06, 2017, 09:52:25 AM »
Shimano doesn't use narrow-wide profiles on their 1x chainrings and it works.

acedeuce802

Re: Elliptical Chainrings. Thoughts?
« Reply #36 on: December 06, 2017, 01:45:50 PM »
Shimano doesn't use narrow-wide profiles on their 1x chainrings and it works.

Shimano uses a tooth profile that's more square to help keep the chain on.  The chain ring should have some sort of retention, whether it's narrow-wide, square tooth like Shimano, or a chain guide.  A standard tooth profile is designed for shifting, which is not ideal for 1x.

tripleDot

Re: Elliptical Chainrings. Thoughts?
« Reply #37 on: December 07, 2017, 01:30:57 AM »
Agree with Aceduece, in lieu of narrow-wide, Shimano's 1x chainrings have a squareish profile, so it helps secure your chain. Also, I believe that using the derailleur with clutch also helps keep the chain from poping out.
July 2020 - Custom Waltly Ti 29er
Nov 2018 - Custom Waltly Ti Gravel
Apr 2018 - CS-496 29x3.0 - stripped
Feb 2018 - CS-RB01 (SS Road)
Sep 2016 - CS-RB01 (road sold)
Jun 2016 - Chinese CF XC - stripped
Mar 2016 - Haro Projekt (sold)
Feb 2008 - Jamis Durango 29 (sold)
Mar 2001 - Scott Scale (sold)

voodoo320

Re: Elliptical Chainrings. Thoughts?
« Reply #38 on: December 07, 2017, 08:39:55 PM »
Finally bought the elliptical chainring. First impression is good. It has a 3 settings. 1st is for sprint. 2nd is normal and 3rd is for climbing. Still experimenting which setting is the best. As for the tooth clearance.... chain is always in place.

carbonazza

Re: Elliptical Chainrings. Thoughts?
« Reply #39 on: December 08, 2017, 04:22:33 AM »
Do you feel the difference between the 3 positions when pedalling ?

voodoo320

Re: Elliptical Chainrings. Thoughts?
« Reply #40 on: December 08, 2017, 09:05:29 PM »
Yes you can feel the differences. Tried the normal and change it to sprint. I felt the rotation more effective than normal. Very satisfied with the product.

Here is the link where I bought it. Beware!!! It is in Chinese but we are in Chinertown.  ;) ;) ;)

https://item.taobao.com/item.htm?spm=a230r.1.14.16.58d9f097ulpBYv&id=45067009823&ns=1&abbucket=9#detail


tripleDot

July 2020 - Custom Waltly Ti 29er
Nov 2018 - Custom Waltly Ti Gravel
Apr 2018 - CS-496 29x3.0 - stripped
Feb 2018 - CS-RB01 (SS Road)
Sep 2016 - CS-RB01 (road sold)
Jun 2016 - Chinese CF XC - stripped
Mar 2016 - Haro Projekt (sold)
Feb 2008 - Jamis Durango 29 (sold)
Mar 2001 - Scott Scale (sold)

carbonazza

Re: Elliptical Chainrings. Thoughts?
« Reply #42 on: December 09, 2017, 12:42:46 AM »
The bottom of the Taobao text and the eBay link point to a narrow/wide version of that ring.

voodoo320

Re: Elliptical Chainrings. Thoughts?
« Reply #43 on: December 11, 2017, 11:54:19 PM »
yeah taobao is lot cheaper than ebay.  ;)

steven

Re: Elliptical Chainrings. Thoughts?
« Reply #44 on: April 23, 2018, 03:14:58 PM »
I recently started using an elliptical chainring from AliExpress and I'm very happy with it. I picked up a 32 tooth for only $7.04 and I'm glad I made the swap!

https://www.aliexpress.com/item/EKFan-104BCD-Multicolor-XT-Oval-Round-30T-32T-34T-36T-Circle-Crankset-Plate-Narrow-Wide-MTB/32826549087.html?spm=a2g0s.9042311.0.0.8JRGti