Author Topic: Elliptical Chainrings. Thoughts?  (Read 3685 times)

voodoo320

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

bxcc

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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

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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

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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

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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

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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

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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

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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.

voodoo320

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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

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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

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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



carbonazza

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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

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