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Anyone still using BioPace chainrings?

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Anyone still using BioPace chainrings?

Old 05-21-16, 10:06 AM
  #1  
Knet
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Anyone still using BioPace chainrings?

I just picked up an '87 Trek 520 (yay!) and have it together and did a quick fitment ride, and I gotta say, those Biopace rings aren't bothering me too much. Thought they would.

My initial plan to to replace those right away, but not so sure now. I am going to log some miles on it today, so maybe I'll change my mind.

Anyone still running those un-round rings anymore?
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Old 05-21-16, 10:18 AM
  #2  
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this comes up every few months- I have some and I like them. I barely notice unless im climbing in the small ring - as its nearly square. I got to say, it seems to actually help, but it might just be illusion.
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Old 05-21-16, 10:23 AM
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I have those on my Reflex ALX Carbon and don't mind them at all.
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Old 05-21-16, 10:30 AM
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Yep I'm still using them. Got them on my '90 Schwinn Traveler and '87 Centurulion Iroman Expert. I like them and have no plans to swap out
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Old 05-21-16, 10:57 AM
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I've only had one bike with biopace, an '88 Shogun, and didn't notice anything that'd cause me to change it out.
Except for the ugly yellow sticker.
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Old 05-21-16, 11:02 AM
  #6  
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If you decide you don't like them, I have a trek frame from the same year that could use a donation.
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Old 05-21-16, 02:18 PM
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Originally Posted by Rice Wash View Post
If you decide you don't like them, I have a trek frame from the same year that could use a donation.
Alloy or steel rings? I have some spares here and could perhaps send you a couple if you're looking for rings for a double crankset.

Cheers
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Old 05-21-16, 02:25 PM
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I saw an article recently that a new company is revisiting this old idea and making new oval chainrings. My LBS has some biopace rings in the parts bin and I have half a mind to pick them up and put them on an old bike just for kicks. seems like a good idea in theory anyway.
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Old 05-21-16, 03:27 PM
  #9  
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I have them on my Centurion LeMans. Don't really notice them to be honest.
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Old 05-21-16, 03:27 PM
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I think, @Knet, the rings on your bike are probably the milder flavor BioPace, not quite as un-round as some earlier models. My '87 Tempo has them and I have no problem with them. Only notice the difference when I'm looking down at them, or standing up to mash up a hill.

My Cannondale ST came with one of the more lumpy versions on the inner (30T) ring; drove me nuts!
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Old 05-21-16, 03:27 PM
  #11  
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Have 2 bikes with triples on them.
One is a biopace triple, but a round granny ring.
One is a SR Ovaltech triple, but with a round granny ring.

I turn the pedals and the chain moves the bike. I dont notive the oblong shape on either.
...except for the granny, which is why each is now a round ring.
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Old 05-21-16, 03:39 PM
  #12  
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I don't use it, but I have single 52t chainring, that came on an Exage crank, that was on a bike set up as a single speed. It's in great condition, but I'd only use a 52t, if a bear was chasing me down a mountain.
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Old 05-21-16, 04:01 PM
  #13  
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I have Biopace on a road bike and SR Ovaltech on a mountain bike and I don't feel any significant difference between them and the round rings on my other bikes.
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Old 05-21-16, 04:20 PM
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I have Biopace on my winter bike (Giant Yukon) and my Miyata 610...I like them, but I don't think they make much difference. I certainly wouldn't change them out.
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Old 05-21-16, 04:43 PM
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I have biopace on 4 of my 5 Ironman. As a 86 bicycle guide review stated, at best it helped slightly, at worst you don't notice.
I tend to agree.
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Old 05-21-16, 04:45 PM
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My 1989 Nishiki Ariel came with them and are still on there now. Ride the bike a couple of times a week still. They are fine. Notice to that other companies are evolving that concept and calling them their own proprietary names these days?
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Old 05-21-16, 05:39 PM
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Originally Posted by ypsetihw View Post
I saw an article recently that a new company is revisiting this old idea and making new oval chainrings. My LBS has some biopace rings in the parts bin and I have half a mind to pick them up and put them on an old bike just for kicks. seems like a good idea in theory anyway.
There are actually a couple companies out there making smaller ovals for MTB's. Blackspire, Wolftooth, and some others. Not sure about the road market.

One big difference I 'think' I remember hearing about was that they were clocked differently than Bio Pace.
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Old 05-21-16, 05:43 PM
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I have biopace rings on my 1987 Stumpjumper comp. I don't really notice them and certainly wouldn't swap them out.
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Old 05-21-16, 07:43 PM
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Originally Posted by texaspandj View Post
I have biopace on 4 of my 5 Ironman. As a 86 bicycle guide review stated, at best it helped slightly, at worst you don't notice.
I tend to agree.
I agree with you, I have one bike with a round big ring and Biopace middle and small. I don't notice the middle ring, but I do notice the granny- it's much more pronounced.

However, there are people that swear Biopace ruins knees.
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Old 05-21-16, 07:52 PM
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I wanted to get back to a 42T road ring and found a couple new, in-packaging Ultegra-level Biopace rings on eBay a couple years ago. I think I paid $15 for each of them.

I don't notice them as much as I remembered on my '88 Specialized Sirrus; the effect was more pronounced on the smaller rings I had on my mountain bike back then (28/38/48).
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Old 05-21-16, 07:56 PM
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I've had 3 or 4 rigs with biopace rings. Never really noticed a difference between BP and round rings.
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Old 05-21-16, 08:03 PM
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I have a 90's specialized mtn bike with them, didnt realize until i looked down while pedaling. I have no reason to dislike them.
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Old 05-21-16, 08:18 PM
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welp, that settles it, I'll be revisiting this idea!
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Old 05-21-16, 08:44 PM
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I plan to try them soon. A kind BFer sent them to me. When I showed them to my wife, she made the funniest face!
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Old 05-21-16, 08:47 PM
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I tend to ride that bike the most, maybe thats why.....
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