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Falco Narrow/Wide Single Front Chainring
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http://www.bikerumor.com/2015/02/12/falco-brings-narrowwide-1x-chainrings-to-triathlon-for-simpler-faster-times/




It's about time

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Re: Falco Narrow/Wide Single Front Chainring [milesthedog] [ In reply to ]
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official press release: http://endurancesportswire.com/...-narrow-single-ring/

But Shimano only? that doesn't even allow for an aero spider.

wovebike.com | Wove on instagram
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Re: Falco Narrow/Wide Single Front Chainring [milesthedog] [ In reply to ]
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hoping to get mine set up in the next week or so... excited to see how it all works out.

My Blog - http://leegoocrap.blogspot.com
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Re: Falco Narrow/Wide Single Front Chainring [milesthedog] [ In reply to ]
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Not going to lie, I'm curious to test it out.
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Re: Falco Narrow/Wide Single Front Chainring [milesthedog] [ In reply to ]
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God I hope they make it in 130 pattern..... Bye bye to my front derailleur
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Re: Falco Narrow/Wide Single Front Chainring [milesthedog] [ In reply to ]
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These are the guys sponsoring Weiss... I'll wait for a reputable company to bring something to the market.
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Re: Falco Narrow/Wide Single Front Chainring [WILLEATFORFOOD] [ In reply to ]
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Something tells me that Sram will be all over this, with their push for 1x11 mtb being so successful. I'm looking forward to seeing the wireless TT shifter...

And, a single front chainring will be good for those Di2 single button TT shifters.

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Re: Falco Narrow/Wide Single Front Chainring [leegoocrap] [ In reply to ]
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looking forward to trying this out(and trying to determine watts lost to chain efficiency) alas, it has not arrive d yet
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Re: Falco Narrow/Wide Single Front Chainring [milesthedog] [ In reply to ]
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Is there only me that doesn't really see the benefit of this?
Maybe it's because I mainly compete on rolling/hilly courses, but why remove the extra gearing option?

I'll give single chainrings a go if/when we get either 13/14 speed cassettes or 10t cassette rings, so that I can replicate my current gearing range without sacrificing shift smoothness.
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Re: Falco Narrow/Wide Single Front Chainring [Liaman] [ In reply to ]
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more importantly, with sequential shifting on its way, having the extra gears will most likely win out (in road and mountain biking)

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Re: Falco Narrow/Wide Single Front Chainring [Liaman] [ In reply to ]
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Because there is a non trivial aerodynamic gain to be had when you remove the front derailleur.

Also a bit of cost savings if you built up a bike like this from the start.

And of course a very marginal weight savings.



Liaman wrote:
Is there only me that doesn't really see the benefit of this?
Maybe it's because I mainly compete on rolling/hilly courses, but why remove the extra gearing option?

I'll give single chainrings a go if/when we get either 13/14 speed cassettes or 10t cassette rings, so that I can replicate my current gearing range without sacrificing shift smoothness.



Kat Hunter reports on the San Dimas Stage Race from inside the GC winning team
Aeroweenie.com -Compendium of Aero Data and Knowledge
Freelance sports & outdoors writer Kathryn Hunter
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Re: Falco Narrow/Wide Single Front Chainring [Liaman] [ In reply to ]
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Liaman wrote:
Is there only me that doesn't really see the benefit of this?
Maybe it's because I mainly compete on rolling/hilly courses, but why remove the extra gearing option?

I'll give single chainrings a go if/when we get either 13/14 speed cassettes or 10t cassette rings, so that I can replicate my current gearing range without sacrificing shift smoothness.

I'm with you on that. You lose 10 watts from cross chaining to the big cog in the rear. This loss of drive train efficiency was brought up a few months back in a different thread.

A false humanity is used to impose its opposite, by people whose cruelty is equalled only by their arrogance
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Re: Falco Narrow/Wide Single Front Chainring [milesthedog] [ In reply to ]
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milesthedog wrote:
Something tells me that Sram will be all over this

https://www.sram.com/...cx1-x-sync-chainring

They just need to make "normal" sizes available

The 52 on the Venge lunch ride is that ring specific to specialized. Forgot to ask the LBS if they can order it as a replacement part.

Tempted to do a single ring for PR
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Re: Falco Narrow/Wide Single Front Chainring [Chri55] [ In reply to ]
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Chri55 wrote:
I'm with you on that. You lose 10 watts from cross chaining to the big cog in the rear. This loss of drive train efficiency was brought up a few months back in a different thread.

Can you point me to that data?
I've heard of a couple people testing this, and some seeing more loss than others, but haven't heard of anything like 10 watts before.



Kat Hunter reports on the San Dimas Stage Race from inside the GC winning team
Aeroweenie.com -Compendium of Aero Data and Knowledge
Freelance sports & outdoors writer Kathryn Hunter
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Re: Falco Narrow/Wide Single Front Chainring [jackmott] [ In reply to ]
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I read it on a thread on this forum not long ago.

I'll see if I can find the relevant thread.

A false humanity is used to impose its opposite, by people whose cruelty is equalled only by their arrogance
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Re: Falco Narrow/Wide Single Front Chainring [jackmott] [ In reply to ]
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All good points, and I hadn't considered the cost aspect.
If I was a flatlander then it would be worth it for me, I'd likely throw a 52 on there and be done with it.
But here in Northern England we'll be on doubles for a while yet. We simply need too many gears for the current single chainring systems.
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Re: Falco Narrow/Wide Single Front Chainring [Chri55] [ In reply to ]
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Chri55 wrote:

I'm with you on that. You lose 10 watts from cross chaining to the big cog in the rear. This loss of drive train efficiency was brought up a few months back in a different thread.

There is that, but you lose a lot more if you stop pedaling or have to slow down pedaling if you have issues getting into the big ring or it hangs up dropping down.. or drops off entirely and you have to stop to get the chain back on.

Plus possible aero gains would probably make more for more saved watts overall then 10 watts wasted for a few seconds.
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Re: Falco Narrow/Wide Single Front Chainring [jackmott] [ In reply to ]
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Found it.

http://forum.slowtwitch.com/...%20chaining;#5360010

I am no expert but take from it what you will.

A false humanity is used to impose its opposite, by people whose cruelty is equalled only by their arrogance
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Re: Falco Narrow/Wide Single Front Chainring [Chri55] [ In reply to ]
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Interesting.
I wonder if that might just be more to do with the Kickr reading differently at higher vs lower speeds.

I did find this:
http://www.ihpva.org/...ve/PDF/hp52-2001.pdf

check page 7



Kat Hunter reports on the San Dimas Stage Race from inside the GC winning team
Aeroweenie.com -Compendium of Aero Data and Knowledge
Freelance sports & outdoors writer Kathryn Hunter
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Re: Falco Narrow/Wide Single Front Chainring [jackmott] [ In reply to ]
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Straight 53/12 31.11mph 249w fast
Crossed 53/26 14.63mph 263w slow
Straight 39/23 11.94mph 251w slow
Crossed 39/11 24.97mph 261w fast

It would be nice if someone tried this with a computrainer as well.

A false humanity is used to impose its opposite, by people whose cruelty is equalled only by their arrogance
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Re: Falco Narrow/Wide Single Front Chainring [Chri55] [ In reply to ]
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Chri55 wrote:
Found it.

http://forum.slowtwitch.com/...%20chaining;#5360010

I am no expert but take from it what you will.

I speculate that with cross chaining on a wide-narrow ring the losses will be increased as the wide tooth will tend to rub more against the side plates of the chain. Still waiting for efficiency data of narrow-wide chains relative to the standard.
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Re: Falco Narrow/Wide Single Front Chainring [Pantelones] [ In reply to ]
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Correct. It depends on how flat the terrain is and how often one's chain is in big cogs. I have heard from strong guys too many times that they are hardly ever in the small ring (wish I could say that myself). There are also several options typically available for surface treatment. Some are better than others (but more $$$). There will be a bit more power loss when chain is deeply crossed. It is a bit more severe than SRAM's 1X11 mountain bike system because the chainstay is a bit longer and ring a bit smaller on a mountain bike.

That said, the aero/cost/simplicity temptation of single ring is significant, especially when you are a stronger rider targeting a flatter race course. Nothing is ever perfect and it's all about trade-offs. Someone could just find this useful.

A well lubed new chain and a bit of break-in period make a difference too.

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Last edited by: threefire: Feb 12, 15 19:17
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Re: Falco Narrow/Wide Single Front Chainring [mrtopher1980] [ In reply to ]
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mrtopher1980 wrote:
milesthedog wrote:


The 52 on the Venge lunch ride is that ring specific to specialized. Forgot to ask the LBS if they can order it as a replacement part.

Not sure at this time, but when it first came out you could not order it. I haven't checked lately. I'll be in the shop tomorrow and will check.


Jim

**Note above poster works for a retailer selling bikes and related gear*
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Re: Falco Narrow/Wide Single Front Chainring [Chri55] [ In reply to ]
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Chri55 wrote:
Straight 53/12 31.11mph 249w fast
Crossed 53/26 14.63mph 263w slow
Straight 39/23 11.94mph 251w slow
Crossed 39/11 24.97mph 261w fast

It would be nice if someone tried this with a computrainer as well.

Should be possible if someone compared Powertap Vs. crank-based meter. I believe jackmott just purchased a power2max...

ZONE3 - We Last Longer
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Re: Falco Narrow/Wide Single Front Chainring [jackmott] [ In reply to ]
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jackmott wrote:
Interesting.
I wonder if that might just be more to do with the Kickr reading differently at higher vs lower speeds.

I did find this:
http://www.ihpva.org/...ve/PDF/hp52-2001.pdf

check page 7

It would have to be a non-linear effect on the Kickr then, since both high speed (53-12) and low speed (39-23) was efficient, but those in between were not. But I'm assuming speed was the same since wattage was the same, so the difference was actually cadence?

If the FD rubbed in the cross-chain tests that would explain a lot...
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