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Old 05-29-21, 03:01 PM
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Warning: Graphic Shorty Fender content!

Sorry I just couldn't let this rest. Behold the future:

https://www.renehersecycles.com/a-re...r-the-outback/

Last edited by bark_eater; 05-29-21 at 03:16 PM.
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Old 05-29-21, 05:13 PM
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From the linked post:

Oh, and you wonder about the bob-tailed fenders? They are for aerodynamics – our wind tunnel tests have shown that shielding the front of the tire tread – which moves at twice the speed of the bike – provides about the same benefit as a set of aero wheels. (Racing motorbikes have short fenders for the same reason, but the UCI doesn’t allow fairings for racing bicycles.) Ever since we spent three days in the wind tunnel, I’ve wanted to make some fenders to reduce my bike’s wind resistance. With the Oregon Outback known for its vicious winds, it made sense.
Interesting experiment. Jan Heine always seems to be returning to old ideas. Shorties never made a ton of sense to me (why bother with fenders if they don't protect the rider from road debris/liquid?). Anyone find them remotely useful?

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Old 05-29-21, 05:49 PM
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I can rationalize the idea of shortys protecting the pivots of center and side pull brakes as well as the lower headset bearings. I do have a Schwinn High Sierra that I intend to set up as a vintage "mountain touring" bike. I like fenders on all my bikes but think they would be kind of dangerous and easy to damage bombing around the woods. With front and rear racks I could do something like this, but extend the rear fender to go under the rear rack.
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Old 05-29-21, 06:46 PM
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Looks like wet back and wet nether regions.
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Old 05-29-21, 06:58 PM
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Where else would one mount their diavolo?

Diavolo 02 by iabisdb, on Flickr
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Old 05-30-21, 07:23 AM
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That's the front part of a winter training fender, correct? Did they split the rear fenders?
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Old 05-30-21, 07:39 AM
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Originally Posted by bark_eater View Post
That's the front part of a winter training fender, correct? Did they split the rear fenders?
No, the rear is not split.

And generally, I'd just call them training fenders removed on race day. I honestly don't know why they left on the front shorty. It is quick to take off/put on. And technically the bike pictured above is too new for that "style". The Italians mostly abandoned it after the war . Prewar road conditions were quite bad.

Gazzetta2 by iabisdb, on Flickr

Valetti 02 by iabisdb, on Flickr

Bizzi 07 by iabisdb, on Flickr
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Old 05-30-21, 07:57 AM
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Could Mr. Heine be on to something? At least to the point where the oldtimers felt that there was no disadvantage to leaving the front stub on?
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Old 05-30-21, 08:39 AM
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Well, it certainly could be more aero. But how much competition randonneuring is there? I always thought the spirit of the sport was not who is the fastest.
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Old 05-30-21, 09:05 AM
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It seems to me it would only be more aero in a direct head wind. In any kind of side wind or quartering wind the added surface area would only increase aerodynamic drag. Maybe tough guys like Jan only ride directly into the teeth of the wind.
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Old 05-30-21, 09:07 AM
  #11  
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I thinks it more of saving .1 second per km adds up when you get to 1200 km rides. That extra 30 minutes might be spent on sleep, which might make a difference between having a good ride or clawing for survival. Me I just tootle around the neighborhood....
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Old 05-30-21, 09:09 AM
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Originally Posted by obrentharris View Post
It seems to me it would only be more aero in a direct head wind. In any kind of side wind or quartering wind the added surface area would only increase aerodynamic drag. Maybe tough guys like Jan only ride directly into the teeth of the wind.
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The top of the wheel is always going up wind twice as fast as the the rest of the bike.
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Old 05-30-21, 09:10 AM
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I guess this means RH will be offering short fenders in the near future. Probably at a premium over regular fenders "due to the custom factor".
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Old 05-30-21, 09:11 AM
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Originally Posted by bark_eater View Post
Could Mr. Heine be on to something?
No, not really.
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Old 05-30-21, 09:14 AM
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The front stubs on those old photos - not about either speed or comfort. That's about racing long races on dirt roads. And keeping your goggles/eyeballs clean so you can see. That alone could be worth minutes.
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Old 05-30-21, 09:20 AM
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Originally Posted by bark_eater View Post
The top of the wheel is always going up wind twice as fast as the the rest of the bike.
Sure. But the crosswind is always acting against the increased surface area of the fender, much like deep section rims. There comes a point where the incremental disadvantage of one overcomes the incremental advantage of the other.
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Old 05-30-21, 09:32 AM
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Originally Posted by 79pmooney View Post
The front stubs on those old photos - not about either speed or comfort. That's about racing long races on dirt roads. And keeping your goggles/eyeballs clean so you can see. That alone could be worth minutes.
So there is an advantage to shorty fenders? The Paradigm shift is afoot!
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Old 05-30-21, 10:08 AM
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Originally Posted by iab View Post
But how much competition randonneuring is there? I always thought the spirit of the sport was not who is the fastest.
This was not a randonneuring ride, Lael Wilcox was specifically trying to set a record. But the part about randonneuring not being competitive is really just the opinion of a very vocal faction. The people that want to go faster just do it, so they aren't as vocal about it. If it wasn't about time, why are there time limits? Granted, there are also time minimums, but those have been ignored on PBP.
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Old 05-30-21, 10:36 AM
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I was searching for (full) fenders for the Grand Record when I came across these. I had never seen Bluemels shorties before so grabbed them at a very good price. Not to everyone's taste but I like 'em, the chrome strip up the centers is perfect.. A bit kitschy but definitely different.

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Old 05-30-21, 10:53 AM
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I actually have a couple dinged up orphan "French" aluminum fenders from the scrapyard, that I've thought about making shortys out of. I should be able to get a set of shorty's out of each full leangth one, but certainly have enough for a bunch of vestigial front fenders.
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Old 05-30-21, 11:01 AM
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So... As a person who does not ride in the wet, just where is the best position for shorty fenders. Are they protecting the rider from rooster tail, or protecting the bike from debris?

I do know one thing for me, when I ride in the wet, I get wet...

It would appear that having a shorty fender cover from 10:00 to 2:00 on the rear wheel and 9:00 to 1:00 on the front wheel to be most practical.

I have to admit, they do look nice.

Surly, someone has figured out a proven design. (And don't call me Surly...)
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Old 05-30-21, 11:29 AM
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My funny re: shorty fenders. A recent thread talked about long "solid" fenders. I now call shorty fenders "liquid" fenders. Any jersey will testify to that truth.
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Old 05-30-21, 11:43 AM
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Anyone notice how Jan turned off comments on his blog a month or two ago? It was all in preparation for his shorty fender teaser, which I'm sure will be followed by the product drop.

Meanwhile, recent Grant newsletter suggests metal fenders are not safe... We may as well cut all of ours down!
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