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One Hand Wonder

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One Hand Wonder

Old 04-06-14, 10:57 PM
  #26  
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Originally Posted by thirdgenbird
How was the recall handled?
With absolute class. Unfortunately, because of the way the electronics were placed into the gutted out lever, SRAM's offer of a temporary mechanical replacement was not feasible, so the Bandit spent the winter doing trainer duty. It's on it's way to Wisconsin shortly to fit the new hydro system. Can't wait. Despite the hiccup, I think this is game changing brake technology, at least for me.
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Old 04-07-14, 06:07 AM
  #27  
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That's great. I was worried you may have gotten forgotten.

now that shimano makes hydraulic di2, others should have a pretty straight forward option. You could put a bar end tt shift lever (front) on the needed side with the normal sti lever (rear) and the only special part you would need is the brake splitter. They even let you reprogram which shift lever does which so left vs right hand shouldn't manner. The limiting factor would be disc brakes but even that is pretty common now.

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Old 04-07-14, 07:21 AM
  #28  
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Very cool bike. Sorry if these are already answered (I just skimmed the thread)

Is the shifting sequential, i.e. one button moves to the next ratio, shifting front, rear or both as necessary to get to the next gear in the progression? Fairwheel bikes has done this, and it would seem beneficial to one handed setup.

Is the braking force adjustable between front an back. If you get an even amount of force between the 2 brakes, the back is going to lock before you're getting maximum available braking force on the front. So I'm wondering if they did, or can do something to manage the braking force applying more to the front than the back?
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Old 04-07-14, 08:22 AM
  #29  
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Unfortunately no on the sequential part, but it will be about 10 minutes after Shimano, or anyone else releases the programming for it as an off the shelf feature. Get a partial sequential effect by simultaneously hitting the front and rear buttons, which moves 3 cogs with a hold.

On the brakes, you could set up the splitter to balance any way you want. I went with 50-50, but adjust the front to a closer tolerance so it is always pulling harder. Toying with some thoughts on how we might get a single lever to do front, rear or both.
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Old 04-07-14, 09:09 AM
  #30  
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very cool story man!!!! and a damn nice bike!!

2 things:

1. would it be terribly ironic if you rode a Cannondale with a Lefty front suspension??

2.
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Old 04-07-14, 09:37 AM
  #31  
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Watched a video about bike fitting, a lecture at some University, can find it on Youtube. His assistant was a female cyclist who essentially rides with one hand also, she won the paraolympics in cycling. She was riding a BH, but I don't think there were any changes to the bike. The changes were with the component manufacturers, has a special handlebar etc.

Great looking bike, awesome you can continue to ride. I hope you stay safe.
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Old 04-07-14, 11:58 AM
  #32  
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Originally Posted by tigat
I have a total mechanical solution on my Bianchi that works pretty well. The front runs from a bar end shifter on a snubbed off extension tube, mounted on the top bar. The brake runs off the STI, stays single cable through an interrupter or cross lever on the top tube, and then through the splitter. Interrupter works okay, STI lever is a very hard pull. I'll dig up a picture and post.
Here are a couple of the mechanical solution on the Bianchi.

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Old 04-07-14, 03:05 PM
  #33  
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This is Joe. He's a badass. I've sponsored him for a few years now. Started racing with him when he was running a bar end shifter and regular lever for the front.

He won a gold, Silver, and a Bronze in London.

We asked off and on for years for product or help. We're in Chicago and race with SRAM engineers. No one was ever interested in helping. All along we should have just asked trek I guess - even though they never really wanted to step up with and gear either.


He's always used a brake splitter at the handlbars from Problem Solvers for 1 lever 2 brakes. Switched to the sprinter and/or climbing buttons for extra shift locations on his current setup. At first he had the regular Di2 right lever also mounted to the same side of the bars and was hitting the buttons on it.

...oh...and he also races cyclocross.
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Old 04-07-14, 05:26 PM
  #34  
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Originally Posted by Psimet2001
This is Joe. He's a badass.
Mr. Berenyi is indeed a badass. Cool that you sponsor him. Not cool that he's got to scrap for support from others.

I was a Paralympic ski racer both, alpine and nordic, back in the dark ages. It was much the same (full time job, bake sales to raise money for tickets to Europe), which cut into the time time you could spend training and improving, and ultimately sent me off to law school.

I got on Trek's radar screen because of a friend in high places, not because of any performance cred as a cyclist, and that got me in front of some engineers who were intrigued by the challenge. Trek has a budget for community projects, and I became one of them.This was never intended to be a commercial-promotional thing, but more of a feasibility exercise for developing solutions that we could share.

It is still a work in progress, but I can assure you that Joe, and the other world class athletes, along with us common folk, now have some attention that is is not going to fade.
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Old 04-07-14, 06:34 PM
  #35  
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Originally Posted by jayforty
... whilst I am happy with the modern brake and shift mechanisms, I cant see how to get a trigger for the front derailleur fitted. I have been toying with a ten speed rear instead.
It looks like this may have been missed. I wonder if one could mount a retroshift lever to a Sram or Shimano integrated brake/shift lever. This could potentially provide front and rear shifting in one place. Thinking about it, this might be harder to make work with the Shimano system due to similar movements.

Good luck,
mike
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Old 06-15-14, 02:16 PM
  #36  
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I do like the look of that shifter. Is it and 'end tube' type? What is the clamp you have ut in - is it some type of torch holder?

Sorry I've taken time to get back but I have at last chosen a road bike to modify!
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Old 06-15-14, 08:14 PM
  #37  
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Best thread I've read here. Thanks for sharing all of this and if you ever come back to the Madison/Waterloo area, please PM so that I can ride with you. Most likely, you will smoke me on the climbs. Inspiring......
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Old 06-16-14, 10:33 PM
  #38  
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Very, very cool setup. Fantastic use of electronic shifting technology.
Made me think of my grandfather who lost a leg in WW1 and had to get cars improvised with hand clutches and whatnot until his first automatic which was probably in the 50s sometime.
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Old 06-17-14, 11:38 AM
  #39  
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Hot.
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Old 07-04-14, 07:33 PM
  #40  
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I wonder if any of these adaptations would be of interest to the bicycle polo set. Most of the ones I have seen use a single front sprocket, put a rear derailleur twist grip on the left side, and run dual-pull brake cables from the left lever. Perhaps the need go no further, but electronic shifting might open up new opportunities.
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Old 09-15-15, 03:43 PM
  #41  
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Originally Posted by tigat
Unfortunately no on the sequential part, but it will be about 10 minutes after Shimano, or anyone else releases the programming for it as an off the shelf feature. Get a partial sequential effect by simultaneously hitting the front and rear buttons, which moves 3 cogs with a hold.

On the brakes, you could set up the splitter to balance any way you want. I went with 50-50, but adjust the front to a closer tolerance so it is always pulling harder. Toying with some thoughts on how we might get a single lever to do front, rear or both.
I use the same set up but with the Shimano Di2 hydraulic disc brakes. I can't get the brakes to bite particularly well though and wondered if SRAM had to make a modification to the master cylinder to displace 2 slave cylinders?
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Old 09-15-15, 04:02 PM
  #42  
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No changes on the master to my knowledge, and I believe they use the same master for their discs. It works fine for my rim brake set up. I don't know if the discs require more.
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Old 09-15-15, 04:52 PM
  #43  
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Nice.

Any reason why you don't cut off the left handlebar, other than using it as a speedo mount?
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Old 09-15-15, 05:02 PM
  #44  
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Originally Posted by CliffordK
Any reason why you don't cut off the left handlebar, other than using it as a speedo mount?
I keep thinking the left arm may grow back some day, reptile like.

In truth, I loan it out to my boys from time to time, and the guys at the shop ride it when they're working on it. Also, it's kind of fun to come up along side someone and chat for a bit, and then see the look on their face when they realize that both the bike and rider are a little different.
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Old 09-15-15, 05:17 PM
  #45  
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No reason why your mechanics shouldn't practice riding one handed.
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Old 09-15-15, 05:20 PM
  #46  
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Originally Posted by CliffordK
No reason why your mechanics shouldn't practice riding one handed.
You'd think, but they're wimps and too important to lose.
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Old 09-15-15, 06:17 PM
  #47  
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Great and inspiring story.
Thanks.
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Old 09-15-15, 06:42 PM
  #48  
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Very cool story and a cooler bike.
glad to hear you're hip is healed to the point of being able to ride again.
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Old 09-15-15, 07:12 PM
  #49  
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Soon Sram eTap will be available and I would hope that Sram will work with you to develop a 2 button system that will work with you.

Very inspiring and tip of the hat to Trek and Sram.
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Old 09-15-15, 07:18 PM
  #50  
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Regarding your brakes, is there more pressure applied to the rear than the front, equal pressure, or more to the front brake? I am curious how the braking keeps from locking up the front brake and possibly causing a crash or some other serious problems.

PS: Love that red color! When I got my Domane, my choices were white/black or solid black.
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