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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 12-26-06, 02:14 PM   #1
lunacycle
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Two Levers -- One Brake?

I'd like to rig something up so I can operate the front brake with two separate levers. Apart from the method presented at this link, has anyone found a good, economical way to do this?

I was thinking of mounting either a Primo Pervert, or a London Mod on the brake caliper.

Does anyone have any experience with either of these components?

Are there other methods of accomplishing this?
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Old 12-26-06, 02:40 PM   #2
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The problem with the pervert is that i believe the crossbar that holds the cables would pivot when you pulled the brake lever and not really put much force on the brake. The london mod looks like it was made for what you are trying to do, but I can't really picture quite how it works.
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Old 12-26-06, 03:20 PM   #3
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What about cyclocross brakes?
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Old 12-26-06, 03:28 PM   #4
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Quote:
Originally Posted by cooker
What about cyclocross brakes?
I think I understand what you're saying, but I want to use two time trial levers on the end of my bullhorn bars, so I need to find a way for two separate brake cables to operate one brake.
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Old 12-26-06, 03:38 PM   #5
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I searched a bit more, and found this spendy little part by Problem Solvers, but I was hoping to find a less expensive solution.
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Old 12-26-06, 04:57 PM   #6
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something like this with custom knarps? http://www.hollymillcycles.co.uk/sms...621g3upper.jpg

Last edited by dooley; 12-26-06 at 05:05 PM.
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Old 12-26-06, 06:25 PM   #7
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The London mod isn't going to help you - that's just to mount 2 cables to one cable stop. The part you're looking for is a BMX gyro detangler. Normally used 1:2, but you can flip it around and use it 2:1.

Here's a cheap one on amazon:
http://www.amazon.com/Odyssey-Lower-...sporting-goods
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Old 12-26-06, 08:01 PM   #8
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Quote:
Originally Posted by audioel
The London mod isn't going to help you - that's just to mount 2 cables to one cable stop. The part you're looking for is a BMX gyro detangler. Normally used 1:2, but you can flip it around and use it 2:1.

Here's a cheap one on amazon:
http://www.amazon.com/Odyssey-Lower-...sporting-goods
That wont work for two reasons. One, the double ends are two short. Two, it doesnt work unless both are being pulled at once.
Ive used Gyros for years and years so i well know this.
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Old 12-26-06, 09:15 PM   #9
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Why not use two separate brakes? Put one in front of the fork as normal and the second one behind. Good probability of clearance issues, but you never know. I've seen it done before. It was on a 20"er with a roll cage made to do 360 endos...but don't let that stop you.
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Old 12-28-06, 07:45 AM   #10
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One more way

http://fixedgeargallery.com/resource...ens/brakes.htm
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Old 12-28-06, 08:35 AM   #11
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Quote:
Originally Posted by imabeliever1
Yep, I actually referenced that in my original message. Based on the comments above, I think I'll try modifying an upper gyro cable, as described in the link above.

Thanks for all of the comments.
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Old 12-28-06, 09:19 AM   #12
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Quote:
Originally Posted by lz4005
It was on a 20"er with a roll cage made to do 360 endos...but don't let that stop you.

no chance of pics of that is there? sounds pretty awesome
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Old 12-28-06, 09:28 AM   #13
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Old 12-28-06, 11:32 AM   #14
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Quote:
Originally Posted by blu3d0g
no chance of pics of that is there? sounds pretty awesome
I've seen pics of several before but can't find them again. It sort of looked like 3/4 of a pennyfarthing wheel made into a roll cage for a bmx, with a harness to keep the rider from falling out when he jammed on the double front brake and flipped over.

Like this, except awesomer, and without that extra gear thingy at the top.
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Old 12-28-06, 12:13 PM   #15
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Quote:
Originally Posted by lunacycle
Are there other methods of accomplishing this?
I tried the odyssey gyro method myself. My experience is that it's a pita to adjust, the brake feels spongy (or it sticks), and it's difficult to get the same tension between the two brake levers. I now make do with one actual lever, one dummy, and one brake line.

ffff
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Old 12-28-06, 02:00 PM   #16
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I'm just curious...why would anyone want to rig up two levers with one brake? Is there any practical reason or is it just related to a uniqueness or boredom factor?
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Old 12-28-06, 03:35 PM   #17
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Originally Posted by mihlbach
I'm just curious...why would anyone want to rig up two levers with one brake? Is there any practical reason or is it just related to a uniqueness or boredom factor?
My reason: I like to ride with hoods and, when I started riding fixed, was used to brake-ability in both hands. I only wanted a front brake and didn't want to have to think about which hand was the dummy brake lever. So, for commuting in traffic two levers to one brake made sense in theory. A bit of a bust in practise.

ffff
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Old 12-28-06, 03:59 PM   #18
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Like this:



Just a problem solver cable joiner. Two TT brake levers to a single front brake. Seems to be the cleanest solution we could find when I had this bike built. Cautioned against grabbing both levers at the same time or could potentially strip the cables from the housing. Works great, I love it.
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Old 12-28-06, 04:05 PM   #19
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Quote:
Originally Posted by feefifofum
My reason: I like to ride with hoods and, when I started riding fixed, was used to brake-ability in both hands. I only wanted a front brake and didn't want to have to think about which hand was the dummy brake lever. So, for commuting in traffic two levers to one brake made sense in theory. A bit of a bust in practise.

ffff

OK..that makes sense, as you say, "in theory". One other question. Can you generate much more braking power by pulling with both levers? I'd be afraid of grabbing both levers in a panick and end up endoing over the bars.
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Old 12-28-06, 04:13 PM   #20
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Quote:
Originally Posted by mihlbach
I'm just curious...why would anyone want to rig up two levers with one brake? Is there any practical reason or is it just related to a uniqueness or boredom factor?
Boredom coupled with a desire for symmetry.
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Old 01-09-07, 12:01 PM   #21
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Just an update on this project: It didn't work for ****.

I tried running two brake cables through a modified bmx upper gyro cable thingy, so that they could both operate the single front brake. However, there was so much friction in the cables that the brake spring was not strong enough to return to its open position. I think this was due to the fact that, one, the brake levers were cheap-o Nashbar tt levers, with no return springs, and that, two, the brake cables curved sharply along the bends of the tt bars.

I think that this setup could be made to work adequately if the cables were less restricted and the brake levers had decent return springs. Also, the cheap brake caliper that I used (Shimano Sora) may have played a roll in the unfortunate outcome of this $8 experiment.
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Old 01-09-07, 12:14 PM   #22
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I investigated the double brake possibility for the same reasons as you and i just wound up running a hood and a dummy hood (They are that awesome and cheap Campy Ergo copy made by Tektro). I have never once grabbed the dummy lever wishing for a brake, but I had already sort of trained myself to use only the front brake in panic situations.

If you have a nice low gear you will be braking with your legs mostly anyhow so all this cable related head scratching and gadgetry will be moot.

One things for sure, anything is preferable to road bars with one aero lever.
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