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Old 2008-11-09, 02:30 AM   #1
dangerdog
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Dual brake levers

I’ve wanted to try this for a while now and finally got around to doing it. Hook up a standard brake lever and a drag lever both attached by cable to the same caliper. The best of both worlds in the drag verse standard debate. Although the brakes, cables and levers are decidedly low tech the results are fantastic. After several combined muni / road rides on my 36er this brake setup does everything I hoped it would plus a bit more. The only work required was to add some metal to the caliper to take the additional cable and the drag lever needed small changes to orientate to the right cable exit direction and lever position. I thought there might be an issue with the cables fighting each other or snagging each other but it turned out to be no problem at all. While I was at it I made up a KH style under seat bracket with combined standard and drag brake which is ready to go if and when I want to try instead of the T7 style bars.





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Old 2008-11-09, 02:40 AM   #2
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cool solution!

Also did you make the T7 style bars yourself? Would be great to know more about those too.
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Old 2008-11-09, 02:49 AM   #3
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yes the handlebars are homemade heres some info
http://www.unicyclist.com/forums/sho...08#post1079908
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Old 2008-11-09, 02:58 AM   #4
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Great, thanks!
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Old 2019-04-05, 09:51 AM   #5
Vogelfrei80
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Dual hydraulic lever brake?

I was wondering... about building a G29, but I cannot decide about the brake lever... near the saddle for light muni or far out on the handlebar for road riding?
So a question arises... does exist a single hydraulic brake activated via 2 different levers?
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Old 2019-04-05, 10:18 AM   #6
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Quote:
Originally Posted by Vogelfrei80 View Post
I was wondering... about building a G29, but I cannot decide about the brake lever... near the saddle for light muni or far out on the handlebar for road riding?
So a question arises... does exist a single hydraulic brake activated via 2 different levers?
The product you are looking for doesn't exist as far as I know, and would be very hard to get working properly. You can cobble something together with a T fitting, and if you have two brake handles and master cylinders without reservoirs (most modern brakes seem to have a reservoir), it might work. But added complexity (twice the brake levers to get smashed on the ground), and likely inconsistent feel are probably not worth it.

If you absolutely need to do it, I'd try and figure out how to mount two full sets of magura brakes on the same frame.

I'd just move the brake to the position you need each time you ride. Takes about 90 seconds, if you take your time.
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Old 2019-04-05, 10:57 AM   #7
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Don't Mad4One make a frame with two disc tabs, one on each side? I wonder if you could use one with an internal disc hub and the other with a KH EDB crank?

There's probably a perfectly good reason why not, but lets face it, it'd look cool!
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Old 2019-04-05, 11:22 AM   #8
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Interesting to see someone eventually having done this. I thought about the hydraulic setup a few years back and decided not to bother due to the technical challenges as discussed above.

Years later, I just have an exceptionally strong middle finger on my left hand from downhill dragging and constant brake use on my freewheel!
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Old 2019-04-05, 06:30 PM   #9
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Quote:
Originally Posted by Piece Maker View Post
Don't Mad4One make a frame with two disc tabs, one on each side? I wonder if you could use one with an internal disc hub and the other with a KH EDB crank?

There's probably a perfectly good reason why not, but lets face it, it'd look cool!
You got it! I can run a KH EDB and add a nimbus dbrake braket! Thank you!!!
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Old 2019-04-05, 08:06 PM   #10
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Quote:
There's probably a perfectly good reason why not, but lets face it, it'd look cool!
Well, there is no really good reason why you should, which I guess is a perfectly good reason not to.

Quote:
Originally Posted by Vogelfrei80 View Post
You got it! I can run a KH EDB and add a nimbus dbrake braket! Thank you!!!
Not sure how you add an inboard disk to your geared hub...
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Old 2019-04-05, 11:59 PM   #11
lobbybopster
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Dual rakes

Not sure how you add an inboard disk to your geared hub...[/QUOTE]

He can use this on a 48 hole 32" rim->
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Old 2019-04-06, 07:03 AM   #12
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Well, there is no really good reason why you should, which I guess is a perfectly good reason not to.



Not sure how you add an inboard disk to your geared hub...
I was thinking about using the same rotor and reversing the dbrake. I don't know exactly how, but I think I could try. A caliper will set in the front part of the rotor and one in the back part
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Old 2019-04-06, 12:14 PM   #13
Siddhartha Valmont
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This Y-junction on a hydraulic brake sounds vaguely familiar but I was not able to find the post on the forum with a quick search (a more thorough search is necessary).

However, it really sound like a problem specific to unicycles so pretty sure it was shown here (but I will check the french forum as well just in case...)
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Old 2019-04-06, 12:20 PM   #14
Siddhartha Valmont
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Found a similar recent discussion on the French forum:
https://forum.monocycle.info/t/deux-...e-levier/23065

The two important points:
  • a pic with double disks (but no close-up to see the details)
  • a general opinion that it would work better with cable than hydraulic(with the dual lever setup)
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Last edited by Siddhartha Valmont; 2019-04-06 at 12:21 PM.
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Old 2019-04-06, 02:35 PM   #15
Piece Maker
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Quote:
Originally Posted by Siddhartha Valmont View Post
This Y-junction on a hydraulic brake sounds vaguely familiar but I was not able to find the post on the forum with a quick search (a more thorough search is necessary).

However, it really sound like a problem specific to unicycles so pretty sure it was shown here (but I will check the french forum as well just in case...)
I feel like I've seen a Y-junction hydro brake on a bike adapted for a guy with one hand before. He had a prosthetic claw on his other hand that could grab the grip reliably, but it didn't have enough fingers to hold on and pull a brake at the same time, so he had a setup done that let him use one lever for both brakes.

I still reckon two separate brakes is a better idea. How about a disc and a rim brake? Put a Magura on the rim, and your choice of disc (Whether that's an EDB or a Nimbus hub/D'brake), set one of them up as a drag brake and the other as a more powerful yanking lever.

How you'd set up a drag brake like OP's with hydraulics, I don't know
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Last edited by Piece Maker; 2019-04-06 at 02:38 PM.
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