[TigWorld]

Has anyone used the hydraulic brake hose from discobrakes.com http://discobrakes.com/?s=0&t=4&c=78&p=818& ?

They claim its only 19g/m and is "Kevlar reinforced Teflon Nylon hose for use with DOT 4 or Mineral oil". I've got some left-over silver jagwire hyflow and it weighs about 23g/m but is quite a bit more expensive and doesn't include the fittings.

According to the discobrakes claims, a complete rear brake hose setup should come in at 19g/m x 1.6m + 2 x 1g barbs + 2 x 3gm nuts = 38.4g which seems quite reasonable.

 

[whybotherme]

interesting. i would certainly be interested in shaving weight there if the stuff performs well.

let us know how it goes!

 

[Epic-o]

Magura HS33's mineral oil hose weighs 15gr/m

 

[TigWorld]

Do you know if the Magura hose would work with Dot 4 / 5.1? Anyone tried it?

 

[culturesponge]

isn't Yumeya YM-BH81 is also supposed to be lighter than regular mineral oil type hydraulic line?

or is it just: "Thicker inner tube of hose with smaller bore diameter increases rigidity over BH59 hose by 39% improving power and performance"

anyway its still on sale @ 79% off here : http://www.jensonusa.com/store/product/CA269D00-Shimano+Yumeya+Brake+Hose+Kit.aspx?sc=FRGL

...can't find a weight for it per metre - does anyone know?

 

[culturesponge]

double post please delete - sorry

 

[culturesponge]

triple post please delete - sorry (WTF with the server tonight?)

 

[XgreygOOse]

triple post please delete - sorry (WTF with the server tonight?)

Trigger happy mouse I think

 

[marko]

HOPE hose weighs 16.3g / meter.

 

[mclark999]

Magura HS33's mineral oil hose weighs 15gr/m

Is this the same hose and weight? and if so, will it work with Shimano Zee fittings?

Magura Mountain Bike Rim Brake Tubing - bike brake accessories - Buy at BikeSomeWhere.com

 

[andrepsz]

HOPE hose weighs 16.3g / meter.

is this the hose you are talking about?
Hope 5mm Standard Hose Kit with Fittings for Hope Brake | eBay

 

[andrepsz]

Magura HS33's mineral oil hose weighs 15gr/m

Hello, wow...5 years from your post I'm asking you a question! but listen: Have you ever used this HS33 hose with disc brakes? if yes...any issues? because Magura doesn't recommend that....only for rim brakes.

 

[andrepsz]

Brake Force One Brake hose; 13.33g/meter....and...I also checked the BFO fitting and the thread is the same as standard fittings!
Picture to show all 3 hoses I have all at 300mm length.

BFO: 4g
Sram Avid: 5.4g
Shimano high power: 6g
Jagwire HFK: 6.5g
Magura Disc-Tube 2.2: 5.88g

 

[Seb K]

Glad you weighed those dude . I was surprised when I shortened by hose (BFO) that they were kevlar .

 

[Varaxis]

isn't Yumeya YM-BH81 is also supposed to be lighter than regular mineral oil type hydraulic line?

or is it just: "Thicker inner tube of hose with smaller bore diameter increases rigidity over BH59 hose by 39% improving power and performance"

anyway its still on sale @ 79% off here : Jenson USA - Online mountain & road bike parts, clothing and accessories shop | Jenson USA

...can't find a weight for it per metre - does anyone know?

I recall an interview and factory tour at Shimano where the Shimano rep emphasized that finding materials to make their hoses as rigid as possible, without being brittle, was a challenge, and played a big role in getting their brakes feeling so direct, and not spongy like the competition.

 

[andrepsz]

....and not spongy like the competition.

I don't believe a spongy feeling is related to hoses.

13.33g/m BFO hose has nothing about spongy...quite the opposite!

 

[phlegm]

I recall an interview and factory tour at Shimano where the Shimano rep emphasized that finding materials to make their hoses as rigid as possible, without being brittle, was a challenge, and played a big role in getting their brakes feeling so direct, and not spongy like the competition.

I don't believe a spongy feeling is related to hoses.

13.33g/m BFO hose has nothing about spongy...quite the opposite!

Interesting point from Varaxis, which got me thinking. Does hose stiffness matter? (Bedroom: yes. Bikes: I don't know.)

I was thinking "no", but what if the force applied to the brakes moves the hose a bit along the way, instead of sending that force with 100% efficiency? Take a water hose with a lot of pressure - we've all seen that when they slither or flip around on their own from the pressure. Does the hose movement take away from the force/pressure along the hose?

I wonder if Shimano is really seeking super-stiff hoses? As it is, their hoses are indeed a pain to work with, especially compared to other brands.

 

[Seb K]

I think a stiffer hose would be better as the fluid would move direction into the direction needed . Any flex would delay the fluid slightly . This all sounds dirty to me !!!

 

[MichaelV8V]

Isn't the real problem with hoses that they can expand if they aren't strong enough? So some of your pressure is inflating the hose, rather than forcing the pads onto the disc.

When that happens it would feel exactly like it does when you compress an air bubble in a poorly bled hose, your finger pressure isn't all going to the pads.

In the car and motorcycle racing scene, strong, braided hoses are a standard way to increase brake performance

 

[andrepsz]

I have a hard time wrapping my head around braided hoses for cycling. Comparing the forces generated by an entire leg pushing the brakes of a car (plus your back compressing the seat) with One finger pulling a brake lever...I'm sure there are ways to precisely quantify that but just by thinking about it I can securely say that the difference is huge!

Yes is a theory that makes sense, but until I see precise data to prove the benefit of a braided hose affecting braking performance on a bicycle....I'll stick with my lovely BFO hoses.