Thread: Braided brake lines. improve braking?

Following up on Dave's comment.

Static force on the brake pedal must give the same pressure at the wheel cylinder, regardless of the type of hose, (as the pressure depends only on the pedal force and the area of the master cylinder piston), except that if the braided hose allows less expansion, then the pedal return spring will be giving a slightly greater pedal pressure for the rubber hose, as the pedal will be pushed further for the same pedal force.

But this difference would a very small proportion for pedal loads high enough to swell any serviceable hose enough to give a measurable difference in pedal movement.

The only significant effect of brake lines that expand less will be slightly less pedal travel. The question is whether this effect is significant, and my feeling is that if it is, the rubber brake line is suapect.

John

Hi,

This a quote from a post from Joel### on AULRO re: LED headlights, in the Tech section. Keep in mind that Goodridge brakelines are TUV and DOT approved in the UK:

Type Approval
The 1958 Agreement operates on the principles of type approval and reciprocal recognition. Any country that accedes to the 1958 Agreement has authority to test and approve any manufacturer's design of a regulated product, regardless of the country in which that component was produced. Each individual design from each individual manufacturer is counted as one individual type'. Once any acceding country grants a type approval, every other acceding country is obliged to honor that type approval and regard that vehicle or item of motor vehicle equipment as legal for import, sale and use. Items type-approved according to a UN Regulation are marked with an E and a number, within a circle. The number indicates which country approved the item, and other surrounding letters and digits indicate the precise version of the regulation met and the type approval number, respectively.
Although all countries' type approvals are legally equivalent, there are real and perceived differences in the rigour with which the regulations and protocols are applied by different national type approval authorities. Some countries have their own national standards for granting type approvals, which may be more stringent than called for by the UN regulations themselves. Within the auto parts industry, a German (E1) type approval, for example, is regarded as a measure of insurance against suspicion of poor quality or an undeserved type approval.


UN Regulations (1958 Agreement)
Regs 41-60 - Transport - UNECE

cheers, DL