Replacing solid brake lines with flexible hoses

41 posts / 0 new
Last post
7 wonders of th...
Offline
Last seen: 37 min 40 sec ago
Joined: 17/04/2014

#20 -

or they could used good engineering practice and use flexible lines....... instead they choose to save a few pence and compromise the safety of owners and other road users.

.....god only knows why SVA / IVA allow them to pass, especially considering how padantic they can be on trim radii and plastic covers - 

ScottR400D
Online
Last seen: 15 sec ago
Joined: 23/08/2015

Resurrecting this old thread, does anyone know if the possibly short hoses, if one has the watts linkage, issue has been addressed? Are the hoses supplied by Redline still borderline? Does Redline supply a full kit of parts to do the conversion and does anyone know the approx cost?

Tazio
Tazio's picture
Online
Last seen: 5 sec ago
Joined: 17/04/2014

As I understand it, the Redline supplied hoses are longer than the ones CC supply.

 

Red Line Components
Red Line Components's picture
Offline
Last seen: 1 week 4 days ago
Joined: 17/04/2014

There are flexible hoses for S3 and S5 cars here at Redline, we spend a good amount of time getting the lengths correct

 

Chris

Redline Components Ltd, Specialist parts supplier for all Caterham Sevens and Lotus 7's 

[email protected]        01883 346515

Blue C7
Offline
Last seen: 2 hours 10 min ago
Joined: 17/04/2014

When I fitted the flexables from redline I made up a bracket as in this picture.flexible

Geoff Brown
Geoff Brown's picture
Offline
Last seen: 1 hour 7 min ago
Joined: 17/04/2014

I have been seriously considering changing to rear flexi hoses this winter. I would rather leave the bulk of the solid pipe attached to the de Dion & three way connector just having short hoses similar to the front hoses connected outboard from the rigid pipe to the caliper.

To me that solution looks more elegant & it is the same sort of thing I always found on aircraft.

I believe there was a parts list about for that type of mod. It is just the thread & size spec for the connector at the caliper end & same at the inner hose end. Any one have info on this?

Either way up access is a slight issue but there are so many 'widgets' about (drill extensions, in situ pipe flaring tool) that it should not be too much of a problem.

 

 

John Vine
John Vine's picture
Offline
Last seen: 53 min 49 sec ago
Joined: 17/04/2014

Hi Geoff,

I think your proposal is a very neat idea. 

The CC hoses I used (S3) came from Goodridge. The short one (77201L) looks like this, but both short and long have the same connectors:

At the calliper end:

Adaptor (1/8” BSP to M10 x 1.0)

https://www.goodridge.co.uk/products/goodridge-bsp-male-to-metric-male-adaptors?_pos=64&_sid=3e6b39b64&_ss=r&variant=34150034823

This connects to the hose via a swivel fitting (-03 hose, 1/8” BSP thread):

https://www.goodridge.co.uk/collections/bsp-re-usable-fittings-for-600-series-hose/products/straight-reusable-bsp-female-fitting?variant=34946256903

Then, at the 3-way, there's what Goodridge call a "bulkhead" fitting (-03 hose, 3/8” x24 UNF) -- like this but longer:

https://www.goodridge.co.uk/collections/jic-unf-re-usable-fittings-for-600-series-hose/products/jic-male-fitting-convex-seat?variant=34946184647

Hope that helps!

JV

 

John Vine
John Vine's picture
Offline
Last seen: 53 min 49 sec ago
Joined: 17/04/2014

Re #23:

Resurrecting this old thread, does anyone know if the possibly short hoses, if one has the watts linkage, issue has been addressed?

I fitted CC-supplied S3 hoses to my R400D (with Watts links).  They were long enough, but I was concerned about how to prevent the hoses rubbing against the de Dion brackets.  One neat solution was to fit 45-deg elbows to the callipers.  I ended up fitting rubber sleeves (similar to Blue C7 in #26). 

Discussion here.

JV

Geoff Brown
Geoff Brown's picture
Offline
Last seen: 1 hour 7 min ago
Joined: 17/04/2014

JV - Cheers!

john milner
john milner's picture
Offline
Last seen: 3 hours 56 min ago
Joined: 17/04/2014

Solid pipes at the rear do not need to move a lot. Hoses will need to be replaced periodically. I would guess that a rear hose is more likely to fail than a pipe.