35 posts / 0 new
Last post
p.mole1
Offline
Last seen: 3 weeks 2 days ago
Joined: 02/05/2016
Rear Brakes

I have just had the dedion tube, anti roll bar and radius arms powder coated and have noticed a massive problem with my rear brake calipers. My rear calipers are attached via a solid brake pipe!. I have never seen this on any car with a sliding caliper. The calipers should be attached with a flexible hose ? Firstly you have to have to remove the brake hose to change the pads and the rigid pipe will continuously being flexed due to movement of the caliper. Are all sevens like this?. I am going to try and make up a set of flexible brake lines before they crack- unbelievable?

micksmetafors
Offline
Last seen: 1 year 11 months ago
Joined: 17/04/2014

Yes, all the sevens I have built or owned are like this and never had a problem in 20 odd years.

Cheers, Steve

Wrightpayne
Wrightpayne's picture
Online
Last seen: 4 min 38 sec ago
Joined: 17/04/2014

All like that!!

I’ve converted mine to aeroquip - I can dig out my receipt and list the order items from Demon Tweeks if you’re interested in converting.

two advantages - flex as the pads wear and calipers move and if you need to dis-assemble the rear just hang the calipers up and no need to bleed.

Let me know and I’ll post up the list.

Ian

Paul Mason
Paul Mason's picture
Offline
Last seen: 2 months 1 week ago
Joined: 04/11/2017
Mine too terminate with a short rubber flexi hose (not sure how it was built mind).

New hobbies include:

1) Learning to develop a lighter right foot.  2) Learning the location of all local tunnels.  3) Learning to feed a family on the cheap as I've spent all the money on a plaything

simon_h
simon_h's picture
Offline
Last seen: 20 min 52 sec ago
Joined: 17/04/2014

All like that but IVA don't really like it. I put one through a couple of years ago and he let it go through as a known issue between Caterham and VOSA. I'd fit flexis if you can. 

7 wonders of th...
Offline
Last seen: 16 min 20 sec ago
Joined: 17/04/2014

a shocking piece of engineering from CC, they deserve to be hauled over the coals for this by VOSA.

there have been failures on race cars which i believe now have to use the flexible aeroquip rear hose.

Jonathan Kay
Jonathan Kay's picture
Online
Last seen: 12 sec ago
Joined: 17/04/2014

I thought that the rigid pipes were undesirable when I assembled my 7, so asked the factory (by 'phone in those days) and they said that it was fine: "Just follow the Guide". There might have been a hint that it was different for race cars.

And every time I've had them off since I've reassured myself with the wonderful notes from Alcester Racing 7s.

And the last time it came up here I asked the factory if flexible pipes had any disadvantages of which they were aware. They said "No".

... there have been failures on race cars

And that's just what I was about to ask.

Jonathan

 

p.mole1
Offline
Last seen: 3 weeks 2 days ago
Joined: 02/05/2016

Hi Ian thanks, I would be grateful if you could post the list of parts required to fit flexible brake lines. Did you make your own lines up? I have done this for mountain bikes, but never for a car but I'm assuming it's the same procedure. I must admit I never really took any notice of the rear brakes till I overhauled the rear end. I am surprised they are still like this! 

ChrisC
Offline
Last seen: 4 hours 30 min ago
Joined: 17/04/2014

I just used the Caterham parts the last time I did it 

https://caterhamparts.co.uk/hoses/1134-brake-hose-3-way-to-rh-rear-caliper.html?search_query=race+brake&results=465

But one of the fittings had a strange none metric / none imperial AF, I now own one witworth spanner just to complete the job.

 

Golf Juliet Tango
Offline
Last seen: 2 hours 1 min ago
Joined: 17/04/2014
If the construction instructions differ between race and road cars, that is hard to understand. If one considers the quality of tarmac on our roads, surely track surfaces are better (yes, I know that racers use a lot of kerbs too).

Stephen

Democratic dissent is not disloyalty, it is a positive civic duty

p.mole1
Offline
Last seen: 3 weeks 2 days ago
Joined: 02/05/2016

Hi Chris, thanks unfortunately  Caterham are out of stock of the short hose