Drumster Posted October 11, 2018 Share Posted October 11, 2018 I've finally decided to get around to making this change. The parts have arrived from Redline. So are there any tips and tricks or even gotchas that I need to be aware of? I'll also be changing the existing hose from chassis to tube as well. Link to comment Share on other sites More sharing options...
rj Posted October 11, 2018 Share Posted October 11, 2018 Is this for the whole car or just for the DeDion tube? Link to comment Share on other sites More sharing options...
Drumster Posted October 11, 2018 Author Share Posted October 11, 2018 Rear only Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted October 11, 2018 Member Share Posted October 11, 2018 I asked the factory if they knew of any disadvantages of flexible hoses for road cars. They didn't, and didn't mention any hints or precautions for changing to them.Jonathan Link to comment Share on other sites More sharing options...
michaelf Posted October 11, 2018 Share Posted October 11, 2018 I did this over the winter, I used the Caterham supplied ones, I found that the hoses were a bit tight on length for easy routing, they were routed behind the watts-link bracket, protected with some rubber hose and secured with a tie-wrap. Have a look at -https://www.lotus7.club/forum/techtalk/r400d-routing-braided-rear-brake-hoses-around-watts-linksPost #11 Link to comment Share on other sites More sharing options...
Tazio Posted October 11, 2018 Share Posted October 11, 2018 Try fitted mine, not happy with any route around the radius arm mount, found them too tight and liable to chafe., took them off again til another day. Think using a piece of old hose as a sleeve to protect them is right way to go. Link to comment Share on other sites More sharing options...
John Vine Posted October 11, 2018 Share Posted October 11, 2018 I was about to describe what I did only to discover that michaelf has already posted a link to my earlier thread! That saved me some searching, so thanks.Chris, if your car doesn't have Watts links, I guess the routing problem doesn't really arise as your radius arm is lower.JV Link to comment Share on other sites More sharing options...
Wrightpayne Posted October 11, 2018 Share Posted October 11, 2018 I got parts from Demontweeks ages ago and made them up myself - fit perfectly.I guess its another case of caterham ignoring customer feedback and ploughing on with how theyve always done it ( the k dry sump kit always had shortages of essential bits despite feedback!)My suggestion to Tazio was to get a new long hose made up using fittings from the short hose. Then shorten the original long hose to make a new short hose IYSWIM.Ian Link to comment Share on other sites More sharing options...
Drumster Posted October 11, 2018 Author Share Posted October 11, 2018 Thanks guys. No watts-link on mine just radius arms mounted in lower position. I'll see how it goes with routing and consider making a longer hose as suggested. Link to comment Share on other sites More sharing options...
Sim Posted October 12, 2018 Share Posted October 12, 2018 Look at the order things are done in the assembly guide - some bits rotate and other bits don't.My old DeDion tube had the pipes just tie-wrapped in place. The current DeDion is drilled to pop rivet the pipes/hoses in place. Simon Link to comment Share on other sites More sharing options...
simonhar Posted October 14, 2018 Share Posted October 14, 2018 So I have a 2002 SV with solid brake pipes tie wrapped to the De Dion (self build)-this always looked crude but seems to work- what, if anything, is the advantage to changing to flexible hoses? Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted October 14, 2018 Member Share Posted October 14, 2018 ... what, if anything, is the advantage to changing to flexible hoses?It feels all wrong that the safety critical pipes and junctions undergo mechanical loads without some flexibility.But I have no idea how often it causes a problem in practice.Previous discussion.Jonathan Link to comment Share on other sites More sharing options...
simon_h Posted October 14, 2018 Share Posted October 14, 2018 Changing to flexis, even just at the allows the sliding calliper to do just that. It's restricted by the solid pipes going to it. When I put a 7 into IVA a couple of years back it was put as a note that it has solid pipes. Apparently it is (or was) an ongoing discussion between vosa and cc as vosa don't agree with it. Link to comment Share on other sites More sharing options...
Drumster Posted October 14, 2018 Author Share Posted October 14, 2018 Job done this week end. Having inspected the old solid lines they still look in perfect condition not bad considering they're are nearly 26 years old. As has been mentioned before the inner pads wear much more than the outers as with fixed lines the caliper appears not to slide. My outers looked almost unworn after 21k miles/8 years. Link to comment Share on other sites More sharing options...
John Vine Posted October 14, 2018 Share Posted October 14, 2018 When I put a 7 into IVA a couple of years back it was put as a note that it has solid pipes. Apparently it is (or was) an ongoing discussion between vosa and cc as vosa don't agree with it. It hurts to say this, but I suspect the problem is that CC tend not to appreciate external criticism of their engineering. It rather reminds me of the time, 14 or 15 years ago, I drew CC's attention (together with compelling evidence, I might add) to a design flaw in the way clutch release bearing (CRB) pre-load was implemented on cable-clutch cars, and pointing out that the shortcoming could well lead to premature CRB failure (or worse).Rather than responding “hey, that’s an interesting hypothesis, we’ll look into it and let you know”, they replied to the effect that they’ve been doing it that way for years without significant problems. So, it was revealing when, soon afterwards, they decided to change to a different CRB rather than fix the basic engineering.PS: I'm 100% with VOSA on the brake-pipe issue.JV Link to comment Share on other sites More sharing options...
Tazio Posted October 14, 2018 Share Posted October 14, 2018 Chris, Any pics of the final result?? Link to comment Share on other sites More sharing options...
Drumster Posted October 14, 2018 Author Share Posted October 14, 2018 Alan, Now you ask ....No photos but I'm hoping to change the brake fluid (what's left) and bleed the brakes during the week so I'll post some piccies then. Currently new hoses follow the same path as the rigid lines i.e. under the radius arm (I don't have Watts Links) Link to comment Share on other sites More sharing options...
Tazio Posted October 14, 2018 Share Posted October 14, 2018 Thanks Chris, be good to see them. Link to comment Share on other sites More sharing options...
7 wonders of the world Posted October 14, 2018 Share Posted October 14, 2018 I routed mine around the back of the radius arms, also used banjo unions for a better fit though this was down to a caliper change.You could always use the SV hoses on an S3 ...? Link to comment Share on other sites More sharing options...
elie boone Posted October 15, 2018 Share Posted October 15, 2018 I am all for flexible hoses but a simple cure with solid brake lines would be to have a loop in the solid brake line close to the caliper. Link to comment Share on other sites More sharing options...
p.mole1 Posted October 15, 2018 Share Posted October 15, 2018 I made my own hoses but put some heat shrink onto any parts that come into contact with any painted surfaces.I would also use a fitting on the end of the solid line to retain the brake fluid in your system when you disconnect it from the tee piece.Also when bleeding the system I bleed the air out by loosening the fitting on the caliper to remove the air from the brake line to avoid getting air trapped in the caliper. Link to comment Share on other sites More sharing options...
7 wonders of the world Posted October 15, 2018 Share Posted October 15, 2018 #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 - Link to comment Share on other sites More sharing options...
ScottR400D Posted July 30, 2020 Share Posted July 30, 2020 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? Link to comment Share on other sites More sharing options...
Tazio Posted July 31, 2020 Share Posted July 31, 2020 As I understand it, the Redline supplied hoses are longer than the ones CC supply. Link to comment Share on other sites More sharing options...
Red Line Components Posted July 31, 2020 Share Posted July 31, 2020 There are flexible hoses for S3 and S5 cars here at Redline, we spend a good amount of time getting the lengths correct Link to comment Share on other sites More sharing options...
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