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Did I buy the wrong microbore pipe?
Mark Allanson - 29/5/04 at 09:49 PM

I bought a reel of 8mmx0.6mm microbore for my fuel lines, but the bloody stuff is totally unbendable, I bought a screwfis small bender for the job, but all it does is neatly crush the pipe, rather than the complete hash of bending it over a socket


ady8077 - 29/5/04 at 10:20 PM

Hi Mark

I've used 8mm microbore, didn't use a bender though just my hands. Didn't try to bend it to tight and i could feel it stiffening up as it bent

Adrian


RoadkillUK - 29/5/04 at 10:28 PM

You can buy a bending tool, it's a spring that fits around the pipe (as opposed to the internal one for larger pipes). I used one myself and it did a very nice job.

Can't find a bleedin' link to one, sorry.


Mark Allanson - 29/5/04 at 10:28 PM

The stuff I have will not bend at all without flattening, did you have 0.6mm wall thickness?


Avoneer - 29/5/04 at 10:55 PM

Don't know exactly what Tiger supplied, but it helped leaving it in the warm airing cupboard until required!
Pat...


mangogrooveworkshop - 30/5/04 at 07:36 AM

quote:
Originally posted by Mark Allanson
I bought a reel of 8mmx0.6mm microbore for my fuel lines, but the bloody stuff is totally unbendable, I bought a screwfis small bender for the job, but all it does is neatly crush the pipe, rather than the complete hash of bending it over a socket

Macspeedy tol me the other day that those small pipebenders need modifyied to fit the pipe in instead of on top the former. If they have paint or powdercoat in the groove this causes the hassel.
Said he cleaned it out with a small round file to make the pipe sit in the former.
hope that helps.


britishtrident - 30/5/04 at 08:13 AM

Try annealing the pipe where you are goping to bend it -- copper age hardens


Ferg - 30/5/04 at 08:23 AM

The microbore benders do tend to flatten the pipe if they push down rather than slide 'round. Certainly cleaning the former part of the bender helps, greasing it is good.


Peteff - 30/5/04 at 09:04 AM

0.6mm sounds thick. Did you get it from a plumbing supplier? Could you use compression fittings on it instead of bending? might be easier and could give a decent result.
http://www.indanc.com/brass-compression-fittings-01.htm#equal_elbow
Not too bad pricewise either, you'd not need many.

[Edited on 30/5/04 by Peteff]


theconrodkid - 30/5/04 at 09:42 AM

i used the plastic stuff from a fiat uno


Ferg - 30/5/04 at 11:37 AM

Hmmmm....

Microbore pipe from plumber's merchants is Table W Copper. Theoretically this isn't so good with conventional compression fittings which are designed for Table X.


Peteff - 30/5/04 at 02:33 PM

It's not carrying high pressure gas or hot liquid so I don't think he's going to have a problem. Can you explain the difference between the two and why it's unsuitable? The marine institute seems to think it's o.k. to use them by the way.
Fixed Pipework should be made of either solid drawn Copper tube made to BS 2871 pt1 table W, X, Y, Z, (now EN1057)
All joints and unions should be kept to a minimum as the less joints, the less potential sources of leakage. They should be readily accessible for visual inspection and should be of the compression type not soldered.

[Edited on 30/5/04 by Peteff]


Mark Allanson - 30/5/04 at 06:06 PM

I think I'm going to flip a Uno in the local scrappy, this microbore is so fraglie, I don't think I would feel safe driving. You can flatten it between finger and thumb!

Thanks for all the answers though

Mark

(Syd - still taking it all in, will email when understood!thanks)


theconrodkid - 30/5/04 at 08:07 PM

mark,the uno runs inside the o/s sill,found that out welding one up


Mark Allanson - 30/5/04 at 08:17 PM

Yes, been there, NEARLY done that!


NS Dev - 31/5/04 at 08:04 AM

Ahhh, like the straightener idea Syd! Was that two rolls one side and one the other with an adjuster to alter the pressure on the third roll? Might have a go at that, would look neater in the end!

Yes, I use the 5/16 copper-nickel that you mentioned as well (have never actually used microbore though that's not to say there's owt wrong with it!!) the benefit of the copper nickel is that it doesn't work harden so fast (and it's stronger but that doesn't really matter in this instance)

[Edited on 31/5/04 by NS Dev]


mad4x4 - 9/6/04 at 09:54 AM

I used rubber fuel hose and run it inside the tunnel with pclips. (8mm)


stephen_gusterson - 9/6/04 at 10:25 AM

quote:
Originally posted by mad4x4
I used rubber fuel hose and run it inside the tunnel with pclips. (8mm)


so did I eventually. Some say that it will leak fumes into the tunnel, but mine isnt doing that. Plus I recon a right breeze is gonna go down the tunnel during driving anyways!

atb

steve


Terrapin_racing - 9/6/04 at 11:18 AM

I use these guy's

http://www.thinkauto.com/

lots of choice

or if your flush

braided stainless from
http://www.speedflow.co.uk

[Edited on 9/6/04 by Terrapin_racing]


James - 9/6/04 at 12:16 PM

I bought the plastic coated aluminium stuff from Tifosi. God knows why as it cost a bloody fortune!

Bends well and looks nice though!

James