locoboy
|
 posted on 9/2/04 at 12:53 PM |
|
|
brake pipes
Hi
What is the size of the brake pipe that is generaly used when using m16 calipers? and rear sierra drums?
I know its still quoted in inches. Im at work and will be making a few calls later on to price up brake pipe and unions and need to know the preferred
size.
PS what is Cunnifer?
ATB
Locoboy
|
|
|
|
|
theconrodkid
|
| posted on 9/2/04 at 01:12 PM |
|
|
copper pipe is 3/16
who cares who wins
pass the pork pies
|
|
|
locoboy
|
| posted on 9/2/04 at 01:32 PM |
|
|
cheers conrod.
ATB
Locoboy
|
|
|
theconrodkid
|
| posted on 9/2/04 at 01:37 PM |
|
|
no probs,jus getting my count up,btw there are hard and soft types,soft is a darn suite easier to work with
who cares who wins
pass the pork pies
|
|
|
flak monkey
|
| posted on 9/2/04 at 01:41 PM |
|
|
Do you mean Kunifer?
If so its a 90% copper 10% nickel pipe. Often used for brake pipes as it doesnt collapse as easily as normal copper stuff and it doesnt work harden as
quickly, so if you make a mistake you are more likey to be able to bend the pipe back without breaking it.
Its more expensive than copper pipe, but probably worth it. Think its about £20 - 25 a roll.
Cheers
Sera
http://www.motosera.com
|
|
|
locoboy
|
| posted on 9/2/04 at 01:45 PM |
|
|
Yes Kuniffer!
I saw somw on e-bay and it was spelt with a "C", never heard of it before, sounds like good stuff, its already sold though. 
ATB
Locoboy
|
|
|
Mark Allanson
|
| posted on 9/2/04 at 10:53 PM |
|
|
Kuniffer is a darker brown colour, it does not go green like pure copper and has a higher pressure rating, it is harder to work.
Copper lasts at least 25 years, has sufficient rating and will bend around any 1" ERW you have.
Oh, it's not 3/16, its 4.75mm same as 1" ERW is now 25.4mm ERW!
If you can keep you head, whilst all others around you are losing theirs, you are not fully aware of the situation
|
|
|
MarkL
|
| posted on 9/2/04 at 11:27 PM |
|
|
For brake pipe unions you can get them at most car shops, but if you have a Partco or similar big motor factor near by, you can get a bag full for the
same price as buying them in singles.
When you have finished just sell the rest on.
I did this and they cost almost nothing, or see if anyone local wants to go half.
You have not metioned the flaring tool there are a number of comments if you search for it under Brake Flaring some good tips as well.
Most people go for the machine mart one although there are many others.
Mark
|
|
|
craig1410
|
| posted on 9/2/04 at 11:32 PM |
|
|
Mark,
Does that mean that you recommend the Copper or the Kuniffer stuff? I have used both in the past and the copper stuff is certainly easier to bend but
does it not give a softer pedal when used for the entire length of the car? I'm sure I read that somewhere and that it was only recommended for
use in short lengths for repair of corroded pipes.
Also, is it okay to just bend the pipe using both thumbs or does this crush the tube? What sort of radius is minimum for 3/16" tubing?
Cheers,
Craig.
|
|
|
eddymcclements
|
| posted on 10/2/04 at 07:29 PM |
|
|
Kunifer also has some iron in it, hence the name:-
Ku = copper
Ni = nickel
Fer = iron
It's readily available in good motor factors or brake specialists and dead cheap - I think I paid 8 quid for a 25ft roll.
You won't get a soft pedal with copper - it doesn't swell appreciably (as would a rubber hose) which is what causes a soft pedal feel,
assuming you've bled the air from your system properly.
You can bend either with your fingers down to about a 1" radius, but you need to be careful not to kink the tube - bend it round a former or get
some cheap brake pipe pliers from Halfords which have a rubber former built in to them.
Cheers,
Eddy
|
|
|
craig1410
|
| posted on 10/2/04 at 07:39 PM |
|
|
Eddy,
Thanks but what about corrosion resistance? Which is best?
Cheers,
Craig.
|
|
|
Mark Allanson
|
| posted on 10/2/04 at 08:39 PM |
|
|
Kunifer is definately the best, superb corrosion resistance and less likely to strees crack.
If you are going to use your locost in the acid swamps on the planet Zarg go for kunifer, if your chassis is pin jointed, has no suspension and will
be used exclusivley on Belgian pave roads you will need kunifer. Copper is easily more than adequate for normal use and will last well beyond the
point when all the petrol has run out. The pedal is totally unaffected by the type of static pipe you use as neither copper, kunifer, or steel have
any flexibility. the pedal only being affected by the flexies (and the rear shoe adjustment!)
As you have probably guessed, I am using copper.
If you can keep you head, whilst all others around you are losing theirs, you are not fully aware of the situation
|
|
|
craig1410
|
| posted on 10/2/04 at 10:14 PM |
|
|
Mark,
Thanks for that, I'll see what's available when I go looking but either seems to be suitable. Of the two I think that pure copper looks
better as the kunifer has a sort of unpolished brass look to it if I remember correctly. I expect that the copper will form neater flares especially
when using the cheaper machine mart style flaring tools.
Copper it is I think!
Cheers,
Craig.
|
|
|
Mark Allanson
|
| posted on 10/2/04 at 10:20 PM |
|
|
I've got a Sykes type flaring tool which will even flare steel pipes neatly, cost nearly £100 about 6 years ago though. I also have a 'on
the car' bluepoint (snapon) set which is a total waste of rollcab space.
If you can keep you head, whilst all others around you are losing theirs, you are not fully aware of the situation
|
|
|
