jps
|
| posted on 18/10/17 at 03:18 PM |
|
|
Straightening brake pipe - what's the trick?
I have a coil of kunifer which I am shaping into my brake lines. Are there any tricks to getting the straight bits REALLY straight when I uncoil it?
I'm doing all the bends by hand - which seems to work really well with no kinking - but just can't smooth out the straight sections
nicely... 
|
|
|
|
|
gremlin1234
|
| posted on 18/10/17 at 03:27 PM |
|
|
lay it on a table and roll it with your hands
|
|
|
jps
|
| posted on 18/10/17 at 03:33 PM |
|
|
quote:
Originally posted by gremlin1234
lay it on a table and roll it with your hands
Damnit - I was hoping for somehting that can be done *after* i've put all the necessary bends in a piece already...
|
|
|
nick205
|
| posted on 18/10/17 at 03:37 PM |
|
|
Had the same issue with my brake lines. Got them reasonably straight, but ruler straight would have been ideal!
Rolling on a flat table seems a good enough suggestion, but before you've done the forming work.
|
|
|
designer
|
| posted on 18/10/17 at 03:57 PM |
|
|
I drill a hole, a little larger than the tubing, in a thick piece of wood and then pull the tubing through it. The thicker the wood the better. Works
well.
|
|
|
jps
|
| posted on 18/10/17 at 04:15 PM |
|
|
quote:
Originally posted by designer
I drill a hole, a little larger than the tubing, in a thick piece of wood and then pull the tubing through it. The thicker the wood the better. Works
well.
The one thing I had thought of - but not tried yet. So basically a like a wire pulling die then... I should have known that school trip
to http://www.wintwire.co.uk/ in the late 1980's would prove useful after all!
|
|
|
loggyboy
|
| posted on 18/10/17 at 06:14 PM |
|
|
Just work your way along curving it the opposite way to the current curve. Do about 40-50cm at a time, and just do it bit by bit.
Did my larger radi by hand, and tighter ones with a tool.
Mistral Motorsport
|
|
|
mackei23b
|
| posted on 18/10/17 at 08:09 PM |
|
|
As above with loggyboy
here are some of mine
.jpg) .jpg)
Rescued attachment 2nd Jan 06 (Brake line).jpg
Cheers
Ian
|
|
|
owelly
|
| posted on 18/10/17 at 08:28 PM |
|
|
Have a look for pyro straighteners.
http://www.ppcmag.co.uk
|
|
|
nick205
|
| posted on 19/10/17 at 07:55 AM |
|
|
"loggyboy" and "mackei23b" - very neat looking pipework!
Mine didn't look quite so neat, but did work perfectly well.
 
Front brake pipe routing
|
|
|
shindha
|
| posted on 19/10/17 at 08:02 AM |
|
|
The easy option or alternatively a hole through a piece of wood and pull through.
Sealey Brake Pipe Straightener VS5056
|
|
|
Irony
|
| posted on 19/10/17 at 11:13 AM |
|
|
Doesn't CBS sell a straightener?
|
|
|
stevebubs
|
| posted on 19/10/17 at 12:01 PM |
|
|
toolage...
https://www.frost.co.uk/catalogsearch/result/?q=pipe%20straightener
|
|
|
jps
|
| posted on 19/10/17 at 12:42 PM |
|
|
I'm going to try a locost method to make a suitable die first - two blocks of wood clamped together and as close to a 5/16 hole drilled through
at the join using the pillar drill :-D
|
|
|
coyoteboy
|
| posted on 19/10/17 at 02:45 PM |
|
|
I suggest cognitive behavioral therapy to reduce the effects of your OCD and let you get on with building a car 
|
|
|
loggyboy
|
| posted on 19/10/17 at 03:30 PM |
|
|
quote:
Originally posted by jps
I'm going to try a locost method to make a suitable die first - two blocks of wood clamped together and as close to a 5/16 hole drilled through
at the join using the pillar drill :-D
Suspect the 'memory' will make it curve back slightly. Might be good to start it off, but finish off will most likely need to be
byhand/eye. Also if its that bent (beyond the loops it came in) it will have already work hardened and if too many movements are put through it will
kink or loose roundness.
Mistral Motorsport
|
|
|
Theshed
|
| posted on 19/10/17 at 05:17 PM |
|
|
quote:
Originally posted by coyoteboy
I suggest cognitive behavioral therapy to reduce the effects of your OCD and let you get on with building a car
Harsh but true....
 
Description
|
|
|
Charlie_Zetec
|
| posted on 20/10/17 at 09:26 AM |
|
|
quote:
Originally posted by stevebubs
toolage...
https://www.frost.co.uk/catalogsearch/result/?q=pipe%20straightener
I've got two of the KwixUK straighteners as listed on the website above, and they're brilliant bits of kit. I've done a handful of
Land Rover Defender brake runs for myself and friends, larger clutch pipe, as well as some brake bits for the kit.
They're not cheap, but they do make the job look professional when you stand back and admire.
And yes, I also agree with the OCD thing - but I wouldn't have it any other way!
Artificial intelligence is no match for natural stupidity!
|
|
|
jps
|
| posted on 20/10/17 at 11:13 AM |
|
|
quote:
Originally posted by Theshed
quote:
Originally posted by coyoteboy
I suggest cognitive behavioral therapy to reduce the effects of your OCD and let you get on with building a car
Harsh but true....
Description
Yeah - probably I should have said " getting the straight bits ANYWHERE NEAR straight" to be honest - although I do like to measure thrice
cut once...! I'm pretty sure my slow progress with the car is actually down to the (lack of) available time I have rather than actual
diagnosable psychological problems! 
|
|
|
rdodger
|
| posted on 20/10/17 at 03:41 PM |
|
|
I did see a Locost way. It involved a vice, a hammer and some brake pipe!
|
|
|
coyoteboy
|
| posted on 22/10/17 at 06:56 PM |
|
|
quote:
Originally posted by Theshed
quote:
Originally posted by coyoteboy
I suggest cognitive behavioral therapy to reduce the effects of your OCD and let you get on with building a car
Harsh but true....
Description
To be fair, that's beautiful. I have similar tendencies but less patience.
|
|
|
Mike Bentley
|
| posted on 1/11/17 at 04:11 PM |
|
|
As said earlier beware of work hardening.
|
|
|
johnH20
|
| posted on 1/11/17 at 06:41 PM |
|
|
I have not seen it mentioned but recommended to me by someone on here. Straighten as best you can by hand and then roll between two planks of wood.
Becomes truly straight quite quickly. Belated thanks to whoever came up with the idea.
|
|
|
.jpg){kind=avatar}
.jpg)
