001Ben
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| posted on 30/10/11 at 03:11 PM |
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Rollcage Side Protection
I currently have a 47mm cage fitted to the car , made form cds tube. I am looking for a little bit of side protection and purchased some tube to bend
. Everytime i tried to bend it using the hydraulic pump ( machine mart type ) the pipe kinks, does anyone have any ideas how i can stop this from
happening ?
Does the side protectiuon need to be this big, wouldIi be able to bend it any easier if i dropped down to 38mm/32mm? I am tying to avoid taking it
somewhere to be bent as i am not too sure of the angle i want the bar.
[Edited on 30/10/11 by 001Ben]
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gingerprince
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| posted on 30/10/11 at 03:31 PM |
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Don't you fill the tube with sand before bending to keep it from kinking?
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Ivan
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| posted on 30/10/11 at 03:32 PM |
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Not sure if this helps - bend it yourself ignoring the kinks until you get it exactly right then take straight pipe to professional benders and it get
it bent right to the sample you bent up (without the kinks this time)
Alternatively fill pipe with dry sand, weld up ends and then try bending it.
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MikeR
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| posted on 30/10/11 at 03:46 PM |
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machine mart sells a pipe bender. You've got cds tube. Their is a difference and hence it kinks.
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001Ben
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| posted on 30/10/11 at 04:46 PM |
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quote:
Originally posted by MikeR
machine mart sells a pipe bender. You've got cds tube. Their is a difference and hence it kinks.
Ok,so what pipe/steel can a pipe bender bend and what is the best method to bend CDs at home.
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MikeR
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| posted on 30/10/11 at 05:03 PM |
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pipe benders bend pipe - the difference is how they're measured. Its something like (ie i'm not 100% sure). Pipe is measured by the ID of
the tube and their is an expected thickness to the steel depending on the pipe size. Tube is measured by the OD and will cope with a few difference
sizes of thickness.
ID = inside size - the empty space in the middle.
OD = the outside size measured directly from one side to the other.
To bend tube you need a tube dies if you're doing it properly. You *may* (again i'm not 100% sure but have heard it mentioned on here etc)
get away with filling a tube with kiln dried sand, fixing both ends (gaffer tape is supposed to work for thin wall - you'll possibly have to
weld). Make sure the bend is a bit away from the end and then try using the hydralic bender with a pipe die in. Don't try to bend too acute an
angle if you're doing this. You make find you have to heat the pipe which will take a LOT of heat & then it weakens it making it (i think)
technically illegal for motorsports as its annealed and not cold drawn any more.
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Rod Ends
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 posted on 30/10/11 at 05:07 PM |
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Tube bending with a Machine Mart pipe bender (with sand):
www.youtube.com/watch?v=GWT3N3m4bE4
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001Ben
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| posted on 30/10/11 at 07:27 PM |
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ok, sounds like i may have yo take it somewhere to be bent then if i want to keep the strength as it needs a bend about 120 degrees in it
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Talon Motorsport
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| posted on 30/10/11 at 07:39 PM |
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Machine Mart sell PIPE benders not TUBE benders, the formers are far too flaired to bend thin walled tubing. The biggest tube former you will find is
a 42mm hilmor/record conduit former. The formers are deep unlike the cheap pipe ones and hold the side walls of the tube stopping it from spreading
and kinking.
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