Matthew_1
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| posted on 23/11/03 at 11:07 AM |
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Sealing end of chassis tubes
Can I ask how anyone has sealed the open end of chassis tubes? I did think of either welding in a plate - which seemed a faff, or else using some of
that expanding foam you use around masory?
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JoelP
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| posted on 23/11/03 at 01:35 PM |
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i weld plates on the end. some use square plastic stoppers. i think there is a reason not to use expanding foam, maybe fumes but i cant remember. it
is indeed a faff cutting squares and welding them on though, and it leaves a raised bit to complicate the panelling.
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stephen_gusterson
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| posted on 23/11/03 at 02:37 PM |
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I also welded on squares.
its the way that the company I work for makes up frames for conveyor systems.
one might be a faff, but the other is kinda bodgy....
There isnt a huge amount of open ends to deal with anyway...
atb
steve
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Alan B
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| posted on 23/11/03 at 03:13 PM |
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Ok guys...being thick here...
What's faff?
I've heard of "faffing around"...i.e. making a meal of something....
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Ben_Copeland
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| posted on 23/11/03 at 03:29 PM |
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Thats the faff he meant ..........
This has been covered recently... you can weld in sheet, or use plastic plugs and seal them in. Up to you
Ben
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blueshift
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| posted on 23/11/03 at 04:04 PM |
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I think until I get bored of the idea I will try welding squares into the ends (rather than onto). one way of holding them in could be to weld a bit
of wire across the middle to hold it in while it was tacked, then grind it off. or maybe glue or solder..
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Alan B
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| posted on 23/11/03 at 04:27 PM |
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A couple of little magnets works well to hold them while you tack...
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theconrodkid
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| posted on 23/11/03 at 05:18 PM |
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use your fingers to hold it in place
who cares who wins
pass the pork pies
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Alan B
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| posted on 23/11/03 at 05:25 PM |
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Fingers are great for ON the end....
but I was meaning IN the end...where you might lose 'em....
Oh and just tack and remove the magnets quickly...don't let them get hot...affects the magnetism...
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RoadkillUK
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| posted on 23/11/03 at 07:32 PM |
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We welded bits of the old escort roof onto the end of ours, there's 2 of use so my brother held the piece in place with an adjuster (hammer) and
I welded them on.
Oh, then he grinded down the crap welds 
Roadkill - Lee
www.bradford7.co.uk
Latest Picture (14 Sept 2014)
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Mark Allanson
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| posted on 23/11/03 at 09:44 PM |
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The open end of chassis tubes are the weakest point in the chassis, especially the top and bottom of the front panel and particularly the back of the
'A' tubes, where all kinds of stresses are present. If you don't seal them properly the tubes will try to lozenge under any loads
(integral tubes cannot do this because they are welded to another tube). It's a bit like the old shoe box analagy, if you cut the ends out, it
falls flat.
I used 25mmx3mm flat bar, cut to sized lengths to seal the tubes, its dead easy and effective.
I am not the clever clogs who thought of it, but a few years in fabrication, it what you do. Anything fron prefab roof trusses for industrial estate
type buildings, to the mullions that make up the pyramid on top of Canary Wharf (yes, that was made in Cornwall as well!)
Perhaps Cymtriks could elabotrate..............
 
Rescued attachment CappedEnds.jpg
If you can keep you head, whilst all others around you are losing theirs, you are not fully aware of the situation
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James
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| posted on 24/11/03 at 10:37 AM |
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quote:
Originally posted by Mark Allanson
I used 25mmx3mm flat bar, cut to sized lengths to seal the tubes, its dead easy and effective.
Hmmm, you've worried me now... I did mine out of 0.8mm!
James
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Ben_Copeland
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| posted on 24/11/03 at 12:05 PM |
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I wouldn't worry about it james....
Ben
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Z20LET Astra Turbo, into a Haynes
Roadster
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