johnston
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 posted on 15/12/02 at 08:05 PM |
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chassis steel
went round and asked a few boys bout the best place to get steel was told
"very few places keep box in 16swg 2mm is the standerd"
and the 16swg he had 3/4inch box was very thin
have we got our wires crossed somewhere
is 16swg enough or is every1 usin 2mm stuff thinkin its 16swg??????
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philgregson
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| posted on 15/12/02 at 09:46 PM |
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One inch (or 25mm) 16 guage is pretty common - and it really is 16 guage not 2mm (16 guage is 1.6mm by a happy coincidence).
I'd probably ask someone who knew what they were talking about - any large steel stockist should have shelves full of the stuff.
There is another post in similar vein on here (can't remember where) and I think the conclusion then was that someone was trying to offload some 2mm
on an unsuspecting punter by telling them that that was what they really needed.
Phil
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johnston
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| posted on 16/12/02 at 07:22 AM |
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this guy wasnt tryin to sell it told me a few paces he gets stuf from and who'd be best for the thinner stuff who isnt his usual supplier
and its his job fabricating stuff for farm machinery and was weldin plates for a tank of some kind (for slurry or sumit) so i think he'd know his
stuff
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interestedparty
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| posted on 16/12/02 at 07:40 AM |
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I should think he knows his stuff about farm machinery which is well known for it's robustness. However, attention to overall weight is not a factor
of farm equipment design.
The simple fact of the matter is that, for cars like ours, 2mm wall steel is WRONG and 1.6mm (16g) is RIGHT
John
As some day it may happen that a victim must be found,
I've got a little list-- I've got a little list
Of society offenders who might well be underground,
And who never would be missed-- who never would be missed!
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Alan B
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| posted on 16/12/02 at 02:16 PM |
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A lot of this is uncles Ron's fault, getting everyone to ask for RHS which doesn't even start until 2.5mm wall.
What we need is ERW square tube, NOT RHS, or SHS, or box section.
To everyone: Do not be fobbed off with the wrong stuff...go somewhere else if necessary.
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RichieW
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| posted on 16/12/02 at 02:36 PM |
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Alan B.
What does "ERW" stand for? Just in case the Stockholder doesn't know what I am asking for.
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David Jenkins
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| posted on 16/12/02 at 02:54 PM |
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ERW = Electric(al) Resistance Welded
A flat strip is bent into a rectangular tube and the edges welded by passing a massive current across them.
Easily recognised, as one side will have a blue-black stripe along its length, where the weld is. Inside the tube you will see a bump made of weld
metal.
I agree with Alan - Ron C was too sloppy when he specified materials.
rgds,
David
[Edited on 16/12/02 by David Jenkins]
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RichieW
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| posted on 16/12/02 at 03:03 PM |
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Cheers! I had a heated discussion with my Steel Plater mate over a beery weekend. He started mentioning 3mill RHS and so I tried to tell him how to do
his job and that we weren't building a tank!
It all makes sense now that I know I have been misinformed and he was just trying to be helpful.
I am getting worried. Did Uncle Wrong get anything right in that book I paid 20 quid for?
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Alan B
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| posted on 16/12/02 at 03:14 PM |
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Ritchie, if your steel guy doesn't know what ERW is, get out of there quickly...
Ron?
Yes, he got us all motivated........
For that I am thankful, even though I'd built cars before, it got me interested again.
IMO, the book is a bit like having an Escort workshop manual for a Cavalier.....yes a lot a basic principles are similar but a lot of important detail
is either wrong, or missing...leaving you to ask questions
David, is that a fair analogy?
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Alan B
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| posted on 16/12/02 at 03:57 PM |
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I better add, before I'm accused of excessive Ron bashing, that some of the problem is down to lack of Escort and Cortina bits, plus the fact that
half of us want to do something different anyway...
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RichieW
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| posted on 16/12/02 at 04:02 PM |
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Alan, he was arguing that he had never heard of 1.6mill (16 gauge) RHS and so consquently thought I must have got it wrong and that I had really meant
something thicker i.e 3mill. From previous posts in this topic that sounds about right.
In his defence he hasn't seen the drawings properly has only heard about the specs secondhand from me in the pub and never works on anything this
delicate in his day to day work.
I'm sure he'll come through for me once he gives everything the once over. I'm looking to use Mcsorley's book plans. I Don't trust Ron's
writings anymore.
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RichieW
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| posted on 16/12/02 at 04:05 PM |
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Would like to add that I haven't had the opportunity to ask about ERW with my Plater friend at all. I may give him a quick test tonight though.
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Alan B
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| posted on 16/12/02 at 04:20 PM |
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Yes, Jim's (Mc Sorley) plans are good. He took the book design and corrected all the errors, and offered other versions.
Jim lives just up the road from me.....about 70 miles...
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theconrodkid
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| posted on 16/12/02 at 06:25 PM |
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so has chairman ron been deposed in a bloodless coup and been replaced by chairman Jim?
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Alan B
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| posted on 16/12/02 at 07:22 PM |
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Basically, what Jim did was just turn Ron's frame "design" into something manufacturable straight from the print...i.e. without the anomalies...
It seems that the Avon book is full of "anomalies" too......
I mean come on, the things have been made...how hard is it to put it onto paper accurately?
Still what do I care
How's your build coming on Conrod?
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johnston
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| posted on 17/12/02 at 11:17 PM |
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right ive been away for a few days
am i right in sayin i should ask for 1inch or 25mm 16swg ERW????
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stephen_gusterson
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| posted on 17/12/02 at 11:26 PM |
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looks like that 2 me.
I bought 2 sets of rhs. (needed 3 more bits).
First lot was 16g 1 inch. second was 2mm walled 25mm. (no imbalance in the structure in case anyone points that out!) I was told that 2mm was smallest
srock at corus - perhaps thats cos I asked for rhs and not erw.......
The 2mm stuff had no sign of a weld so I guess its extruded?
atb
steve
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