(info) (80)

G

Guest

Guest
Hi Guys
I came across this site and they do the underbelly protection for the
engine/ gearbox/transfere case for around 500 euro delivered to me, if you
want to check the site out its www.jtts4x4.com I think.
John C
92HDJ 80 1HDT Ireland
 
G

Guest

Guest
I'm no engineer but I wouldn't trust 8mm of aluminium to protect any
vital bits of my 80.
Best regards,
Jon.
-----Original Message-----
From: [Email address removed] [mailto:[Email address removed]]
On Behalf Of john byrne
Sent: 12 July 2005 20:29
Hi Guys
I came across this site and they do the underbelly protection for the
engine/ gearbox/transfere case for around 500 euro delivered to me, if
you
want to check the site out its www.jtts4x4.com I think.
John C
92HDJ 80 1HDT Ireland
 
G

Guest

Guest
On 7/12/05, Jon Wildsmith <[Email address removed]> wrote:
Jon,
To achieve the same rigidity of structure, an 8mm alu sheet
(depending on the grade) is at best equivalent to a 5mm thick steel
sheet.
In terms of deflection (stiffness), the aluminum plate will yield at
around 29% greater yield strength than the "equivalent" steel plate
and will fail at around 12.5% of the ultimate strength of the
"equivalent" steel plate when flexed. In other words, inch for inch,
aluminium but much easier to break than steel but much harder to bend.
It is not necessariily a liability. I'd rather have a steering guard
that will break on impact than one so stlff that it will cause the
chassis to bend.
--
Rgds,
Roman (London, UK)
'92 HDJ80
 
G

Guest

Guest
Hi Roman,
That's useful and interesting information which I *think* confirms my
suspicion that if I drop my 3 ton cruiser hard onto a rock on the
transfer case bash plate an aluminium plate is liable to crack and
collapse where my steel one will at worst start to bend. Maybe 3 tons is
not enough to crack 8mm aluminium even with point loads though? This is
extra interesting because I know someone with a big sheet of 8mm
aluminium plate :)
Best regards,
Jon.
-----Original Message-----
From: [Email address removed] [mailto:[Email address removed]]
On Behalf Of Roman
Sent: 12 July 2005 22:21
To: [Email address removed]
Subject: Re: [ELCO] (info) (80)
On 7/12/05, Jon Wildsmith <[Email address removed]> wrote:
Jon,
To achieve the same rigidity of structure, an 8mm alu sheet
(depending on the grade) is at best equivalent to a 5mm thick steel
sheet.
In terms of deflection (stiffness), the aluminum plate will yield at
around 29% greater yield strength than the "equivalent" steel plate
and will fail at around 12.5% of the ultimate strength of the
"equivalent" steel plate when flexed. In other words, inch for inch,
aluminium but much easier to break than steel but much harder to bend.
It is not necessariily a liability. I'd rather have a steering guard
that will break on impact than one so stlff that it will cause the
chassis to bend.
--
Rgds,
Roman (London, UK)
'92 HDJ80
 
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G

Guest

Guest
Hi Roman
Where do you keep all the info you have. Geese I cant remember what I had
for breakfast sometimes which can be a real problem if you are on a diet ,
not saying I am or am not but you know what I mean. I wish I had even a bit
, a tiny bit of what you know about mechanics. Now are the alu bits worth
buying or should I wait and try to get steel bits made up somewhere.
Correct me if im wrong, the alu will be very good at protecting from slow
moving objects and will be no good when impacted by say a rock , but if
this rock was slowly driven over by a careful driver like me the Alu would
be better YES. Just another decision to make for me how I love this.
John C
92HDJ 80 1HDT Ireland
----- Original Message -----
From: "Roman" <[Email address removed]>
To: <[Email address removed]>
Sent: Tuesday, July 12, 2005 10:21 PM
Subject: Re: [ELCO] (info) (80)
On 7/12/05, Jon Wildsmith <[Email address removed]> wrote:
Jon,
To achieve the same rigidity of structure, an 8mm alu sheet
(depending on the grade) is at best equivalent to a 5mm thick steel
sheet.
In terms of deflection (stiffness), the aluminum plate will yield at
around 29% greater yield strength than the "equivalent" steel plate
and will fail at around 12.5% of the ultimate strength of the
"equivalent" steel plate when flexed. In other words, inch for inch,
aluminium but much easier to break than steel but much harder to bend.
It is not necessariily a liability. I'd rather have a steering guard
that will break on impact than one so stlff that it will cause the
chassis to bend.
--
Rgds,
Roman (London, UK)
'92 HDJ80
 
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