Re: Disco 1" lift springs

Paul - xxx wrote:

> Niamh Holding posted:
> > In article <[email protected]>,
> > [email protected] (Austin Shackles) wrote:
> >
> >> it might be that suitable spring selection from the various
> standard >> options
> >> would get me the results I want. In an ideal world I want
> standard rate >> or
> >> maybe up to 10% stiffer, with about 1" more ride height.
> >
> > I have all the length & rate data here for standard springs, I'll
> > dig out the papers and see if they tell me the stock disco
> > installation
>
> That'd be an interesting set of documents to look at .. they <cheeky
> mode on> wouldn't be available anywhere on the 'net would they ???

This might be useful:

http://members.shaw.ca/jbarge/springinfo.html#OEM

http://lr90.shacknet.nu/lr90/calculator.aspx

--
Simes

On or around Sat, 19 Jun 2004 21:06:03 +0100, "Simon Atkinson"
<[email protected]> enlightened us thusly:

>Paul - xxx wrote:
>
>> Niamh Holding posted:
>> > In article <[email protected]>,
>> > [email protected] (Austin Shackles) wrote:
>> >
>> >> it might be that suitable spring selection from the various
>> standard >> options
>> >> would get me the results I want. In an ideal world I want
>> standard rate >> or
>> >> maybe up to 10% stiffer, with about 1" more ride height.
>> >
>> > I have all the length & rate data here for standard springs, I'll
>> > dig out the papers and see if they tell me the stock disco
>> > installation
>>
>> That'd be an interesting set of documents to look at .. they <cheeky
>> mode on> wouldn't be available anywhere on the 'net would they ???
>
>This might be useful:
>
>http://members.shaw.ca/jbarge/springinfo.html#OEM

seen that one, and while it's good, it's not so detailed on the newer
springs. Mind, no-one seems to have all the info - the dual-rate springs,
for example, I assume don't *just* have 2 rates and there must be a length
at which they change from one rate to the other. Not much point in testing
well-used ones, either - they'd need to be new or nearly-new.

Chris Perfect has a test-rig for leaf springs, I dare say it could be
adapted to test coils too. the problem is getting someone to supply the
springs to be tested - it should be possible to test rate and length
(height) at a given load, which is the test we do on the leaf springs -

any spring suppliers fancy giving this a go sometime?
--
Austin Shackles. www.ddol-las.fsnet.co.uk my opinions are just that
"Something there is that doesn't love a wall."
Robert Frost (1874-1963)

Austin Shackles posted:
> On or around Sat, 19 Jun 2004 21:06:03 +0100, "Simon Atkinson"
> <[email protected]> enlightened us thusly:

>> http://members.shaw.ca/jbarge/springinfo.html#OEM
>
> seen that one, and while it's good, it's not so detailed on the newer
> springs. Mind, no-one seems to have all the info - the dual-rate springs,
> for example, I assume don't *just* have 2 rates and there must be a length
> at which they change from one rate to the other. Not much point in
> testing well-used ones, either - they'd need to be new or nearly-new.

In theory dual-rate springs have an infinite, and progressive, rating
between the two rates, there isn't a jump from suddenly being one rate to
another ...



--
Paul ...

(8(|) ... Homer Rocks

On or around Mon, 21 Jun 2004 07:10:57 +0100, "Paul - xxx"
<[email protected]> enlightened us thusly:

>Austin Shackles posted:
>> On or around Sat, 19 Jun 2004 21:06:03 +0100, "Simon Atkinson"
>> <[email protected]> enlightened us thusly:
>
>>> http://members.shaw.ca/jbarge/springinfo.html#OEM
>>
>> seen that one, and while it's good, it's not so detailed on the newer
>> springs. Mind, no-one seems to have all the info - the dual-rate springs,
>> for example, I assume don't *just* have 2 rates and there must be a length
>> at which they change from one rate to the other. Not much point in
>> testing well-used ones, either - they'd need to be new or nearly-new.
>
>In theory dual-rate springs have an infinite, and progressive, rating
>between the two rates, there isn't a jump from suddenly being one rate to
>another ...

as i fort. Not entirely true, though, as in practice the low-rate bit gets
coilbound and stops working at higher loads. but it's progressive, yeah.

--
Austin Shackles. www.ddol-las.fsnet.co.uk my opinions are just that
Satisfying: Satisfy your inner child by eating ten tubes of Smarties
from the Little Book of Complete B***ocks by Alistair Beaton.

Austin Shackles typed:
> On or around Mon, 21 Jun 2004 07:10:57 +0100, "Paul - xxx"
> <[email protected]> enlightened us thusly:
>
>> Austin Shackles posted:
>>> On or around Sat, 19 Jun 2004 21:06:03 +0100, "Simon Atkinson"
>>> <[email protected]> enlightened us thusly:
>>
>>>> http://members.shaw.ca/jbarge/springinfo.html#OEM
>>>
>>> seen that one, and while it's good, it's not so detailed on the newer
>>> springs. Mind, no-one seems to have all the info - the dual-rate
>>> springs, for example, I assume don't *just* have 2 rates and there must
>>> be a length at which they change from one rate to the other. Not much
>>> point in testing well-used ones, either - they'd need to be new or
>>> nearly-new.
>>
>> In theory dual-rate springs have an infinite, and progressive, rating
>> between the two rates, there isn't a jump from suddenly being one rate to
>> another ...
>
> as i fort. Not entirely true, though, as in practice the low-rate bit
> gets coilbound and stops working at higher loads. but it's progressive,
> yeah.

Ho yuss .. like I said 'in theory' ..

IMHO dual-rate springs do work, providing they are used for the right
reasons. Too many people see them as an add-on that will cure something
else that's wrong with a vehicle, when what they can do is mask a problem,
like sticking bushes or bent damper rods ... from experience ..

--
Paul ...

(8(|) ... Homer Rocks

On or around Mon, 21 Jun 2004 01:17:50 -0700, "Paul - xxx"
<[email protected]> enlightened us thusly:
>>
>Ho yuss .. like I said 'in theory' ..
>
>IMHO dual-rate springs do work, providing they are used for the right
>reasons. Too many people see them as an add-on that will cure something
>else that's wrong with a vehicle, when what they can do is mask a problem,
>like sticking bushes or bent damper rods ... from experience ..

OK, OK...

but in this case, I think the fact that I've replaced the petrol tank with a
heavier gas tank, plus the fact that it's till got 7-8 gallons of petrol,
means that it's probably got at least 25 Kg more weight behind the back
axle. It also looks as though it's been used for towing, and I've just
added about 10Kg of adjustable hitch. It looks to me that it's sitting low
at the back.

I'm not really bothered about dual rate, more that the only standard springs
that'll fit and give a bit more capacity/height happen to be dual-rate ones,
viz. heavy duty 90 rears. All the others appear to be softer than the
standard disco rears, 110 rears of course won't fit.





--
Austin Shackles. www.ddol-las.fsnet.co.uk my opinions are just that
"The great masses of the people ... will more easily fall victims to
a great lie than to a small one" Adolf Hitler (1889 - 1945)
from Mein Kampf, Ch 10