Re: [DML] struts (Various Owner Opinions)

["content22207" <brobertson@xxxxxxxxxxxx>]

Do you suppose there are as many door strut opinions as there are oil
viscosity/change interval opinions?

For my particular T Bar setting (done by Dave Swingle three years ago
-- 5" or so of hang), I need 2 different sets. I use yours in the warm
weather, then switch to a set of Houston's when temps turn cold. Gives
me consistent door operation year 'round, and allows me to store each
set upright for half a year to protect the seals.

Bill Robertson
#5939

>--- In dmcnews@xxxxxxxxxxxxxxx, <rob@xxxx> wrote:
> Hi Tom,
> 
> You bring up a very good and often overlooked point. The lift piston
is just
> 1/3rd of a three part equation with all parts being roughly equal
but very
> different. The parts are as follows.
> 
> 1. Lift Piston
> 
> 2. Torsion Bar Initial Preload
> 
> 3. Ambient Temperature (assuming you're outdoors)
> 
> It is difficult to do a valid comparison without the numbers one and two
> being identical. For instance Rustproof VIN 1559 said (What's wrong with
> using a real name?) that he set the torsion bar unaided pre-load (No
piston)
> to the "proper "hang" point". Who told him this? I would have told
him 3" to
> 5" is the proper preload for any new piston. 20" should be sufficient to
> catapult the person opening the door over to the passenger side of
the car
> not to mention damaging the roof support structure! Since he's
conducting a
> "test" it would be advisable to contact the supplier for proper
set-up or
> installation information. His doors would fly up with any new lift
piston.
> Each notch on a torsion bar equals about 5% of the total charge.
Much more
> than 2 notches, equal to two incremental adjustments, and you run
the risk
> of bending the roof support structure, which is why most lift
pistons should
> be changed every three to five years. I could talk about lift
pistons and
> DeLorean doors for hours as I consider it my "sub-specialty" but I
have to
> head out of town for the weekend so no more boring lecture for now.
> 
> Thank you,
> 
> Rob Grady







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