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Old May 18th 07, 04:14 AM posted to rec.aviation.soaring
Paul Hanson
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Posts: 89
Default Tow cars and trailers

At 00:48 18 May 2007, Ed Winchester wrote:
Bill Daniels wrote:
'anonymous' wrote in message
...
Bill Daniels schrieb:

Many of us drive larger vehicles than we might otherwise
choose simply to
pull our trailers 1% of the time. 99% of the time,
we could be driving,
say, a Volkswagen Passat TDI diesel getting 45mpg.
The Volkswagen Passat TDI is a fairly common tow vehicle
in Europe. No
need for a SUV. But then, this has been discussed
here many times.


Yes, I know that. However, it's not common in the
US bacause of the higher,
hotter, longer trip conditions here. Almost any trip
in the western US will
include at least one long, steep grade starting with
temperatures above 40C
that may climb to 3600 meters ASL. I know of one
VW that arrived as
essentially junk after one trip. The next time I
saw that pilot, he was
driving a much bigger tow vehicle.

If you prefer the manufacturer's position, here's
a comment from USA Today's
James R. Healey::
'Back to the Passat towing spec question: VW just
called to say towing's not
recommended with the Passat and that's why no towing
spec is provided. Would
towing void the warranty? Uh, um, well, probably not,
VW says, as long as
you tow light loads with a proper hitch installed
and used per the
aftermarket supplier's recommendations. Unless, of
course, some damage is
the obvious result of towing. Sounds to me as if anybody
who wants to tow
should choose a different car. Too much 'maybe' factor
with Passat. '

The VW Passat TDI diesel is a great car. I just wouldn't
abuse it by towing
a glider trailer.

Bill Daniels


Bill,

I have to agree with Dan. With the TDI (turbocharged
diesel injection)
the elevation would have almost no effect. Yes, pulling
up the hills
would work the engine a bit, but gearing down and watching
the temps
should cover that.

Ed

I think we must be careful not to use too light of
a vehicle to tow our glider trailers with. Although
the 2:1 ratio some trailer rental companies use ('U-Haul
used to require 2:1 ratio between the towing vehicle
and the trailer. Stated differently, the towing vehicle
must weigh twice as much as the trailer and its contents.
To increase rentals, U-Haul lowered that ratio from
2:1 to 1:1. This change decreased stability and increased
accidents'.--from http://www.beasleyallen.com) may
be suitable for short coupled trailers, our glider
trailers although admittedly light in weight, have
much greater moments due to the longer arm, so for
me at least, that unfortunately rules out small, lightweight
super efficient vehicles, due to safety concerns. I
did find this in another thread though, talking about
glider towing with a Toyota Highlander Hybrid:
'I'll add my two cents to this thread. I towed my glider
trailer last weekend with a HH 4wd. Glider trailers
are tricky to tow because of their length (28') and
the fact that they have a lot of sail area. Weight
is about 1800 lbs. The rig was rock solid in mountainous
terrain with a 25 mph crosswind. Was at least as good
as my previous vehicle, a Grand Cherokee. I am quite
pleased with the performance. Overall, I am getting
about 26-27 MPG'.
found in:
http://townhall-talk.edmunds.com/direct/view/.f0daea6

I like the idea of good gas mileage, since I tow mine
enough for that to be a major budget concern, for me.
(Ca to Memphis last Feb, Ca to Oshkosh later, plus
several milk runs...ouch) I currently tow with a Chevy
Astro Van, and get around 18-19mpg, doing normal interstate
speeds (70-80mph), so 26-27mpg does not sound too bad,
although I would need a motel when I got where I was
going because the Highlander Hybrid does not sound
big enough for me to camp in with my dog while on site.
It does sound like a good possible solution for some
of you though.

I do really like the idea of some sort of drive-assist
system in the trailer though, an idea I've considered
before, although my gas mileage without the trailer
is near the same in the Astro. Somebody needs to develop
a hybrid van, with good towing capacity, coupled to
a trailer that assists and then we would be on to something.
Although, the excessive cost of this combo would probably
outweigh the extra money that would be saved on gas,
it seems like a step in the right direction none the
less.

Paul Hanson
"Do the usual, unusually well"--Len Niemi