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Archive for the ‘Mercedes GL320’ Category

Tow vehicle on the track

Tuesday, February 2nd, 2010

Towing a big trailer intimidates a lot of people when they try it for the first time.  It should, because you can very quickly get into trouble when towing. It requires drivers to learn a new set of skills, and apply good driving practices at all times.  I think it is particularly intimidating when you’ve just signed a loan agreement obligating you to 10 years of monthly payments, and you realize that a considerable portion of your net worth is now rolling along with you, presenting a large and shiny target for every nutcase driver on the road.  A new truck/Airstream combination can easily come in at $80-100k.  Atop that, there’s the knowledge that you, your family, and your dog are all going to be involved in any accident you get into.

rolloversign.jpgSo suddenly those “defensive driving” tips you have taken not-so-seriously rise to an unprecedented level of importance.  Suddenly you’re the one cursing that guy who cut in between you and the car in front of you, using up all the distance and reducing your time to react.  Now you’re paying attention to the rollover warning sign on the Interstate exit ramp, and the 25-MPH speed limit on the big cloverleaf intersection.  You realize, “Hey, they mean me” when you are towing two or three tons of expensive housing behind you.

In late 2000, Eleanor had a rollover accident with baby Emma in the car, and ever since I’ve been interested in getting both of us some advanced driver training.  We know how to drive, but do we really have the instincts to react properly when it all suddenly goes very wrong at 60 MPH?  I’d like us both to have some more confidence about our abilities in adverse situations, and the trained reactions to avoid a crash.

Now, after years of Airstream ownership and years of full-time travel, I am pretty sure I know how to handle my Airstream. The number one rule is simple: SLOW DOWN.  There are many other practical rules as well, involving getting in and out of tight spots, evaluating situations before getting trapped in them, backing up, passing, rough roads, etc.  I’ve got all those pretty well figured out by now, mostly as a result of painful experience.

The thing that concerns me about towing is not the trailer, but the tow vehicle.  Most tow vehicles have a high center of gravity and are more prone to rollover than the average car.  Adding an Airstream actually tends to help with this, by putting weight down low and stabilizing the vehicle — if properly hitched.  But adding people, fuel, and cargo usually raises the center of gravity in an SUV, and most drivers aren’t aware of this until they notice adverse handling.

Moreover, pickup trucks and SUVs are generally lousy at high-speed maneuvers.  They aren’t designed for that.  You’ve got a narrow maneuverability envelope to work in at highway speeds.  Exceed the envelope, and the tow vehicle will go out of control, often without much advance warning. That’s further reason to understand the limits of your vehicle, and to train yourself how to react properly.

Last weekend a local car club was holding a “Defensive Driving” course up in Phoenix, and we signed up.  The instructors recommended showing up in the vehicle you drive the most, so we brought our Airstream’s tow vehicle, the Mercedes GL320.  At 6,000+  pounds, it was by far the largest and heaviest car on the track. Most people were in small sedans or sportscars.

dsc_4783.jpgThe course included about half an hour of “chalk talk” followed by individual instruction on a course set out in the parking lot of a former Wal-Mart.  We took turns driving through the course with an instructor in the right seat.  The tasks included an emergency lane-change maneuver, a slalom, an emergency brake followed by immediate lane change, and a panic stop strong enough to engage the anti-lock brakes.

dsc_4579.jpgI thought all of this would be routine, but I was surprised.  Each task had an unexpected element to it.  In the emergency lane change, I discovered how easy it is to go the wrong way when you’ve got to make a snap decision.  In the slalom, I was frankly amazed at the handling of the GL320 — it went through much faster than I had expected.

The panic stop was a particular challenge for me.  I thought I was pressing pretty hard on the brakes, but I had to try three times before getting the ABS to kick in.  Once I did, the GL320 came a stop really fast.  Turns out that I’ve been holding back on the brakes, probably as a result of learning to drive up in Vermont without ABS, in the snow, where you’ve got to keep a light foot on the brake to avoid skidding.  Old habits die hard, but that one needs to go.  The ABS computer can do a better job of modulating the brake pressure than I can.

After lunch, the course was re-set as an autocross.   Racing your “daily driver” through the course is the icing on the cake at these events.  We walked the course twice, then Eleanor and I each took a couple of tries at it.  On our second try, we were timed.  You can see me driving the autocross course at our Airstream Life photo/video community.  My time was 49 seconds, Eleanor’s was 51.  Not bad actually, considering the vehicle we were in.  (Our past tow vehicle, a much larger and taller Nissan Armada, probably would have skidded excessively or tipped over if I’d driven it that hard.)  The best time of the day was set by a past national autocross winner, at 38 seconds (in a Mercedes E300), and I think the highest time was 55 seconds.

Sure enough, leaving the event I had a sense of much greater confidence in the vehicle, knowing much more accurately how far I could push it in a turning or braking maneuver.  We’re far from professional drivers at this point, but the day was well spent and I hope we’ll advance our skills later in another similar event.

I-10 from Tucson AZ to Midland TX

Saturday, November 28th, 2009

I woke up at 4 a.m.  Without looking at a clock I knew it was far too early to be getting up for the big drive today.  The Great Horned Owl was still shrieking in the back yard, warning off his potential rivals in between soft hoots.  His warning call is like the screech of a frightened small child, and it always wakes us up.  But he never does it in the morning, so I knew I had to get back to sleep if I was to be ready for ten hours of driving.  I rolled over and tried not to think about what lay ahead.

The strange thing is that we go on roadtrips all the time, and I don’t have this sort of nervous anticipation normally.  Something felt different about this one, but why should I be surprised?  Traveling without E&E, hotels instead of Airstream, and a rigid 600-mile per day schedule.  Everything was different.

Well, I did get a few hours more sleep, and was finally rolling away at 7:50 a.m.  The trip started off with a bad omen: the GPS would not power on.  It worked fine just two days ago.  Why should it suddenly die?  I took it along anyway, thinking that by wiggling some cords or perhaps applying some other form of persuasion I would get it working again along the way. The day’s route was as simple as could be.  Get on I-10, and stay there for 600 miles.  I didn’t think I’d need it for a while.

I did stop at The Thing in Arizona, but the sky was gloomy and my photographer alter ego said to try again on the way back, when I have the Airstream in tow.  I took a few half-hearted snapshots of the exterior and continued on.

Along the road I counted five Airstreams, all headed west.  One of them was a Caravel, just like the one I’m going to pick up, which gave me a pang of wistfulness.  I wished I had it in tow already, and I was heading for Big Bend National Park instead of Louisville.

But for today there was the compensation of just driving the heck out of the car without anything in tow. Mercedes enthusiasts says it is “autobahn ready,” which means theoretically I should be able to go 150 MPH with no trouble.  In reality the car is electronically limited to 130 MPH, and even in Texas that’s a big ticket.  The speed limit was 75 through Arizona and New Mexico, and once I was about 30 miles past El Paso things opened up to a neat 80 MPH, which meant I could at least flirt with what the car could do in those big empty spaces between El Paso and Van Horn.

midland-motel.jpgBy the numbers:  622 miles total driving, average speed 73, fuel economy a startling 26.7 miles per gallon!  I hadn’t expected such good fuel economy at 80 MPH, but speed doesn’t seem to affect the fuel economy on this car very much.  After 622 miles the computer said I could go another 59 miles, but when the orange “low fuel” indicator went on I decided to call it quits.  I was in Midland, where I had planned to stop anyway.  It was just a matter of finding the hotel I had reserved.  And then I remembered: no GPS.

The dead Garmin is still a week inside it’s one-year warranty period, so tomorrow I’ll call for a return authorization, and when it comes back we’ll have a GPS for each car.  In the meantime, I need a functioning one to navigate my way around half a dozen cities on this trip.  Fortunately, all along America’s highways one can find handy superstores, so I stopped at the first one I saw and bought a replacement GPS.

And with that, I found my hotel, grabbed some takeout dinner, unloaded my valuables into the room, and settled in to update you with the millionth re-run of “Caddyshack” playing on the TV in the background.  I think the presence of a cheap room, cheap takeout, and a brainless old movie at the end of the day completes the requirements for this to be an official roadtrip. It has been a long day, and tomorrow another long day lies ahead.

The ghost of Thanksgiving future

Friday, November 27th, 2009

For us, Thanksgiving was last weekend.  We’re splitting off into different directions tomorrow, and Eleanor wisely did not want to make a her normal “ginormous” meal and then have nobody around to eat the leftovers, so we did the big feast last Sunday.  Three of us and two guests cut into the delicious goodies Eleanor made, and we barely made a dent.

We’ve been eating leftovers since.  Twice a day, every day, it’s turkey, gravy, roasted vegetables, stuffing, mashed potatoes, cranberry relish, pumpkin soup — probably the same sort of thing that you are salivating over today.  Well, let me tell you, enjoy it while it’s still a novel experience.  Because I’m your future, and I can tell you that in three days, you’ll be begging to be released from leftover jail.

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(Image credit: Brad Cornelius)

Emma mutinied this morning.  I was prepared to surrender on Tuesday but after seeing how much was remaining of that 23-lb bird I felt it was my husband-ly duty to persevere, even though my mouth was craving something — anything — different. We managed to wipe out the soup, 90% of the vegetables, the cranberries, 80% of the stuffing, and the gravy, but that darned fowl is still sitting in the refrigerator, taunting us from under a tent of aluminum foil.  When Emma cracked, I lost my willpower as well and we declared the season of Thanksgiving leftovers officially over.

Tonight I want Chinese food with lots of unidentifiable MSG-laden sauce.  Or maybe spaghetti with spicy meatballs and lots of chopped garlic.  Anything that has pungent odors for the palate and alternate textures for the tongue will do.  Just please, no more “white meat or dark meat?” this week.

So without traditional Thanksgiving things to do, we are spending the day packing.  E&E are flying up to Vermont for a visit to the seasonal gloom and wet (just kidding, they’re really going to see family), and that is an adventure that requires much packing, analysis, unpacking and repacking (repeat ad infinitum).  I am leaving for a major roadtrip to Louisville KY and Grand Rapids MI, among other spots.

The roadtrip will be a screamer compared to the way we usually travel.  Being solo, I can roll out of bed, jump in the car, and knock off 800 miles before dinner.  Bathroom stops will be brief & infrequent, lunches can be eaten with one hand at 75 MPH (or during a very short rest area stop), and the route will be 100% high-speed Interstate highway.  My route is easy to remember — I-10, I-20, I-30, and I-40 — but being Interstates, the drive itself should be pretty forgettable.  Thanks to the wide-open spaces of the west, in my entire first day I will pass through only one major metro that could slow me down (El Paso).  The rest of the time the speed limit is 75-80 MPH and there’s not a whole lot to bother stopping for.

Actually, I might detour very slightly in Arizona to drop in on “The Thing.”   I know what The Thing is (but I’m not telling!)  My reason for stopping is to get a few photos for an upcoming article in Airstream Life (Spring 2010) about “America’s Favorite Tourist Traps.”  But other than that, I don’t plan to stop for much until at least Odessa, TX.  That’s 600+ miles from Tucson.   I don’t even expect to stop for fuel, ’cause like the other Mercedes Bluetec diesels, the GL320 can get up to 700 miles out of a tank when there’s no Airstream dragging it down.  That’s a feature I haven’t had a chance to test out yet.  So with a few distractions like these I’ll try to make the trip more interesting for myself.

In case you are wondering, the thing pictured above isn’t The Thing.  But it’s a Thing anyway.  I don’t know what the heck it is, really.  It seems to be the result of Brad working out a nightmare he had.  He’s a brilliant illustrator and that means sometimes odd things come out of his head.  He’s the guy responsible for the Alumapalooza poster design, as well as all the Tin Hut illustrations that have appeared in Airstream Life, and if you come to Alumapalooza next summer you can meet him.

One last thing to do tonight: cut up the remaining turkey and freeze it.  Eleanor says there’s enough left that we can have it for Christmas, and the carcass will become soup.  It seems the ghost of this turkey will be haunting us for some time to come.

Exploring the Green River, Canyonlands NP

Saturday, October 10th, 2009

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Staying a third night at Horsethief campground turned out to be a good move.  Eleanor’s  back was not ready for backpacking, but just a short distance from the campground was a 12.9 mile dirt road (Mineral Road) that led through BLM land to Green River just west of where it enters Canyonlands National Park.  This road is favored by mountain bike touring groups.  They start at the Rt 313 end (8 miles from the Visitor Center of the park) and cycle to the edge of the canyon, then get a ride back.

The sad thing is that they see the least interesting part of this long dusty road. It rolls up and down across a fairly featureless scrub plain with almost no canyon views until the very end.  But just a few feet further, the road becomes an adventure, zig-zagging down into the river canyon to the banks of the Green River.  In the photo above, you can see us starting the trip down.

This road is much easier and more civilized than the Shafer Trail, and easily twice as wide in most places, but there are still a few tight and “interesting” spots to keep you awake.  It might look smooth and easy from the picture, but that’s deceiving — 4WD is a very good idea and don’t expect to go more than about 8 MPH at any point.  Still, it’s a drive almost anyone who is not terrified of heights can make.

dsc_2758.jpgAt the bottom you have a choice: left to follow the river, eventually to enter Canyonlands and the White Rim 4WD road; or right one mile to the Mineral Bottom boat launch.  We tried left and explored along the river for a while, then turned around after a few miles and went to the boat launch for a picnic. Rafters launch here for multi-day trips.  A few miles from this point, the Green and Colorado Rivers meet in a confluence and then begins some of North America’s greatest whitewater rafting, so I’m told.  The group we saw departing was off for a week, heading all the way to Lake Powell.

dsc_2796.jpgOnce back, we decided to check out the Gemini Bridges, also near the Horsethief campground.  No 4WD needed for this trip, since it’s just a typical dirt road most of the way.  The Gemini Bridges are a pair of natural sand stone bridges that you can walk over (or beneath if you approach by a different route) — well worth the trip off pavement to explore. The hike from parking lot to the bridges is only a quarter-mile or so.

We left the Canyonlands early this morning, spurred on by the need to get to Cortez CO (150 miles away) before the post office closed.  Before departing Cortez I felt the need to pick up some diesel and ventured into a Shell station that I shouldn’t have.  Normally I check carefully before turning into a station but in this case the sun was right in my eyes and I couldn’t determine the situation clearly until we were committed.   Of course, it was one of those impossible arrangements for trailers, and we got wedged in between some pumps and the building.

What to do?  Well, first, may as well fill up.  So we did that, and evaluated the situation while the pump was running.  There was no chance of proceeding forward, and no room to back up.  We’ve been in tight spots before, and one thing I’ve learned is that you never panic, and always remember that other cars can be moved.   Eleanor got out and started negotiating with a guy parked behind us so that we could carefully back up into his space.  Then another parked car moved and we were able to start see-sawing back and forth to straighten the trailer a little.

To escape, we needed the cars in the middle pump aisle to clear out entirely.  This was tricky because the gas station was very busy, and clueless people in little cars kept zipping in and out.  Meanwhile, the owner of a Porsche Cayenne seemed intent on not merely washing his windshield, but detailing his car right there at the pump.  Once he finally cleared the aisle, Eleanor stood blocking the entry.  I maneuvered the trailer a little more — veeeeery carefully — to both get a better starting position and to intimidate anyone foolish enough to try to slip past me.  A little more negotiation ensued, and soon the next car left. Vroom!  We were outta there.

And of course as we drove through Moab, we passed at least three other stations with wide open spaces for big trailers and diesel fuel for five cents less per gallon…

Offroading Canyonlands National Park, UT

Thursday, October 8th, 2009

We decided to skip Dinosaur National Monument this time around and head straight to Canyonlands.  Dino is operating under some restrictions due to the visitor center being closed, and the fact that it is off-season.  We’ll visit that park on another trip.  So our route took us down from Blue Mesa reservoir along Rt 50/285 to Montrose, and then northwest to Grand Junction CO, where we picked up I-70 to Utah.

As I’ve mentioned before, the drive along Rt 50 across Colorado is a fantastic and worthy roadtrip.  I-70 from Denver to Grand Junction is pretty good (for an Interstate highway) as well, but given the choice  I’d pick Rt 50 except in winter.  I can’t say the same for I-70 west of Grand Junction, because as soon as you cross into Utah it becomes a pretty featureless and dull road.  The compensation is that you’re out of the mountains and on the straightaways, and so you can go fast.

I upped the rig to 65 MPH just so I wouldn’t get blown away by cars and trucks going the legal limit of 75 MPH.   The increase in speed dings our fuel economy but we still got an overall 13.5 MPG for the segment, which isn’t bad for towing.  We could have gone the speed limit with no problem, but as a general rule I don’t tow that fast.  The trailer’s tires are rated for only 65 MPH and the fuel cost would have been high.  As another GL320/Airstream owner once told me, “The GL will tow at any speed you care to pay for.”

The entrance we used to Canyonlands National Park is  just north of Moab UT.  The park is divided into four districts, each separately accessible: Islands In The Sky (where we are), Needles, The Maze, and Horseshoe Canyon.  The districts have completely different routes leading in, and this makes it virtually impossible to visit all of the districts in less than a week.  The distance from one entrance to another can be several hours.  We chose Islands In The Sky for its accessibility and features — it should be a good orientation to the park overall.  We’ll have to visit the other districts in future trips.

You have to come prepared to visit this place.  Visually, it is like a mashup of Bryce Canyon and Grand Canyon.  The views are stunning.  But there is no lodging, no water, no fuel, and no services (restaurant, repair, or otherwise).  The only campground in this district is called Willow Flat and it has just 12 sites.  It fills every day this time of year.  It has no dump station or water either.   For just about anything, you have to drive 25-30 miles to Moab along a circuitous (paved) road, which means a minimum 45 minute trip one-way.

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We arrived at 3 p.m., far too late to get a campsite in either Willow Flat or the nearby Dead Horse State Park (just outside the park boundary).  We ended up at a Bureau of Land Management campground called Horsethief, about 5 miles from the park.  No water, no dump, no hookups, but nice scenery and well-spaced dirt sites in the boonies ($12 per night).  Amazingly, my cell phone and Internet work just fine both here and at the Canyonlands visitor center, so I’m able to keep up on work and post the blog. That means we’ll stay at least two nights and perhaps three.

Our usual program when arriving at a national park is to drop the trailer and immediately hit the visitor center for orientation.  The rangers are always happy to meet someone who is going to stay a few days (rather than the usual, “We’ve got two hours — where are the good views?”) and they will provide insider tips on where to go.
img_5438.jpgWith only a couple of hours of daylight left (after Emma finished browsing the visitor center for clues for her Junior Ranger program), we decided to drive down into the canyon on a four-wheel drive road called Shafer Trail.  Now, you might be thinking, “Hey, that’s a Mercedes — it doesn’t go off-road,” and I’ll admit I was thinking the same thing.  But Mercedes says that this SUV has parentage from their famed off-road beast the G-wagon.  The GL comes standard with all-wheel drive and an air suspension that can be lifted two inches at the touch of a button. (In the photo at right, you can see the suspension in the “raised” mode.)  I wouldn’t take it on major 4WD roads that require very high clearance because our hitch reinforcement would probably scrape, but the Shafer Trail looked like a good bet — and if it wasn’t, I was prepared to turn around or back up, and go home.

img_5435.jpgWell.  I was pretty busy trying to observe the incredible, occasionally terrifying, view while driving the car around steep hairpin turns over loose rocks … so I did not get any photos of us coming down the road.  However, you can get a good idea of what it is like to drive the Shafer Trail from videos taken by other visitors. The photo at left (click to enlarge) shows part of the descent we did.  The car did just fine, had no clearance problems, and handled as well or better than the Nissan Armada we used to do these sorts of things with.  So I’m amazed that Mercedes managed to engineer a car that can go 150 MPH all day on the Autobahn in comfort, tow a heavy Airstream with good fuel economy, and still be a capable rough-road vehicle too.

The trip down Shafer Trail takes a while.  We put the car in “Downhill Speed Regulation” mode, set the limit to 6 MPH, and it crept down the hairpins while I tried to avoid sharp rocks and major potholes. In about 40 minutes we were down to the Gooseneck hiking trail, parked the car, and hiked 0.3 miles to a stupendous overlook of the mighty Colorado River grinding its way through the sandstone canyon.

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Yes, it was worth the trip.  I would have liked to have gone farther, but the setting sun dictated that we head back up.  I could not imagine driving the Shafer Trail in the dark.

At Gooseneck, the road we were on was part of the White Rim Trail, which is a backcountry 4WD adventure of over 100 miles.  It takes at least two days to traverse completely.  I am sure there are parts of that road I wouldn’t have taken our car on, but the rangers indicated that if we had time we could have gone at least to Musselman Arch.

Today we are going hiking. I have the Winter 2009 magazine 95% wrapped up, and my major task in the next few days is to review layouts and resolve last-minute problems before we go to press.  This is work that can be done at any hour of the day, which means we can play in the sunshine and I can work in the early morning and at night. It makes for a long and peculiar day, but it works for me.  I see the kid is waking up now, and that means it is time for me to wrap up the morning’s work and start preparing for a day in Canyonlands.

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