More ancient content. This was Roadiemobile 1.0. SuspensionMAXX thin spacers - Goodyear Silent Armor AT tires.
Had a pleasant day in the desert (Borrego) today. Some easy - some hard wheeling. More pics and videos later when I get them edited.
For now, enjoy these. Yes, the trail (Coyote Canyon) goes through the 10" deep water for 100 ft.
Goster asked me how it ran. I answered:
1) Water: With the new tires and lift, it definitely handles water better, especially getting up out of a wet wash. Looking at the service manual, the front and rear differentials *do* have vent tubes to raise the vent opening to a safe level. Otherwise I would have had to do more work to make them safe. But something tells me Mrs. Roadie would not support a snorkel mod:
2) Rocks: Rocks up to 10" are no problem, and 16" rocks are OK if I put a tire up on them and steer around them before they hit the rocker panel. Wish I had rock rails instead of plastic rocker panels so I could use rocks as a pivot fulcrum. If I have to take a rock underneath and scrape something, it's nice to have a frame to slide them on, because the skid plates aren't structural enough. The skid plates will deflect kicked up small rocks, but aren't really useful to slide on. Our extremely tight turning radius helps a LOT when picking the right line to take on a rock trail. Experience going with my jeeper friends was very useful. Long wheelbase vehicles (EXT/XUV) aren't as suitable because of the danger of high centering.
Favorite place to show off articulation and side-slope crawling is Sandstone Canyon:
3) Traction: The G80 automatic locker is absolutely essential. I'm even considering upgrading to the electronic-actuated Eaton locker because it's annoying to let a tire spin to activate the locker. One trail situation sometimes shows up the problem of having an open front differential and a non-locking transfer case, and it's when climbing a trail that's composed of rocks embedded in sand, and both rear wheels end up embedded in sand. They would lock if only one of them was on a rock, but if both start spinning in the sand, the front wheels don't generally get enough torque transferred to them to pull out the heavy vehicle. Taking a slightly different line to keep at least one rear tire touching rock is enough to solve this issue, but the jeeps with total lockability don't need to learn this trick. Until I figured it out, I got stopped a few times and gave up on trails I can get through now. Getting out and stacking rocks on top of the sand is another alternative, totally allowed by the unwritten off-road rules.
4) Tires: I'm really, really happy with the traction I'm getting with the Wrangler Silent Armors. Never even had to air them down for good sand traction, and I haven't ever felt nervous about any kind of deep sand, but that's partially a consequence of 4WD and the locker. With a built-in compressor (I put in for the Airlift 1000 rear air bags), I'm all set to air down if necessary, but then I don't do a lot of sand hill climbing like my buddies. The Envoy is simply too darned heavy!
5) What I'm most nervous about: Approach angle. The bumper kills the approach angle. The departure angle is not so bad when I inflate the Airlift bags to their max, but the front bumper will have to go in the long run after the warranty is over. See what 4 wheeler magazine did to a Lexus for a project car and you'll see where I'll be going in the next 2-3 years.
6) What I'm next most nervous about: Body damage. Can't do much about the shape of the body, but it does stick out in ways that could catch tall rocks. It's also too wide to go through the Pinyon Squeeze. So that's one trail I'll just have to enjoy walking through instead of driving.
- - - Updated - - -
Tough trail today - Espinosa trail near Corral Canyon OHV area. Mostly for hikers and lifted jeeps. Too narrow for Hummers. Did manage to get some short video clips this time. Nice to have a volunteer photographer riding shotgun!
Here's one link, climbing to an asphalt helipad used for fire-fighting:
http://www.roadie.org/espinosa1.mov (warning 5MB - not for dialup)
Up a piece of slickrock:
http://www.roadie.org/espinosa2.mov
Down the slickrock:
http://www.roadie.org/espinosa3.mov
Trail stuff:
Tightest rock squeeze - not even tight enough to require putting in the mirrors. :raspberry
Steepest, rockiest part - just at the limit for my lift and tires. Stock vehicles - no hope.
Very careful choice of drive lines necessary.
Over the worst humps
Off camber
Almost through.
Clear sailing ahead? Not! Another two miles of this sort of crud.:hissy:
In one of the videos was probably the hardest hit I took all day, and it was a tow loop next to the front skid shield. I think I scraped the frame lightly on rocks 3-4 times, the gas tank skid plate took one minor hit, the front receiver skid shield twice, and the front receiver tow loops took the most damage. Not bad for a trail with 4 miles of 10-20" rocks, 2-foot deep ruts, about 20 dry stream bed crossings (down, across, and out the other side).
The Curt 31055 front receiver has these tow loops welded to it, and at this point they're the item that harms my approach angle the most, so I consider them sacrificial (meaning I don't care if I break them off.) It's actually useful to hit them on flat rock because they can't do anything but bend upwards, and that will save me a few sledge hammer hits later on before I finally get rid of them. After I cut them off, I'll add back in the proper kind of tow hooks in a place that doesn't hang down.
I already have two of these hooks, which aren't even available on Envoys like they are on TBs. When I originally installed them, I foolishly put them on the skid shield underneath the radiator, which was an insanely wimpy place, and when one of them hit a rock in Borrego, the radiator pushed the fan shroud back into the fan and jammed it. Until I got my jeep buddy to give it a strap tug, I had to drive into the wind to make sure it didn't overheat. Yet another embarassing episode in my trail driving training.
All I had to do was pull it forward 1/2", but there were absolutely no trees around for miles, and it was easier to use him as a tug point than get out my sledge hammer. Everybody *does* carry a sledge hammer for those minor on-trail repairs, don't they?
Mostly, what happens in the desert *stays* in the desert, but you guys are my buddies so I can tell you the embarassing stuff.
The front receiver skid shield doesn't take a lot of hits because I almost never take a high rock (>11") straight down the centerline, because it will hit the differential and rear sway bar later. So I tend to drive over those size rocks or ledges in line with the frame rails, which can take the stress, and the frame rails are just outboard from the tow loops. So the tow loops are an early warning noisemaker. If they take a really hard hit if I misjudged a rock, I'm always going slowly enough to stop before harming the expensive undercarriage parts. (meaning the ones I need to get home.)
Here's the virgin Curt 31055 being installed. Note the loops look nicey-nice:
Here's what they look like today. Note very little damage on the skid shield in the center:
Anyway, I also took some videos from the roof of the Envoy. I got this suction cup mount from RAM-mounts, where I got my tablet PC mounting arm, and stuck it to the roof.
Thought you might get seasick viewing a video from the vehicle, but maybe not. Enjoy:
http://www.roadie.org/espinosa4.mov
http://www.roadie.org/espinosa5.mov
Maybe there's a market for a DVD of Envoy rock-crawling? I know a lot of folks would love to see me get stuck in mud. :hissy: