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Old 02-22-2016, 03:59 PM   #71
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Originally Posted by Iowa Dave View Post
By George he's got it, Eric's really got it. Yes he's got it.
You sure about that?
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Old 02-22-2016, 04:03 PM   #72
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With apologies to Professor Higgins.
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Old 02-22-2016, 04:24 PM   #73
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Well, after killing a couple of drill bits, (that WDH is HARD, my Dremel and round file came in handy) and following all the instructions for the Pro Series with the trailer hooked up and the WDH adjusted I took it out for a test run over to our local COOP for some weighing. Felt excellent, and no sway with trying some very fast lane change type maneuvers.
Looks good!

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I'm able to get the front of the HIghlander back to almost precisely its loaded but unhitched height as the instructions specify but the front the trailer is up above level. From trying to read more about this on the web, I've concluded that for a single axle trailer too high is better than too low. The rationale is that in any heavy braking need, that the weight is shifted to the front of the trailer and putting more downforce on it - thus pushing down more on the ball.
I would say the opposite. Raising the tongue shifts the mass of the trailer rearward and upward, making it less stable. As a result, slightly nose-down is always preferred for single-axle trailers. As a minor side-effect, nose-down would help clearance between the Highlander's hatch and the Escape's tongue jack, in case that is an issue.

Yes, during braking there will be more load on the tongue, but at the same time the tow vehicle is shifting load (for the same reason) from rear axle to front axle, so there is no problem with the trailer tongue pushing the ball down too much under braking.
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Old 02-22-2016, 04:38 PM   #74
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Originally Posted by Brian B-P View Post
Looks good!

I would say the opposite. Raising the tongue shifts the mass of the trailer rearward and upward, making it less stable. As a result, slightly nose-down is always preferred for single-axle trailers. As a minor side-effect, nose-down would help clearance between the Highlander's hatch and the Escape's tongue jack, in case that is an issue.

Yes, during braking there will be more load on the tongue, but at the same time the tow vehicle is shifting load (for the same reason) from rear axle to front axle, so there is no problem with the trailer tongue pushing the ball down too much under braking.
Huum - good food for thought. But I measured the tongue weight with the tongue at very close to its height when all hooked up and the WDH installed. It was right at about 11 - 12%. If the nose up angle were shifting the load enough to matter wouldn't that show in tongue weight? 17's are pretty tongue heavy and a tongue down angle could potentially get it over 15%. I've had more instances with almost too much tongue weight rather than too little with it.

I'm having trouble visualizing how tongue down could help clearance between the jack and hatch - seem like tongue down would angle to top of the jack closer to the hatch? But there is plenty there anyway on ours.
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Old 02-22-2016, 05:12 PM   #75
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Originally Posted by thoer View Post
Huum - good food for thought. But I measured the tongue weight with the tongue at very close to its height when all hooked up and the WDH installed. It was right at about 11 - 12%. If the nose up angle were shifting the load enough to matter wouldn't that show in tongue weight? 17's are pretty tongue heavy and a tongue down angle could potentially get it over 15%. I've had more instances with almost too much tongue weight rather than too little with it.
That makes sense. 11 - 12% while tilted slightly up does mean that it will be greater when level or lower; the effect is already showing, but you can't tell without tongue weights at each height. Fortunately the rate of change with tilt is not as great with a single-axle as it is with a tandem-axle.

While the Escape 17 tends to be high in tongue weight (although not as bad as the similarly sized and proportioned Casita 17, due in part to the rear battery placement), high hitch weight is often an issue. It would be interesting to measure the hitch weight at both heights, to see how much difference it makes.

Anyway, the trailer is apparently not unreasonably nose-up now.

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Originally Posted by thoer View Post
I'm having trouble visualizing how tongue down could help clearance between the jack and hatch - seem like tongue down would angle to top of the jack closer to the hatch? But there is plenty there anyway on ours.
Maybe I wasn't so clear...
The improvement wouldn't be from the slight change in tilt angle of the trailer (which I agree would make interference worse), but simply from attaching the trailer's tongue a couple inches lower on the Highlander.

Doesn't matter in this case, anyway. My hatch just barely clears my tongue jack, and some people find that it hits... depending on tow vehicle, jack, and hitch setup. It's just something to check for.
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Old 02-22-2016, 05:26 PM   #76
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I'll just put those cases of beer Dave talked about back there and it will probably be level!
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