Scamp 13 Hitch Height - Page 2 - Fiberglass RV


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Old 03-25-2013, 07:56 PM   #15
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Name: Brian
Trailer: Boler (B1700RGH) 1979
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Quote:
Originally Posted by arashaw View Post
A visual inspection looks a hair raised up at the tongue. Is this going to be ok?
Okay for what?
  • The refrigerator cares if it is level, but you might not run that while driving and even if you do that sounds level enough to me. When you camp you unhitch and level it out so how it sits when hitched doesn't matter to camping.
  • Fundamental dynamic stability doesn't care about the angle of the frame, as long as the mass is still sufficiently ahead of the axle line, which means as long as the tongue weight is reasonable.
  • Leaf-spring suspensions become unstable if tilted back too far, but a Scamp doesn't have that kind of suspension.
  • Tandem-axle trailers suffer from various problems due to uneven load distribution between the axles if tilted too much, but again a stock Scamp doesn't have tandem axles.

Level is generally good, and very useful as a reference point, but not necessarily important for towing. Since people often don't check tongue weight, and tongue weight goes down when the trailer is tilted nose-up, the generally recommendation is to avoid tilting it that way. Since this trailer has been tilted nose-down a bit since the original post, it looks like there is no problem at all.
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Old 05-14-2013, 03:07 PM   #16
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is this true?

Rabbit, I don't understand the statement quoted from you in a reply to francesca. It seems that changing the height of the couple would result in the same height difference as the bumper only if the center of rotation (i.e. the wheels) is midway between them, which is not the case, is it? I believe the wheels are well behind the geometric center of the trailer.

the coupler
Quote:
Originally Posted by rabbit View Post
I stand by my answer to the PO's query.

and for Francesca: The coupler will be 2" lower than is the case at present. The rear bumper will be 2" higher. The trailer coupler will be 3/8" below the level plane; the rear bumper 3/8" above. Your first question in the next round should be whether any of the above applies if the trailer and tug are parked on an incline. To cut to the chase, application of the level in that case is meaningless. Seek a level surface OR measure frame hgt. at axle and at rear bumper and coupler or on frame immediately behind coupler. If the ground surface is a flat plane (even if inclined) and the measurements are all the same, the trailer will be "level" when on level ground.

jack
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Old 05-14-2013, 03:54 PM   #17
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You understand the statement well enuf to know that it is deficient to accurately describe a situation in which the center of rotation (axle) is offset from the center of a beam (frame). In the case of the usual trailer with axle aft of longitudinal center of the frame in side elevation, you are correct that for any given vertical movement "X" of the coupler, the extreme end of the frame at bumper moves <X. Is there anything in the statement that you find useful or not? Be gentle; I'm probably old enuf to be your grandad.

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Old 05-14-2013, 04:45 PM   #18
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Thanks gramps! ( Rabbit)

I was just trying to figure out if I was missing something, which I usually am. Francesca was concerned that a small change in ball height would amplify at the bumper but I believe because the wheels are aft of center, the opposite would be true such that it would take a very large change in ball height and a very unleveled trailer to cause an issue with bumper height.

BTW, I am 58 so you must really be getting up there, Congratulaions!
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Old 05-14-2013, 05:37 PM   #19
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Missed that call also as I'm 66. Thought I'd play the AARP card and hope I could weasel out. The shorter the trailer, the less chance of the bumper bottoming out in a leveling attempt but for 13-16' lengths, you'd need a pretty steep pitch to the site and a considerable stack of blocking under the foot of the tongue jack.

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Old 05-14-2013, 06:18 PM   #20
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Haha, lol, we'll have to get together and swig some prune juice some time!

Totally agree that the short trailers take care of a lot of the clearance issues. I think the question was how level is level enough to not affect a propane frig. I have that same question because I have no experience with trailer frigs and we are in line for a new Scamp, which we're very excited about.

So, how sensitive are propane units to being off level and does it matter whether it's front-to-back or side-to-side leveling?
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Old 05-14-2013, 08:09 PM   #21
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Well many of the so called RV experts etc suggest the most important level is from front to back but the fridge on my trailer is 21 years old and am trying to be nice to it not to mention it cools better when completely level. Besides if the trailer isnt level side to side neither is my bed ;-)
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