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Old 06-25-2012, 07:29 AM   #1
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RV height clearance

OK, this may be a stupid question,...but I don't know the answer, so...How do I measure the total height of my Class A ? We all know how important it is to know your minimum clearance. I don't have all of the original RV literature for my used class A. Measuring with a carpenter's tape measure is complicated by the fact that the roof is well rounded on the edges. I don't have access to a transit for triangulation. Any ideas other than driving around looking for an underpass that just barely fits ?
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Old 06-25-2012, 07:36 AM   #2
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Just a thought, but since you don't have all the original paperwork, you may be able to go to the manufacturer's website and download the specs regarding your specific model. As a rule of thumb, I prefer to allow an additional six inches for safety. I then put all this info (including length, width, weight, etc) into my Magellan GPS and it steers me away from anything that would be too short for me to fit under.
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Old 06-25-2012, 07:51 AM   #3
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Our RV stays in covered storage. Rather than trying to level a stick across the highest point and drop a string to the ground, then measure the string where a 2nd person has marked it, I'll place the highest point under the crossbeam of the cover, then measure the distance between them. Knowing the height of the crossbeam, it's easy to subtract and get the height of the RV.

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Old 06-25-2012, 07:57 AM   #4
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I would just get on a ladder and measure from the ground to the point where the roof is attached to the side, using a tape measure. Then I would take a carpenters level and lay it on the highest protrusion on the roof. Then measure from the bottom of the level to the point where the roof attaches to the sides and add the two measurements together. Add whatever fudge factor makes you comfortable.

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Old 06-27-2012, 02:43 PM   #5
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Which Magellan GPS has the height warning feature?
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Old 06-28-2012, 06:25 PM   #6
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You might want to add the model and year of your RV to the post and someone with the same RV might give you a good answer. I've added a couple of inches to my measurement for a safety or fudge factor. I don't want to stress myself by going under some bridge that is within a couple inches of my RV roof. A rock or new pavement could alter the height enought to touch something up there.
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Old 06-28-2012, 06:36 PM   #7
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Quote:
Originally Posted by Bobb.25 View Post
OK, this may be a stupid question,...but I don't know the answer, so...How do I measure the total height of my Class A ? We all know how important it is to know your minimum clearance. I don't have all of the original RV literature for my used class A. Measuring with a carpenter's tape measure is complicated by the fact that the roof is well rounded on the edges. I don't have access to a transit for triangulation. Any ideas other than driving around looking for an underpass that just barely fits ?
Make sure your air bags are full-if equipped- before measuring
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Old 06-28-2012, 06:39 PM   #8
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Which Magellan GPS has the height warning feature?
Don't know about a warning but they say it will do the following...

RV9165T

An extra-wide, high-definition 7-inch touchscreen offers large vehicle and RV settings that map routes based on vehicle height, width, length, and weight. This intelligent navigator will plan routes according to your preferences, making the drive much more error-free and enjoyable for you, your family, and friends
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Old 06-29-2012, 10:52 AM   #9
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If you trust your GPS and can power it "Hand held"

Plact it on the ground, NOTE the altitude

Place it on the HIGHEST part of your RV, Again note the altitude

Subtract

Or park next to something you can "paint" with a laser beam, using a laser level on top of the ride (make sure ground is level) paint the thing you are parked next to and measure the height of the red spot.
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Old 06-29-2012, 01:44 PM   #10
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I would not rely on any owners manual to tell me the height of my motor home. I would measure it, using any of the methods mentioned here. This is one measurement that absolutely must be correct, because of the possible damage that results from being just a little bit shy of your "estimate".

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Old 06-29-2012, 02:11 PM   #11
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Quote:
Originally Posted by bounder50
Which Magellan GPS has the height warning feature?
I just read a thread about a POI (Points Of Interests) file you can get cheap and load it into any GPS that is able to load POIs. This POI has most low clearences in the US and maybe Canada. When I find it I will post here.
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Old 06-29-2012, 02:24 PM   #12
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Here's the thread: Disaster Averted!!!

Here's the site: Lowclearances.com
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Old 06-30-2012, 03:10 PM   #13
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Originally Posted by bounder50 View Post
Which Magellan GPS has the height warning feature?
The Magellan 9165RT. To clarify my earlier post, I should NOT have said it gives an actual warning of a low clearance. Instead, it routes you around low clearance areas. Poor wording on my part!
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Old 06-30-2012, 04:03 PM   #14
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poi factory has a good app(free) that works well with street and trips. i have not tried it on magellan yet.
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