Good Sam Club Open Roads Forum: Truck Campers: Sidewall of truck height
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Bradymydog

Western MA

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Posted: 10/19/20 06:14am Link  |  Quote  |  Print  |  Notify Moderator

On my 2018 GMC, where the bed meets the sides at the tailgate there is a radius molded in. I raised my bigfoot 1" by using a full 1X8" pine board. The board is notched and tapered on the bottom to conform to the contour of the bed. I then put a full sheet of 1" foil face poly iso for the remainder of the bed and placed my bed mat on top of that. No problems in over 10K miles.

woodworker414

Crystal City,Mo.

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Posted: 10/19/20 11:21am Link  |  Quote  |  Print  |  Notify Moderator

Thanks BradyMyDog


Bill
WØWJU
Life is a trip, ENJOY the ride.
Safe Travels.
2015 Thor Motorcoach Chateau 31W
Toad: 2008 Chevy HHR
2015


MORSNOW

Mountain Home, ID

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Posted: 10/20/20 09:08am Link  |  Quote  |  Print  |  Notify Moderator

Supercharged111 wrote:

My 1131 sits ass down in the bed of my 97, I'd like to hear more about this crown. Is there a bulge in the middle or something?


There is a crown that runs widthwise across the bed around mid bed. I grabbed a 4' level and started at the rear of the box and slid it forward towards the cab, there is a definitely a noticeable crown that appears as the level rises off the box at the crown. I'm pretty sure it's purpose is for water drainage towards the tailgate and front drainage holes, but it can cause a porpoise effect with a truck camper. You can also see it in GM truck camper pics from the side, campers appear nose high due to compressing the rear of the rubber mat with the front of the camper not sitting flat on the bottom of the box.


2014 Wolf Creek 850SB
2012 GMC Sierra SLT 2500HD

7,220# Truck/10,400# Camper Fully Loaded


JRscooby

Indepmo

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Posted: 10/20/20 10:34am Link  |  Quote  |  Print  |  Notify Moderator

MORSNOW wrote:

Supercharged111 wrote:

My 1131 sits ass down in the bed of my 97, I'd like to hear more about this crown. Is there a bulge in the middle or something?


There is a crown that runs widthwise across the bed around mid bed. I grabbed a 4' level and started at the rear of the box and slid it forward towards the cab, there is a definitely a noticeable crown that appears as the level rises off the box at the crown. I'm pretty sure it's purpose is for water drainage towards the tailgate and front drainage holes, but it can cause a porpoise effect with a truck camper. You can also see it in GM truck camper pics from the side, campers appear nose high due to compressing the rear of the rubber mat with the front of the camper not sitting flat on the bottom of the box.


Might be for drainage, but not sure they expect the truck to be parked level enough to matter.
I'm more inclined to think it is a fold line to absorb energy and keep the floor out of cab on impact.

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