If I was gonna go through all that I think I would buy a ramp designed by Moryde.
MOR/ryde does make a ramp, or at least they did at one time. Like their baggage doors, they were well made and a quality product, and it came with a price. There is a reason you see very few Big Horns with aluminum baggage doors.
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The question that keep's lingering in my mind is..... if you can keep the moisture out, will the ramp hold up? Mine is 6years old and seems okay,
My ramp was 7 years old, almost to the month.
Next time your ramp is open, look at the hinge end. Each hinge is held on by 3 bolts and 3 well nuts.
If the well nuts on the no skid portion are rusty, you have a problem.
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I wonder if at this point you would be better off constructing your own ramp.
$$$ and you would need a 9 foot square perfectly flat workplace. Add to that a MIG or TIG and a source for 8' square ge-lcoated fiberglass sheets.
Aluminum is not a problem, I have an excellent supply house right around the corner. Just picked up a piece of aluminum angle so I can make a sealing surface for the top.
3/4" x 3/4" x 1/8" x 10' = $5.63
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For those replacing their ramps, just how heavy is that thing anyway? Just curious.
Shipping weight was listed as 350 pounds. We could not get it out of the trailer in the crate, so we un-packed in the trailer, laid it down and 2 of us easily moved it out unto the top of my truck.
I was able to move the ramp from my truck to a garden trailer by myself. I would guess the bare door is 150 pounds or less.
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Since we don't use the ramp for a patio (it's not designed for that), it's either up, or down. I've thought about bolting a pair of those aluminum loading ramps to the top and bottom of the ramp door in line with the the removable chokes where we tie down the Harley's, but I don't know...I'll do some real studying on it this Winter.
It is not just the load you take in and out that is a concern. It will be clear when I post the autopsy pictures.
The hinges and pressure that the springs exert is just as much of a load in a very concentrated area.
All of the areas where the outer skin cracked moving the bike or golf cart in or out was around the hinges.
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You can always lay some aluminum diamond plate across the ramp side glue and riven in place. Rivet to the outer aluminum frame.
See above for RE the hinges