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offgrid View Drop Down
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Direct Link To This Post Topic: Bumper generator tray
    Posted: 10 Apr 2021 at 7:37am
Thanks Dengle.

A cookie sheet or pan is a just a flat aluminum pan with a little lip used to bake cookies. It will catch any oil drips from the generator, it also provides a slippery surface so it's easy to slide the generator around in the back of the SUV. I side it to the front of the cargo area and strap it.

I solve the stinky gas and gas can problem by not using gasoline. I converted my Honda 2k to propane and run that. There is already propane on the tongue so one less thing to drag around. You can carry a second propane cylinder as well if you want to. Engine burns clean and carb never gets gummed up.

I think you should be fine with your tow vehicle, but I always suggest you load everything up and get actual weights to compare with your specs. That way you have a known good baseline to work from. If you do a search I have written up a procedure to do that at a public scale, and a link to an online calculator which will keep track of all your limiting weights as well as let you play with your wdh settings. Often as a taxpayer you can get your weights for free at your county waste transfer station.
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Direct Link To This Post Posted: 10 Apr 2021 at 6:58am
Originally posted by offgrid

I have an SUV and keep my generator in a cookies sheet in the cargo area, as far forward as possible. Works fine.


offgrid: I enjoy reading and following your posts since having a 2015 Rpod 179 towed by a 2020 Grand Jeep Cherokee (6cyl) w/trailer package (having a 6200 tow capacity), somewhat exceeding your SUV Highlander. I have an inverter generator (50 pounds) and also have concerns re tongue weight. Question 1: What do you mean by generator in/on a cookie sheet within the cargo area of your Highlander? 2. What's a cookie sheet? 3. What about smell of gasoline should the generator be within the SUV or positioned in trailer near tongue? 4. You're a boondocker - Do you carry a small portable fuel can for gasoline? If so, where do you carry it? 5. Perhaps not tongue weight, I intend removing bicycle front wheels (2 bikes) and carrying in SUV cargo area. Yes, I have a Fastway E2 Equalizer Hitch. Haven't carried this stuff before and am cautious. Without these items, the trailer pulls nice and quite doable with the SUV, as you often say about your Highlander.
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Direct Link To This Post Posted: 09 Apr 2021 at 11:39am
I think that FR gets the frames made by Lippert. At least they used to.
bp
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Direct Link To This Post Posted: 09 Apr 2021 at 9:16am
Thanks for the opinions and comments, not sure what I will do, just researching and thinking through things.

Looks like the 196 has a 5" C channel frame that runs the the entire length. It could be a box frame, not sure since the bottom is enclosed, but I would doubt that FR would use box tubing. With the rear kitchen and pantry area, maybe the frame is a little more robust in that area? I know these models did not exist more than a couple years ago, so maybe there have been some changes over time.

I do have a welder and have the ability to do some welding, but would rather not, at my age these things are harder to do. 

Thanks again!
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Direct Link To This Post Posted: 09 Apr 2021 at 9:04am
look at a product called 'Jack E Up".  I have used one for several years.  It allows one to take the trailer jack off of the front and allows the tailgate to open.  One can also step across the tongue easier .  Jack stores in the compartment when underway.
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Direct Link To This Post Posted: 09 Apr 2021 at 7:51am
Because there isn't a sticker doesn't mean there aren't limits, of course there are.

The frame is a cantilever structure supported by the axle attachment There is in addition a moment applied by the torsion axle at that same point. So when your trailer axle goes over a bump you get the combination of the two trying to bend the frame at that spot.

I did the load calcs on the frame and torsion axle loads (with nothing additional on the bumper) and got a safety factor under 2g at yield. 2g is not much of a bump load, most guidance is to design for around 3g or even higher. Rpods are lightly constructed, to be generous. The calcs were posted a couple of years back, you could do a search for then if you wanted to. And we have had one at least failin bending there.

That was for the 179, don't know what it would be for your trailer. Of course, you can do what you want, just be aware of the risk involved. Or, you can reinforce the frame in the axle attachment area, I've been v thinkig about doing that myself.

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Direct Link To This Post Posted: 09 Apr 2021 at 7:10am
I could chose to remove certain items from the TV to create space. But, that is just one of the issues. When dry camping in a parking lot overnight, I may need the generator to run the A/C, and the only way to get to it would be to unhook the trailer in order to open the rear hatch. Not sure I want to do this in a parking lot, or for a one night stay. I just can't imagine that the rear structure of the 196 will not support another 100lbs. I do realize that the 100lbs would create more force over bumps, but the COG of the added load would only be 5" past the bumper. The frame appears to be made of 4x2 square steel, and the bumper 4x4. But I'm sure it is fairly thin metal. 

There are no stickers about a suggested weight or weight limit on the bumper.
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Direct Link To This Post Posted: 09 Apr 2021 at 6:45am
There is more to the weight issue than just balancing tongue weight or having a sufficiently strong bumper. The trailer frame itself is not engineered to add heavy stuff back there. I checked the loading calcs and it's weakest point is the rear of the axle attachment bracket. It is quite marginal as it is, and at least one member here has had a frame failure at that point.

I have an SUV and keep my generator in a cookies sheet in the cargo area, as far forward as possible. Works fine.
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Direct Link To This Post Posted: 08 Apr 2021 at 10:04pm
Okay. I stand corrected. What does the documentation or label for the bumper say about weight capacity? I have not seen the 196, so I can't say. My 179 does not have a square bumper. It has no bumper, just the hitch and spare tire carrier mounted in it.
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Direct Link To This Post Posted: 08 Apr 2021 at 8:58pm
Originally posted by StephenH

It won't work. The RPods do not have a square rear bumper to which it could be clamped. The stock factory hitch won't take that kind of stress. You don't want your generator bouncing down the highway.


While I would always be VERY cautious about putting much weight on it, my 2021 196 has a square rear bumper of the industry standard size. It's how it is attached to the rather minimal rear frame that give me pause...
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