Rear mounted generator

And that's what has got me worried about doing it to the rear. The weight.
Convince is one thing but I don't want to damage our 5th wheel we just got.

It wouldn't be something we take with is all the time.
More so when we go to our property in the middle of no where for a getaway
But there would be other times we would like to take it along on our longer trips away from home for weeks on end.

The unit I think is about 280lbs, and the fuel tank empty which will be plastic from summit racing. And using aluminum to cut down as well. Hoping I can keep it just a little over 320ish pounds.

I had a 4300is Subaru mounted on a custom welded rear platform on the rear of my prior TT it worked great.
However it added a lot of weight to the rear. The 6500 Onan will be even heavier.
Be sure your frame is up to the added stress of the weight it will drastically impact your pin weight

Jasult I like that idea of more than one mount. distrubut the weight of it around, the gen that I have is a bit bigger than that I may branch off on your idea.

Was thinking maybe shorting up the distance from hitches to try. I know not much but some is better to relieve the extra torque when say bouncing around back there.

My only issue with mounting in the bed or my truck is I have a 2nd gas tank already in place.
I have a Transfer Flow 40 gallon auxiliary tank and the only place to mount it would be to make a frame to go above that.

I will have to look into if my trailer is prepped for a gen, I know it was prepped for a second battery but did not notic anything else while I was in there.

And I wasn't sure if having that dolly wheel would throw me into that category or not.

As for the design of the box itself I was thinking of building it out of aluminum with fiberglass sides and sound deadening material on the inside. He material is also fire rated so it serves double purpose and is light weight.

Check out how I mounted on rear


more pics in link
click here

Nicholsfamily05 wrote:
Evening.
Couple questions about mounting my generator to the rear of my 5th wheel camper.

I have a 40' foot Cross Roads Crusier bunkhouse and I would like to install my Onan 6.5K generator on the rear of the trailer.
I was thinking of getting the brackets that mount inbetween the frame and protrude out the rear under the bumper.
Once there I was thinking of fabricating a small deck just big enough for the generator and a small fuel cell inside a small sound proof box. To help with the added weight of the design was thinking of one or two tires mounted to the tray to assist with bounce as I have seen this on larger trays that haul scooter, golf carts and such.
I have thought of adding it to the front compartment but with the added gas tank and working around filling it along with ventilation and exhaust piping mounting to the rear is easier.
Would like to see what you all have to say about this setup.
Thanks in advance for the input.

You sure your FW isn't gen-prepped in the front compartment? A lot of those issues are part of the prep. Also, adding a swivel-wheel tote may not be legal in all states, even though it's connected to the frame and not a hitch; some states do not allow double-towing and classify these as a "trailer". Better off building a hefty sub-frame to carry a cargo platform for about 750 lbs. Also, you =can= get pre-made gen-boxes. There is also a really neat gen-box build thread from about 3 years ago. I know that MountainMaster here in Phoenix builds a really nice gen-box, but it's spendy. Some fiberglass boxes available, too.

Lyle

I agree with the truck bed if possible but I have mounted a genny on the rear bumper of a TT. It needs too be good and strong as it gets a slamming effect or whipping effect. I made one for a generac 3500/4000 remote start propane conversion. I boxed it in and had a 12 inch axial fan from Grainger that started up as soon as the generator fired up. I used a rigid foam called thermax to line the enclosure as it has a high fire resistance and is often code for crawl spaces and basements. Problem was that I dont think it worked that well to dampen the sound because of the rigid nature. So over all I would never convert one to propane. Gas is easy and sold on every street corner.

I now have a 5er and mounted a 3000 Honda remote start in the truck bed in front of the hitch. It's bolted to the bed and has a 12 gauge metal enclosure with a lockable lid. I used the same 12 inch fan to ventilate it and used wavey foam panels glued inside that are about 1 to 1 1/2 inches thick. It's the quietest Honda and the enclosure helped even more. if I park the truck with the hood to the 5er hitch you just about cant hear it inside.

One of the things that happened with the TT bumper mount was a certain amount of vibration or harmonics by being attached to the TT. I used the original rubber mounts from the Champion generator but I think it was an issue. It depends on how you want to use it too. if you need it for rest stops in warm weather or battery charging for limited runs, it will be fine. If you are going to use it a lot I would shoot for ultra quiet. I'm figuring out a way to make a small hoop type easily removable foam "tent" to put over mine to quiet it even more. I have had people say they didn't even know I was running a generator until they walked up close to the truck. I'm just going to come right out and say it......I love my Honda. :)

Similar to this


Gutted Champion








Still needed to build a lid and add filler panels

Sound proof box needs to have plenty of air circulation to avoid overheating the generator.

I have a twin I beam frame and a class III hitch (rated for 600lb) welded up on the rear. I used it to pull a boat with about a 400lb hitch weight. What does your genny weigh?

Go ask a pro welder about your plan. Ask him if your frame will hold up the genny and accessories you envision. For the size you are talking about I think the truck bed is a better option, but not knowing your frame and weights I am just guessing.