I have a 3000 watt yamaha invertor generator that I haul around in the rear tack area of my Exiss 3 horse LQ. It is a perfect spot back there under the saddles. I hate dragging the bloody thing out ! I have a ramp which makes it easier but usually I'm trying to drag it through gravel or dirt and it doesn't roll worth a darn with those baby wheels on it. And it ain't light! Then if we leave camp I have to haul it back and lock it up so it doesn't grow legs.

 I'm thinking about semi permenantly mounting it in that rear tack area and cutting a round hole through the floor for exhaust access and maybe cutting in a louvered panel on the side for the heat build up. Has anyone done this ? and if so, have they had any issues with heat, fumes, etc.

Stupid question, but would the addition of larger or wider wheels make the movement of your generator any easier to manage?

As you mentioned, you will need an adequate air source, inlet and exhaust, for its combustion and cooling, and a separate extraction for the exhaust gasses. I don't think under the trailer would be a good exit for the fumes. They could be trapped and seep into the stalls and LQ. Straight out the roof or high on the sidewall, with a deflector would be a safer exit.

You could easily build an insulated box of rigid material, surfaced with foil faced insulation.

I have considered the same installation areas of our Exiss and Sidekick trailers, using the smaller Yamaha 2800. Tentatively, I have made plans to build and mount a heavy duty sliding shelf system, on each of the tack compartment floors. The 2800 generator is less than half the weight of yours, and it would be very easy to change it between trailers, and slide it out on the shelf while it's being used. It would eliminate the necessity of having the permanent built in situations you may need.

Gard

I saw an Elite LQ that had alow profile looking Onan generator and alum fuel tank up on the hay rack. That was a nice setup . But I am without hayrack. I am also without mangers, an option one person offered. I have considered building a cart with bigger wheels, that would be a good idea too.

  I appreciate  the input from you all.

That sounds like the genturi system.  They sell it at camping world.

http://www.campingworld.com/shopping/item/gen-turi-generator-exhaust-system/14041

Maria

What did she do with the exhaust gasses? Was the generator run while she was sleeping? Some time ago, we had another thread posted, wherein the trailer owner complained of various maladies whenever her generator was running. It was under the goose, and the exhaust was entering her LQ through poor seals in a slide out. Sounds like a dangerous place for mounting, unless the exhaust is rerouted.

Gard

I have Yamaha Inverter that I use with my Cherokee. I am in the process of mounting it under the gooseneck. I am building a contraption that will look almost like a patio BBQ... the lid unlocks and lifts up and has two telescopic stays to keep it open - this will give it ample ventelation. The exhaust I am routing to the roof which makes it extreamly quiet... you can hardly hear it. Will let you all know how it works when it is done.

Mine is not electric start so a hay rack mount is a no go and my rear tack is always too full....

My generator is electric start, BUT I have to move the choke lever to crank it whether I use the yank-thing or the key so hayrack mount ended up not working out for me either. I just leave mine in my truck bed 24/7. It's relatively quiet (not as good as the Yamaha's, but better than 85% of the portable ones used by other people at the barrel races/jackpots/rodeos I go to). This way, if I forget to take my extra gas can, I can just drive to the store to top off the tank or whatever. I can also park in different areas to keep the noise away from directly under the bed when I'm sleeping.

We also figured out that me, trying to climb the hayrack ladder with 5 gallons of gas would end up a minor disaster. I haul by myself 99% of the time and I hate depending on other people so I had to settle with keeping mine in my truck.

It came with a wheel kit, but hubby didn't attach them and it's probably better that way. It fits in the bed perfect. I really need to lock it in there though. It's in the same truck I drive to work everyday and I guess if people WANTED to be jerks, it wouldn't be terribly hard to take.

Good idea! I'm now thinking that this next summer I might just use the box of my pickup. I have to pull start my generator some times and choke it too.I could rig up a temporary exaust stack to get fumes above the trailer . It would be a heck of a lot easier to chain my generator to my headache rack then to build an insulated box, vented panel and start cutting holes in my trailer until I have a good plan.

We use a Yamaha 2400 it is light enough to carry out of the mid tack and chain to the nearest tree.   But it is strong enough to run the AC and make coffee!  Could we ask for anything else :)  Love it.