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Old 11-15-2015, 05:15 PM   #15
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It depends

#1 How else will you be using your truck. It wasn't very often that I didn't want a cap on my pick up. ( hauling firewood, mulch, big lawn tractor )

#2 If you get a Honda 2000, it's a non issue, as they are easy to move.

#3 There are many reasons for having a cap( security, keep stuff dry, a little better gas mileage, being able to camp in it, spare camping bedroom )

#4 At any rateÖI don't think having a genny, is reason to not have a cap

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Old 11-15-2015, 05:35 PM   #16
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We use a cap on the truck and would be hard pressed to do without it, as we use the back of the truck to serve as the "Basement" of our trailer in order to keep clutter out of the trailer - it works well for us.

We do carry a Honda 2000 gennie. We mostly only it when stopping at Flying J's on our way down and back on our winter trips.

When we want to use it, I use a couple of those very heavy cables with loop ends locked together and I put the gennie on the ground between truck and trailer - there is enough gap at the tailgate weatherstrip that I can leave the gennie locked to one of the anchors in the truck bed and can still close up the tailgate and cap window to protect contents.

I don't leave the gennie out overnight though - I put it back in the truck for safe keeping when we retire for the night, and we run the furnace overnight on the coach batteries.

If time permits I will put the gennie out again in the morning to recharge the coach batteries via the AS battery charger while we have breakfast before we hit the road again.


Brian & Connie Mitchell

2005 Classic 30'
Hensley Arrow / Centramatics
2008 GMC Sierra SLT 2500HD,4x4,Crew Cab, Diesel, Leer cap.
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Old 11-15-2015, 06:25 PM   #17
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Fair Oaks , California
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I had a cap on my Tundra, and opted for a foldable bed cover on my new F-250 instead. The cap made sense pre Airstream days, when we used to sleep in there, but after we got the Airstream, the drawbacks outweighed the advantages.

Advantages: can sleep in there and can store more stuff than under a bed cover.

Disadvantages: restricts visibility to the rear, hard to get stuff out of, can't easily move objects (furniture, trees) that won't fit under the shell.

In your case, it would be easier, and safer, to run your generators in the open truck bed with a cover folded back than under a cap.

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Old 11-15-2015, 06:29 PM   #18
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Originally Posted by weber.roger View Post
Just purchased a new Silverado 4 DR Crew cab with 6.5 in bed. Towing a 19 ft flying cloud. Question is regarding a generator. I want to get one. I have seen campers who have them chained in the pickup bed and use them right there. No pickup cap so fumes etc not an issue. What about if I put on a full hard cap? Can I still run the generator if I leave the windows open on the cap? Has anyone done it. Generator will be 2 or 3000 inverter style.
There are caps that side opening windows (windoors) available that would aid in ventilation if you want to run your genny back there. The windoors also make it easier to reach your stuff in the truck bed.
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Old 11-16-2015, 11:51 AM   #19
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If you have a carpet lined cap and you run your genset in the back, your carpet will pick up the exhaust fumes. You won't notice it until you open the rear door and stick your head in. It isn't a big deal unless you plan on putting animals in the back or sleeping in the back at times. But the smell is there.
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Old 11-16-2015, 11:55 AM   #20
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I have,the Access roll up tonneau cover and love it. It's been on my truck for 8 years. Very handy just to roll it up for tall situations or using the generator.
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Old 11-16-2015, 03:03 PM   #21
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I have two Honda 2000 and a tonneau top. I move the generators to the back and when it is raining under the cover. I have not had any troubles, it does get a little warm under the cover. I do chain them.
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Old 11-16-2015, 03:42 PM   #22
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I have an undercover tonneau, I can swing it up on sunny days, or close it and drop the tailgate on rainy days. Either way, I can run it from the truck bed. The generator is a Yamaha 2400is, which will also run the AC, and is only 75#, so its easy to load into the truck bed.

It's also chained in the bed, and I lock the tonneau for extra security, when traveling.
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Old 11-16-2015, 05:22 PM   #23
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Originally Posted by TinShack View Post
There are caps that side opening windows (windoors) available that would aid in ventilation if you want to run your genny back there. The windoors also make it easier to reach your stuff in the truck bed.
I think that is the only way I would run my genny's in the back of my truck.
I have a tonneau cover now and just pull out my 2 Honda 2000's every time I stop and padlock them to the trailer tongue.
However, next truck I get I will put a hard cover on for more storage and better security.
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Old 11-17-2015, 05:24 AM   #24
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I have a soft roll up tonneau that's locked in place when tailgate is shut and locked. Yes, it could be cut, but no large items could be taken out like my gen
the rolling bar system would stop most items I carry from being taken out. Small stuff yeah! We have had this cover sense 06 replacing the hard one we had witch we hated. Newer ones must better. We have a small gen that will not run the AC and I remove it in camp grounds but leave it in when hooked up. wire size is means a lot w/ getting max amps. Non flex wire 10 works pretty good on one item or two at most. Flex wire w/multiple strands to give it flex is better and any good RV store will sell it to you the foot for a gen the 30 amp is fine. I installed a hard wire #10 to go from my near rear power pt
to the front under the belly pan then from a junction box a flex wire to the truck bed. I am sure there are sights on how to reduce the noise of a gen, Military require us to do noise reduction and in the wild a small hole is best with generator having enough space to draw clean air for carb. A closed shell with air for carb works pretty good. The breathable air for a gen is needed and a flexible exhaust is the best but you then move the noise out side.
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Old 11-17-2015, 08:55 AM   #25
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Originally Posted by Silver Hawk View Post
The shore power cord is very heavy - made to handle 30 amps. I will only be sending (drawing) less than 13 amps (1600watts divided by 110 volts).

The charging amperage is less than that - (three stage charger) - at most maybe 6 or 7 amps. (nothing else will be on).

I don't know what Airstream uses for their charging wire (blue) from TV to trailer - does anyone? (1976 AS)
Originally Posted by Lumatic View Post
I think most common is 12 ga but I have seen umbilicals with 14.
The blue charge line on my overlander is a 10 guage wire
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Old 11-17-2015, 09:43 AM   #26
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We have a cab high Century on the back of our 2500HD Silverado. Our Yamaha 2400 sits on a bed slide which allows us to roll it out when needed. Often just over the tail gate and under the lift up window. If it rains we place a plastic tarp over the area where the hinges on the window attach to the cover. Bed slide allows us to access things that are towards the far end of the truck bed. Works for us!
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Old 12-03-2015, 10:44 PM   #27
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I'm getting a combination 2k + 2k generator set (still doing my due diligence between Honda and Yamaha); and I wanted a secure, yet convenient setup for the 8' bed on my new 2015 Ram. I went with the "Pickup Pack" and bed roller combo from Highway Products. Good, secure HD aluminum on all parts with mortise locks, and no windows for people to "shop" through. You can customize, but I went with an 8' box down each side and a 4" domed cover over the bed; full 8' bed roller and headache rack, which includes a back rack that can be used for boat, ladders, whatever. We've taken two cross country trips with the new setup this tear, and I am very pleased with everything.


"Hot meals, cold beer, dry bed & flush toilet - everything I look for in a wilderness experience..."
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Old 12-03-2015, 11:07 PM   #28
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We have a cap (canopy) on the back of our truck for two reasons: (1) we have moderately secure storage out of the weather for all kinds of stuff back there, including a generator, which we wouldn't have with an open truck bed. (2) We like to travel with a canoe, which means more gear (see reason #1) and the cap permits a standard type of roof rack.

We manage with upgraded batteries and one Honda 2000, so it's not too heavy to take in and out. We lock it up when we're away from the campsite.

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