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 > Your search for posts made by 'KD4UPL' found 218 matches.

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RE: Portable Wind Turbine as a power supplement?

If you add the drag of a wind turbine to your RV then the engine needs to work harder to overcome the drag. You will be wasting energy with the "mobile while driving" set up. That's just a physics problem. As for stationary use, small wind turbines are typically rated for maximum output at 28 mph wind speed. I don't know about you but camping with a steady 28 mph wind does not sound like fun at all to me. The energy available in the wind is based on the cube of the wind speed so if you cut the wind speed in half you cut the potential energy by a factor of eight. So, let's reduce that wind speed to a more reasonable 14 mph. A typical small wind turbine like the Air-X is rated at 400 watts at 28 mph. With a 14 mph wind speed it is now only making 50 watts. No, you can't use a gear box to speed it up, again, physics is against you. There just isn't enough energy in slow wind to make it worth trying to recover it.
KD4UPL 09/18/20 04:52pm Do It Yourself Modifications and Upgrades (DIY)
RE: Dodge 1500b van

Is it a 727? We don't know the year of the van. I though a 727 was a 3 speed. I would think most vans that are still on the road would have a 4 speed?
KD4UPL 09/17/20 07:43pm Tow Vehicles
RE: Dodge 1500b van

I assume this is around a 90's vintage maybe? Those automatic transmissions were not the best. Dodge has never been known for good automatics.
KD4UPL 09/17/20 03:31pm Tow Vehicles
RE: Ford 7.3 gas burner mpg hauling TC

It won't be much different than towing a trailer. A TC is a huge aerodynamic drag which decreases fuel efficiency. I used to get about 10 mpg with my Chevy diesel hauling my 11' TC. I get the exact same mileage using the same truck (with no camper) to pull 10,000 pounds of flatbed trailer and excavation equipment.
KD4UPL 09/16/20 07:07pm Truck Campers
RE: Deep cycle battery maintenance

Just keeping the water above the plates is a dangerous gamble. If those plates ever see air it will ruin a battery in a hurry. As has been stated, the water needs to be at the bottom of the fill tube. This allows a bit a reserve. I suspect your batteries need water to achieve this level.
KD4UPL 09/14/20 06:54pm Tech Issues
RE: Need hitch advice please.

The adapter, all adapters, have to go. I highly doubt they are designed for use with a WDH. You should be able to adjust the WDH head to get things level with no adapter. If not, you need a different hitch head.
KD4UPL 09/14/20 06:50pm Towing
RE: Inverter

What inverter? Make and model? Did you hook the batteries up with the right polarity? Turn off your main inverter DC disconnect, wait a minute, and turn it back on; that will often reboot an inverter.
KD4UPL 09/14/20 06:47pm Tech Issues
RE: 15.2 v during solar equalization charge - what do you do?

Magnum inverters handle up to 17 volts DC. Outback also handles up to 17 volts DC. I suspect others are similar. The bigger question is do you have flooded batteries that need to be equalized or do you have AGM batteries that shouldn't be equalized. You can turn off the auto equalization function, I think it's DIP switch #5. That's probably the simplest solution. One of the main reasons for an equalization charge is to "stir" the electrolyte to prevent stratification. That's hardly needed in an RV where the batteries are constantly bumping and bouncing down the highway.
KD4UPL 09/13/20 07:39pm Tech Issues
RE: Just bought Truck Camper- how do I move

The guy that bought my 11', 4,000 pound TC didn't put tie downs on his truck despite me telling him he needed them. He arrived here in VA from IN with NOTHING. I gave him 4 of my ratchet straps because he insisted that would work. He made it home to IN. I don't know how well it went.
KD4UPL 09/13/20 07:32am Truck Campers
RE: Class C

I've never seen nor heard of one on a van cut-away chassis. Even though the Duramax was available in vans I guess they never used one for a motorhome. The Super C MH on the Kodiak/Topkick chassis are the only ones with the Duramax that I'm aware of. Ronfish gave you the years on those. I'm looking for one of those motorhomes myself because I need the towing capacity for my 6,500 pound boat but I refuse to have a Ford. A lot of the Kodiack MHs have the 8.1L gas engine which would also be fine with me. Either way it will have the Allison automatic.
KD4UPL 09/12/20 11:15am Class C Motorhomes
RE: Solar + DC to DC Chargers

Can't you just hook your D+ wire to a switched wire in the truck that is only hot when the key is on? This should work as long as you don't spend much time with the key on but the truck not running. I wouldn't think you would spend much time with it that way. There are voltage controlled relays. Sometimes also called automatic charge relays. Blue Sea makes one. They are typically used to combine 2 batteries to be charged by an alternator only when the engine is running. They will sense the voltage, make sure it's above 13.6 or whatever the set point is and then combine. They are typically large and made to carry high charge currents which you wouldn't need for your application with just a signal wire but it would still work just fine.
KD4UPL 09/12/20 11:09am Truck Campers
RE: Effect of weight on braking for trucks.

You have to be careful telling people they should get a diesel because it will help them slow down better. This is not at all true. A diesel engine has less engine braking then a gas engine. All new turbo diesels have them in one form or another and have had them for quite a few years. weather it is by use of a varable vane turbo or a true exhaust brake, no gas engine has close to the engine braking power of the moderen disels. Steve New maybe but the line was "braking is one reason to consider a diesel engine." This does not universally apply. Many, many older diesels do not have an exhaust brake; I drive one every day, a 2005 Duramax dually. I don't think even all newer diesels have them. The 2015 Ford Transit van diesel I used to drive at work did not have one. As far as I know Duramax vans, Sprinter vans, Nissan pick-ups, RAM Eco-diesel, F-150 diesels do not have them either.
KD4UPL 09/10/20 05:32pm Truck Campers
RE: Effect of weight on braking for trucks.

If you are the kind of driver who primarily relies on the brakes to stop you will probably have problems, particularly if hauling a TC. Many people do not seem to know you can coast a vehicle. They have their foot on either the accelerator or the brake at all times. I can let off the accelerator nearly a mile from my driveway at 55 MPH and still be doing about 40 MPH at my drive way because it is downhill. I typically also engage tow/haul mode to allow the transmission to downshift and help slow the vehicle. I barely need to use the brakes to come to a stop. I bought my 2005 Chevy dually new, it's a work truck and is always hauling, towing, or both. When I carried my TC the whole rig was about 13,000 pounds, 1,6000 over the GVWR. The factory rear brake pads lasted until 185,000 miles. I don't even have an exhaust brake. I would suspect that a modern diesel with an exhaust brake would need the brakes even less. We have a lot of mountains in my area. I always gear down for the grades and don't use the brakes that much. It's not uncommon to follow someone in a car who rides the brakes all the way down the mountain. You have to be careful telling people they should get a diesel because it will help them slow down better. This is not at all true. A diesel engine has less engine braking then a gas engine. That's the whole reason exhaust brakes were invented but not all diesels come with them. Even in new vehicles it's mostly heavy duty trucks that have them. Vans, compact trucks, and SUVs with diesel engines often don't have exhaust brakes.
KD4UPL 09/09/20 06:29pm Truck Campers
RE: Solar Cable Tangles

Either a split loom or a spiral wire loom would probably work well. These are often available at auto parts stores.
KD4UPL 09/08/20 05:41pm Tech Issues
RE: Campgrounds around Shenandoah Valley in VA?

I stayed at Montebello about 12 years ago. From what I remember it was nice. That is a very remote area. Don't expect cell phone service. I hope you're driving in from the Blue Ridge Parkway. Coming in from any other way is a very challenging mountain road.
KD4UPL 09/07/20 02:52pm RV Parks, Campgrounds and Attractions
RE: Is my RV a Chevy Express 3500 or 4500?

Interesting. The DOT clearly lists the top of the class 3 weight range as 14,000 pounds. Maybe Chevy just doesn't care to have their model numbers match the real weight class system.
KD4UPL 09/03/20 08:18pm Class C Motorhomes
RE: 2002 Lance 1025 on new Ford F-250 with camper package?

Just because it has the same payload doesn't mean all the components are equally rated. I don't know that package, maybe they are but I would find out for sure. Are the axles, springs, brakes, sway bars, etc. all the same or does the F350 have stronger, more capable components? You can't have too much truck with a TC as they are always heavier than they say and heavier than you think. After hauling the same camper on a SRW and then a dually I would absolutely get the dually; it was a huge difference.
KD4UPL 09/03/20 08:16pm Truck Campers
RE: Stereo question

Call Crutchfield. Their tech support is first rate. I've been buying consumer electronics form them almost exclusively since 1991 and they always treat me very well.
KD4UPL 09/03/20 08:13pm Technology Corner
RE: Pure Sine Wave Inverters best quality manufacturers?

Samlex.
KD4UPL 09/03/20 08:11pm Truck Campers
RE: Is my RV a Chevy Express 3500 or 4500?

What's the GVWR? If it's over 14,000 it has to be a 4500 as Class 3 vehicles stop at 14,000 pounds according to the DOT.
KD4UPL 09/03/20 07:28pm Class C Motorhomes
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