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 > Your search for posts made by 'JiminDenver' found 1317 matches.

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RE: mppt vs pwm

Sweet deal on the batteries! On using the Eco-w's in parallel. I started doing it because my panels were mismatched, otherwise I would have bought the Rogue 30a back then. I can use three systems to run the little AC but I don't intend to install like that. Whatever gets mounted will be run by a larger controller, not multiple Eco-w's. That's too much wiring, fusing, switching and too few features to deal with the extreme temps in storage. (-20f TO 105f)
JiminDenver 01/29/15 05:55pm Tech Issues
RE: High altitude cooking

Another way of thinking of it is like you got a new stove, it just takes a bit of getting use to.
JiminDenver 01/29/15 04:28pm General RVing Issues
RE: High altitude cooking

We live at a mile high and camp at closer to two miles up. Water boils at a lower temperature so cooking times are extended. Give your crock pot some extra time to do the job and you will be fine.
JiminDenver 01/29/15 07:44am General RVing Issues
RE: Considering Purchasing a Used Travel Trailer

Renting to see if you actually like it is a great idea. Your truck has a tongue weight limit of 900 pounds due to the rear end. That generally means you can tow a 5500 pound dry weight trailer loaded to weigh 7000 lbs and be within the 900 pound tongue weight limit. That will also leave enough payload for you, the kids, travel bag of goodie and a small cooler. put the rest in the trailer. Our trailer is 25 ft, weighs 4200 lbs dry, has no slide but does have two bunks so while it gets cramped on rainy days, it is functional and very easy for either of our Expeditions to tow.
JiminDenver 01/29/15 07:36am Travel Trailers
RE: How rough a road will you drive down for a place to camp

Ok Take the video of the truck pulling the 5er up that hill. Make it a pair of uneven ruts with some healthy rocks and maybe a few holes where someone got stuck and you have our last leg of the last trip. It was slow going for a few miles and that was after 3 miles of washboards on the good trail. As long as it doesn't rip the plumbing off, we are ok.
JiminDenver 01/28/15 10:46pm General RVing Issues
RE: Hensley Arrow and 37 Foot long, 11 foot Tall TT

Welcome back Dan. Congrats on the new rig!
JiminDenver 01/27/15 09:38pm Travel Trailers
RE: Ultra light TT

What other things do you think you will need? We have an Ameri-lite ultra lite and have used it here for four seasons with no issues. It wouldn't be much good for true winter season camping though. Other things to think about is how you will be using it. The size of the tanks don't matter if you plan on having hook ups, but they sure make a difference when you dry camp or boondock. (lots of that here)
JiminDenver 01/27/15 09:34pm Travel Trailers
RE: Anyone using Campfire in a Can - Facts & Opinions from users

I researched quite a few propane pits before buying the one lowes has for $99. It's between the Little red and the campfire in a can as far as size and flame height. From what I could see the camp fire in a can can be really cranked up to bon fire levels if you wanted. I'm not sure how long a tank would last at those levels. We use both the propane pit and wood fires if allowed. The pit is nice not just when fire bans are on but also that first night before I have wood or any night we don't want to have to be out there half the night. It is less heat but once the light drops all you see is the flames and you can't tell it from real.
JiminDenver 01/27/15 09:13pm General RVing Issues
RE: mppt vs pwm

There's no such thing! When the charger controller is not working in mppt mode, it's working as a voltage regulator (constant voltage). That means pwm control. "Not sure what PPT is?" I think maybe it's this... "the controller is not looking for maximum power, but only the power needed to supply the demand." Just because one person doesn't know or understand something doesn't mean it doesn't exist. From Arizona wind and solar. click Excerpt How a Maximum Power Point Tracker Works: The Power point tracker is a high frequency DC to DC converter. They take the DC input from the solar panels, change it to high frequency AC, and convert it back down to a different DC voltage and current to exactly match the panels to the batteries. MPPT's operate at very high audio frequencies, usually in the 20-80 kHz range. The advantage of high frequency circuits is that they can be designed with very high efficiency transformers and small components. The design of high frequency circuits can be very tricky because the problems with portions of the circuit "broadcasting" just like a radio transmitter and causing radio and TV interference. Noise isolation and suppression becomes very important. There are a few non-digital (that is, linear) MPPT's charge controls around. These are much easier and cheaper to build and design than the digital ones. They do improve efficiency somewhat, but overall the efficiency can vary a lot - and we have seen a few lose their "tracking point" and actually get worse. That can happen occasionally if a cloud passed over the panel - the linear circuit searches for the next best point, but then gets too far out on the deep end to find it again when the sun comes out. Thankfully, not many of these around any more. The power point tracker (and all DC to DC converters) operates by taking the DC input current, changing it to AC, running through a transformer (usually a toroid, a doughnut looking transformer), and then rectifying it back to DC, followed by the output regulator. In most DC to DC converters, this is strictly an electronic process - no real smarts are involved except for some regulation of the output voltage. Charge controllers for solar panels need a lot more smarts as light and temperature conditions vary continuously all day long, and battery voltage changes. Smart power trackers All recent models of digital MPPT controllers available are microprocessor controlled. They know when to adjust the output that it is being sent to the battery, and they actually shut down for a few microseconds and "look" at the solar panel and battery and make any needed adjustments. Although not really new (the Australian company AERL had some as early as 1985), it has been only recently that electronic microprocessors have become cheap enough to be cost effective in smaller systems (less than 1 KW of panel). MPPT charge controls are now manufactured by several companies, such as Outback Power, Xantrex XW-SCC, Blue Sky Energy, Apollo Solar, Midnite Solar, Morningstar and a few others.
JiminDenver 01/27/15 03:55pm Tech Issues
RE: Solar oven/ cooking

So today we had sun so I put a rack of ribs and a few taters in the oven at 9:45 in the morning and left them in there until we lost the sun to the shadows at 4 pm. They looked burnt and I was worried they were dried out but I shouldn't have. They were as moist and dissolve in your mouth tender as i could have hoped for. http://i89.photobucket.com/albums/k203/denverwingsfan/20150125_162238_zps8df82b37.jpg width=600 http://i89.photobucket.com/albums/k203/denverwingsfan/20150125_163930_zps82dc90cf.jpg width=600
JiminDenver 01/25/15 08:20pm Camp Cooks and Connoisseurs
RE: Have you ever heard of paying for pre-delivery inspection??

It reminds me of seeing new cameras at stupid low prices. You would get no battery, cords, cards, software, or lens. They had all of that and by the time you completed the kit, it cost you more than buying it at normal prices. My question is that I always see people say that it's the dealers that have a deal with the factory and fix all of the things the factory screwed up. So now they expect to get paid from the factory to make it right AND from the customer too. Niceeeeeeeee
JiminDenver 01/24/15 11:51am General RVing Issues
RE: lucky to be alive

I'm glad you are doing better, place wouldn't be the same without you.
JiminDenver 01/24/15 07:09am Around the Campfire
RE: Have you ever heard of paying for pre-delivery inspection??

I worked at a car lot when I was younger. They would add on fees until the customer bulked. Since then I ask for the out the door price, all fees included. I want the real cost to decide on, they can explain the fees later.
JiminDenver 01/23/15 02:34pm General RVing Issues
RE: Solar oven/ cooking

well I decided to give the Sport a try today. It's partially cloudy and I had to use the reflectors to get it to maintain 200-250F so I didn't want to put anything expensive in there in case the clouds got worse. I found a box of Jiffy cornbread mix and made muffins instead. I left them in for a few hours and they pricked cleanly with a skewer. I think I could have taken them out sooner but that's the nice thing about the lower temp oven is that it wont burn things if you go a bit long.
JiminDenver 01/23/15 01:28pm Camp Cooks and Connoisseurs
RE: Solar oven/ cooking

Roy The basis design is simple and there are a number of ways to do it. I had intended on making one but finding one new so inexpensively was too good to pass up. the difference between a solar oven and a solar cooker is that the oven is black inside to absorb the heat. A cooker reflects the light onto a black vessel that cooks the food inside. I took the oven out for a second test at 3 pm and after a half hour it was holding 225 without the reflectors. I didn't remove the lid when I brought it in and a half hour later it is still 125F inside. The difference between the magnifying glass concept and the dish is the dish focuses the light from below like a stove would. Here is a page of plans for solar cookers. I used a wash basin and black pot to heat water in the tenting days, it was nice washing up or doing dishes with hot water. plans
JiminDenver 01/22/15 03:58pm Camp Cooks and Connoisseurs
Solar oven/ cooking

I found a solar oven on craigslist for $50 and it was complete except for the cook book. Anyone here use one? I read a review that said it was slow to heat but even though it's below freezing outside it took only 15 minutes to hit 315f and that's hotter than I'd want to cook my ribs at.
JiminDenver 01/22/15 02:02pm Camp Cooks and Connoisseurs
RE: mppt vs pwm

PPT is power point tracking. The "M" is when the controller is tweaking the system to bring up the batteries voltage the most effective way in bulk.
JiminDenver 01/22/15 12:10pm Tech Issues
RE: mppt vs pwm

BFL You still have PPT and MPPT confused. PPT is always on, MPPT is in bulk only because it is not linked to the battery voltage and acceptance rate.
JiminDenver 01/22/15 11:15am Tech Issues
RE: mppt vs pwm

I doubt at this point it is necessary with the explanation given BUT if you want more test...it's below freezing and sunny here. I planned on testing my little solar oven anyways and can drop a panel on the driveway while I'm at it. Voc, Vmp, battery voltage I can do but please no Isc. At these temps all I'll be able to tell you is that they are over 10a as I hear the pop and my meter dies. lol
JiminDenver 01/22/15 11:04am Tech Issues
RE: Is this a good deal in Quartzsite?

It wouldn't be the first time someone tried to play on the ignorant. There is a person here selling 70w panels, some wire, a cheap PWM controller and a set of batery clips for the low low price of just $369. When he tried to advertize on a RV board I called him on it as the parts were a fraction of that. He said he was looking for the stupid and lazy to sell to. Any one that knew anything about solar and it's cost wouldn't be calling him and he knew it. Sounds like he made it to the Q. lol
JiminDenver 01/22/15 10:33am Tech Issues
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