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 > Your search for posts made by 'ktmrfs' found 481 matches.

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RE: Tilting Solar Panel

Interesting discussion! I wonder why home solar panels aren't built to track the sun -- they are almost always stationary. My guess is that the cost and maintenance of tracking outweigh the gain in extra power. if the panels are facing south, and your in most of the U.S. normal roof pitch of 4/12 to 6/12 gives a pretty good angle to start with, so there isn't much to be gained. And if the panels are layed out to tilt very much you need to take into account a shadow of a lower panel on an upper panel. So in some cases, panel spacing needs to increase which decreases the number of panels so there is little advantage, possibly actually a loss. Large arrays where area is not a big limitation often do have trackers.
ktmrfs 08/31/19 09:09am Tech Issues
RE: Tilting Solar Panel

Hi ajriding, Thanks for taking the time to experiment and share it with us. Solar panels are a 'constant voltage' device. You may loose 25 to 30% by not tilting. But NO WAY am I climbing the roof in a storm to stow the panels. I'd consider a remote controlled tilting mechanism--but it is cheaper just to add another panel. I trust folk's opinions when they have actually done an experiment, rather than guessing. solar panels are not a perfect constant voltage device, but close enough for most first order calculations.
ktmrfs 08/30/19 09:36pm Tech Issues
RE: Tilting Solar Panel

It would be interesting to see the amps change as the panel is tilted been there, done that, what I found pretty much matches the math. the drop in power is related to the cosine of the angle error in the vertical and horizontal plane. as an example if the error is 45 degrees, power drops to 70% of max. a 60 degree error drops power by 50%. depending on your latitude and time of year and time of day the error can be insignficant or noticeable. And measuring voltage or current alone is NOT a good way to determine the loss. you need to measure both voltage AND current. to get "perfect" alignment, place a tube, like an empty tp tube perpendicular on the panel and adjust for no shadow. easy to do on portable panels. almost impossible to do on roof panels since most only allow tilt in one axis. and unless you have a tracking system, perfect alignment only lasts a short time. On my portable panels I just set them for best alignment around noon and live with what I get.
ktmrfs 08/30/19 09:34pm Technology Corner
RE: wilson electronics 4G-X RV cellular signal booster

what I have found is that in areas with poor signal that often means you only have one base station you can connect with. Now, if the area has limited users, once connected with a good booster you will likely get decent data rates for web, but often not for streaming. The bad situation we experienced this week was a location with one distant base station, close enough to give marginal voice and a campground with 300+ sites......... unboosted signal level for verizon or ATT was around -125db. marginal for voice, not much use for any web access. So...... even with the booster and signal levels near -70db (very good) voice was now great, texting was great, messages with pictures fine, web access, well in the morning and near lunch or dinner very very very slow. Often slow enough for browser to time out. base station was overloaded. in between times web access was marginally adequate for most uses. No way to stream video. The base station also served a significant portion of the local town. Turns out both Verizon and ATT had similar poor reception and with our verizon phones and web was virtually the same as friends with ATT phones when they used our trailer for phone/text/web hot spots. My overall experience with the wilson RV unit, which I've used for several years, is that it very often will get you voice and adequate web access in remote location. But don't expect it to get you the ability to stream anything.
ktmrfs 08/27/19 10:43pm Tech Issues
RE: inverter power cables cca or ofc

Spend a bit more and get a class T fuse and holder. Look at the short circuit current of your battery bank and the interrupt capability of the fuse. x2. and mount it as close to the battery as possible.
ktmrfs 08/21/19 09:11am Tech Issues
RE: Will GFCI work with items without equipment ground

Will it work: Perfectly Does the GFCI care. On some of 'em the safety ground is not even connected. the ground lug better be connected on a GFCI outlet or it is a code violation. And GFCI outlets sold today detect ground/neutral bonding so they must have a connection to the downstream ground.
ktmrfs 08/21/19 09:09am Tech Issues
RE: Will GFCI work with items without equipment ground

All this brings up another related topic. I know I'm wavering. My RV is in a storage lot where a, low potential, outlet is supplied for each camper. An AC unit or electric water heater will immediately trip the main. We, pretty much, only plug up to keep batteries charged. Nobody loads anything of consequence on the inverter or 12 volt system. Every motorhome owner I talk with seems to have a persistent problem with the GFCI's tripping. The only thing we all have in common is that we all have an inverter. Mine is a 1500 watt Xantrex PSW. Is there something inherent with motorhomes that could cause this? I know the 15 amp connections an campgrounds are GFCI, but I doubt they are used by motorhomes. if the trailer/motorhome has an outside outlet (which virtually all do) in wet weather moisture can build up in that outlet and cause enough leakage current to trip an upstream GFCI outlet. be it the breaker with GFCI or the trailer GFCI.
ktmrfs 08/21/19 09:06am Tech Issues
RE: Two honda generators in tandem

First of all 2200 + 2000 = 4200 (not 4400). Secondly at that altitude you are losing a lot of power; however, the AC should still run. Also, is that running watts or starting watts? Running watts could be way less and make a difference depending on other loads sucking power away at the same time as you trying to start the AC. Make sure everything else is turned off before you start the AC. Lastly, the start capacitor in the AC could be going bad. 4200 isn't running wattage, it is only peak wattage. I believe the 2000 is 1800 running and 2200 is 2000, so you're down to 3800, and at a mile high, it could be significantly lower. You might need to look into changing jets out in the carb, I seem to recall my BIL had to swap jets when his Honda wouldn't even start/run at high(er) elevation. a single 2200 is capable of starting and running a dometic or coleman 13.5K AC unit at 7000ft if an easy start is installed. That is with the factory low altitude jet. my brother and I have both done this many times this last summer and this summer with the honda 2200. the honda 2000 will start the AC but only consistently run it at altitudes less than about 4500 ft.
ktmrfs 08/20/19 11:20pm Travel Trailers
RE: Will GFCI work with items without equipment ground

while a GFCI is designed to protect you in the case of getting across hot and neutral it is NOT guaranteed to protect you. If you are well insulated from any ground path (in the house with rubber soled insulated shoes) and get across the hot and neutral ALL the current flows through you via the hot and neutral and none through any ground path. hence no GFCI trip. Of course this is not the typical fault case but it can exist. As an example try using a outlet tester with a GFCI test button in a typical trailer hooked to a typical generator with unbonded ground and neutral. in most cases it will NOT trip any GFCI outlets. The reason is that the neutral and ground in the trailer are not bonded, nor are they bonded at the generator, and the trailer sits on rubber tires generator sits outside with plastic high insulation resistance between the neutral or ground and earth grounde hence limited or no ground path. same as if you got across hot and neutral in the trailer. A outlet based GFCI provide NO overcurrent protection just current imbalance protection. It relies on an upstream CB for overecurrent protection, a Circuit breaker GFCI will provide overcurrent protection and current imbalance protection. Now a GFCI will also detect and trip on one other fault. A downstream ground/neutral bond. By code ground and neutral are not to be connected together anywhere but the main breaker panel. so if ground and neutral are bonded downstream of the GFCI it will detect this short and will trip. This will occur even if there is no current flowing in the circuit.
ktmrfs 08/20/19 11:06pm Tech Issues
RE: inverter power cables cca or ofc

What type of power cables can be used for battery connections to 1500 watt inverter? CCA or OFC I use welding cable. I attach my own ends with a hydraulic crimper but most welding stores will attach lugs for you. Welding cable is much easier to run, nice thick insulation very fine stranded wire so it is easy to route. you can get colors but I just get black and then attach red shrink wrap on the ends. Compare 4/0 welding cable to std variety 4/0 battery cable. you'll immediately see the advantage to welding cable. For my 1000W inverter I use 4/0 welding cable.
ktmrfs 08/19/19 10:29pm Tech Issues
RE: Recommend me a Vacume Food Bagger

we've used a food saver for probably 15 years and still going strong. great way to buy in bulk and freeze, or prep stuff for a camping trip.
ktmrfs 08/18/19 09:43am Beginning RVing
RE: Two honda generators in tandem

Yea my first generator - the 2000 watt honda i bought a year ago falls in the serial number series. Something seems wrong although - the 16 to 25 percent loss from altitude is significant. I was also thinking the cord from one to the other generator could be faulty? The cord from my trailer to generator is fine or at least very unlikely the problem. Both generators the eu2000i and 2200i companion are both new with less then 10 hours on them. The trailer is new and the ac seems to work fine. The generators bog down and then hits overload after about 3 to 5 mins after i turn on ac. It may be the generator that the trailer is plugged in to (the companion) that is the only one overloading. I was just thinking about this and will have to watch to see if one or both overload. something is definetly amiss since it overloads after 15 minutes or so. what I do know is that a single honda 2200 will RUN an dometic 13.5K or coleman MachIII all day long at 7,000ft altitude without overloading. Brother and I have done so. The trick is getting it started, which is easy with the micro air easy start. The easy start reduces starting current, but once started doesn't affect the normal current draw. So 2 honda's shouldn't be any issue. Either there is 1) an issue with the generator(s) 2) they really aren't paralleled, but again one should be able to keep it running 3) you have additional draw. Now, if your converter is still on, which it WILL be unless you turn OFF the breaker it is on, AND your batteries are drawn down AND you have a good charger (not a WFCO), then you could easily be overloading the generator. A reasonably discharged battery bank and a good 60A or so converter will draw as much or more current than the AC, 12A or so. Then the combo could cause the generators to go into overload after 15 minutes or so.
ktmrfs 08/16/19 11:37am Travel Trailers
RE: I drove a 2020 Silverado D/A 3500HD today

I was just able to check the payload on a 2500HD LTZ Crew with standard box and it was 3032 lbs. I will hopefully find a 3500HD SRW and DRW to check. Based on info I've seen, For 2020 GM classifies the 2500HD as a class 3, same as the 3500 so they are no longer restricted to a GVWR of 10,000 on the 2500's. So, for a 2500 GVWR is limited by the tires, axles and springs, which pretty much put it the same as the previous 3500SRW at around 11,500 in diesel configuration. And I suspect there is an option for a 10,000GVWR for applications that want to stay at 10,000 or under. I suspect if you look at a 3500SRW the GVWR and payload will be the same or within a few hundred pounds. Somewhat may depend on what tires are on the 2500.
ktmrfs 08/16/19 11:25am Tow Vehicles
RE: Two honda generators in tandem

4200 is surge value run is 1600 and maybe 1760 with eco switch off 2200 is 1800W continous 2000 is 1600 continous. Issue isn't the running current it's the darn 50+ A locked rotor draw. So a 2200 in parallel with a 2000 is 3400W continous,more than enough to keep the AC and other stuff running. It's GETTING it running that's the tough one.
ktmrfs 08/14/19 05:37pm Travel Trailers
RE: I drove a 2020 Silverado D/A 3500HD today

In short.... I LIKE. They look really good in person. I do wish the High Country had the LTZ chrome bumper. The 10 speed tranny is seamless, and the Dmax power is there as usual. Lots of G whiz features. I love the HUD display. It is gonna be a definate upgrade over my 2011. I had her build a High Country 3500 DRW 4X4 CC DA. Out the door right at 80K. Gonna shop around and see if I can do better. But I see myself placing an order soon. don't know about the 2020, but my 2015.5 Denali also had the painted front and rear bumpers. Yes, they look nice, but pick up rock chips and scratches that a Chrome bumper won't. I also wish it had the chrome bumpers. I think at the time the High country also had the painted bumper.
ktmrfs 08/14/19 05:32pm Tow Vehicles
RE: Real towing advise please

So we had the trailer loaded the same way for both the tacoma and the tundra. And there was considerable difference in sway..Could I have too much weight loaded forward and that cause sway? the "sway" may not have been the trailer wagging, but improper WD hitch setup. To little weight transfer to the front of the TV, front of TV rises, camber is affected and the front of the TV wanders all over the place. I've had two friends who with smaller TV complained about sway and when we went over the setup, what I described was exactly the problem. Very little weight transfer, fair amount of tongue weight way to much front end rise resulting it to light a front end and lots of camber on the front. Once adjusted properly with minimal front end rise, they were flat out amazed and the difference. Very very stable setup.
ktmrfs 08/14/19 12:51pm Travel Trailers
RE: Sam's Duracell 6v Battery Dimensions

given that the VAST majority of 6V GC2 batteries go into golf carts, I'd suspect that anyone trying to sell 6V GC2's is going double and triple check that the battery dimensions insure fitting into whatever is expected for use in a Golf cart. Otherwise probably 99% of their market is gone! And likewise for any suppliers of the GC2 raw cases to anyone putting together GC2 batteries.
ktmrfs 08/14/19 12:45pm Tech Issues
RE: Two honda generators in tandem

Do the generators have their "ECO" mode turned OFF? We ran a 13.5 A/C for a weekend using an EU2000 without any problems, but the ECO mode had to be off... which meant it was not quiet. Yes, we were at sea level, but with the amount of power you are using you should be able to run A/C. before I installed the micro air easy start, my paralled honda's had to be off the eco mode even when in parallel to start the AC if we were much above sea level or it was quite hot. One generator if lucky would start the AC at sea level if not in eco mode. once started I could go back to eco mode, but then if the AC shut off I had to remember to go back off eco before the AC decided to come back on again. This was even at sea level, worse at 5,000ft or so. with the micro air, one honda 2000 in eco mode easily starts the AC even at 6000ft or so, but will soon overload. the honda 2200 is fine for long term starting and running the AC at 7000 ft in eco mode.
ktmrfs 08/14/19 11:18am Travel Trailers
RE: RV toilet paper

Been using Costco Kirkland brand for years. It passed the 30 second in jar test and breaks down easily. yup, same stuff as in the house. IIRC several years back costco monthly mag had a writeup on their TP showing it was as good or better than several brands of RV TP. I use a macerator pump to dump at home with a short clear pipte to the macerator pump. what little TP I see coming down the pipe is pieces no bigger in diameter than a penny or so.
ktmrfs 08/14/19 11:13am Beginning RVing
RE: Cabin filte

I had an 01 GMC 2500HD. Bought it off my father. He owned it 8 yrs or so and I'd had it a couple of years. Did the same thing. Changed the cabin filter in the car and started looking into adding one to the truck. Turns out the 01's came with one. I didn't know and my father didn't know. After 11 or so yrs that thing was black. Changed it and all of the sudden my fan blew way more air :) They dropped it in 02 or 03. yes, they dropped it then brought it back. Our 2015 has one, both my mercedes have two. a regular paper filter and a charcoal filter canister. normally air only goes the paper filter, but in areas with air, like going near a skunk, feedlots etc. you can select the charcoal filter. does an amazing job of taking out the smell!
ktmrfs 08/14/19 11:06am Tow Vehicles
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