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 > Your search for posts made by 'pianotuna' found 3334 matches.

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RE: The big voltage rip off in my SUV

Hi jrnymn, You forgot the thermostat on the Platinum Cat--so if it is too warm, you can turn it down. Where I live it would not be nearly enough in mid winter.
pianotuna 11/21/14 02:05pm Tech Issues
RE: The big voltage rip off in my SUV

Hi jrnymn, I'd encourage you to consider the platinum cat instead. Yes, it is double the price. And safer, and has a thermostat, and has a chimney. Niner, Get an external regulator for the house bank. X3 on the solar while driving. Heck, mine even sends some amps to the chassis.
pianotuna 11/21/14 01:25pm Tech Issues
RE: How to measure how much solar we need?

Hi, Solar is also for maintenance charging in storage. I get about 17 amp-hours on December 21. That's more than enough to keep the battery bank happy. If I quintuple my system, I'd get enough to run the furnace on a 25% duty cycle, year round. I'd also have enough to run the fridge for over half the year and in the hot summer months I might just be able to run the air conditioner (but not much else).
pianotuna 11/21/14 01:19pm Tech Issues
RE: Lance 1181 solar install?

Hi, Figure out the voltage drop from 17 down to 14.4 volts.
pianotuna 11/21/14 01:13pm Truck Campers
RE: PWM controller question

Hi jrnymn, The alternator "looks" at the starter battery. The solar "looks" at the house battery. Once the starter battery is full, the alternator will reduce voltage and amps of charging. At that point my solar tends to send a few amps to the chassis. There are ways around having this happen. One is an extra alternator that is dedicated to the house bank. Another is an external regulator (diode) that is hooked up to the house bank. This can be placed away from the heat of the engine. Hmmm, I never thought about solar charging while driving. I guess I was thinking in terms of using the alternator... another future project.
pianotuna 11/21/14 01:07pm Tech Issues
RE: How to measure how much solar we need?

Hi, I love solar and have been using it for 15 years. Before I moved to full time I managed to go for about 5 years with no generator. I'm considering quintupling the watts I have. That should nearly eliminate all generator use, including running the fridge in the summer time. Maybe my question should of been, how much solar do you have and do you like it? Thanks
pianotuna 11/21/14 12:48pm Tech Issues
RE: Lance 1181 solar install?

Hi, The voltage at the battery pretty much determines what the panel voltage is with PWM controllers. Since the commonly used lowest voltage panels are 17 volts, voltage drop from wire is not much of a concern, so long as the wire is rated for the number of amps that can be produced. If you go for MPPT, then wire size is important.
pianotuna 11/21/14 09:58am Truck Campers
RE: PWM controller question

Hi jrnymn, In theory, yes, if the voltage is identical, in practise, probably not. Variations in resistance to the battery would skew the results. I know that BFL13 connects his chargers in a specific order to get them all contributing, so it also may be that is a requirement, too. It is neat to see the solar panels sending energy (amps) to the chassis while driving down the road in the summer time.
pianotuna 11/21/14 09:44am Tech Issues
RE: Elec heaters

Hi, Take a reading with an infrared thermometer. Do make sure the tines on the plug are bright and shiny.
pianotuna 11/21/14 09:31am Fifth-Wheels
RE: Seat heater-->Tank heater

Hi, I am using 120 volt heating pads from Walmart. My tanks are enclosed and I do have a good sized inverter. The small pads produce the same number of watts as the larger ones (50). Walmart brand name is "Equate" in Canada. It does not do the auto shut off that so many other brands do. Heat loss from the tanks is the issue. Enclosing them helps immensely. I know that I can keep my waste tanks above freezing with 200 watts of heat when it is -26 C (-15 f). Unfortunately where I live -40 is quite possible.
pianotuna 11/21/14 08:25am Do It Yourself Modifications and Upgrades (DIY)
RE: Testing the new to me NON MPPT 20 amp Charge controller

Hi, Mariners have deep pockets. I don't. Cost per watt delivered to the battery works. Mppt works when the roof real estate has all been used up. I'd love to tilt--but only using a remote control. So far the cost of doing so is astronomical compared to panel pricing. Mariners have it figured out.
pianotuna 11/21/14 08:13am Tech Issues
RE: PWM controller question

Hi jrnymn, The Magnum has temperature compensated charging--so the voltage is higher. I guess it is high enough to prevent the other sources from contributing. If I trigger equalization from the solar panels I get a small contribution. One good thing about the Magnum is an ability to do 125 amps of charging from a 120 volt 15 amp supply.
pianotuna 11/21/14 08:01am Tech Issues
RE: New to winter--cabover leaked!

Hi, With high winds, abrasion from the cover can do lots of damage to the finish. I would only use dicor for sealing purposes. Do the Eternabond as soon as temperatures will allow.
pianotuna 11/21/14 06:30am Class C Motorhomes
RE: Seat heater-->Tank heater

Hi EMD360, While I admire your creativity, did you think to check out the wattage on the "real" tank heaters? I believe it is around the 284 watt mark.
pianotuna 11/21/14 05:43am Do It Yourself Modifications and Upgrades (DIY)
RE: How you heatin?

Hi, The heat tape only does about 168 watts for 24 feet. Either that, or it draws a heck of a lot more than 7 watts per foot. I suggest you invest in one of these: http://ecx.images-amazon.com/images/I/41I8LHj5wJL._AA160_.jpg width=450 Kill-a-Watt
pianotuna 11/20/14 07:43pm Full-time RVing
RE: TC Battery Charging Solar, Shore Power, Vehicle?

Hi, A lower cost way than the "bird" to keep the chassis battery in pretty good shape is a Trik-L-Start, or an Amp-L-Start.
pianotuna 11/20/14 07:38pm Truck Campers
RE: How you heatin?

Hi, What is a 24 foot heat strip? How many watts is it drawing? There is and outside extension cord ran from a 20 amp outlet, that is plugged into my 24 foot heat strip.
pianotuna 11/20/14 04:49pm Full-time RVing
RE: PWM controller question

Hi jrnymn, Solar plays well with other charging methods. 1. solar plus alternator--alternator overrides the voltage on the solar, but both contribute amps. 2. solar plus PD 40 amp converter--solar controls the voltage, but both contribute amps. 3. solar plus PD 40 plus alternator--all three contribute. 4. solar plus Magnum inverter/charger--(early days yet) Magnum contributes 100% of the charging, unless I trigger the solar into equalization mode. When I do, I get some small amount of charging from the solar. 5. solar plus Magnum plus alternator. The Magnum does all the charging. If one had only a small window of opportunity to 'git-er-done', and so was in need of doing some 'speed charging', could the solar controller and a charger be used in parallel, just like what BFL does with a bunch of chargers? I'm guessing no, as the solar controller would probably not be 'constant current protected'.
pianotuna 11/20/14 11:04am Tech Issues
RE: Are you kidding?

Hi Paul, I do truly feel sorry for them. However, at least folks in RV's will have some limited power--and heat for as long as the propane lasts. Folks in homes that have lost power will be feeling the crunch a lot by now, and with 3 more feet of snow on the way things will not be getting better soon.
pianotuna 11/20/14 09:21am General RVing Issues
RE: Rv site near duke hospital

Hi, I'd ask the hospital. They may know of such a site.
pianotuna 11/20/14 09:13am RV Parks, Campgrounds and Attractions
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