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 > Your search for posts made by 'pianotuna' found 1360 matches.

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RE: 2019–20 CORONAVIRUS PANDEMIC POSTINGS

Remember, you're supposed to believe science. If you disagree with any article I posted please feel free you write to the author and tell him or her you don't agree with them. Tell them your qualifications and why you don't agree with them. They will more than likely tell you why you are wrong and have the qualifications and knowledge to tell you why. Here is the science: "Our study indicates that wearing a face mask can be effectively combined with social distancing to flatten the epidemic curve. Wearing a mask presents a rational way to implement as an NPI to combat COVID-19" https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0237691 Please wear a mask.
pianotuna 09/25/20 12:21pm Around the Campfire
RE: 2-way refrigerator operation without a battery

Solar is the easy way to keep a battery charged. He's on shore power, which is even easier. Shore power is more expensive if you are camping.
pianotuna 09/25/20 12:02pm Tech Issues
RE: Dry Camping - Heat with Propane, or electrically w/Inverter?

I will not use an unvented combustion heater. There are plenty made that do vent.
pianotuna 09/25/20 11:18am Tech Issues
RE: 2019–20 CORONAVIRUS PANDEMIC POSTINGS

Mutations. https://www.boston.com/news/coronavirus/2020/09/24/massive-genetic-study-shows-coronavirus-mutating-and-potentially-evolving-amid-rapid-u-s-spread?s_campaign=Email:BComToday&SUBID=56a1f18a1b&AUDID=24170041
pianotuna 09/25/20 08:23am Around the Campfire
RE: Dry Camping - Heat with Propane, or electrically w/Inverter?

Now THAT'S a lesson I'll not soon forget! Thank you all I do use a heating pad or electric mattress pad when dry camping. If you have 6 to 8 hundred watts of panels then an absorption fridge may be run during the daylight hours. 24 hour consumption is about 5.7 KWH.
pianotuna 09/25/20 08:13am Tech Issues
RE: 2019–20 CORONAVIRUS PANDEMIC POSTINGS

Hi BCSnob, I think this may be why it is still paused in USA. "“No final diagnosis” AstraZeneca responded with a statement saying: “There is no final diagnosis and there will not be one until more tests are carried out.” However, NIH director Francis S. Collins, MD, PhD, seemed to give credence to the Times’ report when he told a Senate committee last week that the reason for the trial pause was a “spinal cord problem.”" https://www.genengnews.com/news/astrazeneca-u-of-oxford-resume-phase-iii-trial-pfizer-biontech-eye-14000-more-participants/
pianotuna 09/23/20 05:30pm Around the Campfire
RE: Solar charging - can it be so?

I would rather have 15 volts with a lot of amps, than 20 volts with a weak amp supply. Most nominally 12 volt panels put out 17 volts. My panels are lower than most at 16.5 volts. The seller recommended doing series with an MPPT controller. I did follow that excellent advice. Solar panels are considered to be constant voltage device. Higher voltage leads to less line loss (l% is great). https://www.pveducation.org/sites/default/files/PVCDROM/Solar-Cell-Operation/Images/IV-VOC.gif width=375
pianotuna 09/22/20 04:40pm Tech Issues
RE: Solar charging - can it be so?

I'm still trying to wrap my head around the solar and power issue, but I have learned a lot. In conversation with my RV service tech, an independent guy who takes pride in his knowledge and work, I was listening to him discuss the wiring issue, in conjunction with a new Victron controller (100/50) and Victron 712 Voltmeter he'll be installing this week. There are occasional reports of voltage happening from moonlight. My system from 1992 (30 watts of amorphous solar for $1700!) would show voltage if I parked under a street light. My current system does not show voltage when I park under a street lamp. I believe series installations may start charging sooner in the day. But I have no proof of this, just anecdotal incidents. Excellent equipment choice on your part. Get the voltage up as high as you can. Then wire the panels in series/parallel. I would have chosen SiO2 instead of Li.
pianotuna 09/22/20 09:51am Tech Issues
RE: Battery question

Some how the converter is not charging the battery bank. Check the voltage output at the converter.
pianotuna 09/22/20 09:29am Fifth-Wheels
RE: Lithium Batteries

I think the issue is over voltage to the LI battery bank, not protection of the alternator.
pianotuna 09/22/20 08:55am Tech Issues
RE: Electronic Driving Systems

Rick Jay, I only disagree on the safety. There are many pictures of motor homes after a crash. They are NOT pretty. Are Motorhomes tested at all in the way other vehicles are?
pianotuna 09/22/20 08:49am Class A Motorhomes
RE: 2019–20 CORONAVIRUS PANDEMIC POSTINGS

I think this is what you’re looking for...., A mechanistic model and therapeutic interventions for COVID-19 involving a RAS-mediated bradykinin storm DOI: 10.7554/eLife.59177 Hi BCSnob, Yes. Thank you.
pianotuna 09/21/20 05:36pm Around the Campfire
RE: 2019–20 CORONAVIRUS PANDEMIC POSTINGS

Mex, The cytokine storm is not the storm that covid 19 causes. However the treatment, with low cost steroids is the same. I wish I had noted the name of the other storm--which has similar symptoms and bad effects. "Indeed, based on actual evidence showing hyperinflammation as well as T cell deficiencies and coagulation abnormalities, associated with life-threatening organ dysfunction, severe COVID-19 may be well consistent with a clinical diagnosis of viral sepsis, rather than with a mere hyper-inflammatory disease. This conceptual framing may help to improve clinical management of severe COVID-19 patients, by providing a rationale for the development of novel balanced immunomodulatory approaches, combining both suppressive and activating immunotherapies." https://ccforum.biomedcentral.com/articles/10.1186/s13054-020-03267-w
pianotuna 09/21/20 01:05pm Around the Campfire
RE: Electronic Driving Systems

The more complex the system the greater the likelihood of failure. I would stay away from such items.
pianotuna 09/21/20 11:11am Class A Motorhomes
RE: 2019–20 CORONAVIRUS PANDEMIC POSTINGS

BCSnob, How I wish there were some good news. I was disappointed by the plasma results. hydroxychloroquine or chloroquine was no surprize at all. My business makes me a possible disease vector. Many of my clients are declining to risk my visits to their homes and I am taking all precautions to avoid spreading covid 19. In particular I'm not going to do rural business, where I would be going from home to home to home.
pianotuna 09/21/20 09:21am Around the Campfire
RE: Battle Born Lithium

Itinerant1 has a magnificent system, one that any rv'er would be proud to own and use. All the "electrics" are from one company which ensures that they will "play well together". For personal reasons, I would have gone Victron, or Outback instead of Magnum. For technical reasons I would have moved to 48 volts for the battery storage. There are 48 volt DC air conditioners.
pianotuna 09/21/20 09:12am Tech Issues
RE: converter for lithium

Consider an inverter/charger?
pianotuna 09/20/20 11:39pm Tech Issues
RE: generator question

May I ask what you are attempting to run?
pianotuna 09/20/20 11:40am Tech Issues
RE: Battle Born Lithium

BFL13, A flooded 100 amp-hour battery does "best" at about 30 amps demand. It can do far more than that number. Look at the huge draw from a starter motor. The SiO2 can do 9C for one second. I truly doubt a 300 amp-hour LI is going to only allow 100 amps continuous. Itinerant1 all other things being equal, the more cells the greater the continuous current capability. The trade off is the greater the number of cells the lower the mean time before failure. i.e. increased risk of failure over a given period of time.
pianotuna 09/20/20 11:10am Tech Issues
RE: Battle Born Lithium

I was under the impression that 1C was a "rule of thumb" with LI for current (amps). So a 300 amp-hour LI should laugh at a load of 130 amps continuous. iirc the Battle Born can do 3C for five minutes.
pianotuna 09/20/20 09:03am Tech Issues
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