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  1. R

    Running the truck in idle? for power

    Thanks for the link. I just did some more research because I was unfamiliar with the problem. Interesting problem. I always tell my kids, there is no end of opportunity to be a problem solver...for every new idea, we create at least one new significant new problem to be dealt with! Anyway, my...
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    Running the truck in idle? for power

    Can you provide some links of the supposed intake manifold carbon issues...? if there is truly carbon in the intake manifold, something else is wrong... Regards, RestorationRides [emoji847] Sent from my REVVLPLUS C3701A using Tapatalk
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    Running the truck in idle? for power

    I see no reason for there to be any carbon buildup on the intake manifold on a direct injected motor. A direct injected motor is just that. The fuel (the carbon source) bypasses the induction system and is injected directly into the cylinder under high pressure. The only thing that goes through...
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    Running the truck in idle? for power

    Idling motors tend to run HOT not COLD. That is why over the years, you could see commercial and civil service vehicles with the hoods open that were being idled for extended periods of time. It's not necessary for the most part anymore because most modern vehicles have more robust (larger...
  5. R

    2 8v batteries in series in 12v system

    It wouldn't be slightly higher voltage upon initial battery installation either. It would be nominal 16-volts on a 12-volt system which would be a large overvoltage... Sent from my REVVLPLUS C3701A using Tapatalk
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    2 8v batteries in series in 12v system

    It was a simple question. No need to get snippy! You wrote... "As far as damage appliances, probably none. Excepting lightbulbs, lots of appliances will be ok at slightly higher voltage." I don't see your logic in why the voltage would be any higher than normal...? Sent from my REVVLPLUS...
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    2 8v batteries in series in 12v system

    Why do you think that the system voltage will be higher than normal (other than when new and fully charged and just installed in the vehicle)? If the regulator limits the voltage to 13.8 to 14.2, then it doesn't make any difference what battery is in there and accessories and appliances...
  8. R

    Need portable power for my CPAP machine

    That is a sharp-looking setup and very well executed. The only caveat I can think of is being careful of heat buildup as this setup looks like it would have a difficult time shedding heat while surrounded by foam (insulator) and within an plastic (poor thermal conductor) enclosure. This is not...
  9. R

    Need portable power for my CPAP machine

    Actually, I think most of them do a pretty good job of creating sinusoidal wave forms. Additionally, COMPUTERS and CPAP machines both use EXTERNAL regulated power supplies, so both have simular AC source requirements and limitations. What's good for one should be good for the other as far as I...
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    Need portable power for my CPAP machine

    The DME company that supplied you the CPAP machine should be able to provide a Battery Powered AC Source also. Unfortunately, because it will be considered medical equipment, it is going to be rather expensive so I hope you have medical insurance that would cover it. Another avenue would be the...
  11. R

    Using Blue Sea 187-Series Circuit Breaker/Switch instead of a battery switch

    It appears that you still have some drawing to do on this diagram...? The AC power seems to be connected to the DC power bus. Your batteries are connected together in series (24v)...is that what you intended? The (-) side of the second battery is not connected. The second battery is not part...
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    DC-DC battery charger under hood?

    The alternator IS an AC current generating device. It is simply rectified to create a DC supply. But more importantly, the point here is that you're not going to get 100% of all of the input out of any of these power generating devices. And another poster came up with close to the same...
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    DC-DC battery charger under hood?

    Okay, let's run the calculations. 570 amps at 24 volts equals 13,680 watts 1 horsepower is approximately 760 Watts. Therefore... 13,680 watts divided by 760 watts/horsepower equals approx. 18 HP. (Theoretically speaking) Note: Power factor correction is likely 80 percent so HP required is...
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    Help understanding battery Group # sizes

    I agree that the overall form factor does not necessarily dictate the greatest capacity rating. But, in my experience, I'm usually limited in the overall space that I can insert the battery or batteries into. With this in mind, I can usually find one or two or three groups that are the best fit...
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    DC-DC battery charger under hood?

    On a lark, I just went to the website and tried to find my biggest truck's application. They have a number of alternators listed up to 320 amps! Sounds great on paper but the app says it'll fit everything from a Suburban down to a little SSR. Correct me if I'm wrong, but I don't think SSR's came...
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    DC-DC battery charger under hood?

    So, I have since done some research herein and I really don't find that there's much information at the level I'm talking about. One example would be the detailed inner workings of an alternator and its respective voltage regulator. How does it generate electricity and tailor it to the...
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    Cable dimensioning

    Thank you JPaul. I stand corrected on my skin effect advice. But, I do want to reiterate that buying better wire with more and smaller stranding does have other benefits besides just laying down easier. It is more tolerant of corrosion damage, more tolerant of outer strand nicking due to...
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    Cable dimensioning

    - Not to hijack the thread but since we have people reading these threads of all experience and education, I just want to add a note about all of these reference wiring tables and standards (NEMA, ABYC, SAE, etc.).... For each wire size selection, the wire length you should be using for your...
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    Finished my dual battery and secondary electronic system

    second (run-on) paragraph analysis here... "As far as soldering lugs to prevent corrosion. Yes it will help but unless they are done in a 0% humidity inert gas environment they will corrode from trapped gas and moisture. The reason most soldered connections fail is because of conductor breaks...
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    Finished my dual battery and secondary electronic system

    Paragraph by paragraph here... "That strip job would have failed the inspectors I know. Broke or missing strand, skive mark on conductor from stripping device. Weakens all those marked strands. Each missing strand will reduce the current carrying capacity. Sometimes a bargain is not always a...
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