the holy grail--power?

Discussion in 'Motorhome Chat' started by CHRI$, Sep 3, 2011.

  1. CHRI$

    CHRI$ Funster

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    Right then i fancy a debate,if lots of peeps join in we can have a mass debate:Rofl1::Rofl1:
    power(electric) is what we all strive to get as cheaply as poss,to run our motorhomes when off grid:thumb:
    right so? what is the best set up to have in this country(jj) to power our motorhomes?is it
    solar=£2.40 a watt for a good panal and charge controler:thumb:relies on the sun.but is silent:thumb:not reliable 24/7 365:Eeek:needs a huge expensive heavy battery bank(4 min) to store power for the days it aint sunny,power use needs to be frugal just in case:Doh:
    genny=£0.30p a watt to buy:thumb:relies on fuel(running cost) ,is noisy,heavy, but reliable 24/7 365 does not rely on big banks of heavy batteries:thumb:power use not important:thumb:
    12v genny=£0.0000003 a watt:thumb:relies on min of fuel(running cost)noisy but light, runs 1 hour a day,dont need big battery bank:thumb:(2 max)power use is important but not frugal:thumb: had to include this one:Rofl1:
    wind =no data:Rofl1:
    i stand in the 12v genny corner:thumb::Rofl1::Rofl1:
    where do you stand?:Smile:
     
    Last edited: Sep 3, 2011
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  2. Snowbird

    Snowbird Funster Life Member

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    I stand in the corner of maximising all you can,ie, solar panels,wind generator,battery to battery charger, and if all else fails then go for a drive to where there is sun.
    Who the hell would want to sit 24/7/365 in a dark room:BigGrin:
     
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  3. JJ

    JJ Funster

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    There is little doubt that you have come up with a brilliant product young Chris :thumb: and I am in the queue when it is put on the market but could I humbly suggest you look to your use of statistics in the marketing techniques...:Rofl1:

    Not sure where you got your £2.40 per watt from for solar... I am, however, sure you will enlighten me soon...:Wink:

    First you need a product name... "The Power Puncher"... "The Battery Banker"... "The Amp Hammer"... "Green's Green Gadget Power Giver"...

    Got to go... out to lunch today...

    JJ :Cool:
     
  4. Wildman

    Wildman Read Only Funster

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    1.71 per Watt
    http://www.ebay.co.uk/itm/80-Watt-S...70535589351?pt=UK_Gadgets&hash=item5645a465e7

    I currently have 2 x 80W panels and 4 x 110 amp/hr batteries.
    one panel flat on the roof connected to one pair of batts that are also charged from the engine when driving. The second panel is the only charge for the second pair of batteries that are used for TV, phone/laptop charging. This panel is almost verticle in the front window when parked and catches the low angle sun is the winter/spring/Autumn. Always enough charge from the vertical panel to keep the batteries fully charged by 10am. Most days in the winter the roof mounted panel struggles to keep the bank charged if not driving anywhere so will be adding a second panel making 240W in total both banks an be joined if required by a switch, but never have been. Only seen batteries below 12v on the odd occasion and never had the load cut off by the regulator because of low battery. Now we tour and are only rarely in one place for more than two days, never used a site as a rule and never had a hookup other than shepton to run the tent lights.
    We manage and it suits us. Have occasionally thought about a wind genny and will eventually make one, no longer carry genny never used it so sat in the shed.
     
  5. CHRI$

    CHRI$ Funster

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    sorry roger,just edit my post to include charge controller:thumb:
    as you need both and a good 100watt panal and a good charge controller will cost £240:thumb: and my genny priceing was done on a honda not a cheap kipor:Rofl1:

    http://www.ebay.co.uk/itm/100Watt-M...80704703770?pt=UK_Gadgets&hash=item415b4ddd1a
     
  6. Wildman

    Wildman Read Only Funster

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    cost per W is not dependant on panel size a decent 20amp regulator is around £40, no good massaging the figues to make your 12v look good Chris I posted what works for me, I don't carry a genny or petrol. AND I included postage in my pricing only one controller needed for 3 panels so add .16666 to the costing and its still dirt cheap. So my total instalation costs are£1.87666666p per Watt. with no ongoing costs of fuel. the panels are lightweight and the three of them weigh less than a genny 12v or otherwise. Require no maintainance other than an occasional wipe over.
    a genny is heavy, noisy, smelly anticsocial and would probably invalidate your insurance if you told them you carried petrol in a can in a locker.
     
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  7. GJH

    GJH Funster Life Member

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    Another Nutter??? Some of us are permanently out to lunch :Rofl1::Rofl1:

    Back on thread. As with so many things it depends on circumstances.

    In our van we haven't the space to carry a heavy generator or to carry fuel safely. Our usage between March and September/October is such that we are around the van often enough to orient our free standing 50W panel towards the sun for efficiency. In the other months we happily use EHU. Couple that with conversion to LED lighting and we don't need a big battery bank (1 x 85AH replaced by 1 x 110AH) and we are able to replace the power we consume easily.

    I've been impressed with Ray's Forgen VAWT but it's expensive and mounting it on our van might be a problem so I'm watching Dave's experience with the Maplin model with interest as, if successful, we may find it useful during the winter months.
     
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  8. CHRI$

    CHRI$ Funster

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    invalidate my insurance:Rofl1::Rofl1::Rofl1::Rofl1::Rofl1::Rofl1:
    the most explosive things carryed on a motorhome is the batteries and gas bottles,and four 110 batteries weigh how much??:Doh:my genny weigh's 13.7 kg:thumb:
    anti social il grant you:thumb:
     
  9. Snowbird

    Snowbird Funster Life Member

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    Never real gave much thought to the"Probably would invalidate your insurance" regarding the carriage of petrol in your locker. Good point Roger.:Eeek:
     
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  10. Wildman

    Wildman Read Only Funster

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    if you are saying stick to one battery and charge it every day then you will soon run out of power and also need to find a petrol station or carry 5 gallons of fuel. The whole point of power is to have it when you need it not used a genny since I fitted the solar panels. don't have to think about it or lift a genny in and out of lockers hoping no one runs off with it. Each to their own but I like an easy life, no lifting no noise, no fumes no daily expence. tour rather than site sit and you won't need to recharge at all. Rising fuel prises do not affect the sun either.
     
  11. Wildman

    Wildman Read Only Funster

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    anyone fancy asking their insurance company?????
     
  12. CHRI$

    CHRI$ Funster

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    roger this is not an argument,its a debate:thumb:
    the weather affects the sun,and as you say you travel around alot,in doing so you are useing your genny up the front,the one thats connected to your engine,and that one will produce alot more power that any solar panal or panal's,as you say each to there own:thumb:
     
  13. CHRI$

    CHRI$ Funster

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    i will:thumb:
     
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  14. Wildman

    Wildman Read Only Funster

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    hey I am not aguing Chris, merely answering the points you raise so debating. One more point to clear up the pair of betteries I use for the TV (7-10 hours a day) are not charged by anything but the solar panel. If my debating bothers you I'll stop. I don't do arguments so you can have the last word no problem mind you if someone else raises a point I may well answer
     
  15. Douglas

    Douglas Read Only Funster

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    Your cost for solar power is miles out, a solar panel can last 20 or 30 years, yes there is some loss about 15% over 10 years but after that its pretty constant. Plus there are no running or maintenance costs

    Doug...
     
  16. CHRI$

    CHRI$ Funster

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    roger you crack on buddy i like your input:thumb:
    getting back to insurance,yes i am insured to carry 5lt of petrol in a sealed plastic can,but i am also insured to carry a motorbike on the back, as my insurance company are fully aware that i do this,as both motorhome and the bike are covered by the same insurance company:thumb:
    5lt of petrol, wilding would last me 7/8 days:thumb:
    judgeing by my useage at malvern:thumb:drying wifes hair(through a 2000w inverter) and somebody else's that will remain nameless,and also charging an r/v batteries for an hour,my little genny run for about 4 hours in total:thumb:,should have been 2 1/2 but i forgot it was running when eating bacon butties on sunday morning:Blush:
     
  17. Snowbird

    Snowbird Funster Life Member

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    There is another equation to all this.
    We wont deny that a good solar,wind and battery system is expensive,including all the other bits that are attached to it ie,controller and heavy duty wire.
    But once its fitted that's it,you don't have to maintain it apart from the occasional battery top up. You don't have to buy fuel and oil for it ever. It will save you perhaps in the region of £250 every 2 years on replacing deep discharged batteries (have you checked the price of batteries lately).
    A decent sized genny is not a cheap item to buy,but has massive running costs over a 10 year period,fuel,oil,servicing,whereas the alternative power supply has virtually no running costs.
    When you come to sell your van the solar system will add value to it,whereas what do you give the purchaser of your genny powered van (a pile of receipts for the fuel its cost in your genny).
     
  18. CHRI$

    CHRI$ Funster

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    but i have put in my first post no running cost?:thumb:
    the cost is worked out on buying it:thumb:
    as is my genny costing+running cost:thumb:
    so how far am i out?????????
     
  19. CHRI$

    CHRI$ Funster

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    i have read through this thread again and get the impression that people think im anti solar,im not:thumb:
    i would put solar on my motorhome in a heart beat,if i could rely on it to give me anough power when i need it,that it will never be able to do and i aint going to carry something around with me that aint working,because it's overcast.
    most(not all) people carry both why!??because they carry a genny just incase:Rofl1:
    and ehu was mentioned?, this thread aint about ehu:Doh:
     
  20. Munchie

    Munchie Funster Life Member

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    Solar for us (we have a gennybut never used it since we went solar).
    You do not need a min 4 batts. We have two 110amp batts and two 80w panels.
    Last year we went from third week April till start October on non hook up sites and we are doing the same this year (UK)
    We have never ran out of power, we use 12v tele and digibox or sat box, two laptops used every day and all the usual power for a motorhome.
    For me avoid inverters like the plague, everything we have is 12v. We do use a 150w inverter for charging our toothbrush (once a week) and my camera battery (also once a week)
    We have small DC inverters for the laptops.
    I would not use a big one for tv etc as this is a large batt drain hence we set van up to be 12v wherever possible. :thumb:

    BTW the only time we get nothing from the solar in daylight is when it is Pi**ing down. Even a heavily overcast day we still get 1.5/2 amps.
     
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