Author Topic: 12v Fans  (Read 14125 times)

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Offline tryagain

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12v Fans
« on: November 05, 2016, 11:57:04 AM »
Has anyone had any experience with these 12v ceiling fans, with the weather heating up I thought they might be a good way of keeping cooler in the camper, they seem cheap enough at $12.58ea but nut sure how much they would hurt when you accidentally put your hand in one. They have a diameter of 50cm and a draw of about 0.7A so I think that would probably suit a camper.


 

They do sell ones with speed controllers for about double the price (which is still cheap) and would probably be safer as you could turn it down to a suitable speed but I am guessing that they are just a variable resistor and, it would be more energy efficient (and cheaper) to build one using a little PWM controller like one of these and put it in a box like this





Offline speewa158

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Re: 12v Fans
« Reply #1 on: November 05, 2016, 12:14:29 PM »
Yous gets whats ewes pays for   . Buyer Beware                   >:D                      :cheers:
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Offline tryagain

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Re: 12v Fans
« Reply #2 on: November 05, 2016, 12:31:30 PM »
Yous gets whats ewes pays for   . Buyer Beware                   >:D                      :cheers:

Have you had experience with them?
or just writing them off because they are cheap?
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Offline BaseCamp

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Re: 12v Fans
« Reply #3 on: November 05, 2016, 03:48:41 PM »
I looked at those fans - but did not buy because I perceived the price as "too cheap"... 

Settled with 2 of these units



I have them mounted onto a short inverted T piece (opposite each other) - and this is hanging off the centre rail of the awning.

Having big blades - they work really well;  stirring up a lot of air and helping to keep the bugs at bay...   

Though they don't draw a lot of amps - (2 x 1.5amp/hr);  battery consumption is not a biggy for my set up...

http://www.ebay.com.au/itm/12V-Oscillating-FAN-10-260mm-Blade-Single-Speed-for-Car-Truck-Caravan-Boat-/181488785639?hash=item2a419318e7:g:8twAAOSwxH1T4uId



 
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Offline gronk

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Re: 12v Fans
« Reply #4 on: November 05, 2016, 04:24:21 PM »
Interesting topic....fans......not sure how the mexicans go, but in NSW, we rarely have a hot night camping....not by 10pm or later ?

I could imagine in northern queensland it might be muggy of a night.....but in those conditions, does a fan make a lot of difference ??
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Offline HKB Electronics

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Re: 12v Fans
« Reply #5 on: November 05, 2016, 05:00:33 PM »
Sure does.
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Offline gronk

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Re: 12v Fans
« Reply #6 on: November 05, 2016, 05:21:41 PM »
Sure does.

Does that mean in mexico you have hot nights ?? lol

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Offline GeoffA

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Re: 12v Fans
« Reply #7 on: November 05, 2016, 05:25:00 PM »
Does that mean in mexico you have hot nights ?? lol

..actually, sometimes we do... :-*
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Offline paceman

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Re: 12v Fans
« Reply #8 on: November 05, 2016, 05:32:19 PM »
we actually have one of the exact fans in the OP and it is great.

we just put up a spreader bar above our bed, hook it on with velcro tape and have it on all night.  works a treat and makes a huge difference in the humid weather.

it's not too loud and doesn't draw much power.  i changed the alligator clips to anderson powerpoles...

seriously considering getting another one.

Offline Bullant4x4

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Re: 12v Fans
« Reply #9 on: November 05, 2016, 05:42:31 PM »
Not so much the heat but the stillness that kills you. I brought one of these and is fantastic.

3 speeds, moves the air really well and keeps you sleeping nicely

Power Levels: LOW- 1.7AMPS, MED - 2.3 AMPS, HIGH - 3.0 AMPS 

« Last Edit: November 05, 2016, 05:44:32 PM by Bullant4x4 »

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Re: 12v Fans
« Reply #10 on: November 05, 2016, 05:51:17 PM »
Quote from: gronk
....but in those conditions, does a fan make a lot of difference ??

Helps pump the hot air around in circles.
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Offline paceman

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Re: 12v Fans
« Reply #11 on: November 05, 2016, 06:01:46 PM »
Helps pump the hot air around in circles.

Keeping the air moving beats it not moving at all.

Camp in the Queensland humidity for a while and you'd appreciate any air movement.

Offline Moggy

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Re: 12v Fans
« Reply #12 on: November 05, 2016, 06:12:59 PM »
Thats not what swmbo says 🙄
But i do like that fan
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Offline tryagain

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Re: 12v Fans
« Reply #13 on: November 05, 2016, 06:26:22 PM »
we actually have one of the exact fans in the OP and it is great.

we just put up a spreader bar above our bed, hook it on with velcro tape and have it on all night.  works a treat and makes a huge difference in the humid weather.

it's not too loud and doesn't draw much power.  i changed the alligator clips to anderson powerpoles...

seriously considering getting another one.

Thanks for that, its just what I was looking for. Generally, I really don't like pedestal fans but like ceiling fans so a lot of the other options don't really interest me. A couple of questions
Do you worry about sitting up in the middle of the night and getting yourself with it or is it small/light enough that it wouldn't do any damage?
Do you find the speed ok or would it be better if you could adjust it?
 


Offline tryagain

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Re: 12v Fans
« Reply #14 on: November 05, 2016, 06:31:52 PM »
Helps pump the hot air around in circles.

Not so much the heat but the humidity as others have said. It's the same both living and camping in QLD the breeze normally stops at night so it feels a whole lot more muggy. A fan moving the air around can make a big difference.

Offline DeBe

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Re: 12v Fans
« Reply #15 on: November 05, 2016, 06:46:14 PM »
Ive had one for quite some time now & its great. It uses a brushless BLDC motor & you wont get hurt if you do get caught with the blades. The comments of you get what you pay for these days just doesnt always cut it.

Offline Peterr

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Re: 12v Fans
« Reply #16 on: November 05, 2016, 06:58:24 PM »

Do you worry about sitting up in the middle of the night and getting yourself with it or is it small/light enough that it wouldn't do any damage?



Got a couple of these , they work well and are quiet too .. And yep , I've got it to contact my person twice now , no pain but makes sure I'm awake!!!

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Offline gronk

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Re: 12v Fans
« Reply #17 on: November 05, 2016, 07:05:13 PM »
Helps pump the hot air around in circles.

May need one of those for the camp fire....plenty of hot air gets expelled around one !! lol


I've been camping for approx 250 times and I'd say 2 times it's been "hot" come sleep time.....nothing a couple of extra beers didn't fix !!  ;D


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Offline tryagain

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Re: 12v Fans
« Reply #18 on: November 05, 2016, 07:08:01 PM »
They do sell ones with speed controllers for about double the price (which is still cheap) and would probably be safer as you could turn it down to a suitable speed but I am guessing that they are just a variable resistor and, it would be more energy efficient (and cheaper) to build one using a little PWM controller like one of these and put it in a box like this


Looks like they use a stepper motor inside which if so means my idea for a speed controller wouldn't work.
« Last Edit: November 05, 2016, 07:10:50 PM by tryagain »

Offline dogbox

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Re: 12v Fans
« Reply #19 on: November 05, 2016, 10:12:38 PM »
I bought a cheap one thinking what is the difference ?   ya it move a lot of air but made a lot of noise

Offline tryagain

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Re: 12v Fans
« Reply #20 on: November 05, 2016, 10:29:54 PM »
I bought a cheap one thinking what is the difference ?   ya it move a lot of air but made a lot of noise

One of these ones or a different cheap one?

Offline prodigyrf

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There's no Great Evil conspiracy against consumers within engineering, manufacturing and supply. Just the many tradeoffs incurred to satisfy diverse tastes, priorities and wallets. But first comes all the insatiable Gummint eggsperts, nanny-staters and usual suspects.

Offline The punter

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Re: 12v Fans
« Reply #22 on: November 05, 2016, 11:31:11 PM »
Sirocco, just buy one
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Offline tryagain

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Re: 12v Fans
« Reply #23 on: November 05, 2016, 11:32:30 PM »
Be quick and don't ask me why they're that cheap-
http://www.ebay.com.au/itm/Explore-Fan-12-Volt-3-Speed-/201663142262?hash=item2ef40f5976:g:ox4AAOSw44BYD64L
because they're not usually-
http://www.ebay.com.au/itm/Cool-Breeze-12V-DC-Powered-Fan-New-Caravan-Camper-RV-Motorhome-Accessories-Parts-/351334247400?hash=item51cd272be8:g:o4kAAOxyOMdS6GLq


I saw them on their website the other day and got excited, but when I went through the process to buy them it came up as out of stock, can't seem to buy them from there either.

Offline prodigyrf

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Re: 12v Fans
« Reply #24 on: November 05, 2016, 11:53:28 PM »
I saw them on their website the other day and got excited, but when I went through the process to buy them it came up as out of stock, can't seem to buy them from there either.
Yeah just noticed that too although I was a bit peeved I'd paid more like the $60 for mine some time back and that was a reasonable price compared to some. Good clickbait to get you looking at their site I guess.
There's no Great Evil conspiracy against consumers within engineering, manufacturing and supply. Just the many tradeoffs incurred to satisfy diverse tastes, priorities and wallets. But first comes all the insatiable Gummint eggsperts, nanny-staters and usual suspects.