DIY Motorhome skylight vent fan
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- Опубликовано: 25 авг 2024
- DIY thermostatically controlled roof light fan, variable up to over 1000cfm (!)
Sorry for the poor video work, I really need a camera and 3 hands rather than a mobile phone!
The items used in this project:-
300x300 white vent @ £6.50 amzn.to/3rl6uMi
10" 12v fan @ £15.60 amzn.to/3kDRcAI
Cig lighter power switch @ £6.50 amzn.to/2W6WElL (3m cable length available too)
10A speed controller @ £8.70 for 2x amzn.to/3iwEfpM
W1209 thermostatic relay @ £3.59 www.ebay.co.uk...
SPDT switch (on-off-on) @ £2 www.ebay.co.uk...
Then it needs a basic wood square 370x340 with a 10" hole in it - then just screws/wires together.
I've been researching different camper build ideas for ages and I knew I had watch a few of your videos. I had a look at your list of videos and realized I've watched all of them.
lol. Thanks, and sorry they are so poorly produced! Hopefully there are some different ideas there - some to improve on, some to discount. You are doing it right, research & plan before starting. Good luck!
@@Ryan_DYD When the content/subject of a video is good, it doesn't matter if there is an odd shaky camera moment.
Great work I did same in my motor home but the stat was a clever idear mate.
Thanks, good old ebay for having all the electronics! The speed controller keeps the noise down, and the thermostat is useful too. Worth doing if you don't have a maxxfan
Nice project. I would get a label printer though to make it even better.
Great idea - but would need high temp adhesive labels. Maybe a CNC laser engraver..... Hmmmm......
That looks like a radiator fan, I had the same idea and have a similiar fan on hand - I have a 200mm high vertical section to mount mine, yet the high-pressure/low-cfm nature of such fans, and tests showing the same, is making me now look at alternatives (I'm converting a pantech, think large box truck, much larger than average van/trailer).
What's your IRL experience with it like?
in one. the fan is linked in description and is a motorbike 12v fan. works well enough for the purpose. could be quieter on full blast but that's rarely used, the speed controller works well
Hi i have brought all the bits for this and its come to £43.48 and still pleased but the only thing is can you send me a tell me how to wire it up please. To buy a proper fan to take smells out when im cooking in my caravan is over £300 and only works when on full electrics and think this is a great idea as we can use this off grid.
What do you need to know? I used a 12v fan, so just needs +12v and -ve connections. But, if you want a speed controller you need to put that between the power and the fan. And if you want a thermostat, it needs to be between the power and the fan (or speed controller). The thermostat was a W1209 (search ebay) and speed controller search "12v dc pwm speed controller". Each "module" comes with their own instructions.
(For mine, to go backwards (blow rather than suck), I turn fan unit up side down - your fan may work backwards, I didn't check)
Can you update us now that it's been 2 years as to how well this is working out? I really prefer the idea of having a skylight with a removable fan.
Hi. The *gold* standard is maxfan.... But this is still working and working well, and significantly cheaper. Some points. 1- it needs space to live when not in use; 2-it needs an accessible power socket. 3 - I started using a normal 12v cigarette connection but when fan on "high" it pulls a lot of power and the plug/socket got too hot for my liking. This is "normal" on high current through a cigarette lighter. So I changed the plug/socket from cigarette to "hella" type - which is similar size but much better connection and ergo less resistance/less heat/safer. I actually now use the hella connection for all high current 12v plug/sockets. See amzn.to/3Y1Tqh5 and do some reading :) but yes, fan works well
@@Ryan_DYD thank you so much for the info. Really appreciate the advice.
Great, thanks for sharing
Thanks for watching!
Is that the way you want the thermostat to work? It seems it cuts off when the temp gets to 25deg, rather than cutting off if the temp is below 25deg.
Hi, must be poor video, sorry. The relay clicks "on" above a certain temp (25') and the fan starts, and then when temp drops below 24' it goes off. So fan only cuts in when too hot. The W1209 is configurable in terms of the delta (so could have it on at 25 and off at 20) or you can reverse it so it goes on below 24 and off above 25. As it is, its the right way round :)
@@Ryan_DYD Cool. I misunderstood what was going on. Nice work mate.
@@DaveEverett01 No worries. The W1209 gizmos are really good and configurable (and cheap!) - I have one running extra fans for the compressor fridge ventilation and one for running heat extraction from the (uninsulated) garage area.
Good video, much better than a maxxfan if for anything cost. I think your video covers it. Did you power with a 12v 10amp switched cigarette device 9r direct connection to the leisure battery.. Also did you have an inline fuse or is it connected to your fuse board. I'm hoping to power with cigarette socket, direct to my independant 2000w solar generator. Which gives me 240v anytime any place, anywhere. But I could directly connect the controller to the leisure battery but likely I will drain the 85amp battery quickly. Your advise is welcome either way and to be honest, it may be try and fail or it works. In any even good video
I have dual (redundant) "aux" circuits to the 12v sockets, so use those. Each ciruit is fused. I did use a 12v cig lighter (with inbuilt fuse) - but the plug got hot when on high (poor connection/high resistance) - so changed the plug/socket to teh european hela version which is rated higher and grips better. Low speeds power usage is low, its only high when the current is high.
Great video, will be basing my build on it. Just one question regarding voltages in all components. A fully charged leisure battery will put out almost14v; will the relay, speed controller etc tolerate this voltage?
Fair question - and easily 14v when driving, though I've limited solar/EHU to 13.8. I've seen no problems. My lighting circuts have 12v regulators so they only give 12v (and a smooth 12v at that) - so no flickering/dimming. As for these, checked the video and links/products changed. Mine is *like* amzn.to/3qrEgD7 - says it can take 35v so the input voltage isnt an issue. Output is pwm so if any concern just don't put to 100% :) Note the branded maxxair can fail on 14v so they should be on a 12v regulator as well. Also (IMO) the fan I use is a motorvehicle fan - so used to alternator voltage (14.8?). No issues to note in our use. HTH.
PS - I use many W1209 relays for fridge and other bits - even running at 14.4v (b2b voltage). Never had a failure (and cheap enough to carry spare!)
Hi done a great job can you tell we’re you got the cupboard handles from please
lol. Good spot. Not mentioned on the fan vid! They are mentioned in another vid, and are very good. From ebay - see www.ebay.co.uk/itm/143445042267 or www.ebay.co.uk/itm/183728305296 as an example, generally searching nickel push handle or nickel button handle and note nickel/nickle......