Air Flow around Genny

[supersparky]

Dot, I will assume that you run the big red throbber in the bay, probably with the door shut? How much space do you have to play with? Did excessive heat kill the old ones or did they vibrate to death?

[wayneP]

Dot & George,
I Have a yamaha 5.5 (I think Not near to check correctly) and it is in the bay, not on slide out like yours.
The back wall is just mesh and have place a 12 inch car fan there to blow from under motorhome out and around genny. When fan not running the bathroom floor directly above gets warm and so does fuel tank. Obviously when running the floor and fuel tank stay coolish. The fan is connect to the small electric start battery and has a on/off switch. At the time Adele had no problems starting etc when needed. Hope that helps.
Wayne

[wayneP]

ps The noise level of the fan matched that of the genny it self.
Wayne

[Dot]

Dot, I will assume that you run the big red throbber in the bay, probably with the door shut? How much space do you have to play with? Did excessive heat kill the old ones or did they vibrate to death?

Now and again we run the red throbber while on the move, then when the weather is hot the door is open. Can't see them shaking themselves to death due to the extra soft air susp ride. The throbber has about 100mm clearance top and 2 sides and the hot air exhaust end is open and the air intake is reasonably good.
The dead fans looked ok no melted plastic to be seen to the inside or outside.

Wayne that was interesting thanks, winter time could be good though with a warm floor . Our big red thumper is nice and quiet thank goodness.

[BruceS]

Would something like this fit Dot? Already mounted on plastic charade.
http://www.ebay.com.au/itm/Holden-Commo ... 2442194677

[Newcastle George]

Bruce, I take it you mean facade rather than a plastic Daihatsu.

George

[Noggins]

Actually the Diahatsu have a very efficient thermo fan.
But for cooling air I'd be putting a car's thermo fan inside the ''box'' and a down facing ( large ) grill in the door.
Then use the 12v , if fitted to the genni , via a relay that actuates when big red is running.

It's easier to use the 12v than the 240v for applications like this as they have proven built in testing and reliability.

Ron

[El Gringo]

If you do go with the 12v fan fed from the genni, you need to check the output in amps of the genni.
I believe most are about 8 amps, but whether this is continuous or not is another factor as well
This will of course limit the thermo fans you could use.
In vehicle applications they are usually wired through a relay, but that might defeat the purpose somewhat as you would then be drawing power from your batteries.
Something like this may do the job wired direct though...
http://www.ebay.com.au/itm/10-inch-12V- ... xy039TMQZV

heers,

[BruceS]

haha .... something like that George!! I was trying to think of the right word to use!
Maybe shroud?
https://www.google.com.au/search?q=fan+ ... AXYQsAQIHw

[jon_d]

If its died fro vibrations, then going to a 12volt version and all the other additional work probably won't stop the next failure.

It might be a case of just having to replace them every once in a while. Are they mounted in the axis they were designed for?

Having said that, a car thermo fan is design for the rugged environment.... Maybe that might be a better choice?