Fantastic fan installation 1964 Globetrotter

[Rick0824]

I am getting ready to install a fantastic fan in my 64 Globetrotter, the instructions says to use the screws that are provided. Should I use the screws or rivets? Also, what should I use around the flange to seal it?

[DFlores]

The screws provided with mine were wood screws, the holes in the plastic lip of the fan are "v" shaped, so rivets will not have much surface area to hold.

What I did was install stainless steel pan head sheet metal screws from Home Depot with a good thick layer of the "626" so called Vulkem under the lip and around and on top of all screws.

Use blue tape to limit the area for the sealant, then drag a finger dipped in WD 40 around the edge to form up a nice bead, then pull up the tape fairly quickly.

[TG Twinkie]

I slipped a block of wood between the inner and outer skins around the perimeter of the hole. I then used stainless steel pan head screws.
As per the instructions with the fan. I ran 2 beads of sealant around the perimeter of the opening.
I used a product call LEXELL as the sealant. But I have an Argosy. LEXELL is not silicone. It has incredible adhesion ability.

[68 TWind]

Use pan head SS screws with SS washers instead of the supplied screws. This will spread the force over a much larger area than using the supplied screws in the countersunk holes. Lot's of folks have problems with the flange cracking when using the supplied screws. I used vulkem and not the supplied gasket. A dab of sealant on the head of each screw head and 4 years and no leaks or cracks- so far. We love the FF.

[Rick0824]

Thanks to all for the advise, I will definitely use the SS pan head screws.

[gdanderson]

Because I did not want to cut the original 1967 Safari, 22-ft. roof vent hole to a larger size to accommodate a Fantastic Fan I tried something else. I dismantled the fan housing removing the fan and electronics. Installed the fan within the original vent housing. Was able to adapt the switches and install them so it look quite nice.

Greg Anderson
Wisconsin

[Airnovice]

I am installing a "fantastic" fan to replace one in my '64 Overlander. I find that the fan circuit is 20v not 12v. Is ther a voltage reduce I can use? Solution?

[MarkR]

Originally Posted by Airnovice

I am installing a "fantastic" fan to replace one in my '64 Overlander. I find that the fan circuit is 20v not 12v. Is ther a voltage reduce I can use? Solution?

you meant "120v" right?

[Airnovice]

No; 19-20v. Even the original wire diagram says that vent fans and furnace fan are 20v. I did find a 24v to 12v reducer. May try that or try to access the 12 lighting circuit?

[robwok]

Airnovice. Just looked to your other posts to see if you put any pics out there. On my Overlander, the first thing I did was pull the old heavy converter out and replace it with a charge controller and inverter. The original univolt may have had peaks of 20V because it would also cook people's batteries. The only thing that would make them run at 20V was the converter. If you keep that in, you're going to have a hard time maintaining any of the deep cycle batteries used today, and you'll have to stick with a led acid battery and even then you may end up having it boil all the liquid off.

I would suggest you take that out, or even replace it with an automotive battery charger for the time being. (get some money for the copper when you do). The fans will run on 12v, and definitely the fantastic fan will run on 12v as well. I have my original exhaust fan over the stove and it runs fine on 12v (though it is loud and I'm thinking of replacing it) It would be better money to spend on your charge converter than to get a step down 24v to 12v transformer.

Rob

[TouringDan]

Originally Posted by gdanderson

Because I did not want to cut the original 1967 Safari, 22-ft. roof vent hole to a larger size to accommodate a Fantastic Fan I tried something else. I dismantled the fan housing removing the fan and electronics. Installed the fan within the original vent housing. Was able to adapt the switches and install them so it look quite nice.

Greg Anderson
Wisconsin

Greg

Thanks for posting this mod. Excellent work. I would like to do something similar with my 66 Tradewind vents if I could. I have three of them.

And thank you Aluminuminum for referencing this thread from the “Fantastic fan upgrade using old (1973) vent housing”.

Dan