My Fan install

ncrr · 07-14-2016, 11:11 AM

We live along the coast in South Carolina, and the heat/humidity along with no-seeums and mosquito's are a way of life here in the summer months. The only way to avoid it or them is to stay inside in the A/C.

But Annie & I enjoy traveling around our neighborhood on our golf cart. Just about every evening we pack up some goodies, along with some 'fruit-of-the-grape' to enjoy while sitting along the bay shoreline.

I installed the fans to move the air around for 'cooling' and to have enough of a breeze that most all of the insects find too breezy to land. There are some days that there seems to be an armada put together for attack, so on those days we simply 'retreat' and head for the screened porch....

This installation is very easy to do, and consists of just two items. The overall cost of parts will be about $92, and guaranteed you'll enjoy the breeze.

https://www.amazon.com/Pro-comp-Elec...TVX0DEPESGEDA8

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

The PWM (Pulse Width Modulator) is the 'heart' of this install. The effect it provides can be compared to a variable resistor or 'potentiometer', simply reducing the DC voltage from off to what ever voltage you desire to whatever (within reason) the supply voltage was. I supply mine with 36VDC, so it's output, adjusted by the front mounted dial can be varied anywhere between 0 (off) and 36VDC. Couple this to the fans, now you have variable speed fans.... For more info on how PWM's work, google "PWM" and you'll get plenty of info, but it may put you to sleep.....

Word of caution, these fans are 'designed' to run on 12VDC, they will run faster but, for example, running them wide open at 36VDC would move a lot of air for a very short time, then they will most likely fail. You may elect to connect them to whatever your 12VDC source is (batteries or voltage converter [best choice]).

The wiring for the install is very simple, do not connect any wires from your source untll all other wiring has been completed.

Run a pair of wires from your source voltage, observing polarity, to the 'input' barrier strip terminals on the PWM. You may want to fuse that supply with a 10 to 15AMP fuse. Next connect the output terminals of the PWM to the termials on each of the fans. Observe polarity, or you may have a fan running opposite from the other.

Once the wiring has been completed to the PWM and Fans, start with the PWM front mounted dial fully counter-clockwise - OFF (there is a noticeable click as you rotate to OFF). Connect the source voltage, observing polarity. Slowly rotate the dial clockwise, and note that as you continue to move clockwise, the fans will increase speed. If the fans rotate in the wrong direction, simply reverse the two wires on the PWM output terminals.

If you are adventuresome, the dial part can be mounted elsewhere (as I have done), since there is a small cable attached. You must remove the cover, detach the dial, and extend the extra cable.

Enjoy!!!!

BigShowDuramax · 07-14-2016, 04:14 PM

very cool. I'm in SC too and may have to give this a shot.

16ezgoEL6 · 07-25-2016, 04:52 AM

ncrr, do you happen to have larger images you can share? I'm trying to get a hold of how the angle braces are attached. It seems you have the extended roof which is what I have and I was looking to see how you connected the braces. Also, did you run the wiring through the roof channel(track)?
I'm in south florida and of I've been thinking of doing this for a while now, I'm glad to see someone did.

Thanks

ncrr · 07-25-2016, 05:51 AM

Quote:

Originally Posted by 16ezgoEL6

ncrr, do you happen to have larger images you can share? I'm trying to get a hold of how the angle braces are attached. It seems you have the extended roof which is what I have and I was looking to see how you connected the braces. Also, did you run the wiring through the roof channel(track)?
I'm in south florida and of I've been thinking of doing this for a while now, I'm glad to see someone did.Thanks

PM'd you.... Will try to get that together today.... We love them, for the bugs, and the heat.....

Henri

16ezgoEL6 · 07-29-2016, 05:06 AM

Quote:

Originally Posted by ncrr

PM'd you.... Will try to get that together today.... We love them, for the bugs, and the heat.....

Henri

Would you mind also taking a picture of your dash or wherever you mounted the speed controller.
Thanks again.

NCPW · 07-29-2016, 07:23 AM

Please post to this thread so all can see.

ncrr · 07-29-2016, 07:57 AM

Quote:

Originally Posted by NCPW

Please post to this thread so all can see.

OK, Will do....... NCRR

ncrr · 07-29-2016, 08:05 AM

This was my PM response to an earlier question. I'm posting it here so the 'record' is complete. I will post the answer and pic's abot the PWM later today...

Quote:

Good Morning,

I have attached 2 shots, as I believe will cover your 2 questions...
Picture 1 - a shot of the mounting of the 'L' to the top. First of all, I did not want to poke holes into the roof if at all possible, for 2 reasons: a) they usually leak at some time, and b) the roof structure is very uneven, so a parallel install of 2 rails providing a flat equal plane would be difficult to achieve.

The mounting is simple, remove a bit of the 'L' bracket so it can be screwed to the aluminum frame of the top (use the heavier gauge aluminum 'L'). A single screw is all I used, and after many miles, they have not loosened (I did put a star washer on them). What is important, these fans MUST be mounted on a flat surface, any warp at all will most probably result in the fan blades rubbing somewhere on it's frame, making noise. I had to remove the blades from 1 fan, and trim (with a dremel) some spots on the fan frame. Don't remove material from the blades, as that will put them out of balance.

The fans come with some slip on fasteners (4) that you bolt onto the frame rails. They work well, the fans weight keep the fans down. They are mounted with 1/4-20 bolts and airplane nuts.

I have the fans positioned so that when we are seated, the center of the fan is just slightly forward of the center of our heads. I'd guess the fan center is directly up from our foreheads.

= = = = = = = = = = = = = = = = = = = = = = =

Running the wires - This was my biggest issue... Frustrated the $hit out of me....

I wanted to use some kind of wiremold or conduit to hide the wires. Everything I tried looked like crap. I tried 'fishing' the wires inside the support brackets, and quickly realized that where the connecting bolts are, there is very little space between the sides of the bolts and the frame. I decided the easiest was to sorta tuck/blend them along the inside edge of the support rails. Actually, it does not look bad.... but I still wish I could have found something.....

I simply stretched the wires tight, and did a wrap of electrical tape every few inches. It's not bad, the wires have not moved around, so I've come to like it.

Hope that helps. If you wish I can measure the center to center distance between the rail screws, but it would most likely be different if you used different fans. I did it the easy way (I think). I first mounted the rear rail with it's screws, and clamp mounted the front rail so I could adjust it. Then I just laid the two fans on top of the rails, making sure that all the mounting holes all lined up well on the rails, marked everything well, did all the drilling, and put it together....

16ezgoEL6 · 07-29-2016, 01:31 PM

Just a suggestion to your response about hiding the wires. I tricked I learned back in the day is to take some thin string and fish it into the frame, then a vacuum cleaner will suck the other end out. I don't know if you thought of this or if it will work, but I'll certainly try it!

ncrr · 07-29-2016, 05:43 PM

Quote:

Originally Posted by 16ezgoEL6

Just a suggestion to your response about hiding the wires. I tricked I learned back in the day is to take some thin string and fish it into the frame, then a vacuum cleaner will suck the other end out. I don't know if you thought of this or if it will work, but I'll certainly try it!

Yes, we did that when I was an electrician to get a pull cord thru conduit. Much easier than a snake, cause you can get around compound corners, and cannot with a snake. Trying to snake thru 100' of straight conduit is bad enough!!!

I think where you will have difficulty everywhere there is a thru-bolt. On my cart all the thru-bolts holding the frame together are 3/8". To make matters worse, the holes are punched thru, and not drilled. This left a good sized curl on the inside also restricting the space even more. I may have been able to get the speaker wires up there (they are small), but never the wire for the fans. Could also be that I pulled bigger wire than I should have for the fans. The fans are rated at 18watts at 12VDC So that's 1.5 amps per fan, or 3 amps, which should be #14 wire. I think I pulled #12.... I'll check...

All that said, go for it, let me know, I might try a rerun.....

Henri

07-14-2016, 04:14 PM	#2
BigShowDuramax Getting Wild Join Date: Apr 2016 Location: Darlington, SC Posts: 99	Re: My Fan install very cool. I'm in SC too and may have to give this a shot.

07-25-2016, 04:52 AM	#3
16ezgoEL6 Not Yet Wild Join Date: Mar 2016 Posts: 15	Re: My Fan install ncrr, do you happen to have larger images you can share? I'm trying to get a hold of how the angle braces are attached. It seems you have the extended roof which is what I have and I was looking to see how you connected the braces. Also, did you run the wiring through the roof channel(track)? I'm in south florida and of I've been thinking of doing this for a while now, I'm glad to see someone did. Thanks
16ezgoEL6 Not Yet Wild Join Date: Mar 2016 Posts: 15

07-29-2016, 07:23 AM	#6
NCPW Just Gone Join Date: Sep 2015 Location: North Carolina Posts: 3,549	Re: My Fan install Please post to this thread so all can see.

07-29-2016, 01:31 PM	#9
16ezgoEL6 Not Yet Wild Join Date: Mar 2016 Posts: 15	Re: My Fan install Just a suggestion to your response about hiding the wires. I tricked I learned back in the day is to take some thin string and fish it into the frame, then a vacuum cleaner will suck the other end out. I don't know if you thought of this or if it will work, but I'll certainly try it!
16ezgoEL6 Not Yet Wild Join Date: Mar 2016 Posts: 15

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07-14-2016, 11:11 AM	#1
ncrr Gone Wild Join Date: Jul 2015 Location: Georgetown, SC Posts: 188	My Fan install We live along the coast in South Carolina, and the heat/humidity along with no-seeums and mosquito's are a way of life here in the summer months. The only way to avoid it or them is to stay inside in the A/C. But Annie & I enjoy traveling around our neighborhood on our golf cart. Just about every evening we pack up some goodies, along with some 'fruit-of-the-grape' to enjoy while sitting along the bay shoreline. I installed the fans to move the air around for 'cooling' and to have enough of a breeze that most all of the insects find too breezy to land. There are some days that there seems to be an armada put together for attack, so on those days we simply 'retreat' and head for the screened porch.... This installation is very easy to do, and consists of just two items. The overall cost of parts will be about $92, and guaranteed you'll enjoy the breeze. https://www.amazon.com/Pro-comp-Elec...TVX0DEPESGEDA8 https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1 The PWM (Pulse Width Modulator) is the 'heart' of this install. The effect it provides can be compared to a variable resistor or 'potentiometer', simply reducing the DC voltage from off to what ever voltage you desire to whatever (within reason) the supply voltage was. I supply mine with 36VDC, so it's output, adjusted by the front mounted dial can be varied anywhere between 0 (off) and 36VDC. Couple this to the fans, now you have variable speed fans.... For more info on how PWM's work, google "PWM" and you'll get plenty of info, but it may put you to sleep..... Word of caution, these fans are 'designed' to run on 12VDC, they will run faster but, for example, running them wide open at 36VDC would move a lot of air for a very short time, then they will most likely fail. You may elect to connect them to whatever your 12VDC source is (batteries or voltage converter [best choice]). The wiring for the install is very simple, do not connect any wires from your source untll all other wiring has been completed. Run a pair of wires from your source voltage, observing polarity, to the 'input' barrier strip terminals on the PWM. You may want to fuse that supply with a 10 to 15AMP fuse. Next connect the output terminals of the PWM to the termials on each of the fans. Observe polarity, or you may have a fan running opposite from the other. Once the wiring has been completed to the PWM and Fans, start with the PWM front mounted dial fully counter-clockwise - OFF (there is a noticeable click as you rotate to OFF). Connect the source voltage, observing polarity. Slowly rotate the dial clockwise, and note that as you continue to move clockwise, the fans will increase speed. If the fans rotate in the wrong direction, simply reverse the two wires on the PWM output terminals. If you are adventuresome, the dial part can be mounted elsewhere (as I have done), since there is a small cable attached. You must remove the cover, detach the dial, and extend the extra cable. Enjoy!!!! Last edited by ncrr; 07-14-2016 at 11:11 AM.. Reason: spelling....

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