New Project - Pusher Fans

FredG · #1 (**permalink**) 01-16-2020, 03:42 PM

It's been some winter for projects and upgrades. Carbon fiber dash and new gauges along with LED warning lights and switches. Upgraded headlights. Aluminum gas tank. Rear shocks. Front steering upgrade. Front shocks and springs upgrade. New Carb. Now...pusher fans. Do I need them? Nope my 427R does just fine with the puller even on the hottest days. Do they look sharp? Definitely. Will be functional? Of course. I just need to decide how I want them to work. They will be independent of the puller.

bwcobra15 · #2 (**permalink**) 01-16-2020, 04:24 PM

Did you fabricate the mounting bar? I have a pair of fans myself, and haven't installed them yet.

spdbrake · #3 (**permalink**) 01-16-2020, 06:12 PM

Thanks for posting this Fred. Please post a shopping list and some dimensions done.

FredG · #4 (**permalink**) 01-16-2020, 06:35 PM

I will post updates and info as I get into it. Mounting bar came with it. Probably going to do a separate switch with a circuit breaker and relay. I want to test them with my DC power supply. Here is where I got them from.
https://www.parts123.com/parts123/yb...Z5Z5Z50000027b

spdbrake · #5 (**permalink**) 01-16-2020, 07:03 PM

Thanks, I'm glad its not made of Pallet racks like some I've seen, lol.

https://www.mcmaster.com/4940t321

FredG · #6 (**permalink**) 01-16-2020, 07:32 PM

That's funny. I have seen those. The fans have some weight to them so they will have to be securely mounted.

Lou1119 · #7 (**permalink**) 01-17-2020, 10:44 AM

Quote:

Originally Posted by FredG

I will post updates and info as I get into it. Mounting bar came with it. Probably going to do a separate switch with a circuit breaker and relay. I want to test them with my DC power supply. Here is where I got them from.
https://www.parts123.com/parts123/yb...Z5Z5Z50000027b

I purchased the same set up and installed them on my SPF Cobra. The mounting brackets on the side are a joke. There is no way that you can use them. They are so flimsy that you can't weld them to the bar. You will have to fabricate something to be able to attach the bar to. Not impossible but it will be necessary. Mine is operated on a dedicated circuit with a relay controlled by its own switch on the dash board. I agree that the puller fans do a great job but the pushers are for eye candy.

FredG · #8 (**permalink**) 01-17-2020, 12:36 PM

I take it you are referring to those little plates that were taped on to one end. I pretty much discounted them. I will figure out something for the brackets. I am pretty pleased with the quality of the set up. I will run a 12v lead with a reset breaker off the backside off the battery cut off to a relay that will be activated by the ignition switch. From there through a toggle with a blue LED indicator to the fans. I don't want them running unless I switch them on.

Fred

spdbrake · #9 (**permalink**) 01-17-2020, 03:12 PM

Fred, I added two buss bars (1 + and 1 -) in the trunk near my battery cut off. Ran a 40 amp C/B to the positive one.

Mainly so it would be easy to add-remove items to the car. Like the EFI setup I experimented with a couple of years ago, added phone charger etc...
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

I had Lucas toggles for a short while for fans, fuel pump, and used metal switch labels from https://www.bits4landys.co.uk/series...s-switches.htm

As usual the Lucas switches died in short order. (I should know better)

The next set of labels I'm ordering thru Carolina Laser. 1/2 bore for standard toggles. https://www.legend-plates.com/toggle...late-two-lines $4.00 each

https://www.legend-plates.com/most-popular

Lucas - Prince of Darkness - Lucas Electrical Humor Jokes

FredG · #10 (**permalink**) 01-17-2020, 07:13 PM

I never even considered a phone charger. Hi tech. Here is a picture of the unit with a ruler. It's about 1 inch too long to fit so I trimmed a half off each side. Mounting will require a little creative engineering as all of the structure around the radiator is fiberglass. You need about 2 inches of clearance from the support to the radiator for fan clearance. The motors are heavy and not balanced on the support so the want to roll. That issue is solved with 2 supports. I will figure it out.

FredG · #11 (**permalink**) 01-18-2020, 01:31 PM

I came upon these while searching around. Stainless steel. They extend out 3 1/2 inches. I ordered a pair to test them out. Anyone recognize them?

spdbrake · #12 (**permalink**) 01-18-2020, 01:45 PM

Could be

Just kidding, I've no clue other than it could be a boat railing part.

I'm thinking I'll hold off on the fans until I do the radiator. I have the factory E36 radiator now. Works fine just really old and I'm not fond of plastic end caps.
It will be either a Mishimoto or CSF radiator.

https://www.amazon.com/CSF-3054-High...DCTPHYY8J4RX5B
https://www.amazon.com/dp/B003GZFEAW..._t1_B001FJ9VEQ

FredG · #13 (**permalink**) 01-18-2020, 02:26 PM

Bathroom Stall Partition bracket.....or now known as the pusher fan bracket.

patrickt · #14 (**permalink**) 01-18-2020, 02:29 PM

Fred, I can't help you on the mounting problem, but my very old thread on wiring them up, and why I did it the way I did, might be useful: Cool Modification - For Pusher Fans Only, Though

FredG · #15 (**permalink**) 01-18-2020, 07:56 PM

Patrick.

I read your old thread a few times a while ago and being a retired advanced electronics teacher I might be one of the few who understands it. You did a good job with the circuitry and finding the appropriate parts. In my case, the pushers will be more cosmetic because I don't need them for cooling. They will work but independent of the puller and only when I turn them on. Thanks for the suggestion though. On a lighter note, I am expecting good things to come from the bathroom stall brackets.

Fred

FredG · #16 (**permalink**) 01-21-2020, 06:59 PM

I will be wrapping this up by the weekend as the mounting brackets arrive tomorrow and I am sure they will require a little tweeking. The fans are mostly cosmetic because my Roush 427r never runs hot and the puller effectively keeps it cool. The fans will work separate from the puller and be controlled with a toggle. I took the 12v power source directly from the back of power shut off ran it through a 30 amp Auto reset breaker. From there it goes to a normally off relay that will be turned on when the key is on. Power from the relay goes to the SPST toggle that has a mini LED connected in parallel to act as an on indicator. In other words. Start the car. Throw the toggle. the fans and light come on. Simple as that. Here are pictures of the parts. Every connection is either soldered or crimped and sealed with shrink wrap. Here are the pics of the parts. If anyone needs links, I will provide them to you.

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

FredG · #17 (**permalink**) 01-22-2020, 09:11 AM

It appears the the bathroom partition brackets are going to work out quite nicely for mounting the fans.

FredG · #18 (**permalink**) 01-28-2020, 09:10 AM

Pusher fan project is completed and works great. Fans are more powerful than expected and work independently from puller with a dash mounted toggle. Parts used in project are listed in above posts.

spdbrake · #19 (**permalink**) 01-28-2020, 09:31 AM

Great job Fred! Do you have the PN of the bathroom partition bracket? I know it most likely a standard spec but just to make sure I don't order a one-off.

FredG · #20 (**permalink**) 01-28-2020, 02:19 PM

The fan support is 3/4 x 3/4. I ordered two different size brackets from two different companies. One is 3/4 wide and the other is 1 inch wide. I went with the bigger one and used some stainless steel washers to take up the space. I found this easier because it's difficult to get the brackets perfectly parallel. Also, the 1 inch bracket is longer and beefier. The bottom one is one I went with.

https://www.allpartitions.com/urtwoearheav.html

https://www.robertbrooke.com/chrome-...2-x-3-1-2.html I used this one. Picture on bottom