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Torque Specifications for most Makes and Models
Thanks Joel.
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Torque Specifications for most Makes and Models
Murf, yes please ask you employee about his set up.
Flex-a-lite has a system they want over $500 using two fans.
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Torque Specifications for most Makes and Models
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Murf, yes please ask you employee about his set up.Flex-a-lite has a system they want over $500 using two fans.
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Ok, I had to go in this morning to do a few things and caught him at the shop.
It seems the conversion is simple and straight-forward, BUT (there's always a but, isn't there?) you can't do the electric fan conversion if your rig ends up at 18k # GCVW for towing etc., since the electric fans can't make enough CFM's to adequately cool the drive train under big loads.
You are stuck with a mechanical fan of some form.
His suggestion though was to skip the clutch fan and go to a flex type fan instead. It's about the same money as a stock fan will be, but will be a lifetime thing instead of replacing it every couple of years.
Best of luck.
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Torque Specifications for most Makes and Models
Murf,
You're right, Sir....there always seems to be a catch.
I wonder if there isn't a way to fasten the two clutch halves permanently together..... completely eliminating the slip function.
A heavy towing rig is going to need to have the fan engaged most of the time anyway. I'd be very tempted to find a way to drive that fan 100% of the time. During cold weather, I'd install something to reduce the amount of cold air passing through the radiator.
The fuel mileage might drop a little bit, but a guy can buy a lot of fuel for the money needed to replace that clutch.
Joel
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I wonder if there isn't a way to fasten the two clutch halves permanently together..... completely eliminating the slip function. A heavy towing rig is going to need to have the fan engaged most of the time anyway.
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Joel, the problem is that over about 35 mph the fan is actually spinning slow enough that the air coming through it is slower than the forward speed of the vehicle, in other words it is restricting the air flow, not boosting it.
The whole idea behind clutch fans is that they can be cycled on & off so that they are either 'helping or getting out of the way' and not restricting the air flow and creating unnecessary loads on the engine.
Flex fans work on a different principle, the blade is able to lay flat when not required and just spin, creating very little drag.
Electric fans just spin free when not powered.
Best of luck.
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Torque Specifications for most Makes and Models
Murf,
Maybe it's just me. I don't adapt well to new things.
My old trucks deliver power to the fan blade at all times, and I've never had any problems with any of them.
Don't get me wrong......I work on my old trucks all the time. I recently replaced a leaking gas tank on one, as well as the brakes and a few bushings. But, that truck has over 250,000 miles on it.
Certain things must be replaced over time, but I see a whole lot of newer vehicles in the repair shops these days.....with fewer than 50,000 miles on them.
I do a lot of head-scratching. No wonder I'm bald. hehehe.
Joel
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Certain things must be replaced over time, but I see a whole lot of newer vehicles in the repair shops these days.....with fewer than 50,000 miles on them.I do a lot of head-scratching.No wonder I'm bald. hehehe.Joel
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Yeah, too many new vehicles use complexity just for the sake of complexity. That's one of the things I hate about hybrids. A guy at work bought a Lexus that uses electric door handles - instead of pulling a simple mechanical handle it uses a switch in the door handle to activate an electric latch to open the door. Yech.
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Yeah, too many new vehicles use complexity just for the sake of complexity.
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I sooooo agree!
I do however find that as I get older (hehehe) I really appreciate the 'little things' they automate in the vehicles these days.
My day-to-day ride, the SUV has a bunch of those nifty little things I just can't wait to fail;
The wipers that have an infrared sensor in the windshield, if something is hitting the window the wipers come on, and in proportion to your speed and the amount of rain, snow, etc., coming down. If you stop, they do also. No squeaky wipers at a red light.
The headlights come on automatically at a preset level of ambient light, and will lower the high-beams when you meet another vehicle.
If you turn on the rear window defogger, it also heats the outside rear views.
The list goes on and on.
Now if it would only remind me what it was I went to the store to get....... 
Joel, there was nothing wrong with fans that don't free wheel, but in an effort to gain fuel mileage and optimize cooling, they went the way of the no-draft window.
Best of luck.
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Torque Specifications for most Makes and Models
I did see that 18,000 GCVW was the advertised max for the electric fans across the board.
I didn't do a lot of research on the flexfans though but need to.
A direct-couple is available for Fords using the old fan I saw. A direct fan uses a purported 20-30 HP right off the top, and 2-3 MPG.
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On my 6.2L GMC the fan clutch failed.
Simply drilled a couple of holes and ran 1/4" bolts to permanantly lock it fixed.
Ran that way 'til I sold it 3 years later.
That was a plow truck and she kinda ran hot most times anyway so didn't matter.
The 2 bolts was to make it closer to balanced.
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