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Electric cooling fan
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Topic: Electric cooling fan (Read 4650 times)
Bob & Tracey
Full Member
Posts: 186
Electric cooling fan
«
on:
September 20, 2013, 12:38:53 PM »
Is anyone running an electric cooling fan instead of the engine driven fan? I think I would like to pursue this... Any thoughts???
Bob
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Bob & Tracey Rice
1956 GMC PD4104-1611
DaveNCari
Jr. Member
Posts: 80
Re: Electric cooling fan
«
Reply #1 on:
September 20, 2013, 12:47:35 PM »
Instead of...NO! In addition to...YES!
I have a large electric fan blowing IN while the engine driven fan draws through.....
Dave
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Coming soon.....need of a bus-friendly RV park.....that values Liberty!
Watch this space....
FloridaCliff
Hero Member
Posts: 2463
"The Mighty GMC"
Re: Electric cooling fan
«
Reply #2 on:
September 20, 2013, 01:08:39 PM »
Hey Bob,
This is a topic that comes up every now and then.
I will let the residential engineers speak, but basically, for the amount of CFM you need, the size of the motor required to move that air, the generator required to produce the power, its not worth it.
For the long time bus board members "remember Two Dogs?"
Cliff
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1975 GMC P8M4905A-1160 North Central Florida
"There are basically two types of people. People who accomplish things, and people who claim to have accomplished things. The first group is less crowded."
Mark Twain
bevans6
Hero Member
Posts: 6205
1980 MCI MC-5C
Re: Electric cooling fan
«
Reply #3 on:
September 20, 2013, 01:10:16 PM »
I've seen four stroke buses running a bank of 16 to 20 electric cooling fans on a very large side mounted radiator, I assumed they were for engine not AC. The normal presumption is that a two stroke generates too much heat, the radiators are too small and the electric fans don't generate enough CFM of airflow. I think that if you say doubled the size of the radiators you might be able to use electric fans. People have tried it though.
Brian
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1980 MCI MC-5C, 8V-71T from a M-110 self propelled howitzer
Allison MT-647
Tatamagouche, Nova Scotia
chessie4905
Hero Member
Posts: 7101
Re: Electric cooling fan
«
Reply #4 on:
September 20, 2013, 01:55:18 PM »
I think TwoDogs was quite successful with his electric fan setup. It may be still in the archives. Worth the read.
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GMC h8h 649#028 (4905)
Pennsylvania-central
TomC
Hero Member
Posts: 9255
Re: Electric cooling fan
«
Reply #5 on:
September 20, 2013, 01:58:15 PM »
With the size of the 4104 radiator, the electric wont cool enough. Stick to what works and has worked for over 50 years. Transit buses can and do use electric fans mainly because they have each stop to cool off. Pulling a long grade is completely different. Good Luck, TomC
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Tom & Donna Christman. 1985 Kenworth 40ft Super C with garage. '77 AMGeneral 10240B; 8V-71TATAIC V730.
niles500
Niles500
Hero Member
Posts: 1384
ROSIE
Re: Electric cooling fan
«
Reply #6 on:
September 21, 2013, 12:53:45 AM »
You call this successful?
http://www.busnut.com/bbs/messages/233/10584.html
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(='.'=)
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- Niles
Bob & Tracey
Full Member
Posts: 186
Re: Electric cooling fan
«
Reply #7 on:
September 21, 2013, 04:23:17 AM »
Thanks, I am hearing what I kinda thought already. I will leave things as they are.
Bob
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Bob & Tracey Rice
1956 GMC PD4104-1611
chessie4905
Hero Member
Posts: 7101
Re: Electric cooling fan
«
Reply #8 on:
September 21, 2013, 05:51:58 AM »
Successfull to him. Entertaining to the rest of us. AC condenser fan from 4905 should work, as the coils are about same size as 4104 rad. That motor draws a lot of amps though. He could install a torus fan setup from one of the city old looks. We put one on our 4104. One main problem with most GM's is engine to radiator clearance, which probably is limiting for the large electric motor required.
Here's info for thought:
http://www.electricfanengineering.com/
Here is a location for replacement fan blades of more efficient design and airflow. Also cw or
http://www.hortonww.com/products/products.asp?/en/39
rotation avail:
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GMC h8h 649#028 (4905)
Pennsylvania-central
luvrbus
Hero Member
Posts: 26049
Re: Electric cooling fan
«
Reply #9 on:
September 21, 2013, 06:00:12 AM »
Read the archives about Mark's (Boomers) electric fans on his Eagle a different set up but they work it has for years
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Life is short drink the good wine first
Don Fairchild
Hero Member
Posts: 792
Re: Electric cooling fan
«
Reply #10 on:
September 21, 2013, 09:48:28 AM »
Clifford, doesn't Hal run electric fans on his eagle. I know he has a four stroke but they work for him and he has that power dialed up a lot if I recall. I like hydraulic fans myself.
Don
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luvrbus
Hero Member
Posts: 26049
Re: Electric cooling fan
«
Reply #11 on:
September 21, 2013, 09:53:28 AM »
Yea he does Don right now he running 625 hp on his series 60
Logged
Life is short drink the good wine first
lvmci
lvmci
Hero Member
Posts: 2361
Re: Electric cooling fan
«
Reply #12 on:
September 21, 2013, 11:39:48 AM »
Hi All, I had asked once before about other options, specifically for situations where low rpms was causing heat build up, in a traditional fan belt set up. I don't remember if I ever asked properly about running an evapoative style 3/4 or 1 HP 24 volt electric fan belt motor to run the squirl fans off the same pulley, at maximum speed in those situations. Has any one ever done that? I was thinking if I was in stop & go fwy driving, the squril cages could draw the max amount of air thru the radiators and blow thru the engine compartment, standing still, of course the amperage draw would be the qualifier, lvmci...
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MCI 102C3 8V92, Allison HT740
Formally MCI5A 8V71 Allison MT643
Brandon has really got it going!
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Electric cooling fan
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