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| Re: [GMCnet] Fan Clutches [message #84058 is a reply to message #84052] |
Tue, 11 May 2010 09:53   |
Rick Denney
Messages: 430
Registered: January 2004
Karma: 0
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Like most product announcements, it spends so much time saying how good it is that it forgets to say what it is. Have you figured out how it installs, what it does, and how it works?
Rick "with unsatisfied curiosity" Denney
'73 Glacier 230 "Jaws"
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| Re: [GMCnet] Fan Clutches [message #84067 is a reply to message #84062] |
Tue, 11 May 2010 10:37 |
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Tom Lins
Messages: 372
Registered: February 2004
Location: St Augustine, FL
Karma: 1
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| Steven Ferguson wrote on Tue, 11 May 2010 11:22 |
You got that right Rick. I cannot find an application chart to see if
it is even a workable deal for us. A genuine lack of info on this
site.
On Tue, May 11, 2010 at 7:53 AM, Rick Denney <rick@rickdenney.com> wrote:
>
>
> Steven Ferguson wrote on Tue, 11 May 2010 09:26
>> Has anyone ever played around with one of these?
>> http://www.dsuban.com/14-2S-Kit-Masters-2-Speed-Fan-Conversion-Kit-p2694.html
>>
>> I wonder if there's an application that would work for us?
>
>
> Like most product announcements, it spends so much time saying how good it is that it forgets to say what it is. Have you figured out how it installs, what it does, and how it works?
>
> Rick "with unsatisfied curiosity" Denney
> --
> '73 Glacier 230 "Jaws"
> _______________________________________________
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--
Steve Ferguson
'76 EII
Sierra Vista, AZ
Urethane bushing source
www.bdub.net/ferguson/
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This help??
http://www.kit-masters.com/files/file/KitMaster2007.pdf
Tom Lins
St Augustine, FL
77 GM Rear Twin, Dry Bath, 455, Aluminum Radiator Quad-Bag Suspension Solar Panel
Manuals on DVD
YOUTUBE Channel: GMC Dealer Training Tapes
http://www.bdub.net/tomlins/
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| Re: [GMCnet] Fan Clutches [message #84077 is a reply to message #84067] |
Tue, 11 May 2010 12:09 |
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mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
Karma: 0
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The only thing in it that applies to us is that they have Viscous fan clutches and to call Kit Masters for availability.
Everything else is for applications way more heavy duty than we use.... UNLESS you are into some major changes ($$$$).
Interesting though.
Mike Miller -- Hillsboro, OR -- on the Black list
(#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
More Sidekicks than GMC's and a late model Malibu called 'Boo'
http://m000035.blogspot.com
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| Re: [GMCnet] Fan Clutches [message #84079 is a reply to message #84052] |
Tue, 11 May 2010 12:11 |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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We allready have an infinitely adjustable fan clutch that works totaly automaticly. The bimetalic spring adjusts for temp in a continuous variable manner as needed. On big trucks it's different, its' more like very free wheeling, (you can stop it with your hand at idle) or locked up solid. There is a switch on the dash to lock it up in override and most lock it up when you apply the air brakes for added drag. 2 different systems. Don't waste your money.
John Lebetski
Woodstock, IL
77 Eleganza II
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| Re: [GMCnet] Fan Clutches [message #84089 is a reply to message #84079] |
Tue, 11 May 2010 13:55 |
Steven Ferguson
Messages: 3447
Registered: May 2006
Karma: 0
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Senior Member |
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John,
If you have one the works, hang onto it. It seems like the new ones
cycle every 5 miles. I have gone through several now and all behave
exactly the same. This shouldn't be happening with an aluminum
radiator and full shroud.
On Tue, May 11, 2010 at 10:11 AM, John R. Lebetski <gransport@aol.com> wrote:
>
>
> We allready have an infinitely adjustable fan clutch that works totaly automaticly. The bimetalic spring adjusts for temp in a continuous variable manner as needed. On big trucks it's different, its' more like very free wheeling, (you can stop it with your hand at idle) or locked up solid. There is a switch on the dash to lock it up in override and most lock it up when you apply the air brakes for added drag. 2 different systems. Don't waste your money.
> --
> John Lebetski
> Chicago, IL
> 77 Eleganza II
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Steve Ferguson
'76 EII
Sierra Vista, AZ
Urethane bushing source
www.bdub.net/ferguson/
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GMCnet mailing list
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| Re: [GMCnet] Fan Clutches [message #84093 is a reply to message #84089] |
Tue, 11 May 2010 14:26 |
Rick Denney
Messages: 430
Registered: January 2004
Karma: 0
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Senior Member |
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| Steven Ferguson wrote on Tue, 11 May 2010 14:55 |
John,
If you have one the works, hang onto it. It seems like the new ones cycle every 5 miles. I have gone through several now and all behave exactly the same. This shouldn't be happening with an aluminum radiator and full shroud.
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Mine's the same. But we had a conversation about this last fall, as I recall, trying to determine if the aluminum radiator is dumping more heat into the engine commpartment than an undriven fan will allow to pass, causing the hot air to build up in front of the fan, which is where the clutch thermostat is. We wondered if flap vents in the shroud would open up at highway speed and allow ram air to be more effective without the fan being engaged. It sounds good in theory, but we never got past wondering.
Rick "who was going to experiment but then life got more complicated" Denney
'73 Glacier 230 "Jaws"
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| Re: [GMCnet] Fan Clutches [message #84134 is a reply to message #84093] |
Tue, 11 May 2010 19:46 |
Steven Ferguson
Messages: 3447
Registered: May 2006
Karma: 0
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Senior Member |
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Rick,
I have a couple ideas here. I drove our coach with a dead fan clutch
for nearly two years before I discovered it. That alum radiator just
never let the coolant temp get past 205 deg so I figured everything
was working as it should. Once I hit those grades in Poway, CA on
I-15 I was seeing coolant temps around 210-215 IIRC. That really
isn't too serious unless you have to stop at the top of a grade and
have no engagement on the fan clutch. I'm thinking an electric just
might work. Screw the shroud, just mount it to the radiator. That
alum radiator is very stout and even Gene Dotson feels that hanging an
electric fan mounted through the fins wouldn't hurt it. Hayden's best
17" fan moves 1,700 cfm of air on low speed and 2,100 cfm on high. I
see someone posted that Ford has one out there that moves over 5,000
cfm.
Another project and I'm going to spend some serious time on this.
On Tue, May 11, 2010 at 12:26 PM, Rick Denney <rick@rickdenney.com> wrote:
>
>
> Steven Ferguson wrote on Tue, 11 May 2010 14:55
>> John,
>> If you have one the works, hang onto it. It seems like the new ones cycle every 5 miles. I have gone through several now and all behave exactly the same. This shouldn't be happening with an aluminum radiator and full shroud.
>
>
> Mine's the same. But we had a conversation about this last fall, as I recall, trying to determine if the aluminum radiator is dumping more heat into the engine commpartment than an undriven fan will allow to pass, causing the hot air to build up in front of the fan, which is where the clutch thermostat is. We wondered if flap vents in the shroud would open up at highway speed and allow ram air to be more effective without the fan being engaged. It sounds good in theory, but we never got past wondering.
>
> Rick "who was going to experiment but then life got more complicated" Denney
> --
> '73 Glacier 230 "Jaws"
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Steve Ferguson
'76 EII
Sierra Vista, AZ
Urethane bushing source
www.bdub.net/ferguson/
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] Fan Clutches [message #84141 is a reply to message #84052] |
Tue, 11 May 2010 20:59 |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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Senior Member |
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Mine only fully engages after sitting in heat soak traffic or when pulling off the highway and slowing to hit the exit ramp. I doesn't lock/ unlock on steady cruise. I assume it's partly engaged the rest of the time when the AC is on and its hot out. I'd rather have the clutch fan do the work rather than add more load to the alternator on a hot day with an electric fan. I can allready hear the alt whine when the DC refrigerator is on and/or house battery is being charged. Think about the mechanical disadvantage if that small alt pulley had to run the main fan, even without the efficiency losses of going from mechanical to electrical to mechanical. I agree with the theory that the hotter air temp from the alluminum radiator is causing the clutch to cycle. Same theory in the liquid state is that if you add the water wetter drug to the coolant, the exit temp at the neck will be HIGHER as more heat has transfered to the coolant, but the iron block will be cooler. People will say that 'hey this stuff is no good my water temp is higher'. Also, I like the one-way shroud flaps idea (very aircrafty by design) a great project for the 'If I only had more time to try that' department. That GM inner fender splash guard rubber is what strikes me as the perfect stuff to use attached with some industrial staples or stainless hardware and washers.
John Lebetski
Woodstock, IL
77 Eleganza II
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| Re: [GMCnet] Fan Clutches [message #84174 is a reply to message #84141] |
Wed, 12 May 2010 07:28 |
shawnee
Messages: 422
Registered: February 2004
Location: NC
Karma: 0
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Senior Member |
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| JohnL455 wrote on Tue, 11 May 2010 21:59 |
Mine only fully engages after sitting in heat soak traffic or when pulling off the highway and slowing to hit the exit ramp. I doesn't lock/ unlock on steady cruise. I assume it's partly engaged the rest of the time when the AC is on and its hot out. I'd rather have the clutch fan do the work rather than add more load to the alternator on a hot day with an electric fan. I can allready hear the alt whine when the DC refrigerator is on and/or house battery is being charged. Think about the mechanical disadvantage if that small alt pulley had to run the main fan, even without the efficiency losses of going from mechanical to electrical to mechanical. I agree with the theory that the hotter air temp from the alluminum radiator is causing the clutch to cycle.
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John,
I don't think the aluminum radiator is rejecting more heat except on grades. It is more efficient which gives the thermostat better control. The engine is generating the same heat no matter what the radiator is made of. The same amount of gas is used which determines the heat generated.
Gene Dotson
74 Canyonlands
www.bdub.net/Motorhome_Enhancements New Windows and Aluminum Radiators
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