boulderado
Colorado
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Joined: 02/11/2004
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I would be interested to hear if anyone has installed a variable speed fan such as a Horton on their DP with a direct-drive fan. I have heard that the direct-drive uses a lot HP to run and I am thinking I could save some $$ in the long run by installing one. What say you?
Knut and Susan FMCA-351422
'06 Winnebago Journey 34H ISB-300
'07 Malibu Maxx w/Blue Ox Aventa II
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Lug_Nut
Newmarket , Ontario, Canada
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Joined: 06/13/2002
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I presume you have a rear rad. If so, I'm not sure a clutch fan would save that much, as the natural flow of air is generally poor on the highway. If, however you could get a varitable fan speed system it would probably help greatly. Mine uses a magnetic varitable speed clutch. The fan drive is driven by a rotating housing containing an electrically charged magnetic field. As the heat increases, so does the power to the magnets. If it exceeds the magnetic slip drive's ability, a lock up clutch is engaged to provide full cooling. It works extremely well.
'07 Newmar Essex 45' ISM 500 4 slides
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v8q
Oviedo, FL
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Joined: 04/11/2005
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I've heard it can cost up to 2000 bucks for this. But I've also read 2 plus mpg increase. Using those numbers it and a gain from 8 to 10 mpg with $4.50 fuel you would save $112.00 every 1000 miles, so about 18,000 miles to recoup the outlay.
I would add 2,000 miles to more that cover the loss of interest if you took the money out if savings. Do your own math on what you expect, but it looks like under 2 years.
The key is how long are you planning on keeping the coach? Is it cost effective for YOU? For me, if I knew I was keeping the coach at least a year I would likely do it, because I'm an engineer and detest inefficiency...
Dave Head
Oviedo FL
95 Foretravel U320C SE
M11, HD4060
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Richard Pelletier
Chesapeake, VA, USA
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Joined: 03/21/2002
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Cummins installed a Horton Clutch Kit on my ISC-330 two years ago at 15,000 miles for $725. I have been very pleased with the results. The majority of the time the fan is on a low speed making the noise level much less. I only notice the higher speed cut in on long hard mountain climbs. The rear radiator stays cleaner much longer. Cummins claims up to 28 hp increase with the kit. I have seen a slight mpg increase plus alittle more power. The tech from Cummins said this addition was the single best thing you could do for the engine. Cummins Mid-States Power Inc. makes a lot of large rallies and will sell and install. Jack Markin was the tech who installed mine. 1-800-777-3691 Money well spent.
2005 40 ft Monco Knight PLQ 4 slides
2002 2500HD Crew Cab 8'bed 4X4
Duramax/Allison (A BIG TOAD)
Richard and Susan
 (3).JPG)
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Sully2
Cincinnati
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Joined: 01/20/2003
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Richard Pelletier wrote:Cummins installed a Horton Clutch Kit on my ISC-330 two years ago at 15,000 miles for $725. I have been very pleased with the results. The majority of the time the fan is on a low speed making the noise level much less. I only notice the higher speed cut in on long hard mountain climbs. The rear radiator stays cleaner much longer. Cummins claims up to 28 hp increase with the kit. I have seen a slight mpg increase plus alittle more power. The tech from Cummins said this addition was the single best thing you could do for the engine. Cummins Mid-States Power Inc. makes a lot of large rallies and will sell and install. Jack Markin was the tech who installed mine. 1-800-777-3691 Money well spent.
I dont see any drastic "MPG" increase...but definitely some additional "HP"..and more never hurt at all
2000 Country Coach Allure; Cummins ISC 330 HP; 71/2 - 8 MPG regardless
2002 Jeep Liberty
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pjsky
Renner SD/Yuma AZ
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Joined: 11/17/2004
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The Horton is NOT a variable speed fan. It is a temperature controlled fan clutch. The fan is either off or on depending on the engine temperature. It takes alot of power to turn the large diesel engine fans. The Horton fan clutch will save fuel(thus reducing operating costs), because the fan will not be turning at all times. I do however question their usefullness on a DP coach, because when going down the road there is only a limited air flow over the engine cooling radiator. Temp controlled fan clutches were designed for semi tractors as they have front mounted radiators, thus great airflow at hiway speeds. Most semis use them, as they are VERY cost effective for them.
Paul
2005 Coachmen Sportscoach Elite 401TS
2006 Pontiac Torrent on a dolly
Eat a live toad in the morning and nothing worse will happen to you for the rest of the day.
PAUL AND JAN
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avidude
Southern California
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Joined: 10/21/2006
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I just got a complete bill of material to do this from Freightliner for my XC-S chassis, Cat C7. The parts come to $875. My mechanic says 5 hrs of work. I'm going to try it.
Ted
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'07 Bounder Diesel 38S
Cat C7 300hp, Allison 3000MH
Tow: '06 GMC Yukon
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Jim112
California
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Joined: 07/13/2005
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I just added the Horton clutch to our Monaco Diplomat. I only wish I did it sooner. I have seen about a 3/4 mpg diffrence (7.8 to 8.5 on the last trip) and a quieter ride. It took about three hours to do the install myself. The cost was just under $700 delivered. As for power increases with the cummins 400 does it matter?
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