GeorgiaHybrid Posted December 6, 2016 Report Share Posted December 6, 2016 I think I will just stick with my Horton 2 speed fan. 2017 Kenworth T6802015 DRV 38RSSA Elite Suites2016 Smart Prime Link to comment Share on other sites More sharing options...
rickeieio Posted December 6, 2016 Report Share Posted December 6, 2016 I remember reading somewhere that when the cruise kicks the fan in on a hill, it's equivalent to 20 hp of drag on the motor, Sooooooo, how many electric fans would it take to supply that much air movement? I sometimes run equipment in a dirty environment. On some pieces, I blow the radiator out with compressed air and/or a garden hose, daily. How often do y'all wash out your radiator? Try it once, and watch what comes out. If a section of the core won't pass water, it ain't cooling either. KW T-680, POPEMOBILE Newmar X-Aire, VATICAN Lots of old motorcycles, Moto Guzzi Griso and Spyder F3 currently in the front row Young enough to play in the dirt as a retired farmer. contact me at rickeieio1@comcast.net Link to comment Share on other sites More sharing options...
GeorgiaHybrid Posted December 6, 2016 Report Share Posted December 6, 2016 According to Cummins, the ISX uses the following HP at these rpm's 1100 10 1300 17 1500 26 1700 37 1900 52 2100 70 Lots of good info on running an economical truck from Cummins can be found here: https://cumminsengines.com/uploads/docs/cummins_secrets_of_better_fuel_economy.pdf 2017 Kenworth T6802015 DRV 38RSSA Elite Suites2016 Smart Prime Link to comment Share on other sites More sharing options...
Alie&Jim's Carrilite Posted December 6, 2016 Report Share Posted December 6, 2016 In the Dodge diesel world, guys were using the electric fans out of a Ford Taraus with success. Alie & Jim + 8 paws 2017 DRV Memphis BART- 1998 Volvo 610 Lil'ole 6cyl Cummins Link to comment Share on other sites More sharing options...
rickeieio Posted December 7, 2016 Report Share Posted December 7, 2016 The point I was trying to make, nicely verified by Georgia's info, is that a large engine needs lots of air to cool it. Running down the road, much of that air passes through by it's own accord. But how many electric fans have a motor that will move as much as the original? If it would work, the OTR guys would be doing it already. KW T-680, POPEMOBILE Newmar X-Aire, VATICAN Lots of old motorcycles, Moto Guzzi Griso and Spyder F3 currently in the front row Young enough to play in the dirt as a retired farmer. contact me at rickeieio1@comcast.net Link to comment Share on other sites More sharing options...
Scrap Posted December 7, 2016 Report Share Posted December 7, 2016 It takes 20,000-25,000 CFM, or 9 fans. They need to be 9 flat fans to keep it laminar as they can't share air so you need to use all different sizes to keep your array flat but still give full radiator coverage. They need to be uniformly placed and neighboring fans need to talk to each other so they do not develop large temp gradients relative to ambient or it'll stretch your rad apart. If you run them all on/off together or even in rows of 3 together you need to switch and wire for 100A, which isn't always cheap. It'll run about the same temp differentials as you see today. If you can control all fans independently you can do it under 60A and you'll actually see a rock steady coolant temp. It is pretty impressive. You also need to get engine data into your controller so you can catch CAC temp and try to predict EGR rate of change. If you don't predict/pre-cool for an EGR spurt coming on a lot of times you are sunk before you even get them ramped up. Fun stuff and played with it many ways, but I don't think it's time will come until a truck body change forces it. The 2 spd is what we've had for the last few years and the HD viscous will probably be the next thing up. But you Volvo guys have had the opportunity to order a truck with viscous for a good 6 years now I think? I don't think it really took off for some reason though. And ain't no one can blow chaff out of a Deere radiator like Scrap can!! It friggen sucks actually...... Link to comment Share on other sites More sharing options...
Dollytrolley Posted December 7, 2016 Report Share Posted December 7, 2016 It takes 20,000-25,000 CFM, or 9 fans. They need to be 9 flat fans to keep it laminar as they can't share air so you need to use all different sizes to keep your array flat but still give full radiator coverage. They need to be uniformly placed and neighboring fans need to talk to each other so they do not develop large temp gradients relative to ambient or it'll stretch your rad apart. If you run them all on/off together or even in rows of 3 together you need to switch and wire for 100A, which isn't always cheap. It'll run about the same temp differentials as you see today. If you can control all fans independently you can do it under 60A and you'll actually see a rock steady coolant temp. It is pretty impressive. You also need to get engine data into your controller so you can catch CAC temp and try to predict EGR rate of change. If you don't predict/pre-cool for an EGR spurt coming on a lot of times you are sunk before you even get them ramped up. Fun stuff and played with it many ways, but I don't think it's time will come until a truck body change forces it. The 2 spd is what we've had for the last few years and the HD viscous will probably be the next thing up. But you Volvo guys have had the opportunity to order a truck with viscous for a good 6 years now I think? I don't think it really took off for some reason though. And ain't no one can blow chaff out of a Deere radiator like Scrap can!! It friggen sucks actually...... Shucks Scrap, you left out the stone-age shutterstats on the old needle-nose KWoppers ..... just bump into a bull elk at 60 mph and you will be out there with your channellock pliers for least a case or two of beer getting then straight enough to open and close.....and oh the sound of that straight drive fan when all those shutters opened on a log hot pull. Shutters worked good on a -40f day and $0.12 gal/diesel..... Drive on.....(shiver my shutters) 97 Freightshaker Century Cummins M11-370 / 1350 /10 spd / 3:08 /tandem/ 20ft Garage/ 30 ft Curtis Dune toybox with a removable horse-haul-module to transport Dolly-The-Painthorse to horse camps and trail heads all over the Western U S Link to comment Share on other sites More sharing options...
Scrap Posted February 24, 2018 Report Share Posted February 24, 2018 Purdy! Click For Full-Size Image Link to comment Share on other sites More sharing options...
noteven Posted February 25, 2018 Report Share Posted February 25, 2018 Hi Scrap - That is purdy - bet it is quieter than the big ducted fan... ... one trip to an undisclosed location I saw an engine with all dc driven equipment on the front of the engine. Is that still being pursued? "Are we there yet?" asked no motorcycle rider, ever. Link to comment Share on other sites More sharing options...
beemergary Posted February 25, 2018 Report Share Posted February 25, 2018 Don't make um like they use to. My 84 Pete running two AC's on a 90 degree day won't turn on the fan pulling 12,000 #. If I had a leak would get out some vise grips or clamp to get home and fix it myself. Ol girl will hold air for a week so if your not hitting brakes the compressor is not kicking on. My fan engages by applying air. Link to comment Share on other sites More sharing options...
Scrap Posted February 25, 2018 Report Share Posted February 25, 2018 It sounds like a city bus. DC FEAD is one of the things still in the maybe hopper. You're right, I wussed out on electric water pump as it is the only thing left. Three pulleys and two tensioners just for a little water pump. That's one of the Near Zero CNG's which is pretty risky in the cooling department, so baby steps. She's a hot one! Yea, I've got an '86 and an '88 that are pretty darn good ol trucks. Grease em, tighten v-belts, and adjust brakes every Sunday and they are good to go. Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.