Electric fan on tractor engine?

Ali_Maxxum

Member
Location
Chepstow, Wales
I know there is an option on new Holland T7's for a reversible fan, makes me wonder what type of unit that is..the ones without that have an electronically controlled viscous type unit.

The John Deere 8000 we had had a hydraulic pipe going to the engine fan, had some sort of clutch in it

Yeah same with Case, which I have enquired about. It's Flexxaire which goes through Lynx engineering, £3,500 fitted...... The electronically controlled viscous unit is £150 extra. Does boast better efficiency and fuel savings. Thought it would be worth a punt for £150.
 

Lincsman

Member
Arable Farmer
Location
Lincolnshire
I know there is an option on new Holland T7's for a reversible fan, makes me wonder what type of unit that is..the ones without that have an electronically controlled viscous type unit.

The John Deere 8000 we had had a hydraulic pipe going to the engine fan, had some sort of clutch in it
The reversible Fan on a NH t8** is viscous coupled and rotates the same way all the time, at user predetermined intervals a small air pump rotates the blades to reverse air flow.
 

Timbo

Member
Location
Gods County
how are they driven to give varying output

The rotor is driven at engine speed all the time but the stator rotates inside its housing around either using a spring or computer control to vary output flow, pressure or both by effectively reducing the 'stroke' the pump has just like a hydrostatic drive

So if the oil is cold or at idle / low load they reduce oil pressure, but under high load or rpm can ramp the pressure up just when the bearings need the most lubrication.
 

Speedstar

Member
Location
Scottish Borders
Pros/cons?

Has anyone retro fitted an electric fan to a machine? Or specced a new one with one?

Have always thought they should work more efficiently? Assume great in a car with good continuous air flow on the road but certainly maybe not so with a tractor in the middle of a hot dusty summer.... Wondered about reliability issues, blown fuse, fault wiring, big head ache. Most that can go wrong with normal viscous fan would be a broken belt?

Cheers
Back in the 80's we had problems with a JCb forklift over heating on the silage pit & was very back to stop grass getting in to the rad , so we moved the oil cooler to a different place on the machine & pu a electric fan on it, running all the time & put another electric fan blowing air in the engine rad ads well as the engines own fan , it worked great , never over heated again & had a lot more pushing power with the trans oil being cooler , was just a standard electric set up & battery & was no problem at all , most have done 10,000 + hours like that
 

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Red Tractor drops launch of green farming scheme amid anger from farmers

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As reported in Independent


quote: “Red Tractor has confirmed it is dropping plans to launch its green farming assurance standard in April“

read the TFF thread here: https://thefarmingforum.co.uk/index.php?threads/gfc-was-to-go-ahead-now-not-going-ahead.405234/
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