<font color=blue>"have you ever felt how hot the brushog gearbox gets?"</font color=blue>
Yes, it hardly gets warm at all, even when cutting heavy stuff.
<font color=blue>"Just curious, what's the HP rating of the brush hog vs the tractor?"</font color=blue>
The tractor is 49 HP and the brush hog has a 95 HP gearbox. It is a heavy duty 6' Howse but I have noticed the tractor running hot on a light one that I have too.
Bird,
Although I didn't have a temperature probe to check the temperature, I used a very scientific method. I felt of the tractor and then found a hot piece of equipment at work (a transformer) that felt about the same and used one of those infrared guns that you point at something to get the temperature. It read 180 degrees.
So you see my calculations could be off just a wee bit. I won't be doing anything to really work it hard again till summer so I am going to locate a thermometer between now and then that I can actually check the temperature of the fluid with and go from there.
Thanks to all of ya'll for the help. Kubmech, I will probably go ahead and adjust the position control linkage just a tad so that I can't make it come off relief when it's all the way back. I usually travel about 3 miles with the cutter raised up before I do much work so if it isn't coming off relief it could get pretty hot before I even get started. I'll check that too.
TBone