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Discussion Starter · #1 ·
My TR86 would go 4.6 MPH in second gear. My TR99 goes 3.8 MPH. My TR86 would go 8.6 MPH in third gear. My TR99 goes 6.9 MPH. My TR86 would go 20 MPH in fourth gear. My TR99 goes 15 MPH. Why are the bigger machines so much slower? Other brands of combines have a higher road speed. Is there anything that can be done to increase the speeds on this combine?
 

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My TR 96 1987 model with a 3208 cat can go faster in 3rd gear than my cousins's TR 98 in 4th gear !! Maybe its that the V8 cat at full throttle is at least 200 rpm faster than the ford V6's.
 

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Could be calibration for the speed, tire size, etc. Have they actually run down the road together to make sure the speed calibration is correct?
 

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That is interesting! Maybe someone played with the hydro on the TR86. Mine tops out at 4.6 in 2nd, 6.8 in 3rd and about 15 in 4th and our TR97 is just about 0.5 mph faster in each gear.
 

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Discussion Starter · #5 ·
My TR 86 matched the speeds listed in the manual. My TR 99 matches the speeds listed in the manual. It has the proper calibration settings for my tires. The speeds are right and match up with my CIH MX 240 with radar controlled speed indicator. I have talked to others and it just seems that the larger machine is made to operate slower in all gears. I just don't understand why since other companies operate their bigger machines faster.
 

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The easiest and most accurate way to check speed these days is a hand held GPS receiver.
I've checked all my speedometers and odometers on all my vehicles/equipment.
Sometimes you get a surprise like a 97 ford pick-up that reads 8% fast.


Don
 

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Our TR99 tops out the same 15-16mph.
We used to have a Gleaner that could hit 21mph. That was actually too fast. The steering started to become unstable around 18-19mph.
 

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The CRs do 21 or 22. Our TR98 does 15.4. An old TR85 we had did 21. The 98's high idle is 2250, the 85's was 2800. Probably makes a pretty large difference since they were 1st designed with 3208s and then the other engines were put in afterwards. Not sure where they would have changed pulley sizes -on the engine and I'm back to square one. On the thresher clutch and it makes sense.

I bet your 99 goes way faster working in the field though.
 
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