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I was just going throug my post on "TR98 vs. TR99" and some of you were talking about 2.2 bu vs 1.8 bu/second. I was wondering if a guy could put a larger drive sprocket on the Tr98 and pick up a little.
 

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Just looked on the parts site. The stocker on a 98 is a 16 tooth drive sprocket, while the TR99 (and an optional one for the TR98) has a 19 tooth. The driven is the same, so it should be an easy change indeed. Part # 86578036 or whatever it subs up to.

Might have to do the same.
 

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That should speed it up 19/16 = 1.1875 or almost 19 percent. 1.8 bu per second times 1.1875 equals 2.1375 bu per second. The figures 1.8 and 2.2 have probably been rounded off. I have the TR 99 and the 2.2 rate is not all that fast, I wouldn't want less. It will add a little to the load on the belt. I have had my TR 99 and in four years I have gone through three belts, or about one per year. If you unload on the go as we often do, you are putting it in gear with the engine at full throttle. If the auger is empty it is not too bad but if you have to stop it while unloading, then you have to start it again with the auger full and that is usually when I break the belt.
 
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