I have a Red Devil about 1984 to 1986 with a Kaw. The rear suspension has been updated to a 4 link with a panhard bar. In addition there is a belt tensioner bar on the outside right side, it has a 1" bearing on the jackshaft and a 1-1/4" bearing on the axle. The tensioner bar as configured also absorbs bending loads on the jack shaft. since the drive sheave is cantilevered about 3-1/2" to the right of the right jackshaft support bearing. My question is "is the tensioner bar necessary or can it be eliminated. Calculations indicate the bending load on the jackshaft is not excessive, however start-up shock loads, such as in autocross, are hard to estimate. What's the current practice.
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