tz beraing

[stockbutfast]

Just trying top get peoples input on someting. If the TZ bearing is such a good bearing why not just run two of them instead of the tz and maxload combination.

[trickedcarbine]

well, this is only my opinion based on my experience and the knowledge that has been passed down from reputable banshee veterans. the TZ is a kick ass bearing, in fact the cylindrical roller bearing is probably the stoutest bearing designs out there. However there times when it"s use must be evaluated. Normally in a smaller motor it is not necassary, and the additional cost can be spent else where by just using a max load on the crank side. In higher HP bikes many guys jump right on the TZ bearing, but typically a Maxload will suffice unless the bike makes monster power. The thing many people forget is that the TZ bearing needs to be paired with straight cut primaries, wich only adds to the cost. Some may argue that view, but think physics for a second. With the helical gears there is a tendancy for the crank to side load. Now with a ball bearing setup like a Maxload the balls will just adjust torsionally and roll through the flex. With the Straight edged cylindrical rollers of the TZ, the load is applied to the sides of the roller, wich in turn causes side wear and/or even outer race stretching. Of course the abount of wear is minute and the race stretch is minimal, but over time it adds up to loose tolerances, or roller debris in the bearing, and the outcome of such a situation is anything but cheap unless caught by preventative maintainence.