Super-FlexTM Universal joint
|Until now, if you needed to run a higher
angle in your drive shaft than conventional parts would allow, the only choice
was to use Toyota mini-truck components. These were basic light weight parts
designed for 1/4 & 1/2 ton vehicles and would not stand up to the demands of to
days high horsepower rock crawlers.
The "Super-Flex" universal joint was not designed to be a "cure all", but rather specifically to solve a binding problem that one may incur under situations such as full axle droop and spring wrap. Situations like a front drive shaft, where you have a lot of lift and have also installed buggy springs or revolver shackles in conjunction with your shackle reversal.
We have never made any secret of the fact that this joint does cause some vibration problems. (In fact we will not even sell it unless the customer is aware of its limitations). This is due to the introduction of the 3rd plane of operation, which will cause the drive shaft to run eccentric. The amount of eccentricity is a function of how steep the drive shaft runs to begin with.
Through a zero degree angle there is no
eccentricity and as the angle increases the amount of
eccentricity will increase. The amount of vibration you will
experience will be factors of the angle and the weight of the
drive shaft. In theory if your drive shaft weighed nothing there
would be no vibration forces as a result of running the drive
shaft running eccentric.
Alternatively, if this is not the kind of money and effort you want to spend and the drive shaft is not going to be turning at high speeds (locking hubs or other disconnect), I think the "Super-flex" universal joint is a very good solution. Certainly it is the simplest and most cost effective solution to a binding drive shaft problem in many situations.
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