Where to start??????????


OK--its a commonly accepted assumptionthat the theory of the presumed conditions where maybe written out by an graduate engineer with a law degree so the detailed suggested guidelines would answer the political corrected papers that have been exchange bewtween the gov dept of trans and the justice department tp arrive at a threshold of general public searching the internet could then post repeatedly in threads plus have back up (in theory) on small business ads that pop up on a google search------------


A few items---rules of thumb??????


The suspension doesn't raise and lower the tire,rear axle, pinion-they stay basicly same distance from the planet EARTH!!!!!!!!!


Most people didn't have these problems until they got a magnetic angle finder


The idea that you mount the engine so the carb is level is a false assumpsion


The angle of the trans output shaft to the GROUND (planet) is irrelavent


The angle of the pinion shaft to the GROUND (planet) is irrelavent


However, the angles of those two shafts to the driveshaht tube is RELAVANT


The pinion may twist upwards a minor amount, but is not a factor if the suspension mounting points are close tolerant


The travel of the body up and down from the PLANET will change the angles of the shafts to the drive shaft------this angle change ideally should be less than 3 degrees----------


The angle that the u joint people discuss ( 1-3 ) is so that the needles in the u joint caps rotate to spread grease and wear to eliminate the needle pounding noutches and failing


This angle in lots of oem designs is addressed AND maintained by slight offset of crankshaft to pinion shaft centerlines


IN STREET RODS----we have progressed blindly down a lane getting installs of multispeed overdrive lengthy transmissions which then ends up with a very short drive shaft which then multiplies \the incidence of these extreme angles profounded by the prepounderance of some dude selling driveshafts over the internet---------the original vehicles that these transmissions come out of have because of length, in order to reduve the drive shaft unit length,have severely lengthened the trans tail shaft housings, which in turn , as a concequence of bottom line engineering then passed on to the aftermarket hobbists who want a short wb hot rod but want to get rid of the old scholl torque tube not must because of ordering parts online totally screw up a few basics of vehicular drive line engineering with the commonly mistaken idea that if they read it on the net, it must be true.