hey fella's i just set up some toy diffs in a mates sami, just wondering what some of the toy diff equiped sami's are running as a driveshaft upgrade to help eliminate some of the drive angle issues caused by the zook transfer/ centre pumkin combo. everything seems to work spot on except the vibrations- i was aware this would happen and thought of running a toy double cardinal shaft, but as they can cause as many problems as they solve i would like to find out what other ways people have solved this problem before going down that track.
cheers.:beer:

you mean double 'cardan'? well, honestly I haven't heard of problems with cv joints unless you try to get more angle out of it than is possible.
on that setup, I'd run a cv joint at the t-case and the pinion. but, you need to measure your angles.
. according to the pros at the driveshaft shops that write articles for the magazines(tom woods, etc....) a driveshaft's operating angle is limited by the speed of the driveshaft.
. to run a shaft at near 5000 rpm's you can't have more than 2-3 degrees on a u-joint. on a cv joint, that equates to about 5 degrees max. find out what angle you're trying to get, and divide that in half, that's what each u-joint will have to deal with. you can call any driveshaft shop you find in the back of a 4wd mag and they should be able to tell you what angle is for what speed. I know the max speed and angle, but I'm not sure exactly what the rest of the chart is.
. hmmm what problems exactly to cv joints create?