With all my years of experience in drive train , one of the most misunderstood things by most people is understanding DRIVESHAFT angle and what it's effects are on a vehicle.
I will try to make this as simple as possible: as a DRIVESHAFT turns at a given angle, the joint moves in a forward to back motion. The first spot is the trans.angle and the second is the shaft. This movement kind of makes an X on paper if you were to map it out. Quite simply, if the X or angle measurement on the top, isn't the same as the X or angle measurement on the bottom, you will end up with a bicycle crank type of movement. In other words, one movement will not counteract the other movement.
look at the chart below
The picture above shows a simple driveline and how its angles are laid out. This is a text book lay out. If you can achieve angles like this, please do, but remember, its not a perfect world and there are different factors to deal with when building a car. With all of the vehicle's I have been under, it never ceases to amaze me : what should work, doesn't and what should not work, does. The point I'm trying to make is this : before you call us for advice, try to get the angles as close as possible, then, if you are experiencing a problem, and don't know what to do, contact us and we will be happy to help you as much as we can.
