Three Section Telescopic Driveshaft??? I have two gearboxes I need to connect. In operation they will move laterally in relation to each other. They move in one plane only (no offset or angular movement). The present setup just uses a two part driveshave with a U-Joint at each end to allow for any slight movement caused by flex in the machine's frame. This shaft allows for movement of the gearboxes of about 8 inches. Here is the problem. I need movement of 17 inches and it has to be a range of 23" to 40". So ANY length two part driveshaft will not work. (To reach 40" it would be too long to collapse back down to 23") Confused? Just picture two gearboxes sitting next to each other and a driveshaft connecting them. I need to be able to push them together until the driveshaft is collasped to 23". Then be able to move them apart until the driveshaft is 40" extended. So, where can I find or how can I build a 3 part driveshaft that can telescope down really short (23") AND extend really long (40")? Is this possible? What problems would this have? HP is about 150, RPM is 1500. There is no need for CV Joint, UJoints are fine. Everybody at the Driveshaft Shops look at me like I'm a nut!