The OEM axle end did not appear to lend itself to adaptation to the solid axle pinion (on the Jeep axle).
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I measured the outboard spline with the hope that it would be a standard cv. The spline measured close to 27mm and has 33 splines. Upon research, I found a cv that happened to have that spline specification.
Lobro CV Joint, 6 Bolt, 78mm Bolt Circle, 33 Spline - Pegasus Auto Racing Supplies
Our CV joints fit Hewland and Webster Mk 9, Staffs, Formula Mazda, and some LD200 racing gearboxes. Available in Standard or high-torque Heavy-Duty versions.
I ordered one and tried it out. It did press on with a light press, but the splines did not seem quite right. (Also, some modification would have to be made even if this route was chosen, as the snap ring groove landed within the cv splines.)
Ultimately, I decided this route was not going to work for me as the axle lengths were too far from what I needed anyways (not to mention the questionable spline compatibility).
I was able to have a custom adapter made out of hardened 4340 that reuses all the pieces of the factory tripod joint, even the factory cv boot. I plan the preheat the adapter and the driveshaft tube before welding to ensure a good weld. The adapter was made for use with 2" O.D. 0.120" wall driveshaft tubing so that it will work with the 1310 double Cardan joint I have for the other end of the driveshaft.
Thanks! I plan to install a spool once I get the motor working good in the stock configuration. I kept the stock gearing and bought super high axle gears (2.73:1).
Here’s my Jeep build thread:
Jeep Willys Tesla Build
I am converting my grandfather's M38A1 Jeep Willys to electric (as well as restoring the jeep). Some features include: Tesla Model 3 drive unit; narrowed Dana 44 axles from a 1975 Jeep Wagoneer; Jeep YJ leaf spring conversion; Orion 2 BMS 132s; and, a Chevy Volt battery pack. I am just...
www.diyelectriccar.com
I'm putting together a similar setup and I contacted The Driveshaft Shop to get a flange adapter made : <[email protected]>
I had to send them the Tesla tripod joint cup and flange that I wanted to use, but they could probably do the same with a CV yoke instead of a flange. Cost about $300 in labor for two of them:
![Wheel Automotive tire Gear Motor vehicle Bicycle part]()
I had to send them the Tesla tripod joint cup and flange that I wanted to use, but they could probably do the same with a CV yoke instead of a flange. Cost about $300 in labor for two of them:
In case this isn't clear, a double Cardan type CV joint has something (typically a spherical joint) in the middle to keep the two sides of the joint (the two Cardan joints) at the same angle... and of course correct phasing is ensured by the one-piece centre section which acts as one yoke for each of the two joints (Spicer calls it the "center yoke"). A example:
Dana Spicer 920648 Double Cardan CV Head
I assume that this is the type of joint being used here, in its intended application in a propeller shaft.
Yes, exactly!In case this isn't clear, a double Cardan type CV joint has something (typically a spherical joint) in the middle to keep the two sides of the joint (the two Cardan joints) at the same angle... and of course correct phasing is ensured by the one-piece centre section which acts as one yoke for each of the two joints (Spicer calls it the "center yoke"). A example:
Dana Spicer 920648 Double Cardan CV Head
I assume that this is the type of joint being used here, in its intended application in a propeller shaft.
The version I used is:
I tested the driveshaft--on the car--up to 1,700 rpm driveshaft rpm. The car was up on jack stands for the test. (Maximum driveshaft rpm in my application will be right around 2,000 rpm.) The driveshaft ran really smooth with no abnormal noises or vibrations. Under load: the car has only been driven up to 10 mph, but there were no abnormal noises or vibrations. More testing to follow.
After a lot of searching I discovered that some of the 1995-1997 Jeep Grand Cherokees used a front drive shaft with a double cardan joint on one end and a Rzeppa cv on the other end:
Crown Automotive 52099260 Front Drive Shaft for 96-98 Jeep Grand Cherokee ZJ with 4.0L Engine & NP249 Transfer Case
33.50" Collapsed Length.
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