I'm not sure how I got there, but I found this in
a Pelican Parts thread. Probably an expensive part:
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The rubber doughnut (called a guibo) is a high durometer elastomeric casting with metal inserts. They work the same as a U-Joint but not like a U/Slip Joint combo. German cars such as Benz have supplied them for years on productions cars. Primary benefit on vehicles that have drivetrain misalignment such as a high axel angle to stub axel plane. They are also good for high vibration and high shock applications as they give and may save transmission and differential gears from sustaining damage in high HP applications.
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Very interesting. Thank you.
It looks similar to the "cush drive" in a street motorcycles rear hub.
So is the idea that this'll give before the trans, or just to take up some of the shock before it gets further into the drive train?
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Possibly a good choice to mate the Toyota flange to an arbitrary axle? Or are the axles not subject to shock loads that clutches succumb to?