Does anybody have this? Do we need it?

[flat-v8]

This is an old original item, listed on Ebay, I just pulled my torque tube, rear end & everything. When sliding off the speedo gear & ring clip, I didn't see this Safety spring thingy, Do I need this item, does anybody else use it?

 

[Karl Wolf]

I would like to...
I find myself trying to think of a drive shaft coupler pin that doesn't send pieces into the pinion bearings when it gets broken... So, get it , use it... If you have spares- I would buy.
Karl

 

[Old Henry]

Seems like that band around one side of the drive shaft would make it noticeably out of balance and cause a vibration. The spring seems like a good idea.

 

[hotcoupe]

they are on the auction site currently, i suspect they wont last long. i bought one of each.
tom

 

[DavidG]

Karl,

This is for the other end of the drive shaft, not the pinion end (per the illustration on the box).

Bob,

You're right!

Karl,

Sorry for the confusion.

 

[Bob C]

David, look at the center picture closer. The pin goes at the pinion end and the
spring goes at the u-joint end

 

[Kube]

I have sold a bunch of these. I really could never see a true purpose for them.
I have disassembled cars that had one of the pins missed from the factory. In other words, there never was a pin in place.

 

[Gary Tosel]

I bought one of these on Ebay and I also have one installed in my 36 Ford 5W Coupe. I do not believe that small clip would have any impact of balance of the coupling and drive shaft. The coupling can be installed with a new pin and peened on the end without this kit.

 

[flat-v8]

I went ahead and bought one, might use it & might not. I think the spring up at the Ujoint keeps the drive shaft from walking out a little, and putting pressure on the other end at the coupling. I just took mine apart and the coupling pin on the drive shaft spline was gone, the pieces were way down inside the torque tube, so maybe it's a good idea! he has 4 more left for solid shaft.

 

[JM 35 Sedan]

Wouldn't you need two of those pin clips for your drive shaft to pinion coupling? I think stock pins properly peened at the ends will work just fine.

 

[Mart]

I think the idea is that the pin is undersize, and the clip helps to stop it falling out. The spring goes at the front to keep everything in compression to stop the rattles. If there is any wear in the splines most pins just fail and the pieces fall out and make a noise.

Or something like that - just guessing really.

Mart

 

[Kube]

I think the idea is that the pin is undersize, and the clip helps to stop it falling out. The spring goes at the front to keep everything in compression to stop the rattles. If there is any wear in the splines most pins just fail and the pieces fall out and make a noise.

Or something like that - just guessing really.

Mart

*Good and very accurate "guess" other than the clip location.
These pins were in no way meant to repair a worn spline. They were intended as an easy replacement for a mechanic replacing the coupling and / or drive shaft and / or pinion gear.
*The original pin was designed to keep the coupling in place parallel to the drive shaft. It had very little torsional strength and would have been sheared long before the splines became very worn.