Odd Driveshaft conversion

[CN Plus2 Gary]

Hello,
I am working my way through a fair few jobs (and problems) and am just sorting the rear disks and drive shafts. Does anyone know who previously carried out the modifications in my pictures?
I thought some of you may find it interesting.
My car has not been on the road since the 90’s and the previous owner purchased from Paul Matty (on log book) so they may have done the work.
I am 3 years in and very slowly plodding on!
Gary

[Craig Elliott]

I don't think that is modified - it looks like a standard anti-flail driveshaft. The inner and outer parts of the final drive should have a bar that goes through the middle of the doughnuts into the tube. Then if the doughnut fails the driveshaft is held (roughly) in line.

[pharriso]

I don't think that is modified - it looks like a standard anti-flail driveshaft.

+1

[CN Plus2 Gary]

Thanks Craig,
Sorry, just a bit new and uneducated on the variations.
Had never noticed them reading and researching upgrades and repairs.
Thanks
Gary

[rgh0]

Hi Gary - there is not such thing as a dumb question about all the many and varied and undocumented Lotus variations. Thats what keeps this site such an interesting place and generates lots of debate
Welcome and hope your making good progress sorting out your Plus 2

cheers
Rohan

[Matt Elan]

And of course the anti flail driveshafts aren't listed or illustrated in the parts list. Fitted in the early 70s when rotoflex failures started to be a problem.

[CN Plus2 Gary]

Thanks for the understanding everyone.
Currently working on nightmare rear caliper issues ( I did know I was purchasing a can of worms). One seized piston, one broken bleed nipple and one badly drilled nipple. My glass is half full and all will be perfect.
I think!
Thanks
Gary

[Bigbaldybloke]

Some diff output shafts also had a length of steel about 1/2" dia and a couple of inches long welded into the centre of the three arms on the shaft to try to protect the shaft flailing around if the rubber coupling failed. Maybe designed to fit into the tube shown in the picture above? My car had the pins on the diff output shafts but no tubes on the shaft as in the picture above. All gone now, CV conversion fitted!

[rgh0]

Some diff output shafts also had a length of steel about 1/2" dia and a couple of inches long welded into the centre of the three arms on the shaft to try to protect the shaft flailing around if the rubber coupling failed. Maybe designed to fit into the tube shown in the picture above? My car had the pins on the diff output shafts but no tubes on the shaft as in the picture above. All gone now, CV conversion fitted!

Yes the pins in the centre of the donut arms from diff and hub matched and went into the tubes on the centre of shaft arm to try to stop the flailing when a donut failed. Unfortunately the pins were not strong enough and sheared off when a dontut failed. (been there done that ) thats what prompted me into CV's on my PLus 2 more around 35 years ago now. I noticed yesterday that i still have the old plus 2 half shafts in my collection of spares just in case the next owner in about another 20 years is an originality fanatic and wants to restore the donuts

cheers
Rohan

[Bigbaldybloke]

Yep, I have a pair of the shafts in a corner of the garage complete with donuts still attached for the same reason.