SWING ARM SPINDLE

MFB said:

This gravity feed system makes swingarm oiling easy.
Original reinforcing mod. was done during basket case rebuild circa 1983.
Oiling system added circa 2013.
The tube acts as a reservoir. Just don't add too much oil like I did.

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Nice reinforcement job however welded in the wrong place. Lateral forces will wear out the front and the rear of the spindle tube not the top and bottom of the tube so it should have been welded 90 degrees backwards to secure the spindle by the two bolts. Also I have seen some ugly butchering, IMHO the best solution is using the steel Kegler clamps as these support the spindle tube all around and will secure the spindle just by tightening the clamps alone (the small perpendicular bolts are primarily there to keep the spindle in place).

pantah_good said:

acadian said:

or get these and never have to worry about oiling/leakage again... 3 seasons in and mine are still rock solid, no play, and swingarm moves freely
http://www.ebay.ca/itm/VINTAGE-Norton-C ... pT&vxp=mtr

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Those look interesting, but searching for "PETECOMBAT" is a dead end. Are those still manufactured somewhere? Are those also suitable for a '72 750?

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He may have stopped making them, he did offer 850 and 750 versions, lucky I have a back up 750 set for my next build

Here is a photo of yet another locking bolt solution. My original tube was ovalized so I cut it out And replaced it with a more substantial piece.

Taking the center bolt out or even just loosening it is a good idea if using a pressurized oil can. I blew the far end cap off at a young age. As mentioned fill slowly until it starts coming out the bolt hole.

Also want to mention that there is a Riders Manual which describes basic maintenance. In some cases there are better explanations than in the shop manual. These came with every new bike.

Russ