Having read a few posts on forums regarding the dangers of dismantling the sprung hub, and bearing in mind the warning cast on the casing, I made this jig based on plans contained in a Triumph maintenance booklet I found on a forum. Fabricated from bits and pieces I had lying about..including an old bed frame..... Worked a treat and allowed the sprung hub to be safely dismantled and reassembled.
If anyone else has managed to dismantle one of these I would be interested in how you went about making replacements for the rubber buffers.
Everything was in good shape with very little wear on the sliding parts. I cleaned it all up for the pics but it was full of graphite grease. Only issue was the rubber buffer located at each end of the sliding block, these cusion contact between the block and the end plates on full compression, these had deteriorated because of the grease swelling and becoming soft. I am going to ry and make some more out of oil resistant rubber sheet.
The grease is to lubricate the sliding part of the hub where it bears on the alluminium case so it needs to contain something like graphite or molybedium which provides low friction for slow moving parts. I don't know whether you can get a silicone based grease with such aditives.
I've ridden a couple of bikes with sprung hubs and also watched them from behind going down the road. I can't imagine that any of you would throw a leg of a sprung hub bike if you's seen what I've seen. Talk about a hula dance....
Anyway, strong work and kudos for doing the dangerous deed.
I'd rather risk my kidneys on a rigid bike with sprung seat than ride one of those things.
Besides, the main idea of this contraption was to get rid of the sprung seat in favor of a dual seat so you could ride with someone on the back in more comfort. From my experience you do need two people on the bike before the thing actually starts to move, at least in the vertical direction.
Good luck. Bill
Bikes 1974 Commando 1985 Honda Nighthawk 650 1957 Thunderbird/T110 "Flying Tiger" Antique Fans: Loads of Emersons (Two six wingers) plus gyros and orbiters.