Does anyone have details of the telescopic drive unit so that I can make one ? e.g. close up pictures/dimensions/etc would be brilliant. I have the hub gearbox fitted so only need the tubular section details.Any help would be appreciated.
The telescopic unit appears every now and then on Ebay. I think I paid mine some 136 € plus 5 for the clamps. For that price I wouldn't start making one...
Hi Barry,Main tube is 180 mm lo,g,18 mm diameter. Extension tube is 140 mm long, 7 mm diameterDirk
Barry,,,,,,, I don't own those parts pictured anymore,,,,,, one of our forum members does. I never did take the tube apart to look inside. The lower shaft had a slot in it for maybe a cotter pin connection by gear box ? Why not just have a cable made and go direct from gauge to gear box and save some headaches. Function over period correctness ……...
Sent: Sun, Nov 11, 2018 9:42 am
Tried to take it apart but that didn't go/ Looks like it has been pressed together?On the bottom there is a metal part with a nylon insert. Behind the top is a brass(?) plunjer where the sliding is happening. For a 1 mm wall thickness tube it is quite heavy.µ
I would expect to find either a sliding hex or square drive coupling in there. Sourcing small hex or square bar stock is easy enough but do you have a way to broach the female side?
Hi Dirk. Thanks mate, I didn't expect you to strip it, the internal drive must be two parts to allow the telescopic movement, I suspect the nylon bit you can see is probably a bearing with a nylon seal. As there doesn't appear to be a drive slot of any kind in the inner tube along its length it must be in the upper drive shaft. I wish I had x-ray eyes !! The extra pics will help a lot.
Well don’t forget, the broaching is going to have to be 3-4” deep. I don’t know what the fork travel is but it will have to be at least that much.
Naked tube is 170 mm long,the top part 23 mm with 10mm thread. The bottom part is 10 mm. The 7 mm tube is 14 cm extended.
Does anyone have details of the telescopic drive unit so that I can make one ? e.g. close up pictures/dimensions/etc would be brilliant. I have the hub gearbox fitted so only need the tubular section details.Any help would be appreciated.I don't know if any owners of Airone's would be interested in sets of the original material cork rear damper discs, ( not composite copies) they are just under 3mm thick. I have made the tooling to produce them and tested on my Airone and they work very well. About £19 a set plus postage, which should be very little due to the weight/size. A set is 12 pieces, eight large ones and four small ones for the ends.My Airone had mainly hardboard ones which were in poor condition hence the tooling. Will take some pictures if there is any interest.I am not a dealer/shop/sellar etc. I just thought it might help other restorers, if not, no worries.Dont forget the speedo drive info please.RegardsBarry