A dog clutch is the most simple of devices. it is just two castelated pieces. One attached to the "driven" portion, the other slides on a splined shaft and engages the castelations on the driven component.
They are used in extensively in ski boats. Care would need to be taken to ensure the torque loading is within the working tollerances of the clutch. Dog clutches have only two positions - Engaged or Disengaged. Another device needs to be employed to provide a smooth transition from rest to running. Most times I have seen an automatic transmission used, but I think a fantastic idea would be to use hydrolics. A pump (Kalzonian style) in place of the auto trans, and a motor on the winch drum shaft. Hydrolics allow pressure adjustment to limit the "pull" on the wire, reducing the possibility of over stressing the aircraft, but *not* taking the place of the weaklink Using hydrolics means that the powerplant and the cabin are completely disassociated from the drums (except for the hydrolic hose!) At one stage I did have some initial drawings of a multi-drum design, but in a clean up of my c:\junk directory, it dissapeared. Regards, Phill Glasson Processing Manager - Asia-Pac p +61 2 60 551 144 c +61 417 134 019 f +61 2 60 562 169 e [EMAIL PROTECTED] AOL Screen Name rickmancr750 [EMAIL PROTECTED] nt.gov.au Sent by: [EMAIL PROTECTED] 23/03/2004 05:04 PM Please respond to "Discussion of issues relating to Soaring in Australia." To: [EMAIL PROTECTED] cc: Subject: [Aus-soaring] Going beyond 2 Drums G'Day, Can anybody think of (or refer me to an example of) the dog type clutches that the author refers? Ronald Marks Northern Australian GC. _______________________________________________ Aus-soaring mailing list [EMAIL PROTECTED] http://lists.internode.on.net/mailman/listinfo/aus-soaring _______________________________________________ Aus-soaring mailing list [EMAIL PROTECTED] http://lists.internode.on.net/mailman/listinfo/aus-soaring
