10 Jul 02:38
New drive leg
From: Ian Cassell <iancassell@...>
Subject: New drive leg
Newsgroups: gmane.culture.transportation.humanpowered.boats
Date: 2008-07-10 00:41:22 GMT
Subject: New drive leg
Newsgroups: gmane.culture.transportation.humanpowered.boats
Date: 2008-07-10 00:41:22 GMT
Finished my drive leg and worked ok, boat was not as fast but at least it worked. It consists of an involute gear box angled at 45 deg with two universal joints connected to a 450mm prop. The boat was a bit slower than with the shaft and drive in the boat, advantage was transport and turned a lot tighter probably from having the prop in the middle and not at the end. Disadvantage was the big hole (100mm x 1000mm) to fit the drive leg, this has weakened the boat and when pedaling hard the drive wobbles a bit to the point where I sprang a few small leaks. One problem in raising the drive leg was getting the prop into the vertical position to lift it through the hole, without the outriggers I would have gone for a swim. Ian Cassell
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