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| Em White Motor Canoe steering |
| Author |
Message |
    
Kevin Martin
| | Posted on Monday, November 17, 2003 - 03:29 pm: | 
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I am restoring a 20' motor canoe with a 2 cyl Thrall inboard motor and the steering cable keeps slipping on the hub of the steering wheel. I took it apart a few years ago and forgot how it was attached. It has a side wheel with pulleys and eyes to a rudder yoke under the deck. Is there a trick to making this work? |
rbprice
| | Posted on Wednesday, November 19, 2003 - 05:26 pm: |
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Kevin - make three to five turns of the cable around the capstan drum and then take the free end of the cable to a turnbuckle. The other end of the turnbuckle could, if you want, be fastened to a very stiff compression spring (not a tension spring) that has two clips passing through the center of the spring so that when the tiller rope/wire is tensioned, the spring is compressed. This type of spring is used to cushion the retaining spring on screen doors. The spring rate needs to be stiff enuf to overcome the forces on the tiller arm generated by the water passing over the rudder blade. It can be done without the spring but if you bang the rudder on the dock or something, there is no cushion in the lines unless you are using rope rather than wire. Rope will stretch over time and you will need to constantly make adjustments to the turnbuckle and, eventually, the length of the rope.
Hope this helps.
Bob Price |
miro
| | Posted on Wednesday, November 19, 2003 - 10:30 pm: |
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Bob is right on the money - rope does stretch and shrink and a couple of times a year I have to re-tension the rope steering on my DisPRo. I know that it is time to do the re-tensioning when I can wrap the rope once around my hand - it does get that slack.
There's enough friction in the system that you can ( sort of ) set and forget the steering - mind you the DisPro is modestly powered, so there isn't much pull from the rudder.
I keep the rope since that what was used originally.
Miro |
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