Optimal Rudder throw

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Stephen Robinson
Posts: 10
Joined: 19 Oct 2024, 06:28
Sail number: 317
Design: Tribute
Location: Australind, WA
Australia

Optimal Rudder throw

Post by Stephen Robinson » 26 Nov 2024, 06:42

Just wondering what peoples thoughts are on the maximum rudder throw one should have.
I've seen 45° mentioned as well as 30°.
I'm setting up a 'new to me' IOM.
At our last meet, I tried 45° and added some Expo to try and desensitise the rudder at low throws, for jibing, but it didn't seem to be very effective.
It was still rather twitchy and I guess I had plenty of throw to round the markers.....

I'm going to try reducing the throw to try next time and see if anyhting improves.

Steve

Bruce Andersen
Posts: 796
Joined: 25 Nov 2003, 00:06
Sail number: USA 16
Club: Famous Potatoes Sailing Club
Design: Brit Pop
Location: Boise, Idaho
United States of America

Re: Optimal Rudder throw

Post by Bruce Andersen » 01 Dec 2024, 16:11

less throw = less drag
45 degrees seems a bit much and makes it tempting to use the whole throw, although it might be useful when trying to stop to avoid going over the starting line early!
Bruce Andersen - USA 16

Stephen Robinson
Posts: 10
Joined: 19 Oct 2024, 06:28
Sail number: 317
Design: Tribute
Location: Australind, WA
Australia

Re: Optimal Rudder throw

Post by Stephen Robinson » 02 Dec 2024, 03:10

Thanks. I have changed it to 30° and will try that.

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