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Thread: Rudder VS turnfin

  1. #1
    Join Date
    May 2014
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    FL
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    Default Rudder VS turnfin

    Can someone clarify if it makes a difference what side the rudder goes on VS the turn fin and why? Like if the turn fin is on the right side does the rudder go on the right of the strut?

  2. #2
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    Jul 2016
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    IL
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    Rudder goes to the right of the prop if you're going to be running clockwise circles, i.e. Right hand turns. Turn fins are most often installed in pairs, but I suppose only one side would be necessary if you were going to turn in just one direction for racing.

  3. #3
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    May 2014
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    Default

    It's for a 1/8 hydro

  4. #4
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    It doesn’t really matter on a hydro, but since they’re right turn, I put the rudder to the right of the strut because the rudder will always be turned away from the prop and I don’t need to worry about clearance. If you mount to the left, rudder will turn towards the prop and you may find larger props won’t have clearance when the rudder is turned. Make sense?

  5. #5
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    Very clear thanks

  6. #6
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    Quote Originally Posted by Vin-m View Post
    It's for a 1/8 hydro
    Missed that, sorry. I agree, prop clearance would be my primary concern about mounting it anywhere by the right side.
    Vac-U-Tug Jr (13mph)

  7. #7
    Join Date
    Nov 2008
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    Ql
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    3,169

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    Vin-m.
    Here is a bit of info that explains most of the effects of rudder & turn fin placement & adjustment. It's what I used when I first started setting up Hydros all those years ago. And still do.
    http://www.modelgasboats.com/resources/tuning

    Here's an old thread on the topic too which will shed some more light on the topic.
    https://forums.offshoreelectrics.com...os-amp-riggers
    Last edited by 785boats; 10-18-2018 at 04:43 PM.

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