Stinger length vs rudder length

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  • lenny
    Fast Electric Addict!
    • Sep 2010
    • 4293

    #16
    Your in FL,
    Why havent you tested yet.
    I think it will be fine, And get some video,s too.
    ? ONLY IF THEY WORK

    My youtube videos.http://www.youtube.com/user/61manx?feature=mhee

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    • BlackSnakeRacing
      Member
      • Sep 2012
      • 59

      #17
      Originally posted by Rumdog
      left turn only? You mean right? In general, it is good practice to have the blade in line with the leading edge of the prop, as already stated.
      You mean what i know... damn kids were bugging me while i was typing
      Cars and planes are for fun... Boats are for serious racing Bust Out Another Thousand

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      • G-UNIT
        Senior Member
        • Nov 2009
        • 949

        #18
        IMG_0307.jpgIMG_0308.jpgIMG_0309.jpgIMG_0310.jpgIMG_0311.jpg
        Here is what this set up look like, should I shorten the stinger ?

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        • pompebled
          Member
          • May 2007
          • 38

          #19
          Hi G,

          Like mentioned higher up, do a few testruns first before altering things.
          On my boats, the ruddeblade site next to the prop to counteract propwalk.

          If you're not happy with the performance, elongating the rudder outholder is easily done.

          On the other hand; rule of thumb is to have the front of the prop between 10 and 13% of the hull length from the transom.
          Too far from the transom will give the prop more authority (propwalk will be more severe), than you can correct by steering left...

          Having to steer left in order to run straight also has it's limits; when the speed picks up, the rudderblade will start to act as an elevon, pushing the left front of the hull in the water, lifting the right side.
          When going fast enough, this will upset the handling enough to make the boat flip violently, before top revs are reached.

          Looking at the pictures, I noticed the outlet isn't at the highest point on the cooling jacket, this may trap air inside, resulting in the 'dreaded partial motor cooling'...
          Asl the Leopard is a four pole, I don't expect any issue though.

          Regards, Jan.
          Last edited by pompebled; 03-01-2013, 10:02 AM. Reason: addition.

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          • G-UNIT
            Senior Member
            • Nov 2009
            • 949

            #20
            That is the outlet on the top of the cooling jacket, the inlet is the hose at the bottom of the jacket and the hose running under the motor is the inlet to the esc.
            once I get everything sealed up I will test it and see how it runs befor changing any thing, thanks for all your input, it helps alot.

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