Out-rigger technical question - dihedral or not?

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  • 1945dave
    Senior Member
    • Mar 2012
    • 304

    #1

    Out-rigger technical question - dihedral or not?

    I am looking to build a fast electric outrigger and probably have 15 various size Nitro and gas riggers in my shop right now. They all have one thing in common. Dihedral. I notice the very popular JAE 21 and the Mini Sprint have none. What are your experiences or opinion on this issue?

    Dave
  • grsboats
    Senior Member
    • Jul 2012
    • 975

    #2
    I run both types nitro SGX(45/80/1.01 (dihedral) and now a nitro Jae 45 and a Fe (flat) and both are fast but the first ones hold better traffic or choppy water than the Jae's. Jae's follow what it's called the Flat plane technology good for all kind of races but better for 2 laps or saw in my opinion.Gill
    GO FAST AND TURN RIGHT !
    www.grsboats.com.br

    Comment

    • 1945dave
      Senior Member
      • Mar 2012
      • 304

      #3
      Thanks Gill,

      That makes me feel better as I first raced Crapshooter outriggers back in 1971 and we tried everything and always came back to 3 degree dihedral. My experience with dead flat sponsons was they hunted and were not very forgiving. Yet with all the guys here on the forum that swear by the JAE series I wondered what changed by going to electric. What would you recommend in the JAE 21 size?

      Dave

      Comment

      • Chilli
        Fast Electric Addict!
        • Jan 2008
        • 3070

        #4
        There just isnt that many choices for FE riggers. The tubs for the nitro riggers are not tall enough for the battery and motor, and the boom locations make it even tougher to convert a nitro rigger to FE. The JAE kit is cheap, easy to build and requires almost no set up to run great (if you follow the directions). It was just the ticket for the P-Limited Hydro class which has become one of the most popular FE race classes. Brian Buaas's Raptor Riggers are awsome but are more expensive. The Renegade Rigger many feel is a little on the small side. That pretty much wrapped up our choices a few years back and I think... today.
        Last edited by Chilli; 08-23-2012, 09:25 AM.
        Mike Chirillo
        www.capitolrcmodelboats.com

        Comment

        • grsboats
          Senior Member
          • Jul 2012
          • 975

          #5
          Well my Jae Fe is really nice but built for saw.It's my very first experienvce with an electric rigger and with few mods I did to it I'm very pleased with its performance.There are other guys in my club running in the P-Limited with Jae's Fe and for such a low budget boat compared with a SGX, ROADRUNNER,Jaguar,etc I agree with Chilli that its a good option.You can also make your own design based on this or that boat but if you inttend to compete better of stick to what others are running or get a try to a Zipp kit. Gill
          GO FAST AND TURN RIGHT !
          www.grsboats.com.br

          Comment

          • Doug Smock
            Moderator
            • Apr 2007
            • 5272

            #6
            The JAE 21 FE is a great boat set up properly. I have built a ton of them and they perform right off the bench.

            D.
            MODEL BOAT RACER
            IMPBA President
            District 13 Director 2011- present
            IMPBA National Records Director 2009-2019
            IMPBA 19887L CD
            NAMBA 1169

            Comment

            • Doug Smock
              Moderator
              • Apr 2007
              • 5272

              #7
              The JAE 21 FE is a great boat set up properly. I have built a ton of them and they perform right off the bench.

              D.
              MODEL BOAT RACER
              IMPBA President
              District 13 Director 2011- present
              IMPBA National Records Director 2009-2019
              IMPBA 19887L CD
              NAMBA 1169

              Comment

              • 1945dave
                Senior Member
                • Mar 2012
                • 304

                #8
                Originally posted by D.Smock
                The JAE 21 FE is a great boat set up properly. I have built a ton of them and they perform right off the bench.

                D.
                Ever build one with 3 degrees dihedral in each sponson? I struggle to believe dead flat is better for heat racing. SAW maybe but heat racing?

                Dave

                Comment

                • grsboats
                  Senior Member
                  • Jul 2012
                  • 975

                  #9
                  1945dave I 've seen lot of japanese videos where they use the same flat botton running fast and very predictable in all kind of waters so a well trimmed boat can always be a good surprise.From my lexperience running only riggers I personally prefer dihedral but this is me. Gill
                  GO FAST AND TURN RIGHT !
                  www.grsboats.com.br

                  Comment

                  • Doug Smock
                    Moderator
                    • Apr 2007
                    • 5272

                    #10
                    Originally posted by 1945dave
                    Ever build one with 3 degrees dihedral in each sponson? I struggle to believe dead flat is better for heat racing. SAW maybe but heat racing?

                    Dave
                    No sir, I haven't seen the need.
                    Build what works for ya.

                    D.
                    MODEL BOAT RACER
                    IMPBA President
                    District 13 Director 2011- present
                    IMPBA National Records Director 2009-2019
                    IMPBA 19887L CD
                    NAMBA 1169

                    Comment

                    • jcald2000
                      Senior Member
                      • May 2008
                      • 774

                      #11
                      Easy to add 3 degrees to the JAE kit, let us know how it works for you.

                      Comment

                      • carlcisneros
                        Fast Electric Addict!
                        • Jan 2010
                        • 1218

                        #12
                        I race a JAE 21 Nitro with CMB Valvola for power and it runs on rails.
                        No mod to the boat at all.
                        I am in the process of converting a nitro kit over to outboard FE power.
                        I agree with Mr. Smock, don't touch them. they are great right off the building board.

                        I also Agree with Chilli on the inboard rigger kits. They do not lend them selves to swapping over to
                        FE power very well. boom tubes to close together, tubs too shallow, ect.
                        I have a new in box Jag2 that i wanted to convert to FE but do to the above, it wont work.

                        Comment

                        • Chilli
                          Fast Electric Addict!
                          • Jan 2008
                          • 3070

                          #13
                          I've read only a few comments by people (nitro guys) on another board that were not happy with how their JAE's handled. In almost all cases the boat was not set up as per the directions. With P-Limited power, my boat has run great heat racing for three seasons. It's stable, predictable and turns well. Allot of testing went into this boat. Build it like they tell you and you will be happy.
                          Mike Chirillo
                          www.capitolrcmodelboats.com

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