Is it good a mirror like polish on a prop?

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  • Jeff Wohlt
    Fast Electric Addict!
    • Jan 2008
    • 2716

    #16
    I think 600 is good. Scuffed but not leaving a rough surface.
    www.rcraceboat.com

    [email protected]

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    • LarrysDrifter
      Big Booty Daddy
      • May 2010
      • 3278

      #17
      Sand enough to take the shine away. You want a flat, dull surface. I sand to remove the orange peel that you eventually see after beginning to sand.

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      • Gimp
        I am the Stig
        • Jan 2011
        • 547

        #18
        Thanks for the hull into, I always wet sand and polish after paint, so this will eliminate a step, at lease for the bottom lol.

        When sanding the prop, does it make a difference which direction you sand in?
        -Fighter Cat Racing-

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        • Boaterguy
          Fast Electric Addict!
          • Apr 2011
          • 1760

          #19
          i would assume along the blades (tip to TE) would be better than across the flow of water.

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          • Fluid
            Fast and Furious
            • Apr 2007
            • 8012

            #20
            Prop or hull finish has absolutely nothing to do with Bernouli! Surface finish effects the friction between the object and water - but wait, most of the front of the prop blade runs in air, not water. If you care about learning the fastest finish, by all means listen to the guys who never set a SAW record, they certainly know what's best.



            .
            ERROR 403 - This is not the page you are looking for

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            • 6BOOST
              Senior Member
              • Sep 2011
              • 286

              #21
              Originally posted by Fluid
              Prop or hull finish has absolutely nothing to do with Bernouli! Surface finish effects the friction between the object and water - but wait, most of the front of the prop blade runs in air, not water. If you care about learning the fastest finish, by all means listen to the guys who never set a SAW record, they certainly know what's best.

              .
              Do you have anything helpful to add and give advise on or you just wanted to stop by and let everyone know that everyone who has posted has no idea (compared to you) Fluid?

              6BOOST
              6boost Turbo Manifolds, Australia's number 1 turbo kit specialist and manufacturer

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              • Fluid
                Fast and Furious
                • Apr 2007
                • 8012

                #22
                This topic has been discussed many many times, and the OP could have used a search to find out - but he chose not to make the effort. Those here who really do have fast boats have posted their findings repeatedly but no longer do so because they are told they are wrong by the ill-informed...who then continue to spread bad info to new boaters. Frankly I got tired of all the BS posted about prop finish (Bernouli? Really?) hence my post. If you don't like it, then simply add me to your Ignore list instead of making yet one more post which adds absolutely nothing positive to anyone's understanding of the topic.



                .
                ERROR 403 - This is not the page you are looking for

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                • Gimp
                  I am the Stig
                  • Jan 2011
                  • 547

                  #23
                  Originally posted by Fluid
                  Prop or hull finish has absolutely nothing to do with Bernouli! Surface finish effects the friction between the object and water - but wait, most of the front of the prop blade runs in air, not water. If you care about learning the fastest finish, by all means listen to the guys who never set a SAW record, they certainly know what's best.
                  .
                  Can you please elaborate Fluid? After taking a Fluid Dynamics class I have a lot of interest in the subject. My assumption was polishing gives higher speeds due to a lower Reynolds number (in piping at least, we didn't cover stuff like this in class). Resulting in smoother laminar flow. Looking at 1:1 props, most are polished (but that also helps with corrosion).

                  I was skeptical of the scuffing at first, hope you can enlighten me a little.
                  -Fighter Cat Racing-

                  Comment

                  • 6BOOST
                    Senior Member
                    • Sep 2011
                    • 286

                    #24
                    Originally posted by Fluid
                    BTW, your cred is....?.
                    If your sick of peoples stupid questions why waste your time trying to make everyone sound like an idiot if not to glorify your own knowledge? Seems to be a recurring theme on this forum, you enter, write some droll remark about how no one has any idea then exit without offering the correct information. Your talking about more useless posts not adding anything positive to the thread, yet your first post in it was exactly that, useless and belittling. Next time you don't feel like answering the same stupid questions Jay, how about rather than me add you to my ignore list, you just don't post unless its to help, or you tell the OP to use the search function rather than come across like an arrogant dick.

                    6BOOST

                    Edit: My cred is nill, hence the reason I didn't post a reply
                    6boost Turbo Manifolds, Australia's number 1 turbo kit specialist and manufacturer

                    Comment

                    • Rumdog
                      Fast Electric Addict!
                      • Mar 2009
                      • 6453

                      #25
                      ^^yup!^^

                      Comment

                      • camaroboy383
                        Junior Member
                        • Jan 2012
                        • 10

                        #26
                        I did say (kinda) i did not say they were directly related... its an attract and repell thing wich they both have in common.... JKR asked a simple question and i gave an answer,,unlike you,, i know people that have plenty fast boats,,, guess what,, there prop isnt shiny....simple.....dont try to discredit me cause im new here... i know plenty... you do whatever you like to your prop JKR...just be sure its sharp... maybe fluid will tell you how he is the fastest in the nation.......... what do you think 6boost???? will fluid spill the greatest speed secret ever??????


                        Alden
                        FOREVER IN DEBT TO THE GREAT "COD FISH" (JERRY WYSS),, WILL NEVER FORGET....

                        Comment

                        • 6BOOST
                          Senior Member
                          • Sep 2011
                          • 286

                          #27
                          Originally posted by camaroboy383
                          maybe fluid will tell you how he is the fastest in the nation.......... what do you think 6boost???? will fluid spill the greatest speed secret ever??????


                          Alden
                          Doubt it, but apparently the pro's have already shared the info somewhere, we just have to look for it lol. I have 3 of the same prop for my 3080 mono, if I get time I'll test polished vs matt vs shot peened finishes with proper saw timing equipment not just gps, won't be for a few months tho.

                          6BOOST
                          6boost Turbo Manifolds, Australia's number 1 turbo kit specialist and manufacturer

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                          • camaroboy383
                            Junior Member
                            • Jan 2012
                            • 10

                            #28
                            your in oz,,, you know tim duggan???bryan rutley?? greg moss?? aaron alberico??

                            Alden
                            FOREVER IN DEBT TO THE GREAT "COD FISH" (JERRY WYSS),, WILL NEVER FORGET....

                            Comment

                            • camaroboy383
                              Junior Member
                              • Jan 2012
                              • 10

                              #29
                              jkr,, i watched your video above,, has your setup changed at all since then?? i noticed the hull starts to porpoise,,,your main goal should be to settle that boat down... beleive it or not.,,geez ill probably get shot for sayin this,,,but,,,if you have issues getting it to settle down try a 3 blade prop..it can help the porpoising on certain setups...many many very fine adjustments to the strut and rudder,,along with fins and tabs if you have them..explore the settings one piece at a time,,if you go changing everything at once you will risk never getting the proper setup...
                              FOREVER IN DEBT TO THE GREAT "COD FISH" (JERRY WYSS),, WILL NEVER FORGET....

                              Comment

                              • jkr
                                FE Addiction
                                • Aug 2010
                                • 568

                                #30
                                camaroboy383.
                                The porpoising efect made because i am trying to make selfrightning without flud chamber.
                                The steps of the hull doesn't help me with the cg.I had to pull my lipos a bit back.
                                The next step is to put 2s 2p (14,8v) to get as lower cg as i can.

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