Brushless Wild Cat?

Collapse
X
Collapse
 
  • Page of 4
  • Time
  • Show
Clear All
new posts
Previous 1 2 3 4 template Next
  • FighterCat57
    "The" Fighter Cat
    • Apr 2010
    • 3480
    #1

    Brushless Wild Cat?

    I have a 500' body of water really close to me that's small for a fast boat, but fun in the wild cat.

    What I want is to use my standard transmitter/receiver setup...

    ... 5+ more MPH and 20 minutes of run time.

    It's pretty clear that the mounts can be taken out and the motors can be changed and there's room for an ESC, maybe two...

    What I don't know is the Kv of the stock motors and the size?
    What kind of brushless setup would work?

    Much smaller than I've worked with in the past and probably best to ask before tearing in to it. =)
    ________
    FX-1
    Last edited by FighterCat57; 02-14-2011, 11:13 PM.
    FighterCatRacing Team CHING BLING - Ching Bling. Brilliant, Advanced Sparkle for your hull.
    Tags: None
    • FighterCat57
      "The" Fighter Cat
      • Apr 2010
      • 3480
      #2
      Still looking for the Kv of the stock motors. They are Aquacraft T270
      Can Diameter: 24mm (0.95")
      Can Length without capacitor and shaft: 30.5mm (1.20")
      Overall length including capacitor and shaft: 57mm (2.25")
      Shaft Length: 10mm (0.40")
      Shaft Diameter: 2mm 0.08")


      I think it could be a fun little boat with twin brushless.


      If I can get enough power out of it, I'll make it my rescue boat!
      ________
      BMW M51 HISTORY
      Last edited by FighterCat57; 02-14-2011, 11:17 PM.
      FighterCatRacing Team CHING BLING - Ching Bling. Brilliant, Advanced Sparkle for your hull.

        Comment

        • FighterCat57
          "The" Fighter Cat
          • Apr 2010
          • 3480
          #3
          OK. Parts ordered! This is going to be a crazy little thing!

          The next question, is prop size. Tiny little guys, anyone know if I can find a counter rotating pair?

          Looks to be an M3 nut. I'm guessing a 1/8th prop will work.
          ________
          Daihatsu Taft History
          Last edited by FighterCat57; 02-14-2011, 11:52 PM.
          FighterCatRacing Team CHING BLING - Ching Bling. Brilliant, Advanced Sparkle for your hull.

            Comment

            • forescott
              Hopelessly Addicted to RC
              • Nov 2009
              • 2686
              #4
              How about the octura x430 left and right??

                Comment

                • FighterCat57
                  "The" Fighter Cat
                  • Apr 2010
                  • 3480
                  #5
                  Originally posted by forescott
                  How about the octura x430 left and right??
                  Hmm. I think those would work.

                  I did find out that these are 3mm shafts, so again, I think a 1/8th is in tolerance (.17mm)

                  I'd really like to stick with plastic and cheap though. I have a set of 32mm counter rotating props that I think would work, however they are for 4mm shaft. I think I can find a 4mm OD, 3mmID tube, but haven't looked yet.
                  ________
                  Medical Marijuana
                  Last edited by FighterCat57; 02-14-2011, 11:54 PM.
                  FighterCatRacing Team CHING BLING - Ching Bling. Brilliant, Advanced Sparkle for your hull.

                    Comment

                    • forescott
                      Hopelessly Addicted to RC
                      • Nov 2009
                      • 2686
                      #6
                      Originally posted by FighterCat57
                      Hmm. I think those would work.

                      I did find out that these are 3mm shafts, so again, I think a 1/8th is in tolerance (.17mm)

                      I'd really like to stick with plastic and cheap though. I have a set of 32mm counter rotating props that I think would work, however they are for 4mm shaft. I think I can find a 4mm OD, 3mmID tube, but haven't looked yet.
                      AAAAAH! venom props!

                        Comment

                        • FighterCat57
                          "The" Fighter Cat
                          • Apr 2010
                          • 3480
                          #7
                          Originally posted by forescott
                          AAAAAH! venom props!
                          Yep. Cheap $3 props. That reminds me, I have to look up 3-4mm tubing.
                          ________
                          VAPIR ONE REVIEW
                          Last edited by FighterCat57; 02-14-2011, 11:55 PM.
                          FighterCatRacing Team CHING BLING - Ching Bling. Brilliant, Advanced Sparkle for your hull.

                            Comment

                            • FighterCat57
                              "The" Fighter Cat
                              • Apr 2010
                              • 3480
                              #8
                              Perhaps a #128 inside of a #129 brass tubing?
                              http://www.offshoreelectrics.com/pro...dh-ks-brass-tb
                              ________
                              America'S Next Top Model Forum
                              Last edited by FighterCat57; 02-14-2011, 11:55 PM.
                              FighterCatRacing Team CHING BLING - Ching Bling. Brilliant, Advanced Sparkle for your hull.

                                Comment

                                • FighterCat57
                                  "The" Fighter Cat
                                  • Apr 2010
                                  • 3480
                                  #9
                                  OK, got the prop thing figured out. Just waiting on Hong Kong Post!

                                  Have the coupler thing all set as well.

                                  In case of failure, I have an alternate configuration in mind... HobbyHot has a 60a esc/motor combo with a water cooled inrunner that is very similar in dimensions, but has a larger motor shaft. Looks like it will bolt right up. My biggest worry then would be controlling it. Way too much motor for this little guy. Who knows though, it might make it really fun! It's about $80 bucks though, so will try the bolt in $30 Turnigy solution first.

                                  My speed/time goal is 30 mph with 15 minutes of run time. Either the Turnigy or the Hobbywing setup will do the trick for sure!
                                  ________
                                  Ford Xw Falcon
                                  Last edited by FighterCat57; 02-15-2011, 12:03 AM.
                                  FighterCatRacing Team CHING BLING - Ching Bling. Brilliant, Advanced Sparkle for your hull.

                                    Comment

                                    • turboed13b
                                      Junior Member
                                      • May 2010
                                      • 9
                                      #10
                                      care to provide some links of the parts you are using?

                                        Comment

                                        • FighterCat57
                                          "The" Fighter Cat
                                          • Apr 2010
                                          • 3480
                                          #11
                                          Originally posted by turboed13b
                                          care to provide some links of the parts you are using?
                                          Sure!

                                          Plan A:

                                          2900Kv Inrunner drop in replacement
                                          http://www.hobbyking.com/hobbyking/s...idProduct=4197

                                          35-40a ESC for 2900Kv inrunner (2-3s Lipo)
                                          http://www.hobbyking.com/hobbyking/s...idProduct=6461

                                          Plan B:

                                          SwangHobby(HobbyHot) 60a ESC/Water Cooled motor Combo:
                                          http://www.hobbyhot.com/swanghobby-marine-3600kv-brushless-motor-flyermate-atlantis-60-c-281-p-1-pr-2307.html
                                          hobbyhot.com is your first and best source for all of the information you’re looking for. From general topics to more of what you would expect to find here, hobbyhot.com has it all. We hope you find what you are searching for!



                                          I plan on using the 32mm Counter Rotating Venom Propellers with a #128 brass tubing insert to fit as 1/8th props. I'll experiment with both rotating inwards for performance and outwards for stability.
                                          ________
                                          IOLITE VAPORIZER
                                          Last edited by FighterCat57; 02-15-2011, 12:05 AM.
                                          FighterCatRacing Team CHING BLING - Ching Bling. Brilliant, Advanced Sparkle for your hull.

                                            Comment

                                            • FighterCat57
                                              "The" Fighter Cat
                                              • Apr 2010
                                              • 3480
                                              #12
                                              Ha! Swang's out of the 60a/Inrunner combo! Guess it was a good deal!
                                              FighterCatRacing Team CHING BLING - Ching Bling. Brilliant, Advanced Sparkle for your hull.

                                                Comment

                                                • FighterCat57
                                                  "The" Fighter Cat
                                                  • Apr 2010
                                                  • 3480
                                                  #13
                                                  The drop in HK motors should be here tomorrow!

                                                  Nothing fancy, 2s and little 32mm props to start. The goal isn't massive speed runs, rather a good increase in speed and a nice long run time.
                                                  FighterCatRacing Team CHING BLING - Ching Bling. Brilliant, Advanced Sparkle for your hull.

                                                    Comment

                                                    • FighterCat57
                                                      "The" Fighter Cat
                                                      • Apr 2010
                                                      • 3480
                                                      #14
                                                      The babies are heeeeeeeeeere!

                                                      So tiny!

                                                      Looks like I'll have to shave in a flat spot on the shafts, but otherwise, good to go!

                                                      I'll get some photos of the mounting/installation process. The aluminum cooling coils should fit right on.

                                                      The special instructions on these ESC's say 2s only if over 2000Kv, which I'm at 2900Kv on these lil guys. So, 2s it is. There's room for two 2s 2200kv lipo packs, so will see how the power/run time situation goes.
                                                      Attached Files
                                                      FighterCatRacing Team CHING BLING - Ching Bling. Brilliant, Advanced Sparkle for your hull.

                                                        Comment

                                                        • FighterCat57
                                                          "The" Fighter Cat
                                                          • Apr 2010
                                                          • 3480
                                                          #15
                                                          OK, parts in! However, in a 50/50 chance I setup the props spinning outward.

                                                          Hmmm, should I set them up counter rotating in or out?
                                                          FighterCatRacing Team CHING BLING - Ching Bling. Brilliant, Advanced Sparkle for your hull.

                                                            Comment

                                                            Previous 1 2 3 4 template Next
                                                            Working...