Results 1 to 6 of 6

Thread: Need Professional Help.

  1. #1
    Join Date
    Apr 2019
    Location
    NC
    Posts
    7

    Question Need Professional Help.

    I purchased 3 new in the box Graupner Electro Vee Hulls.
    They are 28.5” long with a beam of 8”
    I need suggestions for a Brushless set up?
    I’m not looking for a racing setup, just fast enough to have fun with my kids.
    All three are going to be set up identical so we can race each other

    Motor size & KV
    ESC size
    Lipo battery cells, Mah & C-Rating
    Surface or Submerged drive
    Prop shaft size
    Prop size

  2. #2
    Join Date
    Apr 2011
    Location
    tx
    Posts
    1,284

    Default

    In my opinion I’d set it up something similar to an aquacraft revolt.
    3656 2000ish kv
    Seaking 120 esc
    4s2p or a single 4s 50c plus
    Tfl stinger and rudder
    3/16 shaft
    442 prop
    Should rip, stay cool and be very durable.
    Jmo

  3. #3
    Join Date
    Aug 2008
    Location
    CO
    Posts
    7,080

    Default

    Wow, that was my first FE boat!
    Are you going to use the steerable outdrive? This will make them quite squirrelly, but are cheap and relatively simple.
    A fixed strut or a stinger might be a better handling option. I’d be mounting it where the center of propshaft is 3/8” above the base of the vee, so it will be surface penetrating.

    The above recipe sounds reasonable. The boat can handle the weight. We used to use 12 round cells, a brushed motor on a 3:1 gear reduction and a 42-45mm prop. Probably got mid to upper 20s.

    With all the lift those hulls have, you don’t need a lot of power.
    I’d be more inclined to try a 2700ish 36mm motor on 3S2p with 40mm prop. And maybe go up to a 42 if needed.
    Maybe show us a picture of what you are starting with?

    If you ever want to sell those steerable outdrives, keep me in mind.
    "Look good doin' it"
    See the fleet

  4. #4
    Join Date
    Mar 2017
    Location
    VI
    Posts
    371

    Default

    The revolt setup would be perfect for that boat.

    I would like to point out that the revolt motor is an 3656 1800kv motor.

    The x442 would be an excellent prop.

    4s lipo 5000 mah 20c or greater.

    Surface drive.

  5. #5
    Join Date
    Apr 2019
    Location
    NC
    Posts
    7

    Default

    I have a ton of 3S 5000 40c lipo’s from my airplanes!

    Should I increase the KV to use them or use them in series for a 6S setup & reduce KV?

  6. #6
    Join Date
    Mar 2017
    Location
    VI
    Posts
    371

    Default

    You can run a single 3s with the suggested setup. The electro vee is a little smaller than the revolt and it probably have more lift. I would suggest 3s with the x442 or you can even get an m545 for 3s running with the suggested aquacraft 3656 1800kv.

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •