Results 1 to 5 of 5

Thread: What to mark props with for testing

  1. #1
    Join Date
    Jun 2014
    Location
    tx
    Posts
    82

    Default What to mark props with for testing

    I read you can mark props with dye and then run them to see where the water is being pushed at the back vs. the tongue slowing the boat down from pressure on the front. What works for marking it?

  2. #2
    Join Date
    Mar 2011
    Location
    CA
    Posts
    1,431

    Default

    https://www.overtons.com/modperl/pro...xoC-d4QAvD_BwE

    I've only ever tried with a regular sharpie but I have read you can use a blueing pen

  3. #3
    Join Date
    Jun 2014
    Location
    tx
    Posts
    82

    Default

    When I had a catamaran I tried with a sharpie, but two runs didn't remove any of it. So at least for that boat, the sharpie stayed on too well. Maybe one of my daughter's Crayola non-washable markers will work. I don't really want to bother with buying a Dyekem blue pen if I can get away with something I already have.

  4. #4
    Join Date
    Oct 2013
    Location
    la
    Posts
    8,740

    Default

    Is this really a thing?
    32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) was

  5. #5
    Join Date
    Jun 2011
    Location
    FL
    Posts
    789

    Default

    I have seen Marty Davis (a true prop Guru) use some sort of tooling dye on props to see where the high pressure areas are. I believe the dye wearing off shows the pattern. As for sharpies I use them to identify props and mark some with pitch and diameter when I cut them. The Sharpie stays on the blades and barely wears at all. On full size aluminum props you can see cavitation burn on the paint and exposed metal.
    Mic

    Mic Halbrehder
    IMPBA 8656
    NAMBA 1414

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
  •