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Thread: Oval Racing Curved Turn Fin For UL-19

  1. #1
    Join Date
    Sep 2010
    Location
    MI
    Posts
    588

    Default Oval Racing Curved Turn Fin For UL-19

    Mojo Racing Products has a direct bolt on solution for your UL-19 RTR sport hydroplane! $24.99each

    Curved turn fins are what works well on today's oval racing RC sport hydroplanes! This fin is based on our best seller 20 size fin blade design. Blade width at s 2.5" and blade depth top of blade to bottom of hook is approximately 3" This fin was designed to be a direct bolt on upgrade for your UL-19 hydro. Make your UL-19 Proboat corner like it's on rails! This fin will enable you to go wide open around the turns, and hold the pins!

    This fin features:

    Rugged 0.048" blade thickness
    One piece design
    Pre-Sharpened leading edge
    Awesome cornering!
    436 high grade stainless steel
    Laser precision cut
    Laser cut mounting holes to fit UL-19 OEM bracket
    Press brake formed curved section
    Made in USA!

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    https://www.mojoracingproducts.com/c...plane-turn-fin
    Bob Zola NAMBA 212
    2022 NAMBA Nationals FE High Points Champion
    Owner www.mojoracingproducts.comTeam Driver: Black Pearl Hydroplanes

  2. #2
    Join Date
    Oct 2021
    Location
    NE
    Posts
    1

    Default

    Is it natural for this fin to pull the hydro to the right? Everything else is stock, just replaced the turn fin with this one. However, maiden voyage with the new fin has it pulling to the right, so much so that I can't compensate by adjusting the trim. Any help would be greatly appreciated!

  3. #3
    Join Date
    Sep 2010
    Location
    MI
    Posts
    588

    Default

    1st complaint I have heard. Pulling to the right with this fin is not natural. Check the top edge of the fin in relation to the side of the boat with a scale or ruler. Make sure the fin is parallel to the sides of the boat. Measure the front top edge to boat side, then the rear. If you shim the rear hole of the fin with a thin washer this should straighten the boat out from pulling to the right. They way it is now sounds like the fin is not parallel to the boat center-line causing a right rudder effect. Hope this helps.
    Bob Zola NAMBA 212
    2022 NAMBA Nationals FE High Points Champion
    Owner www.mojoracingproducts.comTeam Driver: Black Pearl Hydroplanes

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