Oval Racing Curved Turn Fin For UL-19

[mojoracer]

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/collections/rc-boat-turn-fiins/products/version-2-sport-20-lsh-size-304-stainless-steel-sport-hydroplane-turn-fin

[pamisano]

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!

[mojoracer]

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.