The Black Pearl P Sport Hydro 2017

[T.S.Davis]

The Minipearl ran great Saturday. Now if I can get the Dragon cobbled back together. Smock found all the missing bits so I can epoxy it back together. Yard sale of wood chunks.

[Shooter]

I need to hear the story about the Dragon. What happened???

The panther just got her first plug job (careful Tom!). NOW she's a race boat.

[T.S.Davis]

We're not sure . we think I ran into the square part of Kevins strut when he spun out chipped the leading edge if my tunnel to bits.

[longballlumber]

Well Ball's Boat Works actually got some "stuff" done getting ready for Flint. This is one of the early versions of Pete's boats that he built. I finally got a chance to work with a vinyl cutter that a bought a while back.


IMG_1190.JPGIMG_1191.JPG

[Shooter]

That is really looking good! I like the black/white lettering over the orange.

[T.S.Davis]

Those vinyl machines can be so much fun.

Pete, do you have any nose cones? Mine is ruined on the paper weight boat. Completely forgot about it until this very minute. Mine is a cone of shame.

[Shooter]

Pete
I would say YES to that.

Any rudder - with the bottom of it angled to the rear will push the rear of the hull up when it is turned.
If the bottom of the rudder is tipped in toward the hull it will pull the rear of the hull down when turned.
It is also best on any hull to run with the bottom of the rudder angled to the rear (away from the hull)

Now lets look at your problem as if this was a NASCAR ( Jack up the rear left to put more weight on the right front)
A left steering correction -
Left sponson rides up on the turn-fin, Also with your rudder on the Right - it is pushing the right rear of the hull up and the Left sponson Down
Magnifying the problem.
When the rudder is on the Left With a bit of Left correction-(Rear left pushes up) this creates a bit of downforce on the Right Sponson trying to counteract the Right sponson riding up on the turn fin.

In conclusion -
Rudder on the Left, you have a better change of NOT rolling over on a Left Correction.

This is my though on this, others may be different.

Larry

Update. I did some testing on Saturday after moving the rudder to the left. It no longer rides up the turn fin with small left corrections. Much improved.

Race day was very windy. It blew over once in the back straight on the first heat. I added 6oz of lead at the CG. It ran very well in the next two heats. Took 2nd overall. I still think a light boat is advantageous, because you can add the weight where YOU want it. I'm considering adding an option for motor position to be 1" more forward. This will still allow room for the longer can guys, but provide an option to move things forward for smaller cans. Also, I plan to bring the servo forward if possible.

[detox]

Update. I did some testing on Saturday after moving the rudder to the left. It no longer rides up the turn fin with small left corrections. Much improved.

Thanks for letting us know.

Question. Does prop spray hitting against side of rudder have an affect on hull tracking strait or hull/rudder fighting itself down the straits. Shouldn't prop extend past rudder to prevent?

Mr. Schaffer of ABC props mentioned this to me "What is the effect of prop spray hitting against side of rudder?"

...

[Shooter]

I never even thought of that. I would imagine that it does have some effect.

I'm just happy that it's no longer riding up the fin. We were discussing in another thread that the right mounted rudder plants the left sponson when turning left. You would think this is a good thing, but it's just helping it climb up the fin in my case.

[Shooter]

The Black Pearl now has a sister ship!!! LSH!!!!!

[CraigP]

Very nice! I love those laser cut kits, really makes building them a pleasure! Might have to try one out after the DF Vortex 33 Hydro build

[T.S.Davis]

Smaller frame?

[Shooter]

Thanks guys!

Yes, it's a smaller frame. 30" boat. I've been chipping away at this project since we talked about it earlier this year. I had to re constrain all the slot dimensions in such a way that they shifted the same way when changing the widths. A real PIA. Then, scaled the slots up, and scaled the entire thing down to LSH size. Result was slots that are still set up for 1/8" ply. So far, so good.

[darryl whitman]

Hi shooter , long time away from your posts, I see your on V6 of this boat . WOW. nice work, Are you still selling the frames ???
ty Darryl

[Shooter]

Hey Darryl!! Good to hear from ya. Sent you a PM.