Whiplash Sport 40 Build

[ray schrauwen]

Nice build and pics.

Did you build on just MDF flat board or jig? What turn fin is that? Turn fin dimensions?

[detox]

Turnfin is a Virgina Craftsman. demisions are 3.75" deep, 2.5" width, 5/64" thick

[ray schrauwen]

Thank you very much. I tried contacting him once with no answer yet. Maybe I'll try again.

[detox]

I emailed Dick Tyndal of Virginia Craftsman and ordered this turnfin. I received it about 5 months later. Contact him by calling and get on his list. He may delete most recent emails concerning fins.

[ray schrauwen]

When you say it was running too wet, do you mean that it could go faster or that components were heating up?

Hull was running a little too wet so I added stepped ride pads. I cut these from a board of hard maple. This raised ride height 3/32" and increased AOA 1 degree. I sealed bare areas with fast epoxy. Thin coat of urethane paint will be applied (no primer) to keep edges sharp.

After painting I will roughen up hull floor with 400 sandpaper. This will reduce water drag also.

[ray schrauwen]

I'm just straightening out some stringers & bulkheads as the 2nd hand kit I bought was warped from poor storage. Just a heat gun then hand manipulation and then some weight until it cooled.

[detox]

Ray, On my first couple runs I had my strut adjusted too deep causing sponsons to plow into water (grab and go, grab and go). I readjusted the strut shallower and boat now runs more smoothly and skims more lightly across the water. Hull is now faster and pulls less amps. Stepped ride pads work really well also.

This hull is a challenge to build, but well worth the effort. The next one i build will have a little less weight added to both sponsons.

[oscarel]

Keith where did you end up speed wise?

Sent from my SAMSUNG-SGH-I747 using Tapatalk 2

[Brushless55]

Ray, On my first couple runs I had my strut adjusted too deep causing sponsons to plow into water (grab and go, grab and go). I readjusted the strut shallower and boat now runs more smoothly and skims more lightly across the water. Hull is now faster and pulls less amps. Stepped ride pads work really well also.

This hull is a challenge to build, but well worth the effort. The next one i build will have a little less weight added to both sponsons.

do you mind sharing your strut depth that is working for you?

[detox]

Strut depth is 3/4" from bottom of edge stern to bottom edge of strut. I am using a stock Octura x455. I have not clocked speed....in 60's maybe?

[meangenesracing]

can you tell me what motor you decided to go with the 1521 or the 1527? and it looks like you used the neu 3s lipos what were your run times any video?

[ray schrauwen]

Stringers are flattened out now, getting building board ready.

Great build thread. Time to contact D.Tyndall for fins...

[HOTWATER]

Stringers are flattened out now, getting building board ready.

Great build thread. Time to contact D.Tyndall for fins...

Might be a while before you get a fin from Dick...he is currently recovering from shoulder surgery....

-Kent

[oscarel]

Might be a while before you get a fin from Dick...he is currently recovering from shoulder surgery....

-Kent

Yep, that's what he told me as well. Said it would be late December and maybe later.

[ray schrauwen]

Bummer. I wish I could remember who the guy was that made the CNC turn fin on my PTSS Hydro..?? I could look back in paypal I guess...