ML Boatworks New Sport 20 Hydroplane for FE or nitro, pics and build thread

[HOTWATER]

I like that hatch Mike! I wouldn't mind having one of those made for mine...I guess I would still like to see how the glass cowl turns out....

[detox]

It's starting to look verynice. With your painting skills it could look lots nicer. I wouldn't wait on the Tyndall fin. UL1 fin should work.

[teach]

PM sent.

[cybercrxt]

Thanks a bunch Teach!!!


Well guys, just got back from a maiden run in 20mph headwind, 5-6" rolling short chop, no skid fin, and a center of gravity 1.5" behind the sponson heel due to a 4s pack being 1.5" from the nose, instead of 2- 2s packs pushed all the way forward, and all I have to say is this:



I have owned other sport 20 size hulls, and I would have just turned around and gone home after seeing the waves. I turn around and go home when I have a tunnel to run and the weather is like that. The boat ran AWESOME. It showed absolutely no signs of blowing off heading straight into the wind, it did NOT submarine, or even act like it wanted to, you could dead stop in the middle of the rollers, let the hull come to a dead stop, punch it, and it pops right back up on plane...in 5" chop! If this first run was an indication of how its going to be with the final center of gravity and a skid fin installed, this is going to be a dangerous hull!!! Teach was nice enough to get me a fin and bracket in the mail today to speed up the process, so once that arrives, and I purchase some 2s 5000 batteries so the boat can be set up like its suppose to be, videos will follow. I have not even been this excited with any of the tunnels I have tested. I'm really happy guys. Talk soon! Mike...OUT!

[HOTWATER]

Oh man, TOTALLY stoked Mike!

-Kent

[Diegoboy]

Awesome. I already started ordering the HW for mine.

[egneg]

I would like to know the price of a kit as well.

Never mind ... I will get the one from Danny when he sells it.

[Diegoboy]

lol

[ron1950]

where is the vid?

[JimClark]

Curious as to what size flex you used?

[cybercrxt]

Jim, I used a 3/16" cable, but a .150 would be plenty for UL-1 power.

[cybercrxt]

Here are some videos with the UL-1 motor, UL-1 controller, 4s1p.

Please NOTE: The boat does NOT have a skid fin yet, just awaiting one to arrive, and as you can see, the flat bottom strut is causing some choppiness in the turns. One the skid fin arrives I can actually do some tuning. These tests were just to see how the boat did in rough water and straight lines. I ran it the day before in 5-6" chop and it handled that and the 20mph wind amazingly well. The back of the boat is staying off the water very very well. Again, these are just tests because I was to impatient to wait! The boat shows a LOT of promise. One of the videos show what a beating the boat will take as well. Without a skid fin, I could not get it to make a right turn in time, and BANG into the rocks. This was the impact testing. I try to do this to all the new boats to see how it handles impact...lol. All it did was chip the ply on one of the sponson tips, and bend the rudder. All is back to normal now. Mike

http://www.youtube.c...bed/xD2WvaZouF8


http://www.youtube.c...bed/3aPefNhbSKM


http://www.youtube.c...bed/svtKSskwxsk

[cybercrxt]

list at front and last page

[Insaniac]

What battery configuration will fit in this hull? Do you have to run split packs?

[cybercrxt]

Insaniac, I am, right now, using a 4s, 5000mah Hyperion 35c single pack, but I (2)- 2s 5000 packs would be even better as you can push them a touch further forward. I have some lead in the nose of the center former right now since the 4s pack is about 1.25" back from the nose. Either way works fine.

Teach, I got home from out of town last night, and the skid fin had arrived! Got it installed this morning, and went out and ran the boat. It performs SO awesome! No more chopping in the turns, boat did not show any signs of blowing off as the fin really locked it in. I was able to remove the 2 degrees negative trim in the strut I had and put it around zero, boat handled wakes and wind and rough water really, really well. I plan now to get a cowling plug out to the vacuum former, and get the final drawings for the kit finished up. At that point, I will order about six kits and by the time I have those built, I should have the cowlings from my guy! I hope to get some really good videos this weekend as my local friend will have off and he can go out and record it running. It made such nice turns and you can point it any way you want, if you have to force a left turn, it does not try to lift the left sponson, it just holds! Really excited! videos real soon. Thanks, Mike