Set up questions

[Spraguepsycho1]

I'm building a Dumas SK-Daddle Too just to play around with, nearest official races are over 150 miles away from where I live. The SK-Daddle is a flatbottom hull 27 inches long, low profile kind of like the full sized drag boats. I was thinking about using an adjustable turbo strut type surface drive (3/16 flex shaft), with the rudder behind the prop, and a turn fin at the center of the hull at the CG so it can turn without sliding too much. Engine will be a CZ.12 for now (.56 hp) but if it handles ok I might switch to my CVR.15 (1.2 hp) or a strong running .21 for more speed. I know it won't turn like the Deep V hulls do, but I don't mind slowing way down for the turns as long as it screams down the straights. What do you people with experience think I should do? stick with my plan or set it up some other way? Also what props would you recommend as a starting point with the .12 or .15 engines I have? Thanks

[bugfanatic]

I know that Sk-Daddle Too boat. Yeah, a center turn fin should work pretty good since it's a pretty flat boat & you'll be turning both directions, not like only running a competition oval. You may want to move the turn fin behind the CG though as it will help any tendency to flip. I had a similar setup ona boat & it worked pretty good.

[Spraguepsycho1]

yeah I was planning on setting the fin right where the hull flattens out, I figure that way it should stay in the water most of the time. What kind of speeds do you think the Sk-Daddle should be able to hit in the straights if set up properly? I test floated it in the bathtub yesterday with an old prop, engine, wadio gear etc in it along with extra weight to simulate a full tank of fuel, and the rear of the hull only sits about 1/2" below the water, seems like it should plane really easy.

[bugfanatic]

Yeah, that thing planes really well, almost instantly. With a .12 I would expect 25-30mph, with a good .15 setup it might make it to 35-40, a strong .21 with the right setup could get you close to 55mph if not faster. This all depends on nitro content, strength of motor, weight of boat, etc.

[Spraguepsycho1]

I will be very happy if I can get that kind of speed out of this thing, considering the hull kit alone only costs $32 today from Dumas (I think my dad paid like $11 back in the late 70's at the LHS) lol. Since I already have the engines and a radio to use, the entire project should come in right around $100 total for me to buy the running gear and a fuel tank. I think I am going to buy an Associated RC10GT fuel tank with the flip top lid since they seen much easier to fill and mount than most of the fuel bottles I've seen in boats. Those tanks are 75cc's and I've run the CV.12 for almost 10 minutes on a single tank in the truck, the CVR.15 usually lasts about 7-8 minutes.

[Spraguepsycho1]

I'm stuck waiting for some cash to come in so I can buy my running hardware, but I finished the paint today

[Spraguepsycho1]

another view

[FlyerCAN]

PURPLE!

Shes a beaute

[Spraguepsycho1]

Thanks, I had to use the black/purple theme on it, kinda goes with some of my other toys lol. My quad is black with a purple tank and seat cover, and my wildland fire engine is purple with black trim to offset it too. I'm going to make decals on the puter using my fire company logo and put em on the boat someday (wonder if that would make the boat qualify as an advertising write off on my taxes) lol.

[Spraguepsycho1]

I've finished putting together my homemade hardware, not going to spend any more time worrying about how it looks, until I see if it works on the water or not. Just need to mount the fuel tank and radio, and find an exhaust system and it should be ready to hit the water.:)