Brushless power for Kyosho Bluestreak

[Bart Marshall]

The bluestreak is the same hull as the twinstorm 800. Lightweight abs 33" long. Thinking about keeping the steerable outdrive but using direct drive to an aquacraft bl motor and speed control. Would the ammo 2300kv be a better choice then the sv motor for this size hull and what prop should I start with?

[Bart Marshall]

Forgot to add I will be using 14 IB3600 cells

[Jeepers]

on 14 cells I would use the SV motor.

[Steven Vaccaro]

I would use a feigao xl motor for a boat that size.

[DISAR]

I modified my bluestreak from nitro to electric, feigao 9xl, did a couple of runs with 42 & 45mm props, 12 cells Nimh, but finally I did not like to attitude of that boat. Too much bouncing and seemed very difficult to plane. I did not spend any more time to change the shaft and steering. I converted then my Delta force (33in) from nitro to electric. Much better performance

[pompebled]

Disar is right, the Blue Streak isn't designed to go much faster than with the stock powerplant.
The hull has a rocker that makes it porpoise beyond control if you install that much power.

A better hull would make a nicer home for all your goodies.

Regards, Jan.

[Bart Marshall]

I think you're right about the hull having limitations. I got it going much faster then stock with a 19turn motor on 7 cells with a 44x1 prop and I had to use long trimm tabs to help with the porpoising. I've noticed the same problem with my Cesa 1882-the hull is slightly more rounded then the almost identical Super Hawaii and wants to porpoise far more. Thanks.

[SJFE]

Another reason those hulls porpos so bad is that they are soft. The hull flex makes them bounce. Further more @ higher speeds they deform into concave hook that creates more drag. Carbon strips glued the length of the hull would counter this. That as you may well know is alot of work. Sorry for the bad news.