Rio 51 conversion

[Brushless01]

Brushless are you going to convert yours ??

[Brushless55]

Brushless are you going to convert yours ??

That's a great question 01
I love the runtime and sound of these 2 strokes
but the cool factor of brushless has me thinking
I would love to try a cheap KB45 700kv motor on 10s

[Jacked1]

That's a great question 01
I love the runtime and sound of these 2 strokes
but the cool factor of brushless has me thinking
I would love to try a cheap KB45 700kv motor on 10s

What size prop are you thinking??

[Brushless55]

What size prop are you thinking??

I have no idea, this is a big boat

[Brushless01]

x455 or x655 ?? The little screamers cant turn props over 60 mm

[Jacked1]

I have no idea, this is a big boat

I am trying to think of what gear ratio to use in 47inch mono, i know i am going to gear down a kb45 10xl 1200kv and it should be at about 15500rpm with a prather 275 (74.9mm and 4.3in pitch) and with pitch and diameter calculations the motor should see about as much work as a graupner 45-48mm in direct drive witch i am hopping won't break anything. After it is geared down at the prop will be around 705kv so i was very interested. All i need to do is seal the hatch and it is ready so i will let you know how it runs! I am getting all the bugs out with the kb45 then i am going to put dual 600 heli motors that are rated for a little more power than one kb45 and have them go to one outdrive. i have never seen it done in a boat this big (unless they were inline gassers) so i am pretty excited to see how it does.

[Doby]

I'm currently running one of these;
http://www.offshoreelectrics.com/pro...d=oct-x470%2F3

[Jacked1]

I'm currently running one of these;
http://www.offshoreelectrics.com/pro...d=oct-x470%2F3

That looks nice! hmmmm And yours on 10s is around the same rpm as i am going for. Do you know how many amps you are pulling? I know that big 3080 has can handle a lot more than a kb45 so i might be in trouble with how i have it now.

[Doby]

My 3080 is a 12 turn, rated at around 490 KV if I remember correctly.
Never checked the amps.

[Jacked1]

Thanks! I think it will be okay for now untill i get the other motors. I am gonna put up a build thread for it pretty soon!

[Jacked1]

And here is the thread i was talking about, i mentioned your boat too in it doby! I would say it is kind of a hero for mine to look up to!

http://forums.offshoreelectrics.com/...ad.php?t=16689

[Brushless55]

I think I will stick with gas on mine for the runtimes

[forescott]

Let us know how she runs with that zenoah motor. I've been thinking about getting another big gas boat and the new rio is at the top of my list.

[Brushless55]

Let us know how she runs with that zenoah motor. I've been thinking about getting another big gas boat and the new rio is at the top of my list.

I will buddy
I really would love to find a different muffler for it to get a bit more power out of the G260PUM motor
20-25min runtimes should be a hoot
I'm going to break in the motor sometime this Saturday

[Brushless01]

The problem is for me were i run i cant use a gas boat so i cant drive it anywhere except the sea which made the exhaust rust and i had to buy a new one its just ruiining the boat. Time to go to the best power source !!