Rio test thread.

[SJFE]

Hey I'd give up first dibs on parts to live the rock & roll life style you do. I wana ba a snowmobile fugitive too!!!

[Eyekandyboats]

you just had to mention that, lets hope no one else asked what you are saying. . .

i'm going out in a sec

[SJFE]

Er..UM...Ahhh...Woops

[Jeff Wohlt]

Not sure where your CG is when you say packs are 2" from rear. Most monos will need about 30 percent from transom to get up and move. THis boat may have too much transom weight on it. Balance it.

Going to smaller props is not the answer...just making it harder to set up. Make 1 change at a time.

YOur prop bottom hub should be just above the water line or bottom of the hull and level to begin with.

Is this the rio 51? Originally the gas boat?

I just would not add weight at this point. If this is the big hull then you are probably underpowered,

Also, sharpen the edge of that prop as well. I do not use a CF prop on big boats with heavy torque...they flex....get a decent 442 and try it.

[SJFE]

Jeff this is the aeromarine Rio 30x6. I'm sending the HW out to be lightend up and have 50% of the stand off removed. I think there is just to much setback on the rudders & strut. Once the HW is reworked I will address the CG. As for power I have a nice 5t plett in the mail tio replace the drill motor.
Thank you for the input. Every bit helps out alot.
Tom

[SJFE]

Hardware and motor pulled. I'll get it sent out this comming week.

[Ctonez]

...I had a thought.
Somewhere on some forum recently someone was griping about the SV27 strut being canted a bit to the left, thinking it was a manufacturing defect.
The strut bracket is actually thicker on one side, causing the strut shaft to tilt slightly to the left (I'm pretty sure it was the left looking at the transom...I'll have to check my hull in the morning...).
Grimracer chimed in saying it is on purpose, to counter torque-roll...it was a remedy to compensate for some of the designs not being implemented, or something to that effect...he went on to mention that with the Rio 51 (I know your boat is different, but it's just a coincidence in this case...) he was able to implement his design corrections by offsetting the strut itself to compensate for the torque roll.
...got me to thinking about your build and how offsetting or shimming the strut might help. I'm totally speculating here...maybe worth looking into further, or maybe someone here has some input on that possibility...?
one more thought - is it possible to soften the throttle curve either on your Tx or ESC or both?
-Corey

[SJFE]

Thanks for the input Corey. The drive line is offset 3/16th already. When the HW gets back and I test I may divert thrust to compensate also. Good thinking!!

[Jeff Wohlt]

That is a very narrow hull. After looking at the pics I can see its certainly is not the RIO 51.

The plett should help pop it up on plane faster but make sure all your weight is as low as possible in the hull. I run some 4T pletts with 12 cells...cool the brushes and stay in the 40-42mm prop to start with....also, they pull some amps so good packs and ESC is a must.

Should be fun once you get it going...sweet looking job.

Keep us posted.

[SJFE]

Thanks Jeff!! I have a decent powersystem and 25c lipos. Once the HW mods are complete I think the roll factor will be cut down quite a bit.

[Ctonez]

...the only other thing that crossed my mind was dual props, but that'd be a pain at this point, especially with the killer Lonewolf rudders.
Boy, it sure does look pretty!

[SJFE]

Thanks Corey. The hulls great scale looks are why I am working so hard to get a reliable setup. As to the duels it was the original configuration I chose. I abandon it due to the 6" beam of the hull. A set of 36mm motors would be way to tight. Another concern I had was prop spacing. Reason being the props would have to be placed very close to the sides of the hull in order to have decent clearance of each other for prop options.

Now all that being said @ that time I was thinking one dimensionally in regards to motors. Just after I set this motor mount I had an idea. What about motors with a smaller diameter??? For instance what about a set of Ammo 28-56-2300s for example. Now in theory I could have the HW modified making the rudder brackets accept struts also. Using some smaller 1/8th CR props a dual configuration may just be possible. The motors would have to be placed with room allowing a 4s pack to run down the centerline of the boat. Another hurtle would be steering servo placement. Maybe it would be possible to use a set of high torque micro servos. Or a set of servos mounted further up the hull with long control rods.In any event torque roll would most certainly be eliminated!!

Now that is something to consider. Lets hear it guys? Opinions?


Maybe a set of these???

TR 28-45 3600kv Brushless Inrunner (WaterCooled)
Kv: 3600rpm/v
Required ESC: 40A
Voltage Range: 6-15v
No Load Current: 1.5A
Mas Load: 45A
Max Power: 300W/60S
Weight: 149g
Shaft: 4mm
Standard size mounting holes enable the motor to be installed in a large range of motor mounts.

Motor has an inbuilt water jacket.