RC boat problem

Built a boat - All looked good, ran well, but then - very strange. I've put this clip together. Got some feedback and advice from a man in the know. Speed demon type bloke. He's got a few boats - Fast Electric Vintage RC boat (Good clip). The problem seems to be the propshaft angle. Slow acceleration, no problems, hit the throttle and it dives !!! Surprised me. Didn't expect it. I think I need to make a few alterations.

Category:

Education

Tags:

• rc
• problem
• racing
• prop
• wooden
• model
• scratch
• build
• canal

[ohmygoditsnate]

transom warp

[andybuz]

Not sure what transom warp is, although warp and transom make sense

I guess it's hull frame distorting and causing the transom to flex or distort.. The transom and frame are glued so I can't see any flex. I'm still on the aeration/ prop rotation theory.

[DemonGaaraV21]

look like a well built r/c i must say good job

[andybuz]

Thanks, I'm sort of happy with the boat, but not quite.

[Zappyboy12]

looks to me like you have somthing moving aboun inside the hull ?

correct me if i am rong

[andybuz]

No everything is secure. Prop rotation direction starts the problem off when the revs increase, or a hard rudder turn . Then as soon as the air gets in, it goes wrong. I'm looking at trim tabs to keep an even keel. Roll on summer time. I'm getting bored with the cold

[rc4wd101]

to much torque in the motor maybe put some led weights to stop the roll

[20057468]

ha ha ha so funy

[pokos57]

you may reduce the speed before turning as well

[robthatguyx]

the thing at the begginging is because our turning to fast for the boat to handle try a lower profile on your nxt and have a aluminumfin to keep it stablized on the left or right side

[adityagraphics]

@andybuz

I think the size of the rudder is too big compared to weight of the boat. Fix a small size rudder (leangth wise atleast) which won't drag your boat when you make a turn.

[seashrimp2]

your prop rotates counterclock wise so you might want to offset the prop shaft from centerline at the motor to maybe 1 to 1.5 degree's to the right side right at the prop

[SerdnessX]

0:10 is funny that sound of him xD

[beerpongmasterss]

its top heavy, just place en little weight at the very bottom when possible,

[rcplanecrazy]

my guess would be that youve used a straight shaft so the prop is on a downward angle under the boat.

So when you boat gets on the plain the angle of the prop is pushing the rear of your boat upward so its trying to nose dive all the time.

I recently built a similar boat with the same prop and ive done some research and i think a piano wire shaft might fix your problem look it up on google

[bosanac2nv]

if its wood then i think that the wood at the front has bent but not noticable coz wood contracts and retracts when wet

then dry