Mono Hull Cornering

[damiandownie]

silly question but would like to know. I have a mono hull. When i turn the boat hops and rolls to the right. is there anyways to fix this with a skeg in the center of the hull?

[charliet591]

I have an old K&B 3.5cc outboard, do you know I can get parts for it?
Thanks

[damiandownie]

sure do rcjets.com.au

lol you never answered my question haha

[RickE]

sure do rcjets.com.au

lol you never answered my question haha

Before we can help we need some additional info on your boat. Does it have a surface drive or submerged drive or maybe an steerable drive on the transom? Also, are there any trim tabs or turn fins on the back of the hull? In most cases only crackerbox monohulls (almost flat bottom) use a skeg setup so let us know and we'll go from there.

Rick Eyrich

[damiandownie]

its a witchcraft V 49Inches, it is a stock zenoah g260PUM running a surface drive setup, i use an octura X472. the rudder is placed on the right hand side of the hull (the rudder is in line with the right hand engine rail) The rudder sits back about 100MM (10CM) from the transom. It doesnt have trim tabs on it, i have trim tabs here that i could use though, just not into drilling the holes again lol, but if i have to i will.The bottom of the hull is a v the whole way without any channels just smooth the whole way along, except for the runners along the bottom i have a spin fin on the right hand side that i can adjust if need be, if theres anything you need to know ask me

cheers

[damiandownie]

who reacons that this manifold ( ZR C CNC Performance Intake Manifold Block) actually increases performance even slighty? and if so how much would you expect in a percentage wise

[Ron Olson]

It would help if you try to ask only one question at a time as I see that you already made a thread on the carb isloator block.

From what I see, the boat sounds like it is set up correctly on the transom. Hopping can come from trying to turn too tightly too fast or the CG being too far forward.

[damiandownie]

From what I see, the boat sounds like it is set up correctly on the transom. Hopping can come from trying to turn too tightly too fast or the CG being too far forward.[/QUOTE]

Would it aid in turning the response time down on the handset so i to get a nice clean turn. the engine is about 13.5 inches from the transom

[Ron Olson]

You can turn down the dual-rate on the transmitter or just don't crank the wheel do far. Sometimes it's nice to have extra steering if you need it. Some of radios have a D/R over-ride button.
Where the engine is isn't an accurate way of finding the center of gravity, see if it's in the area of 27-30% forward of the transom. There are too many other variables that can affect that like the pipe, weight of equipment in the radio box and transom hardware.

[damiandownie]

very fare point, i have not actually tried balancing the boat with all the new hardware, ill get on to it and let you know, i have to move a few things before hand to try and balance the boat

[RickE]

very fare point, i have not actually tried balancing the boat with all the new hardware, ill get on to it and let you know, i have to move a few things before hand to try and balance the boat

Just a thought-you might also consider the placement/size of your fuel tank, bag, etc. into the loop as well. If the hull acts the same with either a full or low amount of fuel onboard you'll know there's no problem with the tank/bag's placement in your mono.

Rick Eyrich

[damiandownie]

Just a thought-you might also consider the placement/size of your fuel tank, bag, etc. into the loop as well. If the hull acts the same with either a full or low amount of fuel onboard you'll know there's no problem with the tank/bag's placement in your mono.

Rick Eyrich


The bag is perfect spot then as nothing is changing as the fuel deminishes. how is center of gravity determine? engine distance from transom divided by boats length (all measurements in inches)

[damiandownie]

the hulls cg is around 27% it still does hop, i have reduced the amount of the steering down on the radio and the speed of it and it still does it but not as much as it used to be