Motor Boat Heeling At Speed
Discussion
Very new to anything boat related sp be gentle...
I have a Terhi Vario F45, with a yamaha 50 on the back. A couple of times now running it in the coastal water here in Norfolk, i've felt it heel over, usually port side down, at higher speeds. It's enough for me to back off, after having shifted my weight to the right of the driver seat to try and correct it.
The boat is rated to take this engine (at its very limits), but could it be that the twist of the propeller is causing this? Is this a common issue to speed boats if something is wrong? I tend to avoid trimming up too much, as its all very new to me.
Any ideas welcome!
I have a Terhi Vario F45, with a yamaha 50 on the back. A couple of times now running it in the coastal water here in Norfolk, i've felt it heel over, usually port side down, at higher speeds. It's enough for me to back off, after having shifted my weight to the right of the driver seat to try and correct it.
The boat is rated to take this engine (at its very limits), but could it be that the twist of the propeller is causing this? Is this a common issue to speed boats if something is wrong? I tend to avoid trimming up too much, as its all very new to me.
Any ideas welcome!
I've only ever used it so far with people in the boat, evenly positioned, and it takes on that posture when up at high speed. i'll see if I can get a solo run in due course - its centre console boat, but yes i've always run it very trimmed down so far as i'm getting to grips with the trim settings.
More than likely prop torque. If you're running a right handed prop, it's quite normal for what you're describing to happen as it's more efficient in the top right hand portion of it's rotation which cause progressively more lift on the starboard side (more port list) the faster you go.
Just trim the engine out once you get on the plane - this will reduce the prop's ability to produce this effect.
If you're running a left handed prop, you'll have to ask someone else!!!
Just trim the engine out once you get on the plane - this will reduce the prop's ability to produce this effect.
If you're running a left handed prop, you'll have to ask someone else!!!
The motor may not be mounted quite right, it's as much an art as a science getting an outboard boat to run correctly. Also if it's at the top end of the power capacity of the hull it may just be marginal stability. Go out solo on a calm day and experiment with the trim at a range of throttle settings, see what happens as you move from fully down to fully up and back again, especially the effect on how the craft feels in turns and the change in boat speed as the boat becomes optimally trimmed.
As we're talking about a fast boat I'll be a safety bore and hope everyone's wearing a lifejacket, at least while the boat is under way, and the helm is using the kill cord.
Do you have any qualifications? RYA Powerboat 2 should be a minimum, consider getting up to Day Skipper. If you don't like the idea of formal quals perhaps hire an instructor for 1 to 1 instruction on your own boat for a few hours.
As we're talking about a fast boat I'll be a safety bore and hope everyone's wearing a lifejacket, at least while the boat is under way, and the helm is using the kill cord.
Do you have any qualifications? RYA Powerboat 2 should be a minimum, consider getting up to Day Skipper. If you don't like the idea of formal quals perhaps hire an instructor for 1 to 1 instruction on your own boat for a few hours.
Edited by hidetheelephants on Monday 11th July 23:26
Gassing Station | Boats, Planes & Trains | Top of Page | What's New | My Stuff