How to reduce chine-walking??
07-01-2008, 03:24 PM
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How to reduce chine-walking??
My RIO 51 seems to chine walk quite a bit when flat out (about 48 mph). Are there any rules of thumb as to how to reduce this - apart from slowing down of course
!! Might raising the drive while lowering the tabs a bit help?
!! Might raising the drive while lowering the tabs a bit help?
07-01-2008, 03:40 PM
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RE: How to reduce chine-walking??
If you boat is going 48mph chine walking might be something you just have to put up with ,that said my stepped vee did it quite badly with one prop at full speed but after i changed props she got a little better.A Rio thats doing 48 mph is pretty fast maybe someone else can let you know how theres reacts at those speeds but im thinking its something you might have to put up with.
Mart
Mart
07-01-2008, 07:04 PM
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RE: How to reduce chine-walking??
Try bending the INSIDE corner (closest to the keel) of the starboard trim tab DOWN about 1/8",(use pliers) the loss of speed due to the induced drag,will be negligable,and will do more to compensate your speed/stability (than bending the whole tab) at WOT..... [8D]
07-01-2008, 08:19 PM
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RE: How to reduce chine-walking??
try making sure your trim tabs are all level with the bottom of the hull, meaning they are in the neutral position. Your rudder should be straight up and down. Turns fins should have the bottom of the turn fins level with the bottom of the hull. So everything is straight up and down. Make sure your strut is also level with the bottom of the hull. From after doing all this run it and see if anything needs to adjusted, usually just your strut(stinger). Using a staight edge ruler like the wooden ones from your kids work best to get everything done.
07-02-2008, 03:14 AM
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RE: How to reduce chine-walking??
Never saw prop walk mentioned i think he said chine walk which i take as the boat rolling side to side at speed prop walk is just the boat veering to the right instead of running straight so to clear things up which is it you have chine walk or prop walk?.
Mart
Mart
07-02-2008, 07:25 AM
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RE: How to reduce chine-walking??
ORIGINAL: martno1fan
Never saw prop walk mentioned i think he said chine walk which i take as the boat rolling side to side at speed prop walk is just the boat veering to the right instead of running straight so to clear things up which is it you have chine walk or prop walk?.
Mart
Never saw prop walk mentioned i think he said chine walk which i take as the boat rolling side to side at speed prop walk is just the boat veering to the right instead of running straight so to clear things up which is it you have chine walk or prop walk?.
Mart
07-02-2008, 07:28 AM
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RE: How to reduce chine-walking??
ORIGINAL: mauian
try making sure your trim tabs are all level with the bottom of the hull, meaning they are in the neutral position. Your rudder should be straight up and down. Turns fins should have the bottom of the turn fins level with the bottom of the hull. So everything is straight up and down. Make sure your strut is also level with the bottom of the hull. From after doing all this run it and see if anything needs to adjusted, usually just your strut(stinger). Using a staight edge ruler like the wooden ones from your kids work best to get everything done.
try making sure your trim tabs are all level with the bottom of the hull, meaning they are in the neutral position. Your rudder should be straight up and down. Turns fins should have the bottom of the turn fins level with the bottom of the hull. So everything is straight up and down. Make sure your strut is also level with the bottom of the hull. From after doing all this run it and see if anything needs to adjusted, usually just your strut(stinger). Using a staight edge ruler like the wooden ones from your kids work best to get everything done.
On your RIO, you run with neutral tabs?
07-02-2008, 08:05 AM
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RE: How to reduce chine-walking??
Your fins need to be set as mine are in this pic,as for your prop who sharpened and balanced it? i have the same prop that was done by dasboata on my hydro i also tried it on my stepped vee.Its an awesome prop,the reason i asked who worked on it is they only come butterknife sharp from propshop and not balanced properly at all.
Mart
ps when your boats running at speed your fins should only touch water when you turn.
Mart
ps when your boats running at speed your fins should only touch water when you turn.
07-02-2008, 08:15 AM
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RE: How to reduce chine-walking??
ORIGINAL: martno1fan
Your fins need to be set as mine are in this pic,as for your prop who sharpened and balanced it? i have the same prop that was done by dasboata on my hydro i also tried it on my stepped vee.Its an awesome prop,the reason i asked who worked on it is they only come butterknife sharp from propshop and not balanced properly at all.
Mart
ps when your boats running at speed your fins should only touch water when you turn.
Your fins need to be set as mine are in this pic,as for your prop who sharpened and balanced it? i have the same prop that was done by dasboata on my hydro i also tried it on my stepped vee.Its an awesome prop,the reason i asked who worked on it is they only come butterknife sharp from propshop and not balanced properly at all.
Mart
ps when your boats running at speed your fins should only touch water when you turn.
In the pic, those turn fins don't touch water when the boat's running straight? I guess it's the angle of the pic but they appear to be deeper into the water than I thought they should be.
07-02-2008, 09:12 AM
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RE: How to reduce chine-walking??
Chine walk is often caused by too much of the boat being out of the water. Raising your drive should allow the boat to settle into the water more and may help the chine walk, however you may lose a little speed also due to greater wetted surface. You can also experiment with different props. Doug
07-02-2008, 09:27 AM
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RE: How to reduce chine-walking??
Turn fins should only touch water in turns when the boats moving fast,these work well she turns great runs good too for a weedy motor.I dont use turn fins on my stepped vee and she runs great turns on a dime too,as Doug says settling the hull in the water more will help,did you know that prop is designed for hydros so will create lift which will induce chine walk unless it has rounded tips?,I have same prop on the rockett hydro..Maybe try a non lifting prop.
Mart
Mart
07-02-2008, 10:05 AM
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RE: How to reduce chine-walking??
I'm still fairly new to this whole boating thing, but from I know as problems and ride issues, I can second the comment by Martnofan about the prop causing toomuch "lift". You may want to double check to see if your boat is set up with a Hydro-boat gear rather than a deep V prop.
Also, with my WHH ENFORCER, I get a tiny bit of walk, but usualy its caused by sloshing gas in my tank, and the rudder servo moving a tiny bit with torque on the servo horn, but I changed the plastic servo horn to a metal one, and now I don't get any slop in the linkage.
Also, with my WHH ENFORCER, I get a tiny bit of walk, but usualy its caused by sloshing gas in my tank, and the rudder servo moving a tiny bit with torque on the servo horn, but I changed the plastic servo horn to a metal one, and now I don't get any slop in the linkage.
