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Re: Chine walk question

Quote:

Originally Posted by BenPerfected

Cobra 1,
Is the 80 MPH a new top speed? If so, you may be " running out of bottom" cause by the increased hull lift. In other words, you are only running on the flat part of the hull bottom without the inter strakes touching the water. I suggest you hang the boat on one strap and find the balance point (CG). If the inter strakes are equal to or forward of this point, you may not be able to get control of the chine walk until you lengthen the inter strakes. If the bottom set-up is right/perfect, i believe you should be able to reasonable control a 27" vee to 90-100MPH.

Thanks Benperfected. How much is involved in extending the inter starkes? without doing this can tabs do the same thing? The good thing is i am not worried about loosing speed by dropping my tabs. I have a lot of power left. If anyone knows someone in the lake Havasu area that can help me with checking out my hull,let me know.

Re: Chine walk question

Quote:

Originally Posted by Cobra1

I was thinking just the opposite. I thought that choppy water would start the chine by rocking my boat side to side. I was also thinking that the harder i held the steering straight the better. Thats why I'm never afraid to ask questions. I'm sure a lot of people reading this thought the same thing.

Chine walk is actually, more balance related than enviromental. You need to balance the boat on the pad. The problem is that your boat is falling off of this point. When the ball falls over the lifting strakes contact the water and produce lift. The lift pushes the hull up and it tips over it's balance point to the other side and thus starts a chain reaction. This reaction will continue to get more violent until something changes. Dragging tab gives you two out riggers for support, but the drag will slow you down. Glassy water never provides any lift for the strakes so the boat is truly balanced on it's pad which is why this problem shows up more often in glassy water. When the boat starts to fall off, a slight steering correction will help to tip it back up right. It's like riding your bike at slow speed. Yea, you could put training wheels on so that anybody can ride the bike, but you'll never go fast [and turn]. Or you can learn how to balance the bike. You know that if you start to tip over, you two basic choices. You can put your foot down and push the bike back upright, but if you are going fast this could push the bike over for a painful crash. This is just like the lifting strakes hiting the water. The second choice is to adjust the steering so the bike stays balanced. With a little practice the minor steering adjustments become auctiomatic. You are trying to do the same thing with your boat.

Before labbing your prop, try a Hydromotive Q4. The Q4 has less bow lift than the Bravo and that really helps calm the chine walk down.

Re: Chine walk question

Thanks Cord. Well said.

Re: Chine walk question

Cord, Ditto to what Cobra said. That is the best explaination I've seen.

Makes me itch to get the ol' Hydrostream out and do some 'walkin :eek: :eek: :evilb: :evilb: :evilb:

Re: Chine walk question

Quote:

Originally Posted by throttleup

It is possible that you are experiencing this because you are running at 4200 RPM which may be close to your peak torque. Therefore torque loading and potentially causing ill behaviors. So combating them and softening them would be the objective.

Julie

That answered my problem........ :evilb: My boat does it really bad when I run a bravo 1. It all goes away when I put a mirage plus on. But its one of those give and take situations.

Learn a lot today from this post :drink:

Re: Chine walk question

When I had my 25 Eagle, I started to get a chine walk at 80, I could steer the boat ever so slightly to the left or was it the right and it would go away. Was I under control? No. I think thinning the blades on the propeller would help. Longer properly placed tabs would help. But if your just in it for this year why spend the cash? Maybe you could go ask some of the bass boat guys, they are experts at handling chine walk.