Chine walking

henryfreston · 03 June 2013, 23:09

Is this just where the boat rocks from side to side at high speeds? If not what is it and why is it bad?

Nos4r2 · 03 June 2013, 23:22

Quote:

Originally Posted by henryfreston

Is this just where the boat rocks from side to side at high speeds?

Yes.

It's bad because it can end up in a full on 'tankslapper' and spit you out.

For 'tankslapper' see here:-

[Motorcycle Accident]TT-Tankslapper-19sec - YouTube

whisper · 03 June 2013, 23:33

Chine walking can be very bad!

It happens when the boat lifts so far out of the water it will start to fall to on side or the other, when it touches the water it kicks back the other way and when it touches the other side it does the same, it will get worse until you slow down so the boat lowers in the water giving you more stability.

Chine walking can throw you out within a second so it's best to know the signs and back off early

Hightower · 03 June 2013, 23:46

I wouldn't recommend backing off the throttle too quick either as it can cause the bow to dig in and spin the RIB like a handbrake turn. Much better to trim the engine down or in so that you wet the hull more.

whisper · 03 June 2013, 23:58

Quote:

Originally Posted by Hightower

I wouldn't recommend backing off the throttle too quick either as it can cause the bow to dig in and spin the RIB like a handbrake turn. Much better to trim the engine down or in so that you wet the hull more.

Good call

Rogue Wave · 04 June 2013, 00:10

Are you referring to a specific boat as your Honwave doesn't really have chines?

Chine walking is dependent on a few things sea conditions, wind conditions, boat setup and design

To be honest I always found that most of the time you can get through chine walking but you need gentle hands on the steering wheel and trim button as Andy says and this lets you keep most of your pace as well

henryfreston · 04 June 2013, 07:15

Quote:

Originally Posted by Rogue Wave

Are you referring to a specific boat as your Honwave doesn't really have chines?

Chine walking is dependent on a few things sea conditions, wind conditions, boat setup and design

To be honest I always found that most of the time you can get through chine walking but you need gentle hands on the steering wheel and trim button as Andy says and this lets you keep most of your pace as well

I am talking about a searider 4m, I here a lot about them chine walking above 35 knots!

Cookee · 04 June 2013, 08:13

Quote:

Originally Posted by henryfreston

I am talking about a searider 4m, I here a lot about them chine walking above 35 knots!

which is well above the speed they were designed to go!

Rogue Wave · 04 June 2013, 08:27

1 wanted to say that!

it's going well what engine is on it?

9D280 · 04 June 2013, 09:32

Quote:

Originally Posted by henryfreston

Is this just where the boat rocks from side to side at high speeds? If not what is it and why is it bad?

this is a wee description I wrote a while ago. Post 8 if it doesn't automatically take you there.

http://www.rib.net/forum/f8/chine-wa...tml#post421932

henryfreston · 04 June 2013, 17:25

Quote:

Originally Posted by Rogue Wave

1 wanted to say that!

it's going well what engine is on it?

I haven't got one, YET!

I just see quite a few people claiming their seariders god 35 knots +

whisper · 04 June 2013, 17:36

My SR4 deluxe did 33 knots with a Yam 40 ptt 2 smoke

Avon Searider SR4 Yamaha 40hp - YouTube

henryfreston · 04 June 2013, 17:39

Quote:

Originally Posted by whisper

My SR4 deluxe did 33 knots with a Yam 40 2 smoke

Avon Searider SR4 Yamaha 40hp - YouTube

Yeh I seen that video, nice one. You commented saying WOT was around 35-36 knots?

Errrg I have been debating for months and months whether to sell mine I am pullin' me friggin' hair out

What shall I do? The practicallity with the SIB because I can fit 7 adults in or the speed, sea handling and comfort of the RIB. I am so scared to tell my parents I want to sell up....Again!

henryfreston · 04 June 2013, 17:40

Just to say whisper I love that vid of you in the y class vs the jet ski, I have watched that so many times!

whisper · 04 June 2013, 17:47

Quote:

Originally Posted by henryfreston

Yeh I seen that video, nice one. You commented saying WOT was around 35-36 knots?

Errrg I have been debating for months and months whether to sell mine I am pullin' me friggin' hair out

What shall I do? The practicallity with the SIB because I can fit 7 adults in or the speed, sea handling and comfort of the RIB. I am so scared to tell my parents I want to sell up....Again!

They can go faster but that would be with the current so in hindsight 35-36 knots land speed wouldn't be possible with a 40, a few of the guys have SR4's try Matt h or Chris Moody for more info as they love theirs

They are a really fun rib

Quote:

Originally Posted by henryfreston

Just to say whisper I love that vid of you in the y class vs the jet ski, I have watched that so many times!

This one

Ex RNLI Y Class vs Jetski in a Force 8 Gale! - YouTube

henryfreston · 04 June 2013, 17:49

Quote:

Originally Posted by whisper

They can go faster but that would be with the current so in hindsight 35-36 knots land speed wouldn't be possible with a 40, a few of the guys have SR4's try Matt h or Chris Moody for more info as they love theirs

They are a really fun rib

This one

Ex RNLI Y Class vs Jetski in a Force 8 Gale! - YouTube

that's the one, was just watching it now. That must have been bloody freezing!

So realistically you are looking around the 32-33 knot mark? It will still feel a whole lot quicker than the 22-23 knots I get out of the SIB!

whisper · 04 June 2013, 18:42

Quote:

Originally Posted by henryfreston

that's the one, was just watching it now. That must have been bloody freezing!

So realistically you are looking around the 32-33 knot mark? It will still feel a whole lot quicker than the 22-23 knots I get out of the SIB!

Sr4's are the best rib in there class, they are fast and fun and you can also go on cruises with the larger ribs (weather permitting). However they can be wet and wild too so have a go in one if you can, I'm sure you will love it

SR4's ride high due to their deep V hull and they tend to bounce from one tube to the other in the chop so I don't know if this is really classed a chine walking or not

If you were to get one with a yam 40hp I'm sure that you wouldn't want to go any faster

henryfreston · 04 June 2013, 18:50

Quote:

Originally Posted by whisper

Sr4's are the best rib in there class, they are fast and fun and you can also go on cruises with the larger ribs (weather permitting). However they can be wet and wild too so have a go in one if you can, I'm sure you will love it

SR4's ride high due to their deep V hull and they tend to bounce from one tube to the other in the chop so I don't know if this is really classed a chine walking or not

If you were to get one with a yam 40hp I'm sure that you wouldn't want to go any faster

thanks for the advice. I have talked to so many people about it. The problem is you really have to just commit and sell. I keep seeing seariders I would love to own but because I haven't had the balls to sell up I haven't been able to purchase it.

How many people can you get a a searider comfortably? Would 4 people fit in for a short 10-15 minute journey?

henryfreston · 04 June 2013, 18:54

How much should I expect to pay for decent searider with a 1990-1996 yamaha on the back?

Nos4r2 · 04 June 2013, 19:47

About £3000-£3500 for a good one.

Mine had a Mariner 50 2 stroke on, I clocked it at 44mph with no tide run (gps didn't show kts) and was clocked at 39 knots as well on another occasion.

There's very little in the water at that speed