Chine walk speedboat

[Starholk]

Hello. My name is peter and im from sweden. I bought a italian boat Albatro 28 with 2 mercury 250hp. I have full hydraulic steering and also hydraulic jack plate.

Its very unstable and when i hit 70mph .its starts chine walk so much that i loose control. Its like balancing with a bicycle. When i look at other hulls they have alot more strakes. I think that is the problem. I think the boat is coming to high on the water line. From the center of the boat to the strakes its 60cm. I think its in the air when i drive fast. If someone is kind to tell me what to do? I am very good at fiberglass and can do almost everything. I dont just have the right knowledge to know what to do. I want to drive without risking my life in about 85-90 mph. Its not a common boat but they race with this in italy. I have contacted the manufactor but still no answer.

Thanks /peter

[johnmiffco]

does it do this in calm/glasy water
and does it do it in 1-3' choppy water also
cannot see what gearcases u have are they cle,production,,,,have lw pu ?
what is the prop shaft height to bottom directly in front of gearcase
and good looking boat btw,,,,

[Merc 2.5]

Look at set up .... setup ,setup,setup. If lower to deep will have Ill handling,,, dont start doin fiberglass just yet , like post above , what kinda prop? Lower?,,, jackplates? Prop to pad distance? Should b able drive on pad , yes it does feel like I bicycle in a way , gets loose ,, then very slight steer input ,

[Merc 2.5]

After another look. Need pic lower ,
Need lwpu and over hub props and jack em up

[XstreamVking]

Might take some seat time to drive it. Also, I would try some other props. Those choppers give a ton of bow lift. Maybe try some cleavers. Or, some performance 4 blades with thru hubs.. The stepped hulls are designed to run flatter than a non stepped vee. Yours has a LOT of ventilation. And I too think it is a very cool boat...

[eli]

Chopper style propellers can make handling issues , especially when trying to drive thru the hop or chinewalk you might want to try some cleaver propellers they are like night and day difference over choppers ,engine height plays big role also

[Starholk]

Yes. It has no pad. When i mean chine walk its bounching from one side to other and look at picture my mark. That hits water surface.
I have driven alots of fast boats and good knowledge on drivning a fast boat. But this is impossible. tried everything. Goes Little better with tabs down.
The boat is made of Kevlar and carbon and weight only 900kg.
Yes. It goes better in waves. No waves and its impossible.

[Whaaaaat]

The boat has no pad? Was it ever intended to go over 70? The boat looks awesome but without a pad I don't any amount of setup or props will help it balance at high speed. Looks to be built as a 70 ish mph wave slicer.

[Merc 2.5]

Got a better pic?

[LakeFever]

More setback gets my vote. Dont listen to me though, im a newb

[Starholk]

More pics. The drives is at top of the jackplate on pictures.

[rochelle howell]

Wellcraft airslot's bigger brother?;)
Got damn, that's a mean lookin' ride!

[AZMIDLYF]

No pad on this bottom. These hulls are designed to run offshore.

447650447651

[AZMIDLYF]

447653

[97 TWISTER]

First off very cool boat!!! But I think you have to be Houdini to keep that balanced. If you have the means to build a pad that's what I would do. I know nothing about these boats but the pic in post #14 show no LWP on gearcase so makes me wonder if these boats are build to ride that high. IMO if this boat had a 10" pad it would be an amazing boat to see set and running. I would think start after 2nd step and transition it to stern. And then when done please build bunk trailer it hurts just to see it sit on rollers lol. Best of luck and I for one would be interested to see what you do.

[Starholk]

Thanks. And thanks for all the help from you guys.

Im thinking of a pad too. Do you think i should build a flat or vee pad. I looked at outerlimits hull and maybe copy that.

[97 TWISTER]

I would build 10" flat pad. I just think it would be so much easier to set and keep on pad. I am no boat builder but have driven my fair share of fast V bottoms so that's where may opinion comes from.

[JrCRXHF]

Very cool looking boat. I want to watch where this goes. My concept does not like smooth water at speed either. It has just one step.

[Capt.Insane-o]

Your boat doesn't like water period :eek:

Vool boat Starholk..Some friends there might have some cleavers to try?

[JrCRXHF]

Your boat doesn't like water period :eek:

Vool boat Starholk..Some friends there might have some cleavers to try?

I think the boat likes water but those black motors on the back have a allergic reaction to it.

[Motv18]

If you’re coming out as much as the boats in the photograph then you’ll have to lower the Motor.

once the propshaft is above the water line you to get massive prop slap reaction. An out of phase twin can rock you off balance.

Youll defintly want want to check balance and height before working glass. If anything don’t slow it down with a pad just add a step lower.

us Americans like pads because most fast boats here are flat bottoms I mean pad. Not that many slick step or strake v

[Starholk]

Thanks. Yes its cool boat but made in italy so it has carbon sparco seat in red snakeskinn. Ha ha. I have bought 4 new sparco seats and new interior in alcantara. And will also cut a bigger hole in the roof. Like the raceboats have.

Yes. The boat dont like water. Ha ha.
Sorry have no friends with outboard clevers to test with. All my friends have inboards boats with bravo and imco drives.

[Motv18]

A bravo is worth a shot over hub is just a hole shot thing once you breach the surface hub or over hub has little effect

[Starholk]

The props are rotation different ways. Both out. I havent droved it in a rough sea yet so i havent got the air under the boat as the raceboats in pics. I have only driven in low sea and its no different how high the drives are.

[XstreamVking]

This is just my opinion. But...... There has to have been a lot of r&d done on that hull. I would not modify it. If it won't do what you want sell it and buy another. That is a very complex bottom.....It's not just an add a pad and it's fixed type of bottom. Not a small undertaking IMO.

[Starholk]

I drove all the way to italy from sweden to buy it. I got a very good price but i dont think its easy to sell if nobody cant drive it. I want the boat and i will try to change something and if that want work then i try something else. Or i copy some other boats hull. If its work for them it should maybe work for me. It cant get worse at it is now. I think its designed only for rough water.

[johnmiffco]

I agree with xstream statement above,,,,
reason I asked in beginning of thread is if it did it in calm water vrsing rough water is,,,,
ITS AN OFFSHORE RACE HULL
only works properly with some rough to hold it straight
with big steps and very wide strakes the hull is designed to lift high out the water to ride on top in the rough so when running in glassy water no hull is touching and no waves breaking on the vee to hold it straightand riding on top waves don't toss it out of water as much ,,,its already out on the tips of the waves
topwater is a smoother ride than riding deep cutting the water,,,,,"racing conditions"

I have built,,,modified,restoed,raced quite a few offshore vees
that last step on back of hull is not a step,,,that is actually the motor offset box,,,
the hull ends looks like 12-16" forward where hullgoes full width with the k planes,,
so no moremotor offset needed as it already built in

next hull was designed as a single I/o or single o/b for skeg to be in the center
this is ur pendelem
twins will work,,,,but takes set up on that hull

for instance the last play hull I put together was a 27 Excalibur with triple 260s
took lots of set up and balancing to get hull to ride on the narrow 6' wide hull 24deg bottom
props were lifting hull out of water to high for control
when got height right and correct props,,,balanced ,ect
still could not go past 70-75 on glassy water,,,as was not designed for that
but would run 100+ in 2'-3' ers and fly level in the rough,,,,,was an awsome boat then,,,,,

reason is the bottom with its big lifting strakes were there to dry the hull to run on top
so motor height is critical and prop design,,,,,
was stated to lower motors,,,that is backwards on this style hull
as hull is designed to lift itself so motors don't need to lift boat,,,
if lower motors with that hull and bow lifting props,,, will surface and lift hull higher,,,,,,,,,,
more out of control
true cleavers lift transom,,,,what u need,,,,as hull needs to stay flat with no bow lift
keep raising motors with that much offset id start 1 3/4 above bottom of hull,,,not the offset box
and keep raising till hull settles the transom and transom rides in the water,,,,
the props are surfacing so gotta get them high enough so the splitshaft surfacing is not lift the transom
that's to make it stable with the twins as the 2 props are lifting more than a single will
but hull will never be fast in glassy water as will chine walk still when airs out,,,
it need the rough to cut the waves to hold it true,,
good luck with boat,,,,,

also with the cle cases with low pu,,,,
when u keep raising motors till it quits lifting transom,,,
theres the point it will start to loose water pressure
as now cases are going above split shaft and not lifting transom,,,,drop motors 1/4" and ur there
correct height to hull,,,,for the rough,,,,,
set up,,set up,,,is the key

[Starholk]

Thanks with that info. Very interesting. I do know very little about cleavers. Any suggestion what to try?

[johnmiffco]

with the old style cle caes,,,probably with 1" propshafts id be trying 28 x 14 1/2 to 15"
3 blade mercury cleavers or os mazcos are cheapest to find used to try
4 blade mercury humpbacks would do best for the hull,,,cost more for testing
then id go to dewald for best props 1nce u find what u need,,,,expensive but knows race props
these are all over hub props,,,like the choppers u have just pointed eared cleavers
can look on the prop section here to see some
I sold the ex caliber last yr to a guy that saw it at a poker run and wanted it when he saw it passing 32-38' boats in the rough ,,,lol
I just sold my last set of props few months ago had 30s and 32s and sold cheap
as don't have small shaft motors any more
,,,,,,,id love to have that hull here,,,,,,,
looks awsome and know will ride awsome in 2-4'ers fast
great candidate for a single new 450r,,,,wont be super fast but ride great
twin modified 300x motors know id would go past 100
again as a fast wave crusher not a calm water high speed hull
28 tuff would be that in that size with the twins,,,,
also if u measure from end of hull (where k planes are) to where motors mount and tell me width of jack plates
I can give u a good start point on motor height

[gotboostedvr6]

Should that hull have props turning in or out?

[Starholk]

with the old style cle caes,,,probably with 1" propshafts id be trying 28 x 14 1/2 to 15"
3 blade mercury cleavers or os mazcos are cheapest to find used to try
4 blade mercury humpbacks would do best for the hull,,,cost more for testing
then id go to dewald for best props 1nce u find what u need,,,,expensive but knows race props
these are all over hub props,,,like the choppers u have just pointed eared cleavers
can look on the prop section here to see some
I sold the ex caliber last yr to a guy that saw it at a poker run and wanted it when he saw it passing 32-38' boats in the rough ,,,lol
I just sold my last set of props few months ago had 30s and 32s and sold cheap
as don't have small shaft motors any more
,,,,,,,id love to have that hull here,,,,,,,
looks awsome and know will ride awsome in 2-4'ers fast
great candidate for a single new 450r,,,,wont be super fast but ride great
twin modified 300x motors know id would go past 100
again as a fast wave crusher not a calm water high speed hull
28 tuff would be that in that size with the twins,,,,
also if u measure from end of hull (where k planes are) to where motors mount and tell me width of jack plates
I can give u a good start point on motor height

you mean from k planes to top of jackplate? Where engines are mount? We measure in cm :D 65cm 25,6 inch? Jackplate is 96cm wide 37,8 inch?
The jackplate is at top now. Can lower it 3,5 inch

[johnmiffco]

looking for distance from end of boat bottom,,,,,thats where the lifting strake ends and at hulls full width of the wetted surface
to the end of the hull where the jack plates bolt to,,,,that distance looks 12" -16" long
then the jack plate offset from hull to motor,,,,, looks to be 5-6" plates
that total length of the 2 will give the starting point of how high to set prop centerline to offset distance

[Starholk]

20” and 5,9”
thanks for helping.
Have tried to find props but no luck yet.

[johnmiffco]

last set of 30 mazcos I sold 500 for the pair,,,some out there some want a lot for old school props
but descent priced 1s don't last,,,lol
approx. 26" offset to bottom
now they only stepped up the offset looks to be 1"
to use the offset to hold transom up when landing off a wave
but aerate while props hooking,,,
lots of theory in these hulls,,,,
if go off of the rule of thumb of 1" rise to every 12" of set back ur starting point is 2" of propshaft centerline to bottom of hull
I would still start @ 1 3/4" and go up as needed
where the strake ends not the extension box but true boat full bottom
here is a pic of the trips with custom 4 blade cleavers
22" offset so center was 1 3/4 above,,,outside were only 1 1/4" as needed the grip in the rough and turning as boat was so skinny
and aerated outside props more when were higher,,,,finding set up is key
447683

[Starholk]

Wow. Thats look cool. :D

i was out and measured and when jack is at the lowest propshaft is 1” above bottom. Then i can raise it 4-5”

[johnmiffco]

raise jack plate 3/4" to start and find some cleavers
as u cannot have props lift bow as them big steps has no hull in water if bow is up
for steps to do their job transom has to be planted

[AZMIDLYF]

447685

[Starholk]

Ok. Thank you very much for help.
Its my first outboard so i dont have so much knoledge.

I have to measure that at propshaft and look at the gauges inside where it goes so i can find the position when i drive.
Hope this works. Little chine walk on gloss water is ok. But now it hits surface from one side to other.
Its Little dangerous. :D
will try it on rough water too then if it feels more safe.

[Starholk]

447685

That look crazy. :D
Christian Cesati. i think he is the son of the boatbuilder.

[johnmiffco]

thats what im talking about
15" 300x motors set up
would be a blast to drive across the sloppy waters,,,,,
may want to call builder they already did the work on the 32
so can give u height for sure and prop suggestion,,,,,,

[Starholk]

thats what im talking about
15" 300x motors set up
would be a blast to drive across the sloppy waters,,,,,
may want to call builder they already did the work on the 32
so can give u height for sure and prop suggestion,,,,,,
i have send message to builder but i only get a question where i was located. Hope to hear some more.

[Starholk]

I found a pair of 14.5x30 cleavers here in marketplace. But they are maybe to big ?

[johnmiffco]

if u looking at the pair 30 mazco cleavers for 600
really good price for em
mazcos I found had better bite in the midrange,,,just a couple mph slower than a merc cleaver
with that light hull and 260 motors probably can pull em,,,
worst case senerio have em pulled back to 28 if cannot get rpms up
u have 250 hp on cowls
what motors do u have

[Starholk]

Yes. But now i maybe have found 28p in sweden. And have found other 28p so i think thats what im gonna buy.
Dont really know much of the motors. Did not get much info from the italian when i bought the boat. It was good price on it so i did not care so much. I think they are 2.4L carb. Think they are old but rebuild 8 hours ago.

[Gorilla0178]

I'm sure its been mentioned, but you can't balance a boat on calm water without a pad. It'll always chine walk looking for a place to balance. Sharp v is good for cutting through slop.

[KIRCHNER]

This is just my opinion. But...... There has to have been a lot of r&d done on that hull. I would not modify it. If it won't do what you want sell it and buy another. That is a very complex bottom.....It's not just an add a pad and it's fixed type of bottom. Not a small undertaking IMO.IMO dont modify that bottom, big mistake. you have the wrong props. im a big chopper prop fan, but not on that hull. my 2 cts, get a pair of trophys, solasl4, not expensive investment, and will make huge difference. 4blades. btw that boat is beautiful, my dream boat. vking is right. maybe turbo 4 blade, rev4.?

[Starholk]

No im not gonna modify it. Im going to try with cleavers.

[intimidatorboats]

you need power steering to make it easier to control chine walking

[Starholk]

you need power steering to make it easier to control chine walking
I have that already. :D

[intimidatorboats]

have you put a straight edge back to front to see if their is a hook in the bottom check from transome 5 ft forward especially out by the chine a hook in the bottom can cause a chine walk

[Starholk]

Hi. Some update. I bought some 4-Blade 15x28p cleaver props. I did my first test run today. I drove in 82mph with no chine walk. There is more speed to get but this was only a short test drive to see how the props works on the boat.
Thank you for all the help i got here.

[XstreamVking]

It could be that the previous owner kept the props he ran and installed some choppers he wanted to get rid of. Almost all of us go faast nuts have a couple of "favorite" props we won't let go of. Good choice of props you made.

[johnmiffco]

[QUOTE=Starholk;3162459]Hi. Some update. I bought some 4-Blade 15x28p cleaver props. I did my first test run today. I drove in 82mph with no chine walk.

glad props worked for u
now time to slowly dial in prop height to what boat likes,,,,
figured the 28 cleavers were a good rpop to motors and hull,,,,,4 blades are a plus
lot better control in the sloppy water,,,
now enjoy and be safe with it,,,,,

[Starholk]

I will try next year what the best settings for the boat is. Now i know it workes. Now i will change the interior and cut out the roof. :D

[Will hedrick]

I will try next year what the best settings for the boat is. Now i know it workes. Now i will change the interior and cut out the roof. :D

Props look great bud

[Glasstream15]

(https://www.screamandfly.com/member.php?108861-AZMIDLYF)
AZMIDLYF (https://www.screamandfly.com/member.php?108861-AZMIDLYF)
https://www.screamandfly.com/images/statusicon/user-offline.png That is one of the best Sig lines I have ever seen on any forum.