pencil roll

[2old2moto]

i have a stv copy the center sponson is not perfectly flat and it has a pencil roll similar to an allison ,,,the ??????? is should i flatten the bottom or leave the pencil roll in place,,,,i have been told that the pencil roll will help the nose stay down to HELP prevent a blow over...i need to know what to do so i can get started...

[BottomsUp]

Call Jack

[2old2moto]

jack has left the building lol ,,,couldnt get him on the phone.... i have talked to a few people about this and have got different suggestions everytime.....i am ready to say the heck with it

[BottomsUp]

The pad on the Euro I had was a true 90 no pencil roll. To rely on one pencil roll and say it would hold from blowing over is a bit much. One gust of wind will cancel out a pencil roll.lol

Another person to ask would be Brett Vanderwald. I think his tag is etec1 here?

[RB in NM]

Who made the hull? Others here may know information on it......
RB

[Da Bull]

You don`t say what year or model STV you have but usually any STV don`t have a problem with transom lift which is what a pencile roll is for. The early STV pointed nose (same as Laser LTV) would bennifit from adding to the depth of the pad but for the intire length and not just the last few inches.
Having driven several River Rocket`s i can`t say as to when i ever drove a better driving boat and they all were just as they came out of the mold, No lip. Allison`s on the other hand do bennifit from the lip and in fact some are made with it.
I guess it`s your choice.

DB

[2old2moto]

its not a stv its a aerodyne which from what i have heard so far is the same as a mirage but irreguardless the bottom of the center sponson has three 1/16 inch waves in it ,,,starting from the rear of the boat going forward ,,i have a 7 foot level from the back i have a 1 foot long 1/16 inch gap then the bottom touches the level for about 4 inches then another 1 foot gap 1/16inch and then about 5 inches touching the level and then another 1 foot 1/16 inch gap and then its flat ... i was going to flatten it out to try and reduce the porpoising but i have been told to go flat,,and then someone else said leave the roll ,,,,and someone else said leave it alone and go ride ,,,so i dont know what to do but whatever i need to do i want to get started and not miss the whole summer like i did this year

[patchesII]

That's not a pencil roll. Those are rockers in the bottom. It must have a nasty porpoise. Flatten all that out at least 5-6 feet going forward from the transom.

A pencil roll is a very small lip at the very back edge of the pad.

[BRB]

if its a stv leave the ball there....if u sand it out it will drive like crap...and possibly blow over....fact

[2old2moto]

That's not a pencil roll. Those are rockers in the bottom. It must have a nasty porpoise. Flatten all that out at least 5-6 feet going forward from the transom.

A pencil roll is a very small lip at the very back edge of the pad.ye its a ride from 60-75mph but after that its good but it sux trying to cruise....the dude i got the boat from said it was a pencil roll but looked more like a hook to me (x3) ,,, i am new to all this fast boat crap so i am trying to learn without killing myself ,,,,,,,,,,,,,,,thanks for the help

[BRB]

the pad has a "ball" built in pad....u do not want to mess with..im tellin ya ask around more see what the stv guys tell ya....ive own a few and know one that this was takin out.....boat is no longer around...just my 2 cents...its your boat

[2old2moto]

the pad has a "ball" built in pad....u do not want to mess with..im tellin ya ask around more see what the stv guys tell ya....ive own a few and know one that this was takin out.....boat is no longer around...just my 2 cents...its your boat
So I flatten out the first 2 and leave the one on the back alone

[jphii]

its not a stv its a aerodyne which from what i have heard so far is the same as a mirage a


So I flatten out the first 2 and leave the one on the back alone

If it is the same as a Mirage get rid of all of it. Dead flat all the way, with sharp edges.

[catfish123]

There ya go.........take your pick of answers cause you sure got em all.

[2old2moto]

There ya go.........take your pick of answers cause you sure got em all.lol that is the problem i still dont know what to do ,,, i tried a offshore prop today and it was a little better but had a few ndes,,,,,, i am putting new bushings and solid mounts in this week...