Flyer

[peter-curacao]

Jacques,

I'm "lofting" as we speak, I have a little trouble with station 9, in the offset table I have a messurement of 10" from baseline to chine, but I cant determine the messurement from centerline to chine.

Please advice

Thx

Peter

[jacquesmm]

Give me some time, I put that design away last year, I have to find it.

Those old tables of offsets can be difficult to read.

[jacquesmm]

OK, looked at it.
It's not there.
http://boatplans-online.com/plans/BPO_flyer.pdf

That happens with those old plans, you have to interpolate; draw the whole chine line in plan view and interpolate.
My son did the lofting of that Flyer last year but I don;t know where he put the file or if he kept it. It was drafting exercise.

[jacquesmm]

STOP!
I looked again, it is a step. It is a step hull and the step is at 8. 9 is stations superimposed on station 8 to start the step.
Look at the stations view.

Look at the plan view too: you"ll see that sta 8 and 9 are at the location.

I"ll help you more but I am in the middle of a long and tedious weight editing job for a new design.

[peter-curacao]

I think I got it, I outlined frame 9 in white and is on top of frame 8, only thing is using the center line to inner chine measurement of 21" gives me a difference of 1 cm between chine and bottom. (See picture below)

[jacquesmm]

That looks right, it will create the step you see in profile.

[peter-curacao]

Thank you Jacques,

Do you think 9mm ply frames with a width of 80 mm as shown below below will do?
Also you told me the side frames are straight, so I did cut them straight but now I'm in doubt reading the yellow section in part of the plans (also see pic below)

[Evan_Gatehouse]

Hi Peter,

Do you live in Curacao? We happen to be passing through on our sailboat and are anchored in Spaanse Waters!

Best
Evan Gatehouse

[peter-curacao]

Hi Peter,

Do you live in Curacao? We happen to be passing through on our sailboat and are anchored in Spaanse Waters!

Best
Evan Gatehouse

Yes I do are you here at the moment?

[jacquesmm]

It looks like there is camber in the sides, you should follow the plans. I remember that I started to loft it to adapt to our material and probably obtained a slightly different shape.

9 mm frames 80 mm wide would be correct if you use the kind of planking I use. I have to see the stringers and the rest of the construction to give an opinion. Build her like a monocoque structure and she will be light and strong.