This week, it's all about building the rudder, which will be stern hung, have a NACA 0015 profile, approx 20% balance, and top and bottom endplates. And, there's a new tool tip!!! This is the story of the building of a Jay Benford designed, 31.8ft, junk schooner-rigged cruising sailboat. The videos are a week-by-week record of the build as it progresses and aim to show as much detail as possible of the various aspects of the build. These videos take a lot of time and effort to make, in what is already a time-intensive project. Your support in watching, subscribing and sharing these videos is very much appreciated. You make a real difference!! If you'd like to throw a few bucks in the boat building kitty in appreciation of the efforts here, you can do this by; Joining the Patreon crew - https://www.patreon.com/sv_tapatya Supporting us on PayPal - https://www.paypal.me/svtapatya SV Tapatya merchandising - https://www.svtapatya.com/shop.html or via the tips jar; http://www.svtapatya.com/the-tips-jar.html Music tracks "Sit and Wonder", "Ocean View" and "The Great Divide" available on iTunes, Amazon etc. EP "Shake a Leg", album "Out of the Moloch", single "Ocean View". Check out Hazel's music at https://music.apple.com/us/album/1503250522?app=itunes Music from these videos is available from: https://ynotb.bandcamp.com/album/the-sv-tapatya-tracks Thank you :-) Tony

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oh

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from

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tonight i never know

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see what it's about

i said

hello i'm tony this is sv tapatio we're

building a cruising cell builder you

know

a sort of fairly traditional cruising

sailboat designed to accommodate

two people in comfort and and crews

travel around

that's the idea and uh let's see what's

been going on shall we

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so

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yeah the main thrust this week has been

this rudder

which as you can see is making good

progress

starting to get a bit of the airfoil

shape to it

there's a couple of things to talk about

let me just

let me just talk about this you'll

remember this this is the

the nac a nasa naca naca don't know

naca 0015 profile at least

an approximation there of and i'm using

that to

by fixing that down the center line

which is somewhere around there

using that to work out where i need to

glue pieces on to build up this profile

it's not quite on the center there

somewhere

so from that i can when that's screwed

in place

i can take a straight edge and i can see

for example this line that i've drawn

here i can see that's where that comes

in contact with that profile there

so the next piece needs to start here

and up that line there start there so i

know i need to glue a piece on between

those two lines there

um so that allows me to build this

profile and then obviously

playing it sand it to shape coming on

very well i think

a couple of thoughts about this

the chord length here is

some nine centimeters more than the

chord length here

which means that the whole thing needs

to do that a little bit

and actually theoretically means that it

would be a little bit fatter a little

bit wider here that would be here as

well to

keep it all in proportion

um so that makes for some careful

thought and one of the things i worked

out was that i drew a

series of lines on here that

converged as it got up so they were all

half a centimeter close i had 18 lines

each and half a centimeter closer at the

top and

the bottom that gave me that shape

really allowed me to picture it in my

mind

that was a very useful exercise coming

on well

one more piece of 15 mil glue one here

and then another thin one

just up the middle i believe to get the

full profile

as you can see it's taking shape

i cut this slot in here

15 millimeter and

something like that will go in there

um clearly shaped much better than that

this isn't the shape of it for this

and a little bit deeper as well this

this is the top

of two end plates one on the top one on

the bottom

that stick out horizontally

and the idea of the end plates is

says that it improves the and you can

imagine

it improves the water flow over the

airfoil

portion of the rudder and apparently

makes the rudder significantly more

effective having

end plates so that's ready to go in the

end plate there

these will be epoxy limb and as i say

shaped

an implant on the bottom to come as well

um but rather coming on well i think

and perhaps the last thing that will

happen is that there'll be cheap pieces

on here that extend the top up

further cheap pieces either side

so the tiller fits between them and

allows the tiller to pivot a bit

but actually it's looking pretty good

doesn't it it will obviously be glassed

over

a little fill probably put a couple of

layers of glass over it

it's getting pretty substantial and

nearly there

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you

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so

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ah

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um

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now

if you like these videos please uh hit

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so

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foreign

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a little tall tip and funnily enough a

few weeks ago i was watching bruce on on

mistress and he had the same piece of

kit and and i'd been thinking about it

for a while

getting one of these sharpening guides

for chisels and planer blades

and i invested in it and on the side it

tells me

various things it says chisel projection

it says 30 millimeters equals 30 degrees

40 millimeters equals 25 degrees

or for plane blades slightly different i

think it's at 38 millimeters is 30

degrees

very very nice so i bought that this

this guide

and also bought on amazon this one

a diamond stone and it wasn't the

the most expensive diamond stone it's

quite a reasonable price and

it's got a coarse side

and a fine side

and it's very good it's very good if we

just uh

just pop the chisel in there and as i

say what did it say chisel projection

we're looking

at 25 degrees i think on these

40 millimeters so we get it to

project 40 millimeters out there like

that yeah something i've learned is that

this screw needs to be tightened up with

more than your fingers

there's a screwdriver on it and that's

how that

sets on there got a roller on there

these diamond stones diamond stones

don't need any

liquid and away you go just

in the past i've always tried you know

having my finger under there trying to

keep the

angle constant but you know see it works

but these things

have quite an improvement and just

you know away you go and just don't need

any sharpening because it's

already razor sharp it does a brilliant

job of keeping it things straight

getting you a straight sharpen across

there and

that's sharp very very good really

recommend it

i think this was somewhere around 40

euro to diamond stone

and for any chisels or plain blades that

are

out of shape a bit you can shape them up

effectively with the rough side

i'm gonna sharpen with the smooth side

of course

and the little guide i think that was

about 20.

i bought bought this from a a german

site

that sells fine woodworking tools i

didn't get this one on amazon

schmidt fine tools or something i think

very good site

got some great kit on there and that is

very good

i really recommend them actually that's

it for this week

thanks for watching as i say give us

your thumbs up

leave a comment it's always nice to hear

from you appreciate those comments

and uh yeah massive thank you from me to

everybody who supports the channel

be that on patreon or paypal or whatever

and uh we'll be back see you soon bye

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are

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