hello I'm Scott Brown with green wind and other home energies as you see right here I've got this
two layers of cardboard that are nice and straight then I have this piece of poster board here it's
got ghost lines on it I found the dead center I pinned it and I've got this stuff for doing
needlepoint type of stuff arts and crafts my wife gave it to me I do have a compass but in
order to draw this fast and have this set up well this is the system I use anyway and I can mark my
dots to show everything quick let's say that go ahead and show you how to draw this out pretty
quick what I've done is I've made my measurements to the inside edge of the brake disk like right
here this edge and then to where the edge of the magnet will be the outer edge the eighth
inch lip all these marks are right here I have these measurements over here the total width all
the way across from edge to edge like here I have these down which is 282 millimeters or 11 and 1/8
and I have 272 to the next stop which is ten point ten and fifteen sixteenths and this one
here is a hundred and seventy-six millimeters at six inches and fifteen sixteenths and one
hundred and fifty eight millimeters six and one quarter inches well all divided in half I wind
up with one hundred and forty-one millimeters which is five and five-eighths we're going this
is radius now one hundred and thirty eight point five millimeters which is three and fifteen thirty
seconds this dot right here is 88 millimeters which is three and fifteen thirty seconds and
between these two dots will be our magnets and seventy nine millimeters which is 3 and 1/8 inches
and while I draw this stuff out and see I got these color coded black is going to be the edge
of the brake discs the metal I'm going to go ahead and change the camera angle and bring this down a
little bit closer for you okay I believe that's good enough alrighty so quickly we'll draw these
out one and this is the other one in black you see well why draw all of this well number one
you can't just start by winding coils you have to find out what the size of the inside of the coil
is going to be and you got to make sure they're all going to fit you're going to be wasting a lot
of money on wire a lot of time and then you're going to have to wind up making another coil
winder this is our eighth inch lip brand-new markers seem to put a lot of ink here it's
alright I'm going to go ahead and use it anyway there's some spots here where it doesn't show
all that a lot of the rest of the measurements on the inside like that we'll put on here when
we need them for right now I think that's good I'm going to go ahead and use a pencil as well
I don't think it's going to show up on the black unless I have the light shining on it just right
we'll make a little bit more finer of a line that I can measure with I know you can't see it on the
camera but I can at least my center point doesn't change each time I draw a line there we go get a
finer line for me and you can use this template to draw another one any type to the outside this is
pinned into two layers of cardboard long as you don't pull too hard that'll stay there for you
nicely all right we'll find out the inside shape of our coil winder so that our coils will wind
up the right size and actually fit within their pie shape that they're supposed to fit in try to
wind your coils first then design everything else around it's going to cause you a lot of grief this
is the first thing that you really need to do is sit down with paper and plan okay as I said in a
previous video number one you have to mark this is not the brake disc we're using but you have
to mark one of your holes as top dead center so you can find out when this one this rotor has
magnets facing north the opposite one has to be south now if I go 1/5 the way around and I line
these things up and go to put them on I'll have a magnet here and a magnet here and they're not
lining up so you got to mark one of your holes as top dead center now also a set around here as you
can see I got the little fins inside one two three four five six oh this one divided out real nice it
was divisible by 12 for 12 magnets also divisible by nine for nine coil placements and that's great
so I use this as my protractor I have a protractor but if you have the right disc and they have a
number of the little fins inside air vents that equal that you can use it as a protractor but for
ease here I set this dead center mat on my ghost lines which I have one here here here you barely
see them you might not be able to see them on the cam I set this in the middle I lined it up perfect
where the top one was sitting here and I marked all those all the way around for my angles and I
have already set them down and I've also marked where top dead center should be I'll be drawing
my magnets in here shortly there we are a little bit of rust nasty from here out I'll come from the
center line here and I'll put the pin back in lay my ruler against it and draw straight out
because the size of the pin is about the width of the pencil mark I'll take the ruler right over to
the edge matter of fact we'll do that right now and we'll get this drawn out and get on the way
with it okay I'm going to draw from here straight on out far enough it's gonna have to go outside
the dimensions of the rotor because the coils do and that's what we're planning with these lines
that straight up that's far enough draw that out a little bit more there we go draw that out
thinking about the width of the pen draw it out lines have thickness and they make a difference
in your measurement other drawing I had so many measurements and lines on there I didn't didn't
expect to be able to come across down camera to tell you what each one of them were this
is these are the important ones and now we get to draw our coil dimension for that we have the
little pieces of 14 gauge wire than it plan on using right this step I have actually measured
both sides just to make sure it's perfectly in the center in between these lines like it's a
fine line sharpie draw the sides the ends are okay these lines towards the middle are going
to be adapted to make because if I wound this out here my coil be all the way out
to here and trying to set them side-by-side they wouldn't fit so this is going to have
to be pulled in and that's going to give me a shape that cuts some of this madness shape
off and will adapt that and that way we'll know the inside dimensions of our coil winder
you
the set of plans that I took my information from
plan they had 12 inch magnet rotors I'm speaking the rotors I'm using our 11 inches that means at
the same rpm that the magnets are passing the coils at a slightly slower speed being about
10% smaller it's off by 10 percent on the speed so I went to this program of mine called rpm at
miles per hour and sorry you can't see the words at the top of the screens got cut off that's
my monitors fault anyway that says diameter of the blade the blood diameter of the blade that
they used was 10 foot I put in 10 foot their circumference is 31 point four one four one
five feet the blades we Carver four point five tip speed ratio and we'll start 2 miles per hour
off it one but they were talking as a cut-in speed for charging and is about 140 rpm well
here in my program that says one mile per hour and we're looking at 12 rpm that's the same all
over each time I do this is going to increase 1 mile per hour 2 miles per hour at 25 rpm
37 rpm at 350 at 4 rpms 63 at 5 miles per hour and 75 RPM at 6 miles per hour let's scoot on up
here there's a hundred and thirty-eight rpm at 11 miles per hour so we're figuring 11 miles per hour
for charging I want a little be a little bit lower than that so I'm going to increase the number of
windings on my coil by about 10% and that ought to bring it down to about 10 miles per hour plus if
I make my prop at 9 foot that's going to give me pretty close to about another 10 maybe 9 percent
so let's test that out D and D and we'll start the application again 9 foot blade gives me 28
feet in circumference I had a tip speed ratio of 4.5 again and one mile per hour let's scan
on down at 10 miles per hour I'm looking at 140 rpm just like I said so there's the other 10 so
I'm figuring right around 9 miles per hour 8 8 to 9 miles per hour I ought to be able to get
my cut in speed which would be a little bit lower rpm getting down here at 11 miles per
hour where we were at the 10 foot we're looking at 154 so a smaller prop spins faster 10% smaller
knock it down about 10% so I'm changing mine down about 20% by adding about 10% more turns instead
of 70 turns on mine I'm going to 77 turns and also one foot smaller prop which is not going
to absorb as much power total out of the wind but it will get my cut in speed a a little bit
early in the amount of wind that I will have out here our winds around here anyway from 5 to 15
miles per hour on the average staying pretty most about 10 and other days they're really kicking up
like tomorrow is going to be 10 to 20 miles per hour all day and some gusts that are going to
go a little bit higher up too bad I ain't got this built by then I'm Scott Brown with green
wind and other home energies alright and here's my notes on my designs here from the designs I
took a found we're looking at 6 to 7 pounds of wire 200 degrees Celsius and double insulated
for your 12-volt machine at a 10 foot prop with a 12 inch 12 inch rotor we're looking at 14 two
strands of 14 gauge wire which is close to about 11 gauge when you put it together and they have 36
turns if I was going to do that I'd have to make that about 40 turns because 10% of 3.36 is 3.6
which would make that about 39.6 we'll call it 40 turns close enough and for a 24 volt machine which
is I'm going to do they were using 14 gauge wire with 70 turns well add 10% was the same as taking
that zero off mix out of seven and we took that to 76 to 77 turns and for a 48 volt machine they were
using 17 gauge wire with a hundred and 40 turns which if you added 10% you were going to do a
48 volt machine using 17 gauge wire you'd wind up with 154 turns per coil and it should fit in
the same amount of space that we have here anyway we're going to get back to design these were some
tips just somehow on to show you on why and how things are a little different if you've said you
the same webpage as I did get your information these are the adjustments down here forty turn
for a 12-volt machine of two strands of 1477 turns of one strand of 14-gauge for
a 24 volt machine and for a 48 volt machine 154 currents of 17 gauge AWG American wire gauge wire
you