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#Post#: 3711--------------------------------------------------
magnet rotor plate
By: happygolucky Date: July 5, 2014, 11:01 am
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i think this should be noted on board..
Lynx asked:Did your machinist drill the holes in the steel
magnet plates? Or did you drill them?
he did..lynx
first magnet plate for 175 alternator was done by me.. hand
drilled an poster board lay out from a picture print with radius
dimennsions.. then double checked by hand.. so there is no
confusion ..
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part one
#Post#: 3712--------------------------------------------------
Re: magnet rotor plate
By: happygolucky Date: July 5, 2014, 11:03 am
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yes . he did ,
i paid for service /labor an steel cost i seal coated . i did
mine on my own plate, poster board print from your print..an
double checked looked fine to me.. used a different vendor an
better machinist ...who did the ones i delivered from same
print! to you all i did was seal coat..plates ...the magnet
rotor plates are to print,
i'am speaking now about my own personnel plate the first 175
alternator build you published on youtube an the vendor i did
not go with....i hand tapped an drilled that plate, he cut it..
i showed you . one screw was very close to magnet edge tight
fit. mine was out of center or not cut proper.. dia. looked
out of sink when spun, different vendor ... you said it did not
matter lenz law would still work an flux was fine.. as where the
magnets.
i'am talking about my layout an your dimension straight from
your print.. one hole or magnet was slightly off ?or was magnet
....i showed you on the first run prototype.. on my plate you
said: you made 5/16 hole in rotor arm for clearance tolerance
for 1 -1/4-20.. i suggested inserting a sleeve you said NO! but
that if i wanted to i could fit to tolerance i did not..
it lined up with 5/16 hole in rotor arm an worked, body washer
pressed into rotor arm as you said, i silicon-ed an sealed screw
an body washer with ss nylon lock nut on the threaded bolt in
mag plate ,should be 1/4-20 x 1 1/2" long SS to get extra lock
nut on JMO they went slightly passed the magnet...not a 1/2
magnet you used 3/8 ....i thought an asked for 1/2" magnets,
for my own satisfaction ... it will not come loose with lock
nuts... i swapped hardware out for all SS . sut said 1 1/4" is
what he used ...i went longer, i put a nylon lock nut on top of
rotor arm an reversed the screw for easy rotor arm removal.. all
screws come up from bottom..
hgl
#Post#: 3713--------------------------------------------------
Re: magnet rotor plate
By: lynx wind Date: July 5, 2014, 12:09 pm
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I was trying to be gentle in a personal message. The steel
magnet plates you delivered to me are terribly out of round. A
child could get closer to center. You should find a new
machinist.
Happygolucky - your posts are almost impossible to decipher.
Spelling, grammar renders your posts very difficult to
understand. You might try being very brief and using a spell
and grammar check.
Sorry if I am being blunt, but the forum is getting cluttered
with your long and difficult to understand posts and
contributors are getting drown out. Feel free to post but
perhaps more brief.
#Post#: 3715--------------------------------------------------
Re: magnet rotor plate
By: happygolucky Date: July 5, 2014, 6:21 pm
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as was i being polite, lynx i was just covering my A$$
...like i said you should see the first one i got from the
other source...you set the magnets out on that plate you know
both vendors .....did it look the same way , now you seemed to
be happy?.. now they are junk? they where all done to your pdf
file print....i watched the whole process made to print .cut
with CNC plasma cutter then drilled and taped to your pdf print
layout specifications....they where not cheap !
i corrected my few misspelled words for you lynx an made it
clear in detail everything that was done.. if you want true
round you will have to grind or lath cut even a lazer will not
be true ...machine grinding powder coating but you wanted
expense down you quoted 22$ in your list of components of the
off shelf you go find it for that.. an buy it..! and i'm being
polite! i did my best as always..
HTML http://www.discountsteel.com/services/Laser_Cutting.cfm?PAGE_ID=100
HTML http://www.esab-cutting.com/the-cnc-cutting-blog/cutting-systems/what-is-the-best-value-plasma-laser-or-waterjet.html
* Lynx Wind Gull 175 Disk.pdf (25.02 kB - downloaded 26 times.)
* SeaGull 175 Rotor.pdf (27.01 kB - downloaded 14 times.)
hgl
#Post#: 3718--------------------------------------------------
Re: magnet rotor plate
By: nessprojects Date: July 5, 2014, 8:57 pm
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Hmmm....I am not getting this....I thought this was a diy
turbine and if so why are we going to a laser cutting shop and
having the disk cut ?.
Why not just get the steel plate by whatever means, mark out the
centre and scribe the circle then spend some time with a angle
grinder and cut it out...Drill and tap the holes then fit the
magnets. Ok it will take 5 times longer but look what you have
achieved and you have worked to your own tolerance plus it is
much cheaper. Time on your project is your own and you don't pay
for it.
There is a saying " If you want a job doing right ... do it
yourself "
#Post#: 3719--------------------------------------------------
Re: magnet rotor plate
By: happygolucky Date: July 5, 2014, 9:09 pm
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they where made to print no tolerance was specified they where
done under water.. i know the process... i just said if you want
to pay more lath an grinding polish to finish is the way to go
.005 water jet is pretty darn good ...but expensive .now they
can be trued
(but is it necessary when i told him about mine ...he did not
seem concerned.. i was, but then i go for perfection..he lynx
made tolerance allowance in rotor arms 5/16 hole to fit for
1/4-20..it is made from wood an aluminum flashing, emt ,etc,? )
with in what ever tolerance lynx desires he must specify... with
one more process it can be made concentric as i pointed out
again mine was not...guess he did not understand ...you could
surely see it spin .. but he want to keep cost at a minimum..
you cant have your cake an eat it too.. i did my best.. mine is
working for a DIY kit you can shear the plate an square them i
think @ness used a triangle...use a compass to lay out hole
pattern an placing magnets...with a jig off center diameter..or
cut slot but no to expensive.. is this a high dollar precision
vawt $1000-$5000 for nasa or a home brew vawt for about 250$
DIY
you do not know the details that went into this i will leave it
at that.. is this experimental or a finished product ready for
market..?
while we are on the subject the strap at bottom has no effect on
wing .. they pull inward with centrifugal force
#Post#: 3720--------------------------------------------------
Re: magnet rotor plate
By: happygolucky Date: July 5, 2014, 9:13 pm
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i agree @ ness did not see your post..
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