I've had a couple of calls from Mylow this
morning. I'm going to be giving a more full report later today, but for
now I wanted to pass on some crucial information for those of you wanting to
replication Version 2.0 shown last night.
The polarity of magnetism of the
rotor magnets is not what I had presumed. It is not through the
length. It is through the thickness. The top is N and the bottom is
He said "Radio Shack used to sell these like
crazy." Maybe one of you could get on the phone with Radio Shack and get
the part number, material, and dimensions and magnetism polarity specs, and
possibly talk them into bring them back into stock. But before you tell
them why you're inquiring, get the specs. Then you can ask about the
possibility of getting them back into stock. Feel free to point them to
our PESN story to let them know why. If anyone starts gouging, then other
magnet distributors can beat their price. We've got a number of entities
interested in being our recommended supplier for these. We will base our
recommendation on price, reliability, service.
Mylow has already told us that the polarity of
magnetism of the stator magnets is from leg to leg, as reorientation through the
magnetizer that AllMagnetics.com lent Mylow.
He said the bottoms of the rotor magnets should
have as much contact with the surface of the aluminum as possible.
The dimensions (remember, this is Mylow speaking,
he doesn't do tape measures) of the Rotor magnets are approximately 1/2 inch
thick (both dimensions) by 2.25 inches long.
He thinks the stator magnets are about 2.5" long
and about 3/4" wide.
[One of you who has the screen grab and measurement
skills should calculate the magnet sizes from the video shots. He gives
some good top, side views that should make this fairly straight forward.
We know the rotor disc is about 17.8 inches in diameter. By the way, for
those of you who are puzzled by his finger size compared to the earlier magnet
dimensions given, Mylow is very short -- around 5 foot; hence the hand-magnet
ratio will be different that what might think at first.]
He thinks the motor would have been much stronger
if the magnets went all the way around (minus one position [what he told me when
I met with him in Chicago]). He said when you get that configuration,
which is what he did for the BlackOps, it's hard to get the thing to
The difficult part of this is getting the spacings
right -- between the rotor magnets and between the rotor magnets and the stator
magnet, and the position of the stator magnet. That's what took him three
days to get right, and he has a knack for this stuff. "But once you get
it, it's easy [to replicate to another]."
(he said that after 3.5 days of trying he couldn't
get the "cupcake" to run because it wasn't aluminum and the steel in the
I'm working on a Version 2.0 set of plans.
That's my primary task for today, even before I do a write-up on my
conversations this morning with Mylow.
I know there are a lot of people anxious to get
going on replications of version 2.0, and I want to get as much information as
we have compiled for the purpose.