Thane Heins Perepiteia.

[The_Angel]

These Ryobi grinders can go up to 3,500 RPM. Thane has never allowed it to go anywhere close to that speed since he had a few magnets fly off in a demo once and ever since has been real careful. I just wanted to see what would happen at around full RPM. Now we know Thane is right. So be careful.

Luc

Is glue the only option for affixing the magnets?

No, Epoxy is an added extra to help hold. If you look at my picture of the plastic rotor, I had 2" holes right through the 1/2" rotor to hold the magnets in place plus the epoxy all around each side of the magnets on the rotor.

Luc

Take a look at these magnets.  Perhaps they will assist with safety issues at high speeds.


Dimensions: 5/8" od x 1/8" id x 1/4" id x 1/8" thick
Tolerances: ?0.002" x ?0.001" x ?0.002" x ?0.001"
Material: NdFeB, Grade N42
Plating/Coating: Ni-Cu-Ni (Nickel)
Magnetization Direction: Axial (Poles on Flat Ends)
Weight: 0.320 oz. (9.06 g) (per pair)
Pull Force: 22.67 lbs
Surface Field: 3010 Gauss
Brmax: 13,200 Gauss
BHmax: 42 MGOe

I can get bigger ones of course, but the idea is the same.  What do you think?

[polarbreeze]

... or at least long enough for PB to race to the patent office and file on behalf of the spooks - right PB?

Right, JS. In fact we already captured the most important intellectual property from this exercise and it is already claimed on behalf of Her Majesty. Once we perfect this technique of advancing and describing science we will no longer need to protect or encrypt any of our secret materials because they will be completely incomprehensible to our adversaries even in their open form. This is an extraordinary breakthrough and a triumph for national security.

PB

[JustMe]

Sigh.  Thane already made the OU/Loonie joke.  I feel robbed.  Interesting looking magnets though!

[i_ron]

Hi All,

here is a new ideal we got and just put together as a new rotor for the generator. It is a 10-3/4" Cast Iron belt pulley available at most quality bearing and pulley shops. We drilled through the spokes and installed screws with nylon lock nut to hold the magnet holders cups. The wheel is true and balanced. It is much heavier than the wheel barrel wheel but is an easy off the shelf precision piece. However, since it is heavier it accelerates slower but seems to give the same affect. We will be testing it more and will give an update.

Stay tuned.

Luc

Luc, thanks for sharing the blow up!  But the pictures are great in that I can see what and how you
are building. As you found out acylic is very brittle. lexan is stronger, along with delrin, but it is not
until you get into the special re enforced plastics that one can feel safer.

However you are not out of the woods yet with the new cast iron wheel. Again cast iron is a very
brittle material. Did they give you a maximum rpm limit? I would think 2000 rpm would be it.

Being a pulley would allow you to wind the vee grove with piano wire or 600 pound test SS fishing
wire, the groove say half filled and the wire ends brought out through a couple of small holes and
down to a clamp screw on the spokes.... could safely double your speed. Either that or a purpose
built steel wheel.....

OK, I'll just go back to counting flowers, lol

Ron

[polarbreeze]

OK, let's focus on what we agree about then. I agree with your statement that the "entire foundation of the observations" is now this brass-vs-steel thing. Let's move forward from there. It's a good place to focus.

WE don't get to move forward from anywhere. 

It was an olive branch but I guess you missed it.

PB