STEORN DEMO LIVE & STREAM in Dublin, December 15th, 10 AM

[k4zep]

Hi Ben,

This is what appears to come out from your data:

Input energy every second:
E = 10V
I = 0.4A
duty cycle = 0.5
Therefore, energy spent every secon is:
W = 0.5 x 10V x 0.4A = 2W or 2J every second

Output energy (only rotational kinetic energy):
Mass of rotor = 0.033kg
Radius of rotor = 0.034m
Rotations per second = 800/60 = 13.3rps
KE = 0.5 x 0.033kg x 0.034m x 0.034m x (2 x 3.14 x 13.3)^2 = 0.13J

Therefore, efficiency = 0.13/2 = 0.065 (heat losses unaccounted for) which is even farther from OU than Aussie's.

There's an almost an order of magnitude discrepancy between yours and Aussies' so maybe some of the data aren't correct. Could you please double check just to make sure. Thanks.

Darned if I know, I sure have good bearings!  Perhaps if you subtracted the heat loss which in my case is really almost 100% of the energy used!,  you would see what the motor is actually doing, but not the system.  The we can zero in on preventing resistive heat loss later! 

Respectfully,

Ben

[callanan]

Sorry Ossie, but yours appears to be undeunity (if the unaccounted for heat losses don't turna that around). So, let's review what you have:

Input energy every second:
E = 2.2V
I = 0.3A
duty cycle = 0.48
Therefore, energy spent every secon is:
W = 0.48 x 2.2V x 0.3A = 0.32W or 0.32J every second

Output energy (only rotational kinetic energy):
Mass of rotor = 0.35kg
Radius of rotor = 0.05m
Rotations per second = 180/60 = 3rps
KE = 0.5 x 0.35kg x 0.05m x 0.05m x (2 x 3.14 x 3)^2 = 0.16J

Therefore, efficiency = 0.16/0.32 = 0.5 (heat losses unaccounted for) which is far from OU.

Hi OB,

Don't be sorry. Thanks for the effort. Much more things to explore. Steorn is supposedly going to report on heat in the motor in January so we shall see just how much heat versus mechanical energy equals input for them. For my motor, I don't know. But it will be a factor. Anyway, I did a video of the running motor. Here it is.

http://www.youtube.com/watch?v=G-gXQagKSNc

Regards,

Ossie

[PaulLowrance]

Wow, I can't believe my eyes,

http://www.overunity.com/index.php?topic=8528.msg217758#msg217758

Please discuss any temperature related stuff in that thread, otherwise I'll probably miss your post.

Thanks,
Paul

[futuristic]

Hey guys. Today I have attempted to do Orbo replication, but sadly I didn't do enugh wire turns on toroids core, so they don't saturate. Will try to make new toroids soon.

Crapy quality video made with cellphone:
http://www.youtube.com/watch?v=7qvaQxtpQrM

Photo:

[PaulLowrance]

The link in my previous post suddenly broke, lol, oddly enough. Here it is again,

http://www.overunity.com/index.php?topic=8528.msg217758#msg217758