Muller Dynamo

[duff]

Hi All,

Each step in developing this motor/gen is laborious and time consuming and there are no short cuts.  Every time I take a short cut,
I end up throwing away some coils.  I actually need to start over again as mechanical rigidity is of paramount importance in the
rotor and coil assemblies!  Half the problem is figuring out how demonstrate what you are assuming is happening and then finding out
you are wrong.  I laughed the first time I read Romero said he had made thousands of adjustments, I am not laughing any more.

http://www.youtube.com/watch?v=zrj4Lq9I_6c

This race is not for the rabbits!!!!!

Ben K4ZEP

Ben,

Would you draw up a schematic of the setup?

I'm not 100% sure I follow the video description.

Thanks

[e2matrix]

Hi All,

Each step in developing this motor/gen is laborious and time consuming and there are no short cuts.  Every time I take a short cut,
I end up throwing away some coils.  I actually need to start over again as mechanical rigidity is of paramount importance in the
rotor and coil assemblies!  Half the problem is figuring out how demonstrate what you are assuming is happening and then finding out
you are wrong.  I laughed the first time I read Romero said he had made thousands of adjustments, I am not laughing any more.

http://www.youtube.com/watch?v=zrj4Lq9I_6c

This race is not for the rabbits!!!!!

Ben K4ZEP

Nice work Ben.  I think this project takes the turtle mindset   I know I am far behind others here but it doesn't bother me as I more than anything just want it to be a fun project regardless of the outcome.  I look at it as something to have fun tinkering with and if I get lucky that's fine if not that's okay too. 

[Artist_Guy]

WRONG.  People have a life, it's summer, and a lot of people are still rounding up parts or trying many options in tuning between their jobs and other responsibilities.  There's an ebb and flow to activity with this.  Come back in a few weeks or so when it's over 300 pages.

I am collecting parts here still, too. Can't afford the plexiglass, so will have to go with MDF, though I can cobble up a 4 layer laminate for the rotor out of plexiglass that I do have and cut that out on the table saw. I just am not sure what is the best glue for laminating that...it can't fly apart obviously.

Have ferrite cores which I still have to cut to length (7mm diameter not 6mm though, will scale length up a bit accordingly from the original 15mm to 17.5 I guess), Litz, 47000 uf BHC, various Neos, gobs of rectifiers and diodes. Instead of bobbins I got some nylon washers, and will use those on the cores as delimiters, since the bobbins get too thin when bored for the 7mm's and it is just too labor intensive to ream them out with scissors or real reamer. Have some hall switches from micro switches, but also have the A3144's on the way.

I have a winding counter which should get me spot on with the coil turns.

Wondering...what would be the electrical and also Lenz results of using a coil like the attached?

AG

[k4zep]

Duff, E2, will draw up a schematic later tonight, wife wants me to spend some time with her, be back later.
A couple more things.  IF you load down the generator coil and do not use it as a boost, there is about a 25% loss of RPM vs. in boost configuration.

Also, in boost mode, below a certain voltage/speed, it just acts like a linz law device with a load on the rotor, there is a crossover point, then above a certain voltage/RPM to the rotor, it starts kicking in and peaks at a certain speed/load.  Actually pretty straightforward if I am reading everything right.

Ben K4ZEP

[redrichie]

Artist-guy,
Plexi Im not sure of.  But with acrylic they make a product for welding it.  ITs called weld-on.  used for acrylic aquariums.  It doesnt just glue together.  It literally melts the pieces together through a chemical reaction.  I ve tried silicon, super glue, and a couple epoxies that all failed at one point or another.  Weld-on all the way.  Google it and you can see how to use it.  fairly simple. and a can would last you forever.