Muller Dynamo

[DadHav]

Someones have sense of humor, someones not 
cheers,
khabe

Excuse me Mr. Khabe. Are you by any chance the Herbert who I may of had conversations with on the LRK TorqueMax forum?
John H

[i_ron]

i_ron, that's an impressive build.  Have you given it a run yet?  I'm sure you are aware of this but I've got to ask as it looks like you are on an aluminum or steel base plate and from the size of your magnets I'm wondering if there isn't some drag from Lenz effect happening?

e2,

The aluminum base plate is 60mm clear of the rotor magnets but is a factor that will be considered when I get to fine tuning.

JB uses aluminum for the rotor itself, so how much this effects things is hard to say

Ron

[Magluvin]

I would need some ideas how to fix a bearing to the center of a Plexiglas disk:

Sometimes I see in nice builds (e.g. in Lasersaber's latest Muller Generator replication) that a bearing has been fitted to the middle of a disk.

I always have problems when I try this.

So, master builders, how does one fit a bearing to the center of a disk?

When I do it, the bearing always slips off eventually. In case a glue is used, which one?

Greetings, Conrad

If your center hole is accurate to press fit, this would be best. But if snug but can wiggle loose, I suggest a bearing as I have stated above, has a flange lip, this should keep it level and you can get a plastic washer (home depot hardware) and use small screws to hold the bearing in place.  I have used tiny screws on the edge of the flange, but it is tedious to get a mint setting due to the small screw holes can possibly break into the bearing hole as they would be very close. This can cause a bit of off level issues.

Glue would be last to try as the bearing replacement, for what ever reason wont be so easy.

Mags

[neptune]

@ conradelectro . Another idea is to make a large plexiglass "washer" , The hole in the middle to be a bit smaller than the bearing . You could use two , top and  bottom , then drill through the washers and the disc and fit 3 or 4 bolts .

[conradelektro]

@Magluvin, neptune: Thank you, that helps.

@all: may be there are more ideas out there?

Greetings, Conrade