Muller Dynamo

[chrisC]

I am about to get another rotor manufactured. as you know the cost is in the tooling so I pay for one is expensive.
so i can have more than one made. If any body is interested please say as I will just get them to do a few more. you will get them for the cost of what they cost me. and  postage.

this is for a rotor the dimensions are on the drawing

Hi toranarod.

If you're in the U.S, I will be interested in your rotor build. Does it come with the bearings & rod too? Please let us know what the set up costs. Thanks.

chrisC

[SkyWatcher123]

Hi e2matrix ,thanks for the reply.
I tested one from a previous joule thief and it doesn't have enough turns, though it seems to repel or attract my neos fairly well.
Once i get the rotor finished up, I'm gong to pick up some more of these and start winding them, in the meantime i'll try the steel bolt version.
peace love light
tyson

[nul-points]

Several of our guru's have mentioned using Schottky diodes.  I think that's an excellent idea and I can't see how it would effect anything in a bad way (99% sure).  Can anyone recommend a particular number that would work well in this replication?  Most are cheap enough that even using all Schottky's to make FWBR's should not add that much to the cost but what model number might be best here?

the gurus appear to have left the building temporarily 

this is the next highest amperage rating i could find in Farnell at a first pass, above Romero's existing level of current draw:

(SB1240: 12A,  40V rev,  0.45V fwd)
http://uk.farnell.com/semikron/sb1240/diode-schottky-12a-40v-axial/dp/1776353

i would have thought that a 6A (30V rev, 0.45V fwd) rating would be sufficient for a system operating at around 50Watt (motor + load), if you can find some in your usual suppliers

hope this helps
np


http://docsfreelunch.blogspot.com

[sigis]

Hi,
there is some misunderstanding about rotor construction: according information in forum rotor thickness is 12mm, and magnets are 10mm high, But according pictures presented Romero it looks that magnet high is more then 12mm? Can somebody explain that?

[e2matrix]

the gurus appear to have left the building temporarily 

this is the next highest amperage rating i could find in Farnell at a first pass, above Romero's existing level of current draw:

(SB1240: 12A,  40V rev,  0.45V fwd)
http://uk.farnell.com/semikron/sb1240/diode-schottky-12a-40v-axial/dp/1776353

i would have thought that a 6A (30V rev, 0.45V fwd) rating would be sufficient for a system operating at around 50Watt (motor + load), if you can find some in your usual suppliers

hope this helps
np


http://docsfreelunch.blogspot.com

Well actually you are one of the guru's I was hoping might answer so I guess they haven't all left    Thanks so much for the info!