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Old 24th March 2013, 03:02 PM   #11
solhaga is offline solhaga  Sweden
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Glueing:

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Sunday afternoon work out:

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When this has hardened, I´ll do the other pair (I have to re-use the iron spacers).

Last edited by solhaga; 24th March 2013 at 03:05 PM.
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Old 24th March 2013, 03:50 PM   #12
solhaga is offline solhaga  Sweden
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Quote:
Originally Posted by solhaga View Post
No, this is the front (or back, it depends what will parts that will look the best).
Sorry, I got your question wrong

I thought about that, having 40 mm iron in-between the 200 mm rods that is, but I don´t think strenghtens the field of the gap anyway.
The rationale for this is that I observed that I couldn´t get two rod close together on the magnet without using force. They actually befare soft magnets themselves and repelled each other.

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Old 26th March 2013, 06:00 AM   #13
solhaga is offline solhaga  Sweden
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Default Design thought One

Just finished the second pair and I´ll probably assemble the motors tonight.
Attaching the magnets to the "cattle guard/grid" will probably be a tough job.

So I was thinking: Does the front part grid and the back part grid really need to be aligned? Having them offset by 3 mm would result in a so to speak non-see through motor.

Last edited by solhaga; 26th March 2013 at 06:28 AM.
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Old 26th March 2013, 06:09 AM   #14
solhaga is offline solhaga  Sweden
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Default Design thought Two

Should the pleats be normal to the grid as usual or in parallell?
If parallell, the front and the back off grid will really be a benefit.
The pleats will have of to match the slots both on the front and on the back grid.

Last edited by solhaga; 26th March 2013 at 06:25 AM.
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Old 26th March 2013, 06:14 AM   #15
solhaga is offline solhaga  Sweden
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Default Design thought Three

So for the final thought for the day (no, it is not a promise).
I was thinking of the orientation of the whole motor, grid horisontal or vertical?
Of course must the thoughts above have to be taken into consideration.
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Old 26th March 2013, 07:18 AM   #16
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Good morning Solhaga.
DONT!! place all the magnets on one grid and try to place the other on top.
Place a 10mm. thick wood at the one side and push some magnets sideways in at the other.
Move the wood a bit and push or tap some in.
Try to align them.
Good Luck

Bernt
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Old 26th March 2013, 07:30 AM   #17
solhaga is offline solhaga  Sweden
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Quote:
Originally Posted by båndsei View Post
Good morning Solhaga.
DONT!! place all the magnets on one grid and try to place the other on top.
Place a 10mm. thick wood at the one side and push some magnets sideways in at the other.
Move the wood a bit and push or tap some in.
Try to align them.
Good Luck

Bernt
Good morning to you as well.

I been thinking in that direction. Another way would be to place all the magnets on one grid and have a much thicker stack than 10 mm in the middle and then removing "cards" in the stack and thereby lowering the other grid towards the other.

Do you think glueing of the magnets is necessary or does one do that afterwards if needed?
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Old 26th March 2013, 08:39 AM   #18
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I dont think you can drag the "cards out as the stack gets thin
No need for gluing i think,but the magnets are repelling each other.You might have to fasten first and last in the row.

Bernt
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Old 26th March 2013, 09:01 AM   #19
solhaga is offline solhaga  Sweden
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Quote:
Originally Posted by båndsei View Post
I dont think you can drag the "cards out as the stack gets thin
No need for gluing i think,but the magnets are repelling each other.You might have to fasten first and last in the row.

Bernt
Thanks for the advice. I´ll go for your suggestion. Great idea to fasten the first and last magnet in the row.
Perhaps the first one can be glued and the last one fasten with a clamp so there´s room for adjustments.

I plan to glue a 30 mm x 160 mm aluminum plate on the outside of the magnets just as the front and back plates.
Also inside I plan to glue a 1 mm thick 10 mm x 160 mm aluminium strip to get an even surface for the membrane.
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Old 26th March 2013, 10:51 AM   #20
solhaga is offline solhaga  Sweden
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Any thoughts on "Design thought One" above?
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