Author Topic: james cell  (Read 10696 times)

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hydro

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Re: james cell
« Reply #16 on: March 07, 2008, 11:10:41 am »
Anybody have any ideas  what kind of dc motor you could power the alt with?  How many amps would the dc motor  pull?

Tim

atleast 13 amps on freespin, its not the way to go.

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Re: james cell
« Reply #17 on: April 11, 2008, 20:03:35 pm »
Cool!  Man, I'm so close, I cant wait!   Have you conditioned your tubes yet?

Everybody must do what they do.
I didnt conditioned any of my tubes. As far as I can see, its a waist of time.
And my production is very good.

br
Steve

I now agree steve

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Re: james cell
« Reply #18 on: April 11, 2008, 23:31:49 pm »
I didn't condition my tubes either, And they seem to work fine.

Spike

mrgalleria

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Re: james cell
« Reply #19 on: April 18, 2008, 08:06:56 am »
Aloha,
For your info, in case you don't already know- Cell Design is of primary importance.
Many are concerned with surface area but this is not of primary importance.
Many think that amps are important. Surface area and amps are relative.
Cell design is first. Too much surface area (or too little) can actually diminish production.
Same with amps, amps are not directly related to production.
For an example, you may wany to look at my project pages posted at oupower.com,
mrgalleria, Mr. G cell.
Flat plates have the disadvantage of electronically working against each other,
thus not providing a smooth flow of current.
Tubes have the disadvantage of having unequal surface areas.
Bill
« Last Edit: April 18, 2008, 08:10:40 am by mrgalleria »

JTJB

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Re: james cell
« Reply #20 on: May 05, 2008, 05:36:01 am »
James, I'm a new builder and was curious where you obtained your teflon bumpers from? Do you have a part number or the manufacturers name that made them?

Your tubes electrical lugs/legs are a very clever 2 in 1 solution. How did you go about cutting them? Did you hand cut them with a metal bandsaw or mill them on the milling machine? I also assume you drilled the bolt holes while the tubes where still intact?

I also assume the curve on the legs would have to be flattened out before you made your 90 degree bend. How did you flatten that section? A Vise?

jbhuffinstuff

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Re: james cell
« Reply #21 on: May 05, 2008, 06:03:22 am »
sorry to say their is no part number for the teflon bumpers i made them all from scratch

the only thing i found close are furniture plugs from home depot but you would need a smaller gap than i have  around 1mm or less

as for the legs i rought cut them out with a bandsaw to remove the bulk  then cleaned them up with a milling machine

i did flatten them out buy using two pieces of 1 x 1 tool steel and squeezed it in a vise

then i took one piece of tool steel and ground a raidus on it  clamped the tube the approprate way and bent it over

the radius is extremly important other wise the  ss material will crack or tear in the corner with out the relief   i would try a test piece

you have to  drill the holes last otherwise it will break of when you bend the foot over

happy building





JTJB

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Re: james cell
« Reply #22 on: May 05, 2008, 07:53:25 am »
Thanks for your quick response. Forgive me but I need to press you further. What did you fashion the bumpers from?

It looks like teflon / nylon drill rod? If so, did you spin the rod on the lathe, take half of the bumpers diameter down from say 1/4 to a hair over 1/8, then part them off into nice little " T " shaped pellets?

I assume you would make the bumpers a hair oversize of what you drilled the SS tubes so as to obtain a nice one time press fit? No loctite prism glue or anything like that holding the bumpers in place which could possibly contaminate the water right?

JTJB

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Re: james cell
« Reply #23 on: May 05, 2008, 08:18:13 am »
Think I found a bumper solution....

I own an industrial supply shop in Manitoba Canada. I purchase from this company and think part number 305-002 (H dimension is 1.52mm) should suffice as my gap is exactly 1.52 mm by using .625OD x .065 wall x .495 ID (stainless inner tube) and .875 x .065 x .745 (stainless outer tube)

The other dimensions are nice too. 1/8 hole, grip range is good as well...woohoo!!


Here's the link... http://www.spaenaur.com/view_pdf.asp?Page=E46