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coulomb
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Post by coulomb » Sun, 24 May 2009, 21:31

Taffy wrote: There is a thread about importing Chinese motors at DIYelectriccar forums/motors area, they got them into the US for about US$1300 including postage.

This is about the closest I can find:
The originator of this thread has some great info there, thanks! And he said he'd probably go and buy one, but doesn't seem to have. US$1300 seems way too high to me. Did something go wrong? Any other clues to find this post, please?
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Post by Taffy » Mon, 25 May 2009, 02:10

Hey Coulomb, this is the thread: http://www.diyelectriccar.com/forums/sh ... 29214.html


This page has pics of the motor they purchased:
http://www.diyelectriccar.com/forums/sh ... 214p5.html

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Post by coulomb » Mon, 25 May 2009, 06:11

Ah, brushless DC. I was thinking brushed, series DC.

It so happens that brushless are another option that I am considering. Though I think I'd like to hold out for the hybrid (as in part synchronous (=brushless) PM, part (un?)switched reluctance) motors, as used in the EVme. When they make them affordably, of course. Maybe that has to wait for a future conversion.
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Post by Nakey » Wed, 27 May 2009, 02:42

hi all,

as some of you know i do talks at the sydney AEVA branch meetings. i'm doing a talk on motors next tuesday and i'm bringing a special guest along with me.
i'm bring the very motor they used in topgear to show (yes the kostov). i'l also bringing a 7 inch ADC, i should have a 9inch ADC and i'll bring a small AC motor.

if anyone has a motor bring it along to add to the colection.

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Post by evric » Wed, 27 May 2009, 02:50

Was the Topgear motor wired in such a way in the Holden for it to be run in reverse gear?
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Post by Nakey » Wed, 27 May 2009, 02:57

Hi Eric,

yep i explained it all on the 3rd page of this thread.

BTW anyone who wants a kostov, I’ll be completing the updates to my site shortly including all pricing on ADC, the kostov range of motors, curtis controllers and many other wonderful and shiny bits and pieces.

Last edited by Nakey on Tue, 26 May 2009, 17:00, edited 1 time in total.

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Post by Taffy » Wed, 27 May 2009, 14:13

Strange question, but what is your site? (i have a feeling i am about look like a fool, so will blame it on little sleep and an early start).

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Post by woody » Wed, 27 May 2009, 14:23

Nakey fails in self-promotion :-(
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Post by Taffy » Wed, 27 May 2009, 16:17

Thanks woody.

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Post by Nakey » Wed, 27 May 2009, 16:34

point taken, i'll turn the self promo up a notch.

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Post by coulomb » Wed, 27 May 2009, 18:41

Taffy wrote: Strange question, but what is your site? (i have a feeling i am about look like a fool, so will blame it on little sleep and an early start).

With these shy types, you can often use the dropdown on the author name (edit: above the atavar/icon), and use "Visit member's homepage". It might not always be there (that's really shy), or might not go where you want, but that's how I looked at Nakey's home page.

That echo battery box is puuurdy Image   (as in pretty, beautiful)

I wonder what it's like to work and weld with stainless steel. AI imagine that every hole you have to drill is a pain.
Last edited by coulomb on Wed, 27 May 2009, 08:42, edited 1 time in total.
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Patching PIP-4048/5048 inverter-chargers.

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Post by Electrocycle » Wed, 27 May 2009, 19:07

stainless steel is really nice to weld.
Drilling is a bit of a pain if you don't have a good quality drill bit (and do it carefully)
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Post by acmotor » Wed, 27 May 2009, 19:47

Slow drill speed, use cutting paste, maintain drill feed.
Agreed, stainless steel is easy to TIG weld. Image
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Post by Nakey » Wed, 27 May 2009, 21:19

You have to use cobalt drill bits (which still dull very fast with stainless).

The welding part is fun however stainless warps like the enterprise after Patrick Stewart says, "engage".

You have to tack it every 25 to 30mm or about every inch. When welding you have to start at one end, weld about 100mm or so stop and start at the other end to help avoid distortion. But if you have a tig capable of pulse that makes it fun. Perfect welds, minimal heat, and in some cases no wire.

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Post by tassie_tiger » Wed, 27 May 2009, 23:48

Nakey, your siggy needs correcting.
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Post by coulomb » Wed, 27 May 2009, 23:54

Just put the http:// in front of the www. It's a common error. A pity that the forum software doesn't just "do the obvious thing".
Last edited by coulomb on Wed, 27 May 2009, 13:54, edited 1 time in total.
Nissan Leaf 2012 with new battery May 2019.
5650 W solar, 2xPIP-4048MS inverters, 16 kWh battery.
1.4 kW solar with 1.2 kW Latronics inverter and FIT.
160 W solar, 2.5 kWh 24 V battery for lights.
Patching PIP-4048/5048 inverter-chargers.

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