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Old Nov 21, 2012, 11:18 PM
BabyBootLegger
sunworksco's Avatar
United States, CA, Alameda
Joined Nov 2010
650 Posts
Looks like an Astroflight motor. I'm planning to use one on a submarine piston ballast tank. Great motor.
Giovanni
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Old Dec 03, 2012, 10:40 AM
Dale
KiloOne's Avatar
Joined Jul 2004
303 Posts
Quote:
Originally Posted by Mike Freas View Post
Did you sell all the PL8's?
I have one gang of 3 PL8's left with their power supplies (see pic in this thread)

Anyone interested, make an offer.

Dale
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Old Dec 03, 2012, 10:47 AM
Dale
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Joined Jul 2004
303 Posts
Quote:
Originally Posted by Ron van Sommeren View Post
Kontronik Kosmik controllers
  • 5-14 Lipo, 20-59 V
  • 200 A continuous current
  • BEC 7 A cont. current
  • 200 g without cable
Programmable reverse, very handy for taxiing

More info
www.kontronik.com

I like this, especially the bolted connectors (and reverse!).

Wish I still had the resources to try four.

Thanks,
Dale
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Old Dec 03, 2012, 10:57 AM
Dale
KiloOne's Avatar
Joined Jul 2004
303 Posts
December 2012 Udate

Not much going on now, in fact I have not been able to do anything since Oshkosh.

I have had to concentrate on other business ventures that actually bring in money.

Since I am still the only one working on this and no investors have surfaced, it looks like things will still progress slowly.

If I was to go back working on this full time again I estimate another 6 months till I have the electronics where I would be happy with them.

The biggest problem I need to solve is to have a reliable mosfet power switch that I can control with a 5v signal and which switches up to 300 amps at 50v. I am lacking experience on this and I welcome input from anyone with a solid solution for this.

I hope to take the Oshkosh plane down to Texas this winter yet for further flight testing.

Dale
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Old Dec 03, 2012, 05:20 PM
Zach
Illinois
Joined Feb 2004
806 Posts
Quote:
Originally Posted by KiloOne View Post
I have one gang of 3 PL8's left with their power supplies (see pic in this thread)

Anyone interested, make an offer.

Dale
If the mosfets are part of your BMS you may check with a solar racing team. Some of them such as the University of Michigan build their own BMS and may be able to help. We are all in the same boat when it comes to the BMS.

I've been looking into the PL-8 for use in charging the batteries in our solar powered car. Unfortunately we can't afford to buy one.
The current plan for charging our lipos is to connect them directly to a variable power supply. My gut feeling is that this is going to end badly.

Zach
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Old Dec 08, 2012, 02:43 AM
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Joined Dec 2011
10 Posts
You may struggle to find a big enough single MOSFET to meet your needs. However for an on/off switch application there's no problem paralleling (they share current nicely when paralleled & there are no 2nd breakdown or early effect worries). If you used say 10 parallel IRFP4568PBF from IR, that's 0.6mohm RDSon. 300A through that lot is just over 5W each dissipation & would take up about 2 square inches of board space.
Dealing with 300A in a PCB trace is another problem, but not insurmountable I don't think; I've seen professional equipment with >100A in a 1inch wide PCB trace, that would be on 4oz. copper; & you have 2 or maybe 4 layers to play with.
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Old Dec 23, 2012, 06:49 PM
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Joined Nov 2006
2 Posts
There is a electronic device called "opto-isolators" to drive huge electric power from microcontrollers.

Have a look at his site:
http://jondontdoit.blogspot.ca/2012/...h-your-tv.html

Or this site:
hackaday.com
and search for "opto-isolator"

I think that would be an answer to the question !

Isao
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Old Jan 02, 2013, 09:25 PM
Electric Aircraft Enthusiast
Joined Aug 2011
1 Posts
Dale, I'm a bit unclear as to whether you're looking for a good motor controller or just something to act as a big electronic safety switch or the like.

In any case, I think you'll find a wealth of relevant information and DIY expertise on the Motor Technology forum of Endless Sphere. You have even attracted some attention on those forums, viz.: http://endless-sphere.com/forums/sea...ds=dale+kramer
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Old Feb 02, 2013, 08:12 AM
homo ludens modellisticus
Ron van Sommeren's Avatar
near Nijmegen, Netherlands
Joined Feb 2001
10,165 Posts
Quote:
Originally Posted by Ron van Sommeren View Post
Kontronik Kosmik controllers
  • 5-14 Lipo, 20-59 V
  • 200 A continuous current
  • BEC 7 A cont. current
  • 200 g without cable
Programmable reverse, very handy for taxiing
Testreport by Gerd Giese (a.k.a. www.elektromodellflug.de):
Translated version:
translate...www.rc-network.de/forum/content.php/233-Die-Brushless-Antriebe-von-Kontronik-erstürmen-die-Oberklasse

Vriendelijke groeten Ron



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Old Feb 02, 2013, 10:04 AM
HyperFlight Support
Neil Stainton's Avatar
United Kingdom, England, Stratford-upon-Avon
Joined Feb 2001
3,839 Posts
Thanks Ron. That looks much better and safer than using a CC controller.

Neil.
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Old Feb 16, 2013, 08:53 AM
Registered User
South Africa
Joined Feb 2010
959 Posts
Quote:
Originally Posted by KiloOne View Post
December 2012 Udate

Not much going on now, in fact I have not been able to do anything since Oshkosh.

I have had to concentrate on other business ventures that actually bring in money.

Since I am still the only one working on this and no investors have surfaced, it looks like things will still progress slowly.

If I was to go back working on this full time again I estimate another 6 months till I have the electronics where I would be happy with them.

The biggest problem I need to solve is to have a reliable mosfet power switch that I can control with a 5v signal and which switches up to 300 amps at 50v. I am lacking experience on this and I welcome input from anyone with a solid solution for this.

I hope to take the Oshkosh plane down to Texas this winter yet for further flight testing.

Dale
Dale, you should try kickstarter.com

You have a wealth of R&D to convince them on how successful this will be, i have heard many successful stories and of course naturally this is an exciting an interesting endeavor no matter who you are !
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Old May 29, 2013, 05:10 AM
homo ludens modellisticus
Ron van Sommeren's Avatar
near Nijmegen, Netherlands
Joined Feb 2001
10,165 Posts
Quote:
Originally Posted by Ron van Sommeren View Post
Slightly OT
Video and more pictures of manned flight with an electric multicopter
www.e-volo.com ...
Quote:
Originally Posted by e_lm_70 View Post
I think they will make more money with YouTube revenue sharing, then not trying to sell the concept ... As said, it is dangerous, and highly inefficient way to fly. They have been the first on doing it ... but ... everybody could have done it, with enough money to "waste" ... it is nothing else then a RC multi copter, but bigger ... nothing special. ...
Version 2 in the works, the VC200
www.e-volo.com

Controllers
translate...www.sinusleistungssteller.de

VC200

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Last edited by Ron van Sommeren; May 29, 2013 at 05:21 AM.
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Old Jun 13, 2013, 07:06 AM
homo ludens modellisticus
Ron van Sommeren's Avatar
near Nijmegen, Netherlands
Joined Feb 2001
10,165 Posts
Plettenberg Nova series: 15, 30 and 150kW
www.plettenberg-motoren.net/index.php/en/motor-serias-nova

Vriendelijke groeten Ron
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Old Jun 13, 2013, 07:16 AM
homo ludens modellisticus
Ron van Sommeren's Avatar
near Nijmegen, Netherlands
Joined Feb 2001
10,165 Posts
Controllers
www.plettenberg-motoren.net/index.php/en/motor-control
MST 140-400: 30/40kW
MST 400-400: 120/160kW

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Last edited by Ron van Sommeren; Jun 13, 2013 at 07:22 AM.
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Old Jun 13, 2013, 07:31 AM
homo ludens modellisticus
Ron van Sommeren's Avatar
near Nijmegen, Netherlands
Joined Feb 2001
10,165 Posts
www.makanipower.com ( also www.jobymotors.com & www.jobyaviation.com ???) aquired by Google.
See
www.makanipower.com/google

Vriendelijke groeten Ron
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Last edited by Ron van Sommeren; Jun 13, 2013 at 08:14 AM.
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