Electric Cri-Cri - ePlane

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floatingdog   100 W

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Electric Cri-Cri - ePlane

Post by floatingdog » Sep 07 2010 10:28pm

Add some folding wings and throw it in the truck. I wonder what Methods, Luke, and Doc could do with this. John in CR, could probably go coast to coast with this baby. AJ, could fly around town at least. Russell, could double the range. :)

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only1jake   10 W

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Re: Electric Cri-Cri - ePlane

Post by only1jake » Sep 08 2010 5:02am

Jake Saunders

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JennyB   1 kW

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Re: Electric Cri-Cri - ePlane

Post by JennyB » Dec 07 2010 4:52am

And now officially the world's fastest electric plane 8)

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Lock   10 GW

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Re: Electric Cri-Cri - ePlane

Post by Lock » Dec 07 2010 6:21am

Cool!

...except "...two 35-horsepower electric motors made by Electravia. "

On the Electravia site the motors they're displaying look a lot like Agnis?

Electravia:
http://www.e-motor.fr/ENGLISH/ZEmotors.html
Image

Agni:
http://agnimotors.com/home/index.php?op ... &Itemid=60
Image

Didn't think the Agnis were capable of 35HP (continuous) though... on the Agni site they say their largest is only to 30HP peak for 5 sec...

I guess the "active cooling" behind the air props could account for pushing more W through the Agni OK... but something here still seems a bit shoddy to me..
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Last edited by Lock on Dec 07 2010 11:07pm, edited 1 time in total.
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Jeremy Harris   10 GW

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Re: Electric Cri-Cri - ePlane

Post by Jeremy Harris » Dec 07 2010 2:47pm

Interesting. A good friend of mine, Nigel Beale, was the first person to fly a microlight on electric power, back in 1996. He used a Lynch motor (essentially the same as the Agni, both are Cedric Lynch designs). Nice to see the same design of motor still flying after all these years..........

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regmeister   1 kW

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Re: Electric Cri-Cri - ePlane

Post by regmeister » Dec 08 2010 1:19am

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Hillhater   100 GW

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Re: Electric Cri-Cri - ePlane

Post by Hillhater » Dec 09 2010 12:10am

interesting ...VERY similar motors on this site ?..
http://www.greenmotorsport.com/article_ ... ubsite=388
The 135 Disc motor has a speed of about 50 rpm for each volt. The maximum continuous current varies from about 80 amps at 12 volts to 160 amps at 60 volts; the limiting factor is the flow of cooling air through the motor and the continuous current at low voltages may be increased if ventilation is good.
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Jeremy Harris   10 GW

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Re: Electric Cri-Cri - ePlane

Post by Jeremy Harris » Dec 09 2010 3:21am

For those not familiar with the trials and tribulations of Cedric Lynch's motors, the IPR issues, problems with investors etc, it's worth mentioning that there are two, or maybe three, companies now making them, I believe, only one of which is still associated directly with Cedric.

The original company was the Lynch Electric Motor Co, LEMCo. I don't know the full story, but there were some difficulties that led to them parting company from Cedric at some point. I believe that LEM (now LMC) are still making the "original" Lynch designs (see here: http://www.lmcltd.net/index.php?page=mo ... nerators-2).

The design of the Lynch motor has been licensed to other companies, notably Briggs and Stratton who used Cedric's topology to build the Etek motor. Since then the design has been copied by others and made in China in significant numbers. Whether or not these copies infringe Cedric's patents isn't clear, but I'd guess that some probably do. I think that the design may have been licensed to other motor manufacturers, too, but I'm not sure.

The current manufacturer of this motor is Agnimotor (see here: http://www.agnimotors.com/home/index.ph ... &Itemid=47), the company that Cedric is now associated with. The Agnimotor seems to have some improvements over the original designs still manufactured by LMC, presumably because Cedric is still actively involved in development.

It looks as if there are now several different companies selling original Lynch designs as their own. These may be LMC motors re-badged, or they may be copies. This business seems rife with IP fraud, so it wouldn't surprise me to find they were just rip-offs.

Jeremy
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