Farfles Electric Ultralight.

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Farfle   1 MW

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Farfles Electric Ultralight.

Post by Farfle » Jun 21 2017 11:48pm

Heya all!! Started this project around the beginning of the year, and have made enough progress to post it up on the forum.

Heres some stats:

Airframe: Belite Ultracub
Motor: salvage Zero 75-5 IPM
Battery: Farasis 29AH 28S4P pack
Controller salvage sevcon Gen4 Size 4
Bms: None
Charger: Meanwell RSP2000 x2

This guy will be called Mk.5!


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Last edited by Farfle on Jun 22 2017 1:08am, edited 1 time in total.
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Farfle   1 MW

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Re: Farfles Electric Ultralight.

Post by Farfle » Jun 22 2017 12:21am

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Farfle   1 MW

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Re: Farfles Electric Ultralight.

Post by Farfle » Jun 22 2017 12:23am

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Farfle   1 MW

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Re: Farfles Electric Ultralight.

Post by Farfle » Jun 22 2017 12:26am

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Farfle   1 MW

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Re: Farfles Electric Ultralight.

Post by Farfle » Jun 22 2017 12:29am

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liveforphysics   100 GW

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Re: Farfles Electric Ultralight.

Post by liveforphysics » Jun 22 2017 12:32am

So excited to fly in it!!!
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Farfle   1 MW

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Re: Farfles Electric Ultralight.

Post by Farfle » Jun 22 2017 1:05am

liveforphysics wrote:So excited to fly in it!!!
Should be a good performer!

More pics to come.
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Farfle   1 MW

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Re: Farfles Electric Ultralight.

Post by Farfle » Jun 22 2017 11:22am

Pics of the belt reduction:

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mauimart   100 W

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Re: Farfles Electric Ultralight.

Post by mauimart » Jun 22 2017 2:10pm

Great project--can't wait to see it flying. What's the kV of that motor and what is the gear reduction? What size prop are you planning on spinning?

I am going to be embarking on a similar project with high school students. Starting in September we will be fabricating the EMG-6 (https://electricmotorglider.com/) with electric drive. Have not decided on the motor/prop as of yet but would like to do direct drive (no reduction). Here is another UL that used the Zero motor (https://www.youtube.com/watch?v=-eYIfGGk2yg&t=204s).

Best of luck to you.

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Farfle   1 MW

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Re: Farfles Electric Ultralight.

Post by Farfle » Jun 22 2017 2:52pm

mauimart wrote:Great project--can't wait to see it flying. What's the kV of that motor and what is the gear reduction? What size prop are you planning on spinning?

I am going to be embarking on a similar project with high school students. Starting in September we will be fabricating the EMG-6 (https://electricmotorglider.com/) with electric drive. Have not decided on the motor/prop as of yet but would like to do direct drive (no reduction). Here is another UL that used the Zero motor (https://www.youtube.com/watch?v=-eYIfGGk2yg&t=204s).

Best of luck to you.
I forget the motors Kv, But max speed is 6000 RPM and max power somewhere around 3300 RPM.

I plan on spinning a 62-66" two blade Powerfin "B" blade around 2850-3100 RPM. Current gear ratio is 30/65
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fechter   100 GW

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Re: Farfles Electric Ultralight.

Post by fechter » Jun 22 2017 3:01pm

Do you need a FAA license to fly one of those?
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Farfle   1 MW

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Re: Farfles Electric Ultralight.

Post by Farfle » Jun 22 2017 3:09pm

fechter wrote:Do you need a FAA license to fly one of those?
Nope! This is a FAA part 103 ultralight.
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Re: Farfles Electric Ultralight.

Post by liveforphysics » Jun 22 2017 3:52pm

A gen4. 5 will be a nice performance upgrade path for even shorter takeoffs assuming the airframe is up to it.

That bird with a couple linear actuators on the stick would make a fine 1:1 RC model.
Each carcinogen vapor exposure includes a dice roll for cancer.

Each mutagen vapor exposure includes a dice roll for reproductive genetic defects in your children.

Each engine start sprays them into a shared atmosphere which includes beings not offered an opportunity to consent accepting these cancer experiences and defective genetics life experiences.

Every post is a free gift to the collective of minds composing the living bleeding edge of LEV development on our spaceship.

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Re: Farfles Electric Ultralight.

Post by SlowCo » Jun 22 2017 3:58pm

Wow, what an amazing project! I wish you well while building and a safe flight when it's done.

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Re: Farfles Electric Ultralight.

Post by mauimart » Jun 22 2017 7:33pm

Can you clarify the battery pack? Is it 29Ah total or 4 x 29Ah? The latter would make a 12kWh pack. And what is the anticipated weight of battery?

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Farfle   1 MW

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Re: Farfles Electric Ultralight.

Post by Farfle » Jun 22 2017 7:38pm

mauimart wrote:Can you clarify the battery pack? Is it 29Ah total or 4 x 29Ah? The latter would make a 12kWh pack. And what is the anticipated weight of battery?
The pack is 29Ah per cell with 4 in paralell for a roughly 12kwhr pack. Pack weight will be right at 67KGs
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Re: Farfles Electric Ultralight.

Post by fechter » Jun 22 2017 9:12pm

liveforphysics wrote: That bird with a couple linear actuators on the stick would make a fine 1:1 RC model.
I was thinking the same thing. It could carry a nice payload.
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Re: Farfles Electric Ultralight.

Post by marty » Jun 22 2017 10:00pm

This reminds me of my radio controlled model airplanes. Was really into those before I was old enough to have a car, 12 to 15 years old? I am 56 now. Was better at building then flying. Crashed every plane. I still have the planes in my attic. Balsa wood, plastic covering that ya heat and shrink with a little iron, gas engines, servos, music wire. I liked flying the glider the best. Long rubber tubing to launch it.

Remember one plane. No throttle control? Had a experienced pilot fly it for me. Plane had a problem and kept flying higher and higher. Eventually the experienced pilot was able to get the plane to come down and land.
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Re: Farfles Electric Ultralight.

Post by litespeed » Jun 23 2017 6:27am

That is really cool.

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Re: Farfles Electric Ultralight.

Post by spinningmagnets » Jun 23 2017 7:06am

This is an awesome project, I look forward to the results.
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I am reminded of the 1937 Fi-156 Fieseler Storch (Stork)

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Re: Farfles Electric Ultralight.

Post by rojitor » Jun 23 2017 12:49pm

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Farfle   1 MW

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Re: Farfles Electric Ultralight.

Post by Farfle » Jun 24 2017 10:22am

spinningmagnets wrote:This is an awesome project, I look forward to the results.


I am reminded of the 1937 Fi-156 Fieseler Storch (Stork)

[img]http://www.toni-clark.com/english/model ... M-PL_3.jpg
That Storch is a special kind of ugly, but a fairly good performer!
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Re: Farfles Electric Ultralight.

Post by Matador » Jun 24 2017 10:35am

Wow ! OMG Wow ! I want one....

Brings back memories.... Me on coming back from my first solo :
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And no more carb heat !
Hopefully it can take just enough G's for roman candles and lazy eights !


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Re: Farfles Electric Ultralight.

Post by helno » Jun 24 2017 11:00am

How is your weight budget looking? Far 103 is pretty strict with that 254 lb limit.

Looks like it will have tons of power. Belite makes neat little planes.

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Re: Farfles Electric Ultralight.

Post by neptronix » Jun 24 2017 11:58am

Wow.. I've pimped this thread in the endless sphere facebook group because it is so damn rad.

Can't wait to see how it turns out; best wishes!
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