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  #1  
Old 12-13-2020, 11:54 AM
c5company@aol.com c5company@aol.com is offline
 
Join Date: Jun 2018
Location: Camarillo,ca
Posts: 1
Default Tesla Electric powered RV

I know there many very talented people on this forum. Someone must have thought of putting a Tesla motor, inverter, controller, and batteries in an RV.
Just the motor, for example weights only 70 lbs and puts out 362 hp. Although itís seems some of the numbers differ on the internet, they all are in the same ballpark. If Bye aircraft with their Eflyer 2 can fly for 3 1/2 hours , the Tesla setup
In an RV might be interesting?
Maybe someone has already suggested this, hope this isnít a repeat.
Thanks
Chuck
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  #2  
Old 12-13-2020, 12:01 PM
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bkervaski bkervaski is offline
 
Join Date: Mar 2017
Location: Birmingham, Alabama
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Default

I've been thinking a lot about it. Biggest problem I see is a reliable reduction drive or finding a motor that will run efficiently enough at 2500rpm.

My math says about 3 1/2 total flight time using 81670 batteries the same amount of batteries in weight as the RV-14 currently has in fuel so really only about 3 hours safely.

The new packs in the Model 3 and Y are 2170's would probably add another 30 minutes, haven't done the math.

Then the problem is charging .. since there are no level 2 or 3 chargers at airports .. having to charge at least overnight with an AC adapter for every 3 hours of flying .. which basically kills the idea for anything other than novelty.

But the novelty would be cool
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Last edited by bkervaski : 12-13-2020 at 12:05 PM.
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  #3  
Old 12-13-2020, 12:15 PM
David Z David Z is offline
 
Join Date: Aug 2010
Location: Thunder Bay Ontario
Posts: 974
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The Tesla motor makes 362hp, but at what RPM? 362hp is way too much for all of the RV models. How much power does it make in the 2200-2700rpm range?

Another question is continuous output and cooling. Can the engine handle that high load and electrical current for long duration? A Tesla, while great when accelerating that power isn't used very often. A car operated in a legal fashion can't use much more than about 50hp continuously. An RV10 would need about 220hp continuous when climbing and 200hp is around 75% of 260hp for cruise.
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  #4  
Old 12-13-2020, 12:23 PM
cgroves cgroves is offline
 
Join Date: Aug 2017
Location: Ontario, Canada
Posts: 28
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362 off an IC engine is too much, it depends on what is the limiting factor. The electric motor will make much smoother power without the impulse vibration that a gas engine would create. On the flip side since they come up to 100% torque almost instantly you would probably need to limit the spinup torque in software.

I can't wait, lots of issues around noise and land use go away with electric aircraft. The drive systems have far fewer moving parts and make turbines look horribly unreliable.

And best of all, power is constant so you get some outrageous cruise speeds at high altitude.

Last edited by cgroves : 12-13-2020 at 12:28 PM.
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  #5  
Old 12-13-2020, 12:38 PM
terrye terrye is offline
 
Join Date: Feb 2010
Location: Vancouver, BC, Canada
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Quote:
Originally Posted by cgroves View Post

And best of all, power is constant so you get some outrageous cruise speeds at high altitude.
Limiting factor is VNE in true airspeed of the airframe at high altitude, not the engine power.
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  #6  
Old 12-13-2020, 03:30 PM
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bruceh bruceh is offline
 
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Location: Ramona, CA
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I know a guy in the middle of building an RV-8 that is going to put an electric motor in it. He's waiting for some improvements in battery technology. Basically, he will be able to take off, go do some 30 minutes of aerobatics and come back and land with 30 minutes of reserve. Definitely not a cross country machine.
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  #7  
Old 12-13-2020, 05:35 PM
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Mike S Mike S is offline
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Location: Dayton Airpark, NV A34
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OHHH keep going about how wonderful electric flight is......

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OK, bit of sarcasm on my part, but folks need to be defining the mission first, just like any other discussion on what to build or how to equip it.

Electric flight may be fine for some limited uses------as it stands at this time. Who knows what the future will bring?

To be useful for many folks it needs to improve a lot. How far can you fly in a single day cross country compared to a gasoline powered aircraft? At the same speed and load?

Biggies for me are flight time, charge time, and availability of locations for getting charged. And cost.
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Last edited by Mike S : 12-13-2020 at 05:48 PM.
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  #8  
Old 12-13-2020, 06:52 PM
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Lenny Iszak Lenny Iszak is offline
 
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Location: Palm City, FL
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It's going to be a while until we get to travel in electric planes mostly because of charging infrastructure, but having a fun plane to do some aerobatics in is not that far off. Acro planes don't have a lot of fuel to begin with so flight times would be fairly easy to match with electric power. You also can't be doing that for 3 hours, 30 minutes is plenty.
It might be weird though to zip around pulling Gs without the engine noise.
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  #9  
Old 12-14-2020, 12:10 PM
gdrudolph gdrudolph is offline
 
Join Date: Jul 2019
Location: Mountain View, CA
Posts: 7
Default Electric airplanes are getting tantalizingly close to a commercial breakthrough

Click bait title for sure but some merit...

For $140,000, you can fly your own electric airplane. The Slovenian company Pipistrel sells the Alpha Electro, the first electric aircraft certified as airworthy by the Federal Aviation Administration (FAA) in 2018. Itís a welterweight at just 811 pounds (368 kilograms), powered by a 21 kWh battery packóabout one-fifth the power of what youíd find in a Tesla Model S. For about 90 minutes, the pilot training plane will keep you and a companion aloft without burning a drop of fossil fuel.


https://qz.com/1943592/electric-airp...ric%20aviation.
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  #10  
Old 12-14-2020, 12:42 PM
Mike S's Avatar
Mike S Mike S is offline
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Location: Dayton Airpark, NV A34
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Default Classic case of NIMBY

Quote:
Originally Posted by gdrudolph View Post
without burning a drop of fossil fuel.
Other than at the power plant that generates the electricity to charge the battery.

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Flying as of 12/4/2010

Phase 1 done, 2/4/2011

Sold after 240+ wonderful hours of flight.

"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."

Last edited by Mike S : 12-14-2020 at 12:45 PM.
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