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03-07-2012, 06:57 PM
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Join Date: Dec 2008
Location: Big Sandy, WY
Posts: 2,567
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I think what we're really waiting for could be a lithium air battery. Nevereverwrong Wiki claims theoretical 12kwh/kg.
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Actual repeat offender.
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03-07-2012, 09:26 PM
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Join Date: Dec 2008
Location: Los Angeles, CA
Posts: 301
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Just thinking
If batteries ever become that cheap or practical, then gas will become really cheap. Think about it, it is much easier to lower the price of gasoline to maintain market share (and profit) then to invest in battery technology. I think gas will always be cheaper than batteries, unless the tax man gets involved. JMHO. I would love to see batteries get cheaper, just to compete with OPEC.
My bet is we will see avgas made from natural gas before any battery technology gets too advance. i would stick with an "autogas" RV.
Reminds me of the movie Las Vegas Vacation, the guy sells his kidney because technology is advancing to fast and wanted to make sure he could still get top dollar. 
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03-07-2012, 09:51 PM
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Join Date: Mar 2007
Location: Sonoma County
Posts: 3,821
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Cafe foundation on electric flight........ http://cafefoundation.org/v2/gfc_main.php
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VAF #897 Warren Moretti
2019 =VAF= Dues PAID
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03-07-2012, 09:54 PM
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Join Date: Sep 2009
Location: London
Posts: 167
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you will find most of the battery manufacturers are owned by the same oil companies
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03-07-2012, 10:07 PM
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Join Date: Mar 2007
Location: Sonoma County
Posts: 3,821
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Quote:
Originally Posted by bkthomps
ironic username given the post content
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Gasman = Propane............. Propane is currently less than $2.50 per gallon. Will a Lycoming run on propane??? Yes it will. Is it practical?....... No!
Over 100 octane and no fuel pump. Propane is 4.2 lbs. per gallon...... 
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VAF #897 Warren Moretti
2019 =VAF= Dues PAID
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03-07-2012, 11:13 PM
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Join Date: Jan 2005
Location: 57AZ - NW Tucson area
Posts: 10,011
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Quote:
Originally Posted by gasman
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Yes... and as I said on my calculations post - much better suited to a powered sailplane, even if used in consant "engine-on" mode rather than a sport RV-3..
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Gil Alexander
EAA Technical Counselor, Airframe Mechanic
Half completed RV-10 QB purchased
RV-6A N61GX - finally flying
Grumman Tiger N12GA - flying
La Cholla Airpark (57AZ) Tucson AZ
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03-07-2012, 11:42 PM
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Join Date: Oct 2009
Location: Victoria, BC, Canada
Posts: 3,932
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Quote:
Originally Posted by Lux Wrangler
First it would have to be practical in a car, before it would become economical in the marketplace and be available for your plane.
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Because there are hundreds of practical car engines that run on gas that have made their way into the aviation world, right?
No, this revolution will have to start the same way all alternative engines do... With significant skepticism, derision, and ridicule from many pilots of Lycoming-powered aircraft. It's a sad but true fact that all of these options (automotive gas or electric) will initially be less practical than a Lycoming.
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Rob Prior
1996 RV-6 "Tweety" C-FRBP (formerly N196RV)
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03-08-2012, 12:55 AM
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Join Date: Mar 2007
Location: Sonoma County
Posts: 3,821
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Quote:
Originally Posted by az_gila
Yes... and as I said on my calculations post - much better suited to a powered sailplane, even if used in consant "engine-on" mode rather than a sport RV-3..
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Gil, I understand what you are saying. But, I don't have a sailplane. I do have an Rv3 ready for a motor. I am looking for a one hour local flight. The RV3 is the cheapest and best built airframe on the market now. And with wing tip extensions, it will do just fine on low power.
I did not mean to imply that the electric motor will replace the Lycoming and perform the same. The RV3 only uses 38 Lycoming horse power to fly at a true airspeed of 100 stat. mph.
By exchanging the fuel/battery tanks and installing the Lycoming and motor mount and removing the wing tips, the three can be returned to stock form.
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VAF #897 Warren Moretti
2019 =VAF= Dues PAID
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03-08-2012, 08:55 AM
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Join Date: Feb 2005
Posts: 110
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I think electric powered flight will become practical, but
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Because there are hundreds of practical car engines that run on gas that have made their way into the aviation world, right? - Snowflake
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That's right. Airplanes have internal combustion, piston engines that run on gasoline, just like "hundreds of practical car engines".
Quote:
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No, this revolution will have to start the same way all alternative engines do... With significant skepticism, derision, and ridicule from many pilots of Lycoming-powered aircraft. It's a sad but true fact that all of these options (automotive gas or electric) will initially be less practical than a Lycoming. - Snowflake
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High performance cross country airplanes that need expensive battery replacement after 400 flights is a lot less practical.
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Jim Peck
San Francisco Bay Area
RV-7
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03-08-2012, 01:38 PM
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Join Date: Mar 2007
Location: Sonoma County
Posts: 3,821
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Quote:
Originally Posted by Lux Wrangler
High performance cross country airplanes that need expensive battery replacement after 400 flights is a lot less practical.
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But that is not what this thread is about............
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VAF #897 Warren Moretti
2019 =VAF= Dues PAID
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