[SPAM] Re: Electric for Strong .40 size

[Ron Lockhart]

OK John,

I recently finished a modified Tiger II electric- flys Masters easily.
It's a strong .40 size sport pattern plane.

Axi 4120 outrunner around $150
Phoenix 60 ESC     around $160
5s3p 6000mah Thunder power lipo around $275
Astro 109 Lipo charger, around $130
14x 8.5 APC E.   Draws 40 amps.

I have not pushed the battery for duration yet-
Doing masters pattern takes about 2.5 amps.
Looks like I could get two masters patterns.
Recharge takes a half hour after one masters pattern.

My modified Tiger with the above LiPo weighs 5 1/4 lbs.
without batt is
If you put this stuff in an ARF that weighs more, performance
will of course suffer some.  You could get some of that back
by going to bigger prop, of maybe a 5s2p to save some weight.

Later, Ron Lockhart

----- Original Message ----- 
From: "John Ferrell" <johnferrell at earthlink.net>
To: <discussion at nsrca.org>
Sent: Monday, May 30, 2005 10:13 AM
Subject: Re: [SPAM] Re: Glow Engine Vs. Electric Engine for 2 m' pattern
plane


> You fellows have done a good economic review of the flat-out electric
> airplane.
> How about considering a lower level entry airplane? Are they at all
> competitive price wise?
> Consider something with ONE of those $325 batteries... Is that enough to
> power a 90-size airplane?
>
> Also, I am not believing electric motors and gear boxes run forever. Are
> they rebuildable or are they junk at some end-of-life?
>
> John Ferrell
> http://DixieNC.US
>
> ----- Original Message ----- 
> From: "Adam Glatt" <adam.g at sasktel.net>
> To: <discussion at nsrca.org>
> Sent: Saturday, May 28, 2005 11:14 PM
> Subject: Re: [SPAM] Re: Glow Engine Vs. Electric Engine for 2 m' pattern
> plane
>
>
> > If one were to run the numbers for Thunder Power batteries @ $325 each
> > half, it works out to $1300 for two batteries. If you only have two
> > batteries, I hope you enjoy watching other people fly (or take your glow
> > plane). Personally, I consider three batteries the bare minimum for
> > practicing pattern, which puts that at $1950 for batteries only.
> >
> > Guessing 200 flights per battery (probably a overestimation), that is
> > $3.25 per flight.
> > Guessing 6 flights per gallon with a 1.60DZ (perhaps an overestimation),
> > that is $3.33 per flight.
> >
> > The 160DZ is most comparable with the higher performance electric motors
> > (Plettenberg Xtra 25 and Hacker C50XL), each costing $400. A controller
is
> > $250-350.
> >
> > Two battery chargers is also a bare minimum. They will last forever, so
> > spending extra on more is a good investment.
> >
>
>
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