Winter / Focus / Fuel

[Troy Newman]

www.horizonhobby.com

The main page has a link to the ThunderPower battery packs.

Troy



----- Original Message ----- 
From: "Bob" <Bob at enduremed.com>
To: <discussion at nsrca.org>
Sent: Wednesday, December 03, 2003 3:40 PM
Subject: RE: Winter / Focus / Fuel


> Doug:
>
> I was just wondering what is your source for the Thunder Power LiPoly
packs?
>
>
> Bob
>
> -----Original Message-----
> From: Doug Cronkhite [mailto:seefo at san.rr.com]
> Sent: Wednesday, December 03, 2003 2:42 PM
> To: discussion at nsrca.org
> Subject: Re: Winter / Focus / Fuel
>
>
> Sure thing..
>
> Motor: Hacker C50-14XL geared.
> Controller: Jeti Hacker Master 77-3p.
> Batteries: Thunder Power 10s3p (actually 2 x 5s3p wired in series)
> Charger: Schulze ISL 6-330d x 2
> Aircraft: ZN Line Supreme
>
> Cost is unreasonable at this stage of the game. The motor and controller
> are actually not the bulk of the price. It's the batteries. Including
> everything (motor, controller, battery, chargers) I have roughly $2000
> invested. You could knock about $650 off that if you only buy 1
> 10s3p battery pack. I already had the chargers so you're looking at
> another $380 to buy a pair. I'm also developing my own mounting setup for
> the airplane (which ZN will manufacture as an option). Landing gear is
> also being designed to handle the 22x12 APC-E prop. 1st rev will be
> aluminum but a carbon gear is in the works as well.
>
> As far as weight goes, I'll have to get out the scale for exact numbers,
> but the installed weight is about 8 ounces more than a comparable glow
> installation (this is using Jason's airplane as a reference as I'm still
> building mine). Judging by the component weights of my kit and hardware, I
> think I'll be at 9.5 pounds before paint/covering so 10.5 pounds should
> be VERY workable, but keep in mind I'm looking at every gram that goes
> into the airplane to keep it as light as possible.
>
> OK.. so the disadvantages at this moment are costs, lack of completely off
> the shelf components, and the volatility of the LiPo batteries if they're
> mistreated (fire and explosion). There is also the unknown of just how
> many charge/discharge cycles these batteries can take at these current
> levels (roughly 65 amps max). These are all things I'm willing to
> risk/endure however.
>
> The advantages to me however MORE than overcome the problems.
>
> 1) lack of vibration
> 2) perfect throttle response
> 3) zero weight change/shift through the flight
> 4) low noise
> 5) no lean/rich runs
> 6) no flameouts
>
> Last and most importantly is the available practice sites for me. We have
> an electric only field here in San Diego which is 10 minutes away and
> rarely used if ever in the afternoons giving me all the flying time I will
> need.
>
> -Doug
>
>
>
> On Wed, 3 Dec 2003, JOddino wrote:
>
> > Hey Doug,
> > Could you describe your complete set-up, plane, motor, batteries, etc.,
> with
> > weight and cost.  This sure sounds like the way to go if the costs are
not
> > too unreasonable.
> > I agree 300 flights a year seems to be plenty even when you can fly all
> year
> > long.  I remember how I couldn't wait to retire so I could fly everyday.
> > Now I can but I don't go out more than 2 or 3 times a week and some
weeks
> > not at all.
> > Jim
> > ----- Original Message ----- 
> > From: "Doug Cronkhite" <seefo at san.rr.com>
> > To: <discussion at nsrca.org>
> > Sent: Wednesday, December 03, 2003 8:52 AM
> > Subject: Re: Winter / Focus / Fuel
> >
> >
> > >
> > > Hopefully none. I have 2 10s3p li-po's on the way (big hit to the
wallet
> > > there)..
> > >
> > > My chargers are Schulze.. they'll likely outlast me.
> > >
> > > -Doug
> > >
> > > On Wed, 3 Dec 2003, Wayne Galligan wrote:
> > >
> > > > How many li-po battery packs or charghers will you be going through?
> > > >
> > > > WG
> > > >
> > > > ----- Original Message ----- 
> > > > From: "Doug Cronkhite" <seefo at san.rr.com>
> > > > To: <discussion at nsrca.org>
> > > > Sent: Wednesday, December 03, 2003 10:20 AM
> > > > Subject: RE: Winter / Focus / Fuel
> > > >
> > > >
> > > > > On Wed, 3 Dec 2003, Atwood, Mark wrote:
> > > > >
> > > > > > That begs an  interesting question.
> > > > > >
> > > > > > How much fuel do people burn in a calendar year?
> > > > > >
> > > > > > I'd be interested to hear responses and where you're from (or
> maybe
> > more
> > > > specifically, how many months that fuel is spread over.
> > > > > >
> > > > > > In a competitive year (the last three not withstanding) I was
> > burning
> > > > 40-50 gal over 3.5 - 4 months (late May - Mid Sept.)
> > > > > >
> > > > > > -Mark
> > > > >
> > > > > Hmmm..
> > > > >
> > > > > I'm in San Diego.. will be flying all year round.. I don't think
> I'll
> > burn
> > > > > a single gallon of fuel this year :-P
> > > > >
> > > > > -Doug
> > > > >
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