Glow Engine Vs. Electric Engine for 2 m' pattern plane

[Bob Richards]

Richard,

You mentioned braking in the downline, do any of the
electric controllers have regenerative braking?

Bob R.


--- Richard Strickland <richard.s at allied-callaway.com>
wrote:

> Tom,
> 
> As of yesterday, 45 complete flights-P05 in an
> all-up converted 10lb.-15.5oz.Temptation, Hacker
> with a 22/12, FMA/Kokam 10s1ps 3200s with cell
> protection modules.  We are experimenting with using
> a little less amperage to extend battery flight time
> (and to stop abusing the eq.)--but I have made it
> through all flights in any wind and landed with
> power.  It uses more power in a calm day than
> windy--I've got some thoughts on that--but it'll
> take more evaluation.  It's about equivalent to a
> Bully 145 with a 16oz. tank flight time.  Wide open
> power is a little more than we need.  Flying is a
> little different--torque comes on differently and I
> haven't mastered the correct way to handle downline
> braking and spins as far as where to have the idle
> set.  Flys like a pattern airplane.
> 
> I have an Impact ready to go and  got it JUST under
> the max. wt.  I suspect I'll be able to fly it a
> little slower and extend flight times.  Orland McKee
> and I have been working with FMA helping with the
> battery evaluations.  They will have some nice
> features soon that will hopefully extend battery
> life and battery available power for flight time.  I
> have been chatting mostly via e-mail with Jerry
> Budd, Tony Frakowiack, and Jason Schulman and each
> guy has been very helpful and encouraging.  The guys
> at FMA have some great ideas also and are working at
> having some very competitive battery systems and
> chargers. Yes, we are getting a break on
> batteries--but not free--and we are purchasing
> everything else at street prices.  One very cool
> item they have is we can charge up both 5 cell packs
> with one charger--but you only get a few charges out
> of one deep discharge 12v battery.  But it is rare
> that I get the time to fly more than 4-5 flights so
> I'm not impacted as of yet. A second charger and
> another deep-discharge batt. would be needed.  You
> need three sets of flight batteries.  Don't go nuts
> buying batteries as they are changing all the time. 
> There is some VERY cool stuff coming down the pike! 
>  I charge on a power supply at home.  I'm becoming
> an expert with Velcro.   Good luck.
> 
> Richard
>   ----- Original Message ----- 
>   From: Koenig, Tom 
>   To: discussion at nsrca.org 
>   Sent: Sunday, May 29, 2005 5:54 PM
>   Subject: Glow Engine Vs. Electric Engine for 2 m'
> pattern plane
> 
> 
>   Ed and others
> 
>   I'm not so sure it is such a silly comparison for
> people outside of the US, where costs can be
> considerable in the fuel department. Our figures
> indicate that at we would be at 'break even' point
> if we get 100 flights a pack. Anything more and its
> gravy. We are not including things like I/C engine
> rebuilds etc either. We simply treated the packs as
> 'fuel' in our estimations. Like anything,
> maintenance and correct installation is an
> issue/learning curve...and done properly I can see
> Electric making economic rationale.
> 
>   Now if anyone can just give us more info on how it
> actually 'feels' to fly the FAI pattern?
> 
>   Anyone...please????
> 
>   best regards
> 
>   Tom
>     -----Original Message-----
>     From: discussion-request at nsrca.org
> [mailto:discussion-request at nsrca.org]On Behalf Of Ed
> Alt
>     Sent: Monday, 30 May 2005 8:39 AM
>     To: discussion at nsrca.org
>     Subject: [SPAM] Re: [SPAM] Re: [SPAM] Re: [SPAM]
> Re: Glow Engine Vs. Electric Engine for 2 m' pattern
> plane
> 
> 
>     Yes and you need to figure out the jump in your
> electric bill.  Getting silly isn't it?  It's a 2:1
> comparison, assuming the batteries last, which
> apparently, they don't.
> 
>     Ed
>       ----- Original Message ----- 
>       From: Nat Penton 
>        
>
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