Participation

Sun Jan 9 20:41:59 AKST 2005

They're li-poly batteries with a 21C continuous discharge rate that are the
same size and weight as the older 10C stuff. So for example on my Supreme,
instead of running  a 10s3p 6000mah at a max current of around 75a burst and
60a continuous, I can now run a 10s2p 4000mah at about 80a continuous
without any problem, AND, I cut 33% of the battery weight in doing so.

I can't say who they're from yet as they're still testing to verify the
battery life as used above.  

I thought before that it would take 1 evolution of the batteries to make
them easily usable in F3A without resorting to drastic measures and it looks
like I was correct there. Now if only the PRICE would come down, they could
be more accessible to everyone.

-Doug

> -----Original Message-----
> From: discussion-request at nsrca.org 
> [mailto:discussion-request at nsrca.org] On Behalf Of Norm500
> Sent: Sunday, January 09, 2005 9:33 PM
> To: discussion at nsrca.org
> Subject: Re: Participation
> 
> Boy, what a tease that is.  Maybe you're not a liberty to 
> divulge details, but about something like when the rest of us 
> will be able to see these.
> 
> Norm
> 
> ----- Original Message -----
> From: "Doug Cronkhite" <seefo at san.rr.com>
> To: <discussion at nsrca.org>
> Sent: Sunday, January 09, 2005 9:25 PM
> Subject: RE: Participation
> 
> 
> > With the new batteries I saw yesterday.. weight will no longer 
> > be an issue.
> >
> > -Doug
> >
> >
> >
> >
> >
> >  _____
> >
> > From: discussion-request at nsrca.org 
> > [mailto:discussion-request at nsrca.org] On
> > Behalf Of RC Steve Sterling
> > Sent: Sunday, January 09, 2005 9:20 PM
> > To: discussion at nsrca.org
> > Subject: RE: Participation
> >
> >
> > Yes-- you can weigh the airplane without the electrons 
> > (uncharged), but the
> > fuel container (battery) must be installed. Not going to help 
> > much.
> >
> > -----Original Message-----
> > From: discussion-request at nsrca.org 
> > [mailto:discussion-request at nsrca.org]On
> > Behalf Of John Pavlick
> > Sent: Sunday, January 09, 2005 12:07 PM
> > To: discussion at nsrca.org
> > Subject: RE: Participation
> >
> >
> > Randy + Norm,
> > I've seen it written as:
> > "4.3. Weight and Size. No model may weigh
> >
> > more than five (5) kilograms (11 pounds) gross, but
> >
> > excluding fuel, ready for takeoff. No model may
> >
> > have a wingspan or total length longer than two (2)
> >
> > meters (78.74 inches)."
> >
> > If you consider a battery as the "fuel" for an electric plane... 
> > Just a
> > thought.
> >
> > John Pavlick
> > http://www.idseng.com <http://www.idseng.com/>
> >
> >
> >
> >
> > -----Original Message-----
> > From: discussion-request at nsrca.org 
> > [mailto:discussion-request at nsrca.org]On
> > Behalf Of Randy
> > Sent: Sunday, January 09, 2005 2:57 PM
> > To: discussion at nsrca.org
> > Subject: Re: Participation
> >
> >
> >
> > I think electric are weighted without the pack.  At least I have 
> > seen it
> > written on this list that way/
> >
> > Randy
> >
> > ----- Original Message ----- 
> > From: MKMSG at aol.com
> > To: discussion at nsrca.org
> > Sent: Sunday, January 09, 2005 2:32 PM
> > Subject: Re: Participation
> >
> >
> > In a message dated 1/9/05 12:57:21 PM Central Standard Time,
> > Norm500 at comcast.net writes:
> >
> > Just some thoughts from an electric flyer that hasn't started in
> > Pattern yet.  I have flown electric power in IMAC, but am
> > interested in Pattern because of the 2-meter size limit.  My 
> > IMAC
> > plane, a 2-meter Staudacher which weighs just over 13 lbs. RTF,
> > and is as large as I want to go.  In larger electrics the price
> > starts going up exponentially, but 2-meters start looking rather
> > small alongside of the now typical IMAC planes.
> >
> > BTW, my battery pack weighs just under 3 lbs. so if the rules 
> > were
> > ever changed to allow electrics to be weighed without the pack,
> > I'd only be at about 10 lbs.  Not too bad for a plane that was
> > originally built and flown with a Quadra gas engine.
> >
> > Anyway, the point of all this is that you might be able to start
> > attracting some electric powered flyers that want to compete
> > simply because of the 2-meter limit on size.  I know it's not
> > something that's going to happen overnight, but changing the 
> > rule
> > about weighing with the battery installed would surely help.  I
> > also know that some of the top rung people are already flying
> > electric pattern, but with state of the art planes that's hard 
> > for
> > entry level builders to achieve.
> >
> > I've been trying to decide on a pattern plane to build for some
> > weeks now.  I'd like it to be a 2-meter if for no other reason
> > than my eyesight isn't very good and the larger planes are 
> > easier
> > to see.  Thinking of building a Typhoon 2K with Mike Hester's
> > modifications, but the project looks daunting to someone who's
> > never built a wing with tubes, adjustable wing and stabs, etc.
> > Also have been considering the Focus II, but figure it will be
> > overweight with the batteries.
> >
> > Oh well, that's my input for today.
> >
> > Norm
> >
> >
> > Norm: Because most pattern enthusiasts fly glow powered models, 
> > there really
> > hasn't been much discussion or concern regarding how 
> > glow/gas/electric
> > pattern aircraft are weighed.  Competition rules should be as 
> > fair as
> > possible when applied across the board to all the different 
> > types of models
> > authorized to compete in a given category.  Rather than weigh 
> > electric
> > pattern ships without batteries, it's my personal view that 
> > either 1) the
> > weight limit for pattern should be eliminated, or 2) weigh all 
> > aircraft
> > types  -- gas, glow, or electric -- ready to fly....with fuel or 
> > batteries
> > as the case may be.  I'm not pro or con any particular type of 
> > power plant.
> > I've used glow engines for nearly 55 years and currently have 
> > two electric
> > pattern ships on the workbench.  Our AMA competition rules are 
> > guided and
> > influenced by international FAI rules and it will be interesting 
> > to see how
> > this issue is handled as more and more modelers move to forms of 
> > power other
> > than glow fuel.
> >
> > Mike Moritko
> >
> > 
> 
> 
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