Electric Weight: with or without batteries at US Nationals
Richard Strickland
richard.s at allied-callaway.com
Mon Jun 13 05:37:23 AKDT 2005
Mike,
FMA/Kokam have Discharge Protection Modules to keep us from discharging too
much--it reads the low cell and pulses to let you know you are close. I
tried 'brake off' yesterday and surprisingly got LESS time. I wonder if you
are drawing the whole time the prop spins or I was just flying more far and
wide--going to take more experimenting--but it started to pulse on the way
up on the half sq. b/4 the spins--that's too darn close! Do you like it one
way or the other?
Richard
----- Original Message -----
From: "MKMSG" <mkmsg at cox.net>
To: <discussion at nsrca.org>
Sent: Saturday, June 11, 2005 3:38 PM
Subject: Re: Electric Weight: with or without batteries at US Nationals
> Richard: I draw about 68 amps at WOT with a 22 x12 APE. I normally set
my
> timer for 9 minutes and activate it just before advancing the throttle for
> takeoff. By the time I get back on the ground, it has been around 9.5
> minutes and I normally have to put 4400 ma back into the packs using my
> Astro 109s. I also have a C50 12xl in a Yak 54. It also draws 68 amps at
> WOT using a 20 x 13 APC and consumes 4400 ma in 9.5 minutes. One has to
be
> careful not to drain these LiPo packs too close to their end point. While
> they may perform OK, their longevity will be reduced and that translates
to
> more $ for new, expensive packs. One of my TP 5S3P 6000 packs recently
> puffed after only 12 flights. Luckily, TP took good care of me and
replaced
> the bad pack for free.
>
> Mike
>
> ----- Original Message -----
> From: "Richard Strickland" <richard.s at allied-callaway.com>
> To: <discussion at nsrca.org>
> Sent: Saturday, June 11, 2005 12:12 PM
> Subject: Re: Electric Weight: with or without batteries at US Nationals
>
>
> > Mike,
> >
> > What kind of flight times are you getting? We're at 7.5 -8 minutes with
> > the
> > 3200s which is real iffy toward the end(particularly if the CD says to
> > orbit). The prototype balancing charger that is due shortly supposedly
> > will
> > give us another 10% which for us weight challanged guys(more ways than
> > one)
> > will make these a little more solid for contests and making weight. Are
> > you
> > running brake on or off?
> >
> > Thanks,
> >
> > Richard
> >
> >
> > ----- Original Message -----
> > From: "MKMSG" <mkmsg at cox.net>
> > To: <discussion at nsrca.org>
> > Sent: Saturday, June 11, 2005 11:56 AM
> > Subject: Re: Electric Weight: with or without batteries at US Nationals
> >
> >
> >> The new 5300 TP is configured as a 5S4P. The 10S setup (two TP 5300
> >> packs
> >> in series) would be 39.4 oz. which is a bit lighter than the TP 5S3P
6000
> >> packs I've been using.
> >>
> >> Mike
> >> ----- Original Message -----
> >> From: "Richard Strickland" <richard.s at allied-callaway.com>
> >> To: <discussion at nsrca.org>
> >> Sent: Saturday, June 11, 2005 10:33 AM
> >> Subject: Re: Electric Weight: with or without batteries at US Nationals
> >>
> >>
> >> > Would that be 5 or 10?
> >> >
> >> > RS
> >> >
> >> > ----- Original Message -----
> >> > From: "MKMSG" <mkmsg at cox.net>
> >> > To: <discussion at nsrca.org>
> >> > Sent: Friday, June 10, 2005 6:52 PM
> >> > Subject: Re: Electric Weight: with or without batteries at US
Nationals
> >> >
> >> >
> >> >> My 5300 pack weighs 19.7 oz.
> >> >>
> >> >> Mike Moritko
> >> >> ----- Original Message -----
> >> >> From: "Adam Glatt" <adam.g at sasktel.net>
> >> >> To: <discussion at nsrca.org>
> >> >> Sent: Friday, June 10, 2005 3:57 PM
> >> >> Subject: Re: Electric Weight: with or without batteries at US
> >> >> Nationals
> >> >>
> >> >>
> >> >> > We don't have an accurate scale at work, so the only figures I
have
> > are
> >> >> > direct from Thunder Power's website:
> >> >> > http://thunderpower-batteries.com/html/batteries.html
> >> >> > showing 560 grams each.
> >> >> >
> >> >> > -Adam
> >> >> >
> >> >> > Richard Strickland wrote:
> >> >> >
> >> >> >>Hey Adam,
> >> >> >>
> >> >> >>How much does a set weigh with any associated harness?
> >> >> >>
> >> >> >>Thanks,
> >> >> >>
> >> >> >>Richard
> >> >> >>----- Original Message -----
> >> >> >>From: "Adam Glatt" <adam.g at sasktel.net>
> >> >> >>To: <discussion at nsrca.org>
> >> >> >>Sent: Friday, June 10, 2005 9:02 AM
> >> >> >>Subject: Re: Electric Weight: with or without batteries at US
> > Nationals
> >> >> >>
> >> >> >>
> >> >> >>
> >> >> >>>Jim, the Thunder Power 5s4p 5300 pack is in stock with free
courier
> >> >> >>>shipping at parts.rctoys.com .
> >> >> >>>
> >> >> >>>I'm using a 6.0v regulator (JR servos) with my 2s lipo receiver
> > pack,
> >> >> >>>and used a mere 290mAh in 51 minutes of flight yesterday. My
> >> >> >>>fellow
> >> >> >>>team members are using Futaba servos with a 5.6v regulator, and
> > seeing
> >> >> >>>50-60mAh per a 10 minute flight. You can definitely cut receiver
> >> >> >>>battery weight. My TP 2s730 weighs 31g.
> >> >> >>>
> >> >> >>>BTW, in Canada we changed our rules this year such that electric
> >> > pattern
> >> >> >>>planes are weighed without the battery that powers the motor.
> >> >> >>>
> >> >> >>>If you want a killer deal on the 2s730 with a 5300 order, ask for
> >> >> >>>me
> >> >> >>>;>
> >> >> >>>
> >> >> >>>-Adam
> >> >> >>>
> >> >> >>>Jim_Woodward at beaerospace.com wrote:
> >> >> >>>
> >> >> >>>
> >> >> >>>>RS - Although I have taken GREAT care with the airframe weight
of
> > the
> >> >> >>>>Impact, I have used a non-exotic equipment list, so I am at 11
> >> >> >>>>lbs,
> >> >> >>>>4.5 oz with 6000 mah TP packs (2, 5S,3P). I did not use
aluminum
> >> >> >>>>wheel axles, nor replace the wheel pants, nor replace the heavy
> > wing
> >> >> >>>>tube. Also, I used the Futaba 9152 monster servo for the
rudder.
> >> >> >>>> Also, I'm using the stock steel prop nut and spinner jam nut.
> >> >> >>>> So,
> > I
> >> >> >>>>used very standard equipment, and still came close to making the
> >> >> >>>>weight. A quick solution is to purchase (if available), the
5300
> > mah
> >> >> >>>>packs, which in itself drops 4-5 oz I've heard. Dropping even 5
> >> >> >>>>oz
> >> >> >>>>may be possible just with some equipment changes. The airframe
> >> >> >>>>really
> >> >> >>>>not going to get any lighter, except some more trimming of the
> >> >> >>>>chin
> >> >> >>>>cowl flanges. I'm happy with the build and got close to the
> >> >> >>>>weight
> >> >> >>>>limit with a very standard equipment set. Also, using the 2
cell
> >> >> >>>>Li-ion, 2200 mah battery.
> >> >> >>>>
> >> >> >>>>I've heard that they may change the electric weighing procedures
> > such
> >> >> >>>>that the battery is removed at this years nats, but looking for
> >> >> >>>>confirmation before I spend a bunch more cash.
> >> >> >>>>
> >> >> >>>>Thanks,
> >> >> >>>>Jim
> >> >> >>>>
> >> >> >>>>James Woodward
> >> >> >>>>Program Manager
> >> >> >>>>B/E Aerospace Business Jet Group - Miami
> >> >> >>>>9100 N.W. 105th Circle
> >> >> >>>>Miami, FL 33178
> >> >> >>>>(305) 459-7155 Office
> >> >> >>>>(305) 459-7185 Fax
> >> >> >>>>(954) 319-0873 Cellular
> >> >> >>>>
> >> >> >>>>
> >> >> >>>>*"Richard Strickland" <richard.s at allied-callaway.com>*
> >> >> >>>>Sent by: discussion-request at nsrca.org
> >> >> >>>>
> >> >> >>>>06/10/2005 09:31 AM
> >> >> >>>>Please respond to
> >> >> >>>>discussion at nsrca.org
> >> >> >>>>
> >> >> >>>>
> >> >> >>>>
> >> >> >>>>To
> >> >> >>>><discussion at nsrca.org>
> >> >> >>>>cc
> >> >> >>>>
> >> >> >>>>Subject
> >> >> >>>>Re: Electric Weight: with or without batteries at UN Nationals
> >> >> >>>>
> >> >> >>>>
> >> >> >>>>
> >> >> >>>>
> >> >> >>>>
> >> >> >>>>
> >> >> >>>>
> >> >> >>>>
> >> >> >>>>
> >> >> >>>>ALUMINUM servo screws? Man, you must REALLY be close!?!
> >> >> >>>>
> >> >> >>>>RS
> >> >> >>>>----- Original Message -----
> >> >> >>>>*From:* _Jim_Woodward at beaerospace.com_
> >> >> >>>><mailto:Jim_Woodward at beaerospace.com>
> >> >> >>>>*To:* _discussion at nsrca.org_ <mailto:discussion at nsrca.org>
> >> >> >>>>*Sent:* Friday, June 10, 2005 7:56 AM
> >> >> >>>>*Subject:* Electric Weight: with or without batteries at UN
> > Nationals
> >> >> >>>>
> >> >> >>>>
> >> >> >>>>Hi All,
> >> >> >>>>
> >> >> >>>>Does anyone happen to know what the weighing policy will be for
> >> >> >>>>electric planes at the nats (with or without batteries)?
> >> >> >>>>
> >> >> >>>>Also - does anyone know the source for aluminum servo screws?
> >> >> >>>>
> >> >> >>>>Thanks,
> >> >> >>>>Jim W.
> >> >> >>>>
> >> >> >>>>
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