Electric Weight: with or without batteries at US Nationals

MKMSG mkmsg at cox.net
Sat Jun 11 12:39:09 AKDT 2005 

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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