GP2200 Improved Red

[mihah]

Dobavljive v Nemčiji, cena okoli 1300 SIT.

[Robi]

Še kar realna cena: cca 600 SIT/1000mAh

LP, Robi

[MC GAYVER]

velikost, teža

[overlord_tm]

:oops: velikost, teža

44g
4/5 sub c (D=22,6mm, H=33,5mm)

[mihah]

GP220SCHR je oznaka.

http://www.gpbatteries.com.hk/pic/220SCHR_DS.pdf

[Robi]

Ali jih ne morejo shujšati še vsaj za 9 g ?

Robi

[mihah]

Hja, potem prideš na Sanyo FAUP

Robi, kje je problem? Zadevšne so sposobne dati iz sebe na kratke roke 100+ Amperčkov in zato so še kar ugodno lahke.

Primerjava s GP3300 Sub C , vir Dave Dixon iz RCgroups

Zanimivo branje: http://www.rcgroups.com/forums/showthre ... light=2200

I just got around to testing the GP2200's. Below is the graphs for 3 packs of 2200's at 155 Amps average discharge compared to 1 pack of GP3000's and several packs of GP3300's at 165 Amps average discharge. All tests where 4.5 second bursts with 15 secs rest between.

The 3 highest lines on each graph are the 24 x GP2200 packs. The next best pack is the red line of the 18 x GP3000 pack. The next best is shown by the yellow line of the best of the 18 x GP3300 packs. The remaining lines are all 18 cell GP3300 packs.

The 24 cell GP2200 packs are putting out nearly 1000W more than the 18 cell packs so to say they are better is a bit of an understatement






The picture shows the setup.
About 300m of 3 x 1mm2 house mains cable paralleled/ trimmed to give the same resistance as the motor and controller.
ISL8 to record the voltage, time and temperature and output it as a CSV file for conversion to Excel. (You need to lie to the ISL8 and tell it it is only discharging 10 cells or so as it will switch off as soon as the load is switched in as it will think the cells have dropped to less than 0.7v/ cell with only a 0.1A load on the Shulze.)
Calibrated clamp meter with max hold function to record max Amps of each burn.
300 Amp battery isolation switch to switch the load in and out in time with the 4/ 15 sec bleeps set up on my transmitter (10GBP from caravan shops in UK). (Or a couple of 100A brushed controllers in parallel).



Thay all started the discharge at about 55 deg C (not necessarily the optimum temp) except for the best GP3300 which increased in temp a bit as there was a slight delay while I got the charger configured for discharge. (See ISL8 temp graph).
The two good packs where from Wolf and where tested tonight after having flown all last week in competition and at the practice field, P1 was supposed to be a good pack and P2 only a practice pack! The green pack was one I bought cheap after the comp with "only 1 flight on it".




Še nekaj malo off topic, ampak da misliti

Here's some actual times....

Wolf in his 45 leg flight in round 2 used 33.85s of motor for the laps, got 0.46s free duration motor and used 6 full seconds of motor for his duration; Total:40.31 secs.

Guntmar in his 43 leg flight in round 5 used 40.75secs for the laps, got 3.91 secs free duration motor and used no full seconds of motor in the duration task. Total: 44.66 secs

Although I am not up with the big guns, I came joint 7th in round 5 with Alessandro Mossa. My motor time for the 40 leg flight was 36.84 secs for the laps, 2.44 secs free duration motor and no full secs of motor in the duration task. Total: 39.28 secs



I was surprised that only 4 flights in the WC had zero second durations and even more surprised that only one perfect duration score was recorded.

Another interesting time/ fact, for those that insist that F5B planes are not gliders, is that 11.5 seconds of duration motor was all that was needed over the final three rounds to keep my Raketenwurm in the air for 30 minutes. I think several others probably used even less. This extrapolates to over 2.5 hours gliding per pack, though not quite Sunrise Sunset standards, it is definitely gliding in my opinion.

Dave


____________

Od teh "skrajnežev" se lahko marsikaj naučimo!

[mihah]

Če ste slučajno zijali v tistih 3200 W oz po domače 4.3 konjičke ...

še enkrat video kako to izgleda v realnosti:


http://ewc2004.users.btopenworld.com/

The World Championships are now over and Wolf Fickenscher won convincingly by gaining 1000 points in every round of the competition. Second was Guntmar Rueb with Markus Moeckli extremely close in thrid place. Germany won the team event with Switzerland second and Italy third. The UK pilots did well. Dave Dixon set a new UK record of 40 legs and 1030 points in the last round and came 13th overall. I came 20th and George Shering 27th. This gave the team a respectable 6th place, equalling our best ever. Many thanks to our helpers, May Shering, Kathryn Jones and Colin Seale and to our team manager, Kyri Christadoulou. Thanks also to our families for supporting us by letting us endulge ourselves.

Kyri shot some AVI's at the event. Here are a couple that may be of interest. The first is Wolf completing 43 legs which included two motor on infringements at base A. The first is after the 4th climb and the second on the last climb. To recover he just switches the motor back on and pulls hard for a loop that would break the wings off most models. Because this is in competition the model is small and all you hear is the noise of the wind..and a little applaus at the end. The second clip is of Markus at the practice field where he was able to get a lot closer to the flight. You can hear the motor accelerate the model at the top of the climb and all the lovely whistling that the model makes as it completes 44 legs.

Wolf - 30Mb
http://www.f5b.co.uk/images/pictures/wolf_2cuts_43.AVI

Markus - 33Mb
http://www.f5b.co.uk/images/pictures/ma ... 0field.AVI

[mihah]

Dave piše:


Quote:
Originally Posted by WimH
Up to 100A I can not detect any difference . But the leighter weight in my Simprop Liftoff ( about 150g lighter) makes for a much better climb and I now get 1-2 extra laps with it , better thermaling and stiil enough motor time ( ok, I "only" use 95A with my Torcman outrunner..., with hot cells that is, room temperature= only 65A!)


I have found the 16 x 2200's climb better than the 16 x3300 packs in my Raketenwurm (1620 grams v 1900 grams AUW). I'm not so sure if it is as quick in the laps though.

Here's a discharge graph showing my 16 x 2200 pack holding higher voltage and current than my 16 x GP3300 pack on the same load. Both packs are zapped and matched and the same age.




Ma že kar težko verjeti - 240 A

[Kroko]

A so te zelene tudi taprave?

[mihah]

To je to.

Zelena barva - manj šuškov
Rdeča barva - na to se "peca" modelarje

Gre za ene in iste akuje!