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 Post subject: Aris CG and settings
PostPosted: 29 Apr 2007 09:37 pm 
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Joined: 26 Feb 2004 05:31 pm
Posts: 741
Location: 沙田
我都知呢D係軍事秘密黎架啦﹐不過如果有人可以透露下既話就可以慳番D時間﹐仲可以提高隻機挨到 HK F3F Open 既機會. 有無人可以講下咁呢 ?


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 Post subject:
PostPosted: 29 Apr 2007 09:50 pm 
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Joined: 26 Feb 2004 03:51 pm
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Location: Hong Kong
話明


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 Post subject:
PostPosted: 29 Apr 2007 09:55 pm 
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Joined: 26 Feb 2004 05:31 pm
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Location: 沙田
唔。。。可以排除103mm CG 位呢個 setting 了。 一定係前少少至真。唔知 snap flap 又要儘量避免用邊個 setting 咁呢 ﹖


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 Post subject:
PostPosted: 29 Apr 2007 10:20 pm 
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Joined: 26 Feb 2004 03:51 pm
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Location: Hong Kong
Y C Lui wrote:
唔知 snap flap 又要儘量避免用邊個 setting 咁呢 ﹖


Snap flao 有咁大 set 到佢有咁大,總之轉彎抽到佢唔反肚就得架啦!


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 Post subject:
PostPosted: 29 Apr 2007 10:38 pm 
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Joined: 26 Feb 2004 06:07 pm
Posts: 632
Location: Hong Kong
YC,

Stanley D setting 好大,可能我的setting較適合你-

CG: 104mm

Normal
Aileron : +13/-10mm
Elevator: +7/-7mm
Rudder: +7/-7mm
Aileron-to-flap: Max Aileron to 5mm Flap
Snap flap: Flap -7.5mm, Alieron -2.5mm

Thermal
Aileron: -3mm
Flap: -8mm

Speed
Aileron: +1mm
Flap: +1.5mm

Butterfly
Aileron : +10mm
Elevator: -4mm
Flap: -35mm

+=向上
-=向下


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 Post subject:
PostPosted: 31 Jul 2007 09:05 am 
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Joined: 26 Feb 2004 05:08 pm
Posts: 2944
Location: Hong Kong
Can anyone help me .. . .

Aris questions:

1, For 35MHz, can I put the antenna inside the fuselage?

2, What is the size of the ballast?


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 Post subject:
PostPosted: 31 Jul 2007 04:47 pm 
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Joined: 26 Feb 2004 07:54 pm
Posts: 1660
Location: Tai Po, HK
I'm using 35Mhz.
My aris have an extension wire which drop back from the tail for about 10 inches.
Works OK so far.


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 Post subject:
PostPosted: 31 Jul 2007 04:54 pm 
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Joined: 26 Feb 2004 07:54 pm
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Location: Tai Po, HK
Stanley wrote:
Y C Lui wrote:
唔知 snap flap 又要儘量避免用邊個 setting 咁呢 ﹖


Snap flao 有咁大 set 到佢有咁大,總之轉彎抽到佢唔反肚就得架啦!


呢樣就真係各拖各法!
有D慢風情況下,我直頭關左個 snap flap 唔用,飛得重快!


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 Post subject:
PostPosted: 31 Jul 2007 08:04 pm 
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Joined: 26 Feb 2004 06:07 pm
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Location: Hong Kong
The tail part of Aris fuselage is made by GRP instead of carhon. I've tried a standard 35MHz PCM receiver without any extended antenna and the result is fine.

For the ballast, it is around 24.5mm diameter.


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 Post subject:
PostPosted: 02 Aug 2007 02:12 pm 
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Joined: 26 Feb 2004 05:08 pm
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Location: Hong Kong
Tried the Sanwa SDX762 on the V-tail. The response is very fast and they are very accurate.

As advised by Ah Wing, I cycled all the SDX762 300 cycles before installing on the model.

So far, so good!

And for the reliability, well, time will tell. But my planes usually cannot last longer than the servos . . . :P


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 Post subject:
PostPosted: 02 Aug 2007 10:05 pm 
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Joined: 03 Mar 2004 07:31 pm
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CM wrote:

Quote:
for the reliability, well, time will tell. But my planes usually cannot last longer than the servos . . .


You are dam right!!
:twisted: :evil: :twisted: :evil:


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 Post subject:
PostPosted: 02 Aug 2007 11:15 pm 
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CM Cheng wrote:
for the reliability, well, time will tell. But my planes usually cannot last longer than the servos . . . :P


Especially, the neck breaks first :evil: :evil: :evil: :evil: :evil:


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 Post subject:
PostPosted: 02 Aug 2007 11:44 pm 
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Location: Hong Kong
Angus wrote:
CM Cheng wrote:
for the reliability, well, time will tell. But my planes usually cannot last longer than the servos . . . :P


Especially, the neck breaks first :evil: :evil: :evil: :evil: :evil:


Not on my plane, for I have openned a BIG hole before the neck !!


Image

Image

Image 8)


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 Post subject:
PostPosted: 03 Aug 2007 01:37 am 
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Joined: 12 Jan 2005 12:20 pm
Posts: 1012
Location: Shatin (Tai Wai)
Ah ya C M ...informed you too late to reinforce Aris neck along the build :!: Angus is right that the neck of Aris is a bit weak :!:

Also please consider test out the retention capability of those Sanyo NiMH batteries installed in your Aris :!: I have no experience on 2700 mA type (as shown) but I've already gave up all same type of Sanyo NiMH 2500 mA batteries due to their poor retention capability : Even not use - the battery power will disappear very quickly :!:

See if you want catching up with Ah Yeung as he performed good test among different types of AA size NiMH batteries (4 x 1.2V for 4.8V) :idea:

Good luck :!:


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 Post subject:
PostPosted: 03 Aug 2007 12:01 pm 

Joined: 02 Aug 2004 10:14 am
Posts: 621
Hi CM,
I don't have Aris but I wonder if it helps if you bridge the two servos with a graphite plate and then rest it somewhere on the "I-beam" structure.
For the RX battery, the type you are showing has very short self storage life. It is already confirmed by many users. The half-life is just 2 days. You will be surprised where has all the energy has gone after one week. On the other hand, this type of battery can sustain high current charge/discharge. So it is good for freshly charge and immediate use.
Some pilots stick to Nicad for its low internal resistance. With the evolution of technology, the Nimh has no higher resistance than the Nicad anymore while carrying good capacity.
I have a sophisticated battery analyser for bench testing. I will recommend the Sanyo's eneloop. Its self life for a fully charged pack is one year! (GP has similar product but I have no idea on its performance).


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