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Old May 02, 2005, 11:30 AM
Houng-wen Lin
GWS4CEO's Avatar
Shijr, Taiwan. DungGwan, China. City of Industry, California.
Joined Sep 2001
19,445 Posts
Yippee!
GWS New Mini Dragonfly Main rotor

GWS New Mini Dragonfly Main rotor was under test shooting.

I am very happy to test and see the result is the best among this size!

I am working on more comparison test with many others....
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Old May 02, 2005, 12:30 PM
Houng-wen Lin
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Shijr, Taiwan. DungGwan, China. City of Industry, California.
Joined Sep 2001
19,445 Posts
Some performance datas you may like to know

This is the datas for GWS new rotor standard version.

GWS current production of Dragonfly EM150 version which come with the main rotor from FEDA takes 3.3A at 260g lift. The GWS new rotor take only 3.1A.

When Max thrust FEDA rotor get 320g while take 4.6A. GWS new rotor max thrust 310g but takes only 4.2A.

GWS current production of Dragonfly EM300H version which come with the main rotor from FEDA takes 3.6A at 260g lift. The GWS new rotor take only 3.3A.

When Max thrust FEDA rotor get 350g while take 6.4A. GWS new rotor max thrust 340g but takes only 6.2A.
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Old May 02, 2005, 12:42 PM
Houng-wen Lin
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Shijr, Taiwan. DungGwan, China. City of Industry, California.
Joined Sep 2001
19,445 Posts
No wounder PHA-01 will be killed!

This is the datas for GWS new rotor professional version for EM300H.

GWS current production of Dragonfly EM300H version which come with the main rotor from FEDA takes 3.6A at 260g lift. The GWS new rotor take only 3.1A.

When Max thrust FEDA rotor get 350g while take 6.4A. GWS new rotor max thrust 380g but takes only 5.9A.

I am doing more test to show you the results I will have. Post soon.

However. I found some cheap rotor take high current but did not give you the lift thrust very well.

W brand takes 7.6A at max but only 290g lift thrust for GWS Dragonfly EM300H version.

J brand takes 7.4A at max but only 290g lift thrust for GWS Dragonfly EM300H version.

No wounder PHA-01 will be killed!

Pls do not buy cheap rotors other than GWS original supplied!
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Old May 02, 2005, 08:40 PM
Houng-wen Lin
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Shijr, Taiwan. DungGwan, China. City of Industry, California.
Joined Sep 2001
19,445 Posts
I am very supprised to get some datas of compared with W, J and Sz brabds rotors which comsume so much more current but develope very little lift thrust.

One of the rotor that I found in China perform pretty good at EM150 version. That give 280g max lift while takes 3.7A. But need to consider to use light Li-po packs only.

But not so nice to be equipped with EM300H version. I almost shocked to see the max thusrt still 280g but current jump up to 6.9A! May be need to try other way for optimization.

I will keep trying many combination to see how they work.
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Old May 02, 2005, 11:58 PM
Model Bender
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Australia, NSW, Newcastle
Joined Jun 2004
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[QUOTE=GWS4CEO]This is the datas for GWS new rotor standard version.

GWS current production of Dragonfly EM150 version which come with the main rotor from FEDA takes 3.3A at 260g lift. The GWS new rotor take only 3.1A.

GWS current production of Dragonfly EM300H version which come with the main rotor from FEDA takes 3.6A at 260g lift. The GWS new rotor take only 3.3A.

[QUOTE]

Congratulations on the new rotors!

But, according to these results, EM150 is better than EM300?

Why do we need EM300? Does the EM300 give more lift at higher speeds?
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Old May 03, 2005, 03:39 AM
Houng-wen Lin
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Shijr, Taiwan. DungGwan, China. City of Industry, California.
Joined Sep 2001
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The professional version new rotor is a great choice for EM300H flyer!

Quote:
Originally Posted by OzDragonFlyer
Congratulations on the new rotors!

But, according to these results, EM150 is better than EM300?

Why do we need EM300? Does the EM300 give more lift at higher speeds?
The standard version new rotor is designed for EM150 version get best performance. But her limmited max lift thrust of 340g at 6.2A for EM300H.

The professional version new rotor can get 380g lift thrust at 5.9A with EM300H. A great choice for EM300H flyer!
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Old May 03, 2005, 04:12 PM
Houng-wen Lin
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Shijr, Taiwan. DungGwan, China. City of Industry, California.
Joined Sep 2001
19,445 Posts
I bought many other helicopters for testing.

Hope GWS new rotor will also do some help to improve their performance.
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Old May 04, 2005, 09:37 PM
Houng-wen Lin
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Shijr, Taiwan. DungGwan, China. City of Industry, California.
Joined Sep 2001
19,445 Posts
During RCX show, I will bring this new rotors to GWS booth!

We will demo fly the GWS Dragonfly with new rotor and PHA300!
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Old May 04, 2005, 10:11 PM
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Good Job Mr. Lin
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Old May 04, 2005, 10:19 PM
Houng-wen Lin
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Shijr, Taiwan. DungGwan, China. City of Industry, California.
Joined Sep 2001
19,445 Posts
Quote:
Originally Posted by trafton
Good Job Mr. Lin
Thanks.
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Old May 05, 2005, 03:47 AM
Houng-wen Lin
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Shijr, Taiwan. DungGwan, China. City of Industry, California.
Joined Sep 2001
19,445 Posts
Some pics of this new GWS H2090.

Some pics.
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Old May 05, 2005, 04:18 PM
flying thing
lostrider's Avatar
Joined Mar 2005
562 Posts
Do you started selling?
if you cant send to distributor in Turkey, for one pieces, whats the price and total price? (cargo included)
I wanna first buyer
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Old May 05, 2005, 04:26 PM
flying thing
lostrider's Avatar
Joined Mar 2005
562 Posts
can you add my blade mod?
its basic,
only add shapes from blade tips to down, only 5 mm, in curved shape, it will increase efficiency, and helped to remove ground effect,
maybe you must add this part as "optional", with 2 tooth, 2 hole & some tape, its possible and useful.

http://www.rcgroups.com/forums/showthread.php?t=353237
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Old May 05, 2005, 07:45 PM
Model Bender
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Australia, NSW, Newcastle
Joined Jun 2004
2,871 Posts
Does the 2090 number on the rotors mean 200mm dia 90 mm pitch..?
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Old May 05, 2005, 10:30 PM
Houng-wen Lin
GWS4CEO's Avatar
Shijr, Taiwan. DungGwan, China. City of Industry, California.
Joined Sep 2001
19,445 Posts
Quote:
Originally Posted by OzDragonFlyer
Does the 2090 number on the rotors mean 200mm dia 90 mm pitch..?
Dia 20", Pitch 9".
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