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Old Jan 31, 2012, 05:02 AM
Houng-wen Lin
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Shijr, Taiwan. DungGwan, China. City of Industry, California.
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GWS HD props performance

GWS BL3008/16T test datas
PROPELLER (V) (A) Thrust=g; oz P=(W) Efficiency=g/w; oz/kw RPM


APC 12*8 7.4v 10.5 380.00g 13.40 77.70 4.89 172.49 4620
APC 12*8 11.1 24.7 800.00g 28.22 274.17 2.92 102.91 5700
APC 12*8 14.8 34.4 932.00g 32.87 509.12 1.83 64.57 6420

GWS HD-1280 7.4V 14.5 475.00g 16.75 107.30 4.43 156.13 4470
GWS HD-1280 11.1 25.1 917.00g 32.34 278.61 3.29 116.09 5775
GWS HD-1280 14.8 33.3 1174.00g 41.41 492.84 2.38 84.02 6465

So, how you like GWS HD props?

I like to see your test datas!

Pls post your experiences here.
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Old Jan 31, 2012, 07:24 PM
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The 9*7.5 HD is a superb prop for the 400-450 sized motors, but it is not widly used due to the hub design. Update that one to use the same kind of insert space rings that the 12*8 HD uses and I would buy 50 pieces at once. By not using the APC standard hubs on your props, you kill your market share. Its too bad, because really like your propellers.
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Old Jan 31, 2012, 11:14 PM
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Taiwan, 北市
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It'd not be hard if GWS decided to take your idea. This is a good idea for the GWS props EP8040, EP9050, HD9075 & EP1060. These props were all designed for direct driving. GWS have already released the 3-blade props with space rings in EP8040, EP9050 & EP1060. It's easy to apply the same hubs on these props.

Chen
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Old Feb 01, 2012, 08:46 AM
Houng-wen Lin
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Shijr, Taiwan. DungGwan, China. City of Industry, California.
Joined Sep 2001
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Quote:
Originally Posted by JimNM View Post
The 9*7.5 HD is a superb prop for the 400-450 sized motors, but it is not widly used due to the hub design. Update that one to use the same kind of insert space rings that the 12*8 HD uses and I would buy 50 pieces at once. By not using the APC standard hubs on your props, you kill your market share. Its too bad, because really like your propellers.
What size motor that you use to fit in?

Which motor shaft size dia. in mm?
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Old Feb 01, 2012, 04:06 PM
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Bullhead City, Arizona
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Normal motor size would be 6mm but some are still 3mm and some are 8mm. That is why the inserts like APC uses and your 3 blade props use are such a great idea!

While on this subject, why not update the hub on the SlowFly props also? The small hub there makes it very difficult if not impossible to use with anything besides the threaded 3mm shafts of the gear drive units. I realize that the props were designed to be used with those but there are many people that use them on other motors because they love how the SlowFly props work!
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Old Feb 01, 2012, 06:53 PM
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Las Cruces, New Mexico, United States
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the 9x7.5 HD is one heck of a good prop for 950 to 1100Kv motors on 3s. The Scorpion 2215-18 is my favorite motor in that size.
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Old Feb 01, 2012, 10:04 PM
Houng-wen Lin
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Shijr, Taiwan. DungGwan, China. City of Industry, California.
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Quote:
Originally Posted by JimNM View Post
the 9x7.5 HD is one heck of a good prop for 950 to 1100Kv motors on 3s. The Scorpion 2215-18 is my favorite motor in that size.
Glad to hear your comments.

Thank you.
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Old May 25, 2012, 08:57 PM
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United States, IN, Lebanon
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Never tried the props but have used just about all others an APC seems to be the best of them.. I am glad to run across this post today as I was searching for a better prop that could compare to APC. I am going to get a few an see how they perform... APC needs some competition.
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Old May 25, 2012, 10:54 PM
Houng-wen Lin
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Shijr, Taiwan. DungGwan, China. City of Industry, California.
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There is another sucessful example:

SkyArttech making a lot of small size toy RTF airplanes.

Their 4.25" propeller only give 50g thrust. Very difficult to fly their 120g little Cessna.

After change with GWS EP4530, they get very happy result!

In case that you have such similar samll RTFs, don't forget to try with GWS small propellers!

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Old May 28, 2012, 10:27 PM
Houng-wen Lin
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Shijr, Taiwan. DungGwan, China. City of Industry, California.
Joined Sep 2001
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Who is flying 400 size airplanes?

Here is some reference for you to see why a toy is different to hobby products?

The first line 8X6 is a propeller which toy maker copy APC 8X6 prop, toy makers thinking they made their smart choice to save their budget.

But if you see the performance as below, I guess that you will rather change with GWS props.





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Old Jun 02, 2012, 12:47 AM
GPT
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Quote:
Originally Posted by JimNM View Post
the 9x7.5 HD is one heck of a good prop for 950 to 1100Kv motors on 3s. The Scorpion 2215-18 is my favorite motor in that size.
Totally agree. My favorite choice of prop for GWS warbirds.
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Old Jun 16, 2012, 12:17 AM
Houng-wen Lin
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Quote:
Originally Posted by GPT View Post
Totally agree. My favorite choice of prop for GWS warbirds.
Thank you for your comment.
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Old Jun 16, 2012, 12:23 AM
Houng-wen Lin
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However, for small airplanes, GWS had many great choice for example:

http://www.gwsus.com/english/product...stem/edp50.htm

http://www.gwsus.com/english/product...tem/edp100.htm

http://www.gwsus.com/english/product...tem/edp150.htm

http://www.gwsus.com/english/product...tem/edp300.htm

http://www.gwsus.com/english/product...em/edp300h.htm
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Old Jul 08, 2012, 10:34 AM
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If it's not to difficult would someone post some pictures of these HD props. I am familiar with the slofly props that come in the kits have bought. Which is what the LHS (use to) have, but I hear reference (on other threads) to these HD props but have never seen any. Do they have a higher RPM limit?
I rewind motors and am always on the look out for different props to increase my test prop inventory for motor testing.
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Old Jul 09, 2012, 01:30 AM
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formosa
Joined Feb 2009
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GWS HD propellers

hi zeroback,

GWS HD ( Hyper Drive) servies propellers can be checked out at link:

http://www.gwsus.com/english/product...peller_edp.htm

I have the propellers packing photo attached. Thanks for your support to GWS products.
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