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Old Feb 27, 2013, 09:53 PM
Team JR
Medford, NJ
Joined Jan 2004
317 Posts
Brakes, SFGs. I often make initial flights without various aerodevices…and then add them incrementally so I can assess the effects on flight performance. Should an aerodevice not be needed….it is just added weight. I test flew the plane as shown this past weekend in the small demo space at the WRAM show. CG is in the middle of the recommended location, 142 mm from the wing leading edge. The demo area was quite turbulent, so I couldn’t really assess trim or CG. Power seems quite good and very easy to fly constant speed. Downline braking was good, even in the small space. I can’t wait to fly this plane in a good indoor space.

For those (in North America) interested in Spies kits (or the V6 Arrow), I generally have them with me at events, or can ship, and they are also available from Fancy Foam and Skip Miller.

Regards,

Dave
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Old Mar 04, 2013, 02:08 PM
Fast and getting faster!
Albany County, New York, United States
Joined Jul 2003
1,543 Posts
I just put one together a week ago, and flew it for the first time this weekend!! I had brought over 5 planes with me to fly during the day, and spent the day flying the Spies , best flying F3P airframe I have flown yet!!! Smooth, crisp, and tracks near perfect. Now all I need is that fancy dual motor unit and I`ll be all set!
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Old Mar 04, 2013, 06:30 PM
200 mph club
r/cmark's Avatar
United States, AZ, Fort Mohave
Joined Mar 2005
869 Posts
Finally finished! AUW is 106 grams with a Turnigy nano-tech 300mah battery weighing 17 grams.

I will try the flight test (with video) tomorrow!
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Old Mar 05, 2013, 03:24 AM
F3A Team Finland
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Järvenpää, Finland
Joined Nov 2005
893 Posts
106 g AUW is good with that battery. You can break the 100 g barrier by using a 180 mAh battery and a carbon prop. Every gram counts!

I have a Spies myself but it is the milled one. Maybe I should try the mylar version as well. Don is going to be present at the Finnish Open F3P in three weeks...
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Old Mar 05, 2013, 07:27 AM
Fly lower!
aerolite's Avatar
West Texas
Joined Jan 2005
2,391 Posts
Quote:
Originally Posted by Finnspeed View Post
106 g AUW is good with that battery. You can break the 100 g barrier by using a 180 mAh battery and a carbon prop. Every gram counts!

I have a Spies myself but it is the milled one. Maybe I should try the mylar version as well. Don is going to be present at the Finnish Open F3P in three weeks...
what is the weight difference between the mylar and the milled? Just curious.

aerolite
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Old Mar 05, 2013, 09:58 AM
F3A Team Finland
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Järvenpää, Finland
Joined Nov 2005
893 Posts
Donatas actually answered that question already in post #13. He weighed the airframe parts and got 7.2 grams difference. That was the first prototype production though so that might have changed a bit.
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Old Mar 05, 2013, 10:24 AM
Fly lower!
aerolite's Avatar
West Texas
Joined Jan 2005
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Quote:
Originally Posted by Finnspeed View Post
Donatas actually answered that question already in post #13. He weighed the airframe parts and got 7.2 grams difference. That was the first prototype production though so that might have changed a bit.
yep, I missed that! thanks for help with the answer.
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Old Mar 05, 2013, 06:10 PM
200 mph club
r/cmark's Avatar
United States, AZ, Fort Mohave
Joined Mar 2005
869 Posts
Just before sunrise. Wind was about 2-3 mph. I am never going to be a championship level flyer but I have a lot of fun practicing! This is the old F3P-AP sequence. It is going to take a while to get used to flying a plane this light (106 grams). The old Osiris V2 was 130 grams that 24 grams makes a BIG difference!

Spies first flight old F3P-AP
Spies First Flight (2 min 30 sec)


I have flown the Spies up until now with out the SFG's on the tips of the ailerons and elevator. I installed them last night a flew today. The verdict is although they add some weight the performance on the 'side' is improved. I am going to keep them on!

Spies with SFG's (0 min 0 sec)
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Last edited by r/cmark; Mar 18, 2013 at 09:03 PM. Reason: added new video
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Old Mar 27, 2013, 06:53 PM
Half way there
bill clark's Avatar
USA, FL, Ocoee
Joined Sep 2008
1,203 Posts
you know you have a great wife when she buys you a cool, high tech airplane for your birthday . My Spies probably wont brake ground for a couple months because I will be installing a new control system I have been working on and the contra drive I am machining not to mention the hours spent in meticulous assembly
My only question so far is how do you pronounce "Spies"?
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Old Mar 27, 2013, 10:45 PM
200 mph club
r/cmark's Avatar
United States, AZ, Fort Mohave
Joined Mar 2005
869 Posts
Tried the 'new' Scorpion S-1804-1650KV motor today. It weights 1.5(~) grams less than the Hacker 10-15s. It did not have nearly the power of the Hacker 10-15s. It did not have enough power for the 106 gram Spies.
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Old Mar 28, 2013, 06:03 PM
Half way there
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USA, FL, Ocoee
Joined Sep 2008
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anyone else having a problem getting to donatasdesign.com? I have been trying the last couple days
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Old Mar 28, 2013, 09:51 PM
200 mph club
r/cmark's Avatar
United States, AZ, Fort Mohave
Joined Mar 2005
869 Posts
Just finished Spies number 2. Came out at 97.8 grams with a Turnigy nano-tech 120mAh 2S 25C Lipo Pack and the Scorpion S-1804-1650KV motor. That's as light I can build it (using the stock parts). We will see if the Scorpion can handle 97.8 grams!
.
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Old Mar 29, 2013, 05:51 AM
F3A Team Finland
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Järvenpää, Finland
Joined Nov 2005
893 Posts
That is an excellent weight for the kit Spies. I think that Scorpion should be able to handle it but I recommend getting a better and lighter prop than the 8" GWS.

Based on the kv of that motor, I'd start experimenting with the Glavak SG 9 x 2.8. It is more than 2 grams lighter than the GWS and has more optimal pitch for F3P. With the GWS, the motor might be well outside of the best efficiency.
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Old Mar 29, 2013, 08:14 AM
Registered User
Warsaw & Gdynia, Poland
Joined Sep 2005
199 Posts
I had a Spies with AUW of about 92g with the scorpion motor and 2s180mAh batteries. The best prop proposed by Glavaks was their 9x2,5 slim. The power was ok for the whole schedule, so you should be happy with it.
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Old Mar 29, 2013, 09:03 PM
200 mph club
r/cmark's Avatar
United States, AZ, Fort Mohave
Joined Mar 2005
869 Posts
You guys were right at less that 100 grams the Scorpion has enough power and no extra.

What Glavak prop is best for a Hacker A10-15S Motor?


Thought I would run some tests:

Hacker vs Scorpion
180mAh Nano Batt.
8x4.3 prop
.
.
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