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Apr 08, 2017, 10:42 AM
That thing almost hit me
Tahoed's Avatar
Still trying to use up those Corona receivers.......
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Apr 08, 2017, 01:57 PM
Slope Trash
McLoop's Avatar
You guys should have seen Goldguys Baby Boomer flying in 50k winds yesterday...that thing is amazing!
Myself and another were struggling a bit with penetration and turbulence in our wicked wings, while Frank was looping and rolling and giggling like a little girl!
Apr 08, 2017, 08:30 PM
flyin' fool
goldguy's Avatar
Thread OP
That giggling was from the adrenaline rush.

Man oh man, I'm toast today. Must be getting old.

Oh........ wait............. I am!
Jun 08, 2017, 12:52 AM
Professional amature
Great maiden session with the Boomer Jr this afternoon. Mix of ridge lift and thermal.

I figured out that this thing thermals best flying inverted! Perhaps because it has slower forward speed while inverted?

Big fun - Thanks Frank!!

Jun 08, 2017, 01:36 AM
flyin' fool
goldguy's Avatar
Thread OP

Glad to hear.

If your ever headed this way, make sure you pack it and we'll order up some SE winds here in Ladysmith for you.

Mar 27, 2018, 03:13 PM
Registered User

HK Servo Weight

Hi Frank,

What is the weight of your recommended servos?
The HobbyKing website lists 17g below the price and Add to Cart button, but in the specs lists the weight as 5.6g
That's quite a spread! All the HobbyKing servos appear to have two weights. Which one is right?

In Stock
17 g

Weight: 5.6g
Dimension: 19.8x8.2x21.2mm
Stall torque: .85kg/cm (4.8V) - 1.2kg/cm (7.4V)
Operating speed: 0.14sec/60degree(4.8v) - 0.1sec/60degree(7.4V)
Operating voltage: 4.8-7.4V
Spline Count: 20T
Servo Plug: JR (Fits JR and Futaba)
Mar 27, 2018, 04:50 PM
If it flies - I want one!
Petem's Avatar
HK servos actually have three weights:
The 17 gm is their weight for shipping calcs;
The 5.6 gm is what they claim the servo actually weighs (possibly without arm, screw, lead and plug); and
When you get it you can drop it on your scales and get the third (and real) weight.
Welcome to marketing and commerce.
Mar 27, 2018, 09:09 PM
flyin' fool
goldguy's Avatar
Thread OP
Just weighed one with arm and screw ................... 5.6 grams, or close, as my scale is not a digi.
Mar 29, 2018, 01:18 PM
flyin' fool
goldguy's Avatar
Thread OP
Another elcheapo 5 gram servo that has held up well for me so far is the TYG-1551A from HK. It has plastic grease though, but the HXT500 gear set fit perfectly.
Mar 29, 2018, 01:27 PM
flyin' fool
goldguy's Avatar
Thread OP
Don't have a hot wire slicer?

Check out the RM airfoil by Rusty Mustard here in the scratch forms. It's a flat airfoil with sanded leading and trailing edges.

Here's my Flat Stanley on it maiden as proof it works .........................

Flat Stanley (1 min 38 sec)
Last edited by goldguy; Mar 29, 2018 at 01:46 PM.
Nov 06, 2018, 11:43 AM
Registered User
Happy with my first wisel, but want to go fast!
Could you give me the root and tip chord of your 28" Boomer please
And what do you mean by:
"I modified the angles of a set of Wisel PW51 cores"
Sorry for my bad english, I'm french
Last edited by tetramonium; Nov 06, 2018 at 12:48 PM.
Nov 06, 2018, 02:37 PM
flyin' fool
goldguy's Avatar
Thread OP
Go back to post #1 for measurements.

No washout, the core is cut with a pivot arm cutter using only one template.

The Wisel has tapered leading and trailing edge, the Boomer has a tapered LE and a straight TE.
Nov 06, 2018, 04:46 PM
Registered User
Sorry, I made a mistake. My measurements questions was about your 34 " version.
Thank you for your answers, and I learned a lot from you already in the wisel thread.

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