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Aviation Jets Sparrow CG

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Aviation Jets Sparrow CG

Old 10-31-2019, 04:53 PM
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CARS II
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Default Aviation Jets Sparrow CG


Looking for the CG for this jet, a club member bought one recently and he needs info on it, like travel distances on the controls and CG. it was sold by Pacific Jets, anyone?

Thank you.

Last edited by CARS II; 10-31-2019 at 04:55 PM.
Old 10-31-2019, 05:22 PM
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Thud_Driver
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Global Jet Club sells this jet now. Here are the recommended numbers:

There should have been 2 wooden plates included to slip over the spar between the fuse and wing to hang the jet to balance.

The plates will give a Cg at 330 mm which works just fine.

Aileron
H – 25 mm
M – 20 mm
L – 18 mm

Elevator
H – 30 mm
M – 20 mm
L – 15 mm

Rudder
20 mm

Flaps
Mid 50 mm
Full 95 mm

Crow
13 mm

Cg
305 mm – 330 mm

Last edited by Thud_Driver; 10-31-2019 at 05:30 PM.
Old 10-31-2019, 05:59 PM
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Awesome! It's what we need.

Thank you much
Old 10-31-2019, 06:26 PM
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Hi Thud_Driver,
thanks for the reply on the Sparrow!
IS there anything I should look out for regarding the Sparrow or do you have any recommendations with your experience with this model
thanks,
rc3dflyr
Old 10-31-2019, 08:02 PM
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Just to be clear, I have not flown this jet. I've done the install and setup on 2 Sparrows for Mike Lin at GJC, one with an Acex 140 and the other with a P-180RX. He's been very positive about the way it flys.

The main thing is that you are going to have to add weight to the nose. Even with everything well forward and the batteries all the way in the nose. So use large capacity batteries.




Old 10-31-2019, 08:10 PM
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You should have received plywood plates like these in the photo to do the Cg check.

Old 11-01-2019, 07:37 AM
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Nice job on the installs!. Thanks for the info.
Old 11-01-2019, 10:03 AM
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Yeah, Mike likes lots of gadgets in his jets and wants it to look nice too.
Old 11-01-2019, 11:31 AM
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Very nice indeed, when I grow up, I want to be able to do installs like you
Old 11-01-2019, 04:17 PM
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Old 11-01-2019, 04:26 PM
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I built one this year. I ordered the vectored thrust unit for mine. Iím balanced at 49mm in front of the mains according to Xicoy balancer. Like said before build as far forward as possible. I have 2x 2s5000 Lipoís and a 3s5000 Lipo in the nose along with 8oz of lead. I blew the pipe up with the Rhino last week. Ordered a new pipe from Grumania and hoping that itís light enough to remove all the lead from the nose.
Old 11-02-2019, 10:26 AM
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There's a ton of wires under those boards. Not fun if you have to get in there and mess with any of it.

I painted the equipment boards with Krylon. I don't know what jesse2357 used for his.

https://www.krylon.com/products/fine...extured-finish

Quick sanding with 320, no primer and blue painters tape to mask the places where the velcro goes. Several colors available, covers nicely, 2 - 3 coats. Around $12 per can.

I decided the cutouts for the wires looked bad so I 3D printed some liners for the holes to make it look better.
Old 11-02-2019, 12:40 PM
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I saw those, I thought they were grommets.
Old 11-02-2019, 03:11 PM
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I purchased this Sparrow used with 6 flights Kingtech 120 Jr8911s Just need to get batteries I noticed it has stick on weights in the nose gear compartments for CG


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