20-02-2011, 08:29 PM
An almost-maiden - I chucked my PT20 back in the air after replacing the scorpion gear with a Turnigy Plush 60 and 3542C (1100kv).
At the "recommended" prop, an 11x5 on 3s, the plane struggles to get off the runway and needs just about all the distance to get up to speed (the longer grass may have been a factor). It has enough thrust to fly about and poddle thourgh the sky but nothing for quickly evading dangerous situations or pulling out of a dive to the weeds.
I pulled the 11x5.5 and swapped into a 9x6 on 4S. It jumps! The performance was radically different but there is a danger in that WOT is not 55-60A, well over the mototr's rating at 45A and pushing the packs and speedy. Careful feeding makes a nicely satisfying flight. I'll order some 8x to pull the amps down and try again.
Just for kicks, I tried a 11x7 on 3s with similar results to the 11x5.5.
I was hoping for more from this motor. I have the same in the decathlon but couldn't launch that bcs of a dicky left aileron servo
.
[quote='yarrumevets' pid='4684' dateline='1298190512']
Date: 20 Feb 11
Conditions: Strong and gusty (even gutsy?) westerly winds, good visibility, OK strip
Aircraft: Blu-Baby (http://www.parramatta.rcflyingclub.com/m...hp?tid=262)
Pilot: "Junior" Murray
"Junior",
Nice to get it on the ground looking the same as when it went up!
What's your thought about this model being a good shape for my sons to learn on? Is it forgiving and auto-centering (or would more aggressive dihedral be required).
Steve,
Is the wing removable to allow different formats to be swapped in?
Are the internals arranged to allow for a mid/low wing version later?
At the "recommended" prop, an 11x5 on 3s, the plane struggles to get off the runway and needs just about all the distance to get up to speed (the longer grass may have been a factor). It has enough thrust to fly about and poddle thourgh the sky but nothing for quickly evading dangerous situations or pulling out of a dive to the weeds.
I pulled the 11x5.5 and swapped into a 9x6 on 4S. It jumps! The performance was radically different but there is a danger in that WOT is not 55-60A, well over the mototr's rating at 45A and pushing the packs and speedy. Careful feeding makes a nicely satisfying flight. I'll order some 8x
Just for kicks, I tried a 11x7 on 3s with similar results to the 11x5.5.
I was hoping for more from this motor. I have the same in the decathlon but couldn't launch that bcs of a dicky left aileron servo
.[quote='yarrumevets' pid='4684' dateline='1298190512']
Date: 20 Feb 11
Conditions: Strong and gusty (even gutsy?) westerly winds, good visibility, OK strip
Aircraft: Blu-Baby (http://www.parramatta.rcflyingclub.com/m...hp?tid=262)
Pilot: "Junior" Murray
"Junior",
Nice to get it on the ground looking the same as when it went up!
What's your thought about this model being a good shape for my sons to learn on? Is it forgiving and auto-centering (or would more aggressive dihedral be required).
Steve,
Is the wing removable to allow different formats to be swapped in?
Are the internals arranged to allow for a mid/low wing version later?
Drew
Code:
---------------------------------------------------------------------
Built-up
Balsa: Commercial: Depron:
Great Planes PT-20 (modified) HK Hawk 80 Index 3
Indoor Thingy Skyartec Cessna 182
Katana X lite (in construction) UM SU-26 12"WS Shoestring (Plantraco)
HK Extra 260
and a Fox chuck glider converted to RC
---------------------------------------------------------------------