Lightning Build
#351
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Tim,
You are welcome. You can use Profili or Compufoil to print out wing ribs. I am using Profili Pro version for a future project and it works very well. It has some nice features, such as the ability to adjust the trailing edge thickness, that come in handy for pattern plane design.
Jeff
You are welcome. You can use Profili or Compufoil to print out wing ribs. I am using Profili Pro version for a future project and it works very well. It has some nice features, such as the ability to adjust the trailing edge thickness, that come in handy for pattern plane design.
Jeff
#354
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RoadRunner,
It would be possible to use a gas engine, but the are a few changes that would have to be made. The Lightning was designed to use an electric motor, so there is no cowl. Additionally, since the electric motor has much less vibration, the airframe was designed lighter. With a gas motor, the front end of the fuselage should be strengthened. These modifications will add weight, but it should be posible to stay under 11 pounds. The official weight of mine at the 2011 Nats was 4612 grams.
Jeff
It would be possible to use a gas engine, but the are a few changes that would have to be made. The Lightning was designed to use an electric motor, so there is no cowl. Additionally, since the electric motor has much less vibration, the airframe was designed lighter. With a gas motor, the front end of the fuselage should be strengthened. These modifications will add weight, but it should be posible to stay under 11 pounds. The official weight of mine at the 2011 Nats was 4612 grams.
Jeff
#355
Under 11 lbs - EZ.
I have built stuff using ZDZ40 -well under 11 lbs
The BIG problem in using gassers is was and will still be the power pulses inherant in the rpm band used
Good balsa construction is the best forsoaking up th pulses (motor mounts will NOT fix this basic condition-just soften the condition some)
So I am doing - again a design using balsa /spruce -
I do have carbon fibre but basics will be wood.
I have built stuff using ZDZ40 -well under 11 lbs
The BIG problem in using gassers is was and will still be the power pulses inherant in the rpm band used
Good balsa construction is the best forsoaking up th pulses (motor mounts will NOT fix this basic condition-just soften the condition some)
So I am doing - again a design using balsa /spruce -
I do have carbon fibre but basics will be wood.
#356
My Lightning is done! Should be flying it this week. I will post pictures as soon as possible. Very excited to get this thing in the air. Since I have Dave Snow's Dynamic wings and stabs,, I am dubbing this plane "Lightning Dynamic"
More to come soon!
More to come soon!
#357

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From: Boise,
ID
Congrats; Bring it up to the pattern contest in Boise, ID this coming weekend. We would love to see it.
[link]http://www.nsrca.us/d8/2012/TreasureValleyPatternContest.pdf[/link]
http://www.nsrca.us/d8/2012/Treasure...ernContest.pdf
[link]http://www.nsrca.us/d8/2012/TreasureValleyPatternContest.pdf[/link]
http://www.nsrca.us/d8/2012/Treasure...ernContest.pdf
#367
All pictures taken with my IPhone and my one good eye.
Plane flys well. Moving the CG around right now. Does everything it should. My finish is ok,,, all paint.. I had started on a much more involved finish and ran into issues, I sanded it all back down and did this finish in a couple days with waterbase AutoAir and Chromaclear. Using the inexpensive A60 7S motor, DX18 radio, Spektrum servos throughout. Flying a contest this weekend with it. I have been flying the 2M Osiris for awhile now and Ireally feel comfortable with it. I will still fly this one, however, as I have been working on it since October and I'm pretty psyched!
Plane flys well. Moving the CG around right now. Does everything it should. My finish is ok,,, all paint.. I had started on a much more involved finish and ran into issues, I sanded it all back down and did this finish in a couple days with waterbase AutoAir and Chromaclear. Using the inexpensive A60 7S motor, DX18 radio, Spektrum servos throughout. Flying a contest this weekend with it. I have been flying the 2M Osiris for awhile now and Ireally feel comfortable with it. I will still fly this one, however, as I have been working on it since October and I'm pretty psyched!
#369
Shows up pretty well. The fuselage size is a fair bit smaller than the Big O. It appears a little bit smaller to me. I'm sure it will go away once Ifly it a bunch more and pick my spot in the sky more appropriately
Excited to fly my first contest in 20 some odd years. The last one I flew was in Vegas and I was flying one of my new Ariel's Ihad just started kitting. This is going to be fun!
Excited to fly my first contest in 20 some odd years. The last one I flew was in Vegas and I was flying one of my new Ariel's Ihad just started kitting. This is going to be fun!
#372
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From: Eugene, OR
gdaddy, what is different about the wings??
Looks great, Im sure you will be pleased with it. It will be interesting to see how you think it differs from the Osiris
Looks great, Im sure you will be pleased with it. It will be interesting to see how you think it differs from the Osiris
#373

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From: Pasadena, Tx
gdaddy,
How do you like the A60 7S V2 motor? What prop, bats and ESC are you running? I have a new A60 7S in my Pentathlon but need new bats to really tell what the motor will do.
Thanks,
maustin
How do you like the A60 7S V2 motor? What prop, bats and ESC are you running? I have a new A60 7S in my Pentathlon but need new bats to really tell what the motor will do.
Thanks,
maustin
#374
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WOW, your Lightning Dynamic looks fantastic! It is the first one I have seen, other than my own, and you made it look great. What a satisfying feeling to break ground with an airplane you have spent 6 to 9 months of your time on.
Good luck in your first contest back. I have had to take a few extended breaks from competition and everytime I realize I have missed it more than I thought.
Congratulations!
Jeff
Good luck in your first contest back. I have had to take a few extended breaks from competition and everytime I realize I have missed it more than I thought.
Congratulations!
Jeff




I bet it shows up in the air good...