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Northstar follow up : ARROW by Laddie Mikulasko !

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Northstar follow up : ARROW by Laddie Mikulasko !

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Old 02-06-2015, 09:44 AM
  #501  
Bob93447
 
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What did it weigh ready to fly?
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Old 02-06-2015, 10:40 AM
  #502  
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Laddie- that's really sharp looking. What did you trim/color it with?
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Old 02-06-2015, 01:15 PM
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The model was painted with one coat of water base polyurethane sealer. When dry it was sanded lightly and then using Tremclad pint I painted with the brush.


The flying weight was around 6 to 7Lbs. I do not have the plane anymore. I sold it.

Laddie.
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Old 02-28-2015, 06:49 AM
  #504  
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Sorry LADDIE.. Im about to make you blush.

Guys Im not sure if you realize who Laddie is.. He designed the original Northstar from which they're all derived!

Laddie Im only one hour from you. When I finish my latest project, Id be honored if you would fly it.

Im building a composite/CF plane for Gas Turbine use. It will also be able to fly on a 12s 3 bladed electric set up. Finished length is 7'

I'll start my own build thread soon. Im calling it the WETJET
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Old 02-28-2015, 07:36 AM
  #505  
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I like it.
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Old 02-28-2015, 07:42 AM
  #506  
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I am looking forward seeing your thread. I will gladly help you with flying your model.
Laddie.
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Old 02-04-2017, 12:15 PM
  #507  
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OK what is the consensus now about the most powerful engine that can be fitted in this airframe ?
Actually, I might be tempted by an Irvine .53 or a Webra .50. I also have a jett .50 at hand.
The OS .55 AX looks good too...
What would be the best choice for maximum speed ? I don't know if the OS would be faster than the Jett...
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Old 02-05-2017, 09:33 AM
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The Arrow should handle a lot of power. If you look at the last post in the "Northstar mods" topic, someone is turning a 10x7x3 blade prop at over 16K RPM (putting over 2000 watts into the airframe, or almost 3 HP). The Arrow should be able to handle as much power as the Northstar as long as you keep the motor pylon strong.
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Old 02-06-2017, 04:53 AM
  #509  
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If someone could advise me, does the Arrow typically balance nose- or tail-heavy? Am thinking about a servo mounted near the engine but don't want to aggravate any type of tail-heavy condition if one exists...

Thanks,

Bob
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Old 08-25-2018, 08:08 AM
  #510  
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NORTHSTAR WING ROCK

I noticed yesterday when flying my NorthStar at slow speed in a crosswind condition that I was experiencing fairly severe wing rock. Has anyone developed solutions to this problem? What are the key factors that cause the wing rock; certainly speed is one thing, but what about the influence of CG? Other factors?
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Old 08-28-2018, 02:46 AM
  #511  
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Hi Bob.When I was designing the N/S, my primary aim was to come up with the slick amphibian design. I think that I succeeded. With thousands of North Stars and its clones flying is a proof of it. The flying conditions you described are extreme. If it was the conventional high or low wing model the model would do ONE rock and it would go into the spin. The wing rocking is no problem at all. Actually, it is telling you that the model is at stalling speed. But even at this speed with the C/G in the location show on the drawing the elevator can control descend. Many times, I demonstrated controlled vertical descend while the wing is rocking.The wing rocking can be reduced slightly by increasing height of top of fin but as usual, something else will suffer. The taxing control is reduced. The model will weathervane badly. Good luck.

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