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Nother 27% CA 300L Build

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Old 10-21-2007, 05:01 PM
  #376  
tom.laird
 
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Default RE: Nother 27% CA 300L Build

Getting there, but a couple of problems. I forgot to allow for the extended servo arms when cutting the servo bays. As a result the linkages are a bit off line. I know the pivot point should be over the hinge line, but I'll just have to take my chances.

I had painted the cowl before realising I hadn't fitted the silencer, so I'll need to re-spray the red section to cover all the chipped paintwork resulting from cutting the silencer hole.

All I have to do now is the closed loop for the rudder. (I hate doing closed loops!!)



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Old 10-21-2007, 05:02 PM
  #377  
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Default RE: Nother 27% CA 300L Build

I changed to having a ball joint on one end:
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Old 10-21-2007, 09:52 PM
  #378  
Steve
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Default RE: Nother 27% CA 300L Build

That looks like a tough angle. Can you turn the servos 180* and keep the arms the same direction to get a better result?
Old 10-21-2007, 09:53 PM
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Default RE: Nother 27% CA 300L Build

Dubro also makes longer horns that you can use to bring the pivot point over the hinge line.
Old 10-22-2007, 03:54 AM
  #380  
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Default RE: Nother 27% CA 300L Build

Hi Steve,
Good thinking. I should be able to turn them through 180*
I'll check out the Dubro arms as well.

thanks

Tom
Old 10-22-2007, 03:33 PM
  #381  
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Default RE: Nother 27% CA 300L Build

Hi,
I've turned the servos through 180* and it looks a lot better. The only downside was the ball joint fouling the servo body and arm so I've had to go back to clevices at both ends. There is not a lot of vertical twist so I am confident it will not spring off. Plenty of thread-lock should hold everything in place and stop any movement on the threaded rod.
cheers
Tom
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Old 10-22-2007, 04:02 PM
  #382  
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Default RE: Nother 27% CA 300L Build

You will want a little movement on that aileron horn. That will help keep the binding down.
Old 10-22-2007, 04:40 PM
  #383  
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Default RE: Nother 27% CA 300L Build

Hi Steve,
I think I'll try the ball joint again, but put a spacer between the ball and the servo arm. That might stop the ball joint moulding hitting the servo arm.
br
Tom
Old 10-22-2007, 10:08 PM
  #384  
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Default RE: Nother 27% CA 300L Build

Sounds like a good deal.
Old 01-09-2008, 02:49 PM
  #385  
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Default RE: Nother 27% CA 300L Build

Hi,

Well that's it complete. The model has been balanced and no weight was required either in the fuselage or on the wings. I'm now waiting on a decent day to do the engine tests and then the fight test but I expect that will be a couple of weeks away.

The full build thread including warnings about the bits I got wrong is here:
http://www.tomlaird.com/articles/extra330l/index.htm

best regards

Tom
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Old 01-09-2008, 02:58 PM
  #386  
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Default RE: Nother 27% CA 300L Build

Looks great! What's the AUW?

somegeek
Old 01-09-2008, 03:02 PM
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Default RE: Nother 27% CA 300L Build

Good question - I havn't weighed it yet. I'll dig out the bathroom scales and check it at the weekend.
cheers
Tom
Old 01-09-2008, 04:54 PM
  #388  
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Default RE: Nother 27% CA 300L Build

Looks great Tom. You are realy going to like the way it flys. Knife edge on mine needs no coupling at all. And this gen 2 kit is supposed to be even lighter than mine. [sm=thumbup.gif]
Old 01-09-2008, 05:09 PM
  #389  
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Default RE: Nother 27% CA 300L Build

Hi Steve,

I'm really looking forward to the flight. It's very cold, wet & generally horrible here in Scotland just now but we do get the occasional good day even in the winter.

3D in Scotland:
http://www.tomlaird.com/3d/

Thanks for all your help & advice by the way. It's really appreciated.

cheers

Tom
Old 01-09-2008, 10:48 PM
  #390  
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Default RE: Nother 27% CA 300L Build

We have lots of snow and wind right now also. I've always wanted to visit Scotland. Maybe some day it will happen.

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