Re: F1D longitudinal stability

From: <RLBailey_at_care4free.net>
Date: Mon, 12 Nov 2007 13:13:11 -0000

Tapio

Hope it works OK. Please keep us posted!

Bob

  ----- Original Message -----
  From: Tapio Linkosalo
  To: Indoor_Construction_at_yahoogroups.com
  Sent: Saturday, November 10, 2007 7:45 AM
  Subject: Re: [Indoor_Construction] F1D longitudinal stability




  On Tue, 6 Nov 2007 RLBailey_at_care4free.net wrote:

> I believe that moving the CG forward is the only cure for this problem,
> particularly if the model stalls during cruise in bad air and not just
> at getaway. I recommend 5 - 10 mm forward. A larger tail will be heavier
> and the CG will go back, negating the benefit thereof.

  On Tue, 6 Nov 2007, Bill Gowen wrote:

> I don't want to give advice about F1D's because I don't fly F1D but in
> general a short heavy motor can be accommodated by using a wire spacer
> at one or both ends of the motor to ease the strain on the motor stick.

  Bob, thanks. I think I could get away with buiding a larger stab, as the
  first one is a bit too hefty, and I could get away with lighter
  structures. But anyway, as moving the CG forward is a better way, thanks
  Bill for reminding about the spacers. That is the easiest way, as the
  motor is short and heavy anyway, just bend a spacer a few centimeters long
  to move the motor and thus CG forward. I'll try that the next time I get a
  chance to test my F1D.

  -Tapio-


   

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Received on Mon Nov 12 2007 - 06:52:33 CET