REFLECTOR:BMA Autopilot

Scott Derrick reflector@tvbf.org
Wed, 14 May 2003 16:56:10 -0600


My limited experience of doing things a "new" way is that "new" ways 
have the potential to suprise you in the darndest ways.

I agree with you that it sounds like a good idea but flight testing is 
the real judge. And many hours of flight testing the ultimate judge.

Scott

Tom Martino wrote:
> Flexible rods have been used in many aircraft for control.  They are identical to the ones used in the velocity.  The servos move it with ease.  It actuates the elevator.  Short of that ... what else do you want?
>  
> Obviously it will only be as good as the auto pilot system ... but the actual movement is the same as any flight control.  As with all control cables, the ends must be secure.  
>  
> I am not sure exactly what is "unsure" about the use of flexible cables?
> 
> 	-----Original Message----- 
> 	From: S Baker [mailto:sbakr@bellsouth.net] 
> 	Sent: Wed 5/14/2003 11:40 AM 
> 	To: reflector@tvbf.org 
> 	Cc: 
> 	Subject: Re: REFLECTOR:BMA Autopilot
> 	
> 	
> 
> 	Tim and all ...
> 	A push-pull cable may seem like a good idea, but I would reserve judgment
> 	until it has been flight tested and confirmed that everything is working
> 	"according to plan".   The rigid rod arm design, we know, works.
> 	Best regards,
> 	Scott B.
> 	
> 	
> 	
> 	----- Original Message -----
> 	From: "Tom Martino" <tmartino@troubleshooter.com>
> 	To: <reflector@tvbf.org>
> 	Sent: Wednesday, May 14, 2003 1:19 AM
> 	Subject: RE: REFLECTOR:BMA Autopilot
> 	
> 	
> 	> The pitch servo can be mounted on the top of the canard (along side the
> 	> trim actuator).  Many use a push rod that activates a coupling on the
> 	> torque tube ... but I found a better way.
> 	>
> 	> I simply ordered a three foot push-pull control cable (similar to the
> 	> ones that we use on our ailerons) ... and hooked it up.  I simply looped
> 	> it around the canard on onto the same place that the pitch control tube
> 	> mounts to ... it works great.
> 	>
> 	> The roll servo can go aft of the keel on the floor on the pilot side,
> 	> with a push rod hooking to the aileron bellcrank.
> 	>
> 	>
> 	>
> 	> -----Original Message-----
> 	> From: -LD [mailto:jldortch@prp.org]
> 	> Sent: Monday, May 12, 2003 1:24 PM
> 	> To: reflector@tvbf.org
> 	> Subject: REFLECTOR:BMA Autopilot
> 	>
> 	> Has anyone installed the Blue Mountain Avionics autopilot servos in a
> 	> standard RG? If so, where and got any pix?
> 	>
> 	> John Dortch N83AD
> 	>
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