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Solid State gyros. WAS: Trutrak

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scoobytrash(at)hotmail.co
Guest

Posted: Thu Mar 30, 2006 5:13 am Post subject: Solid State gyros. WAS: Trutrak

I've been an RC modeler for years and the pizo gyros have been around for 

quite

awhile now although I have never personally used them.  I checked with tower

hobbies and they have a number of gyros from futaba (one of the oldest RC

brands around):



   http://tinyurl.com/pz432  - single axis pizo gyro, 1oz, $140

   http://tinyurl.com/l9n7o   - single axis gyro with ctlr and 

servo(47oz-in) $380



For some reason, all the dual axis pizo gyros seem to be discontinued and 

they seem

to be moving toward single axis units.  The servo included above is 

obviously too weak

for real aircraft although you can buy a monster servo with 180 oz-in of 

torque

for about $80 which is getting pretty close to usable.  Interesting 

possibilities, one

could assemble a pretty much off the shelf auto-pilot with RC parts for 

under $500.



Scooby

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smokey_bear_40220(at)yaho
Guest

Posted: Thu Mar 30, 2006 9:06 am Post subject: Solid State gyros. WAS: Trutrak

Hi Scooby, Mark Michel and everyone,



That is what I was getting at.  The parts are

relatively cheap, can drive an indicator as is, or

thru a big servo, be an autopilot, yaw dampener, or

wing leveler.  Not something I would trust IFR, but

something that could get me out of it if I bumbled in.

 No problem for night backup and maybe something to

hold the plane in turbulence while you read a map. 

Maybe something just right to add stability to those

older model Fox's with the little tails.  Easier and

lighter than a refit to a bigger tail.



Michel might be right.  TruTrack might be doing just

this????  For a price.....



So Mark, how does that sound to you?  Doable?



One of the neatest things I have seen is a Canadian

system that paints a light across the cockpit and

levels it to the horizon.  It improved IFR scan by 80%

because the whole cockpit was your periferal horizon

and you scanned the other instruments more easily. 

Now I have this lazer picture hangar that draws a

bright red line........  Just an idea.  



Kurt S.



--- scooby harrington <scoobytrash(at)hotmail.com> wrote:



 	  Quote: 	
		   I've been an RC modeler for years ........


	


......  Interesting possibilities, one

 	  Quote: 	
		   could assemble a pretty much off the shelf

 auto-pilot with RC parts for under $500.

 

 Scooby

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mscotter

Joined: 15 Jan 2006
Posts: 49
Location: Winston-Salem, NC

Posted: Thu Mar 30, 2006 12:01 pm Post subject: Solid State gyros. WAS: Trutrak

Doable?  Yeah, certainly.  If you wanted a simple singe axis wing-leveler, I would think you could take one of the big servos on the market and hook it to an aileron trim tab.  The control pulse that is typical of most rc transmitters is fairly well documented on the web, I bet you could replicate that with a small electronic circuit.  Then you'd have to play with the gain a little to get the gyro tuned to this 'system' and you should be up and running.  I doubt you even really need that great a gyro - the dynamics of our man-carrying aircraft are much slower than the smaller rc stuff.  I would NOT want to be in an aircraft that could flip and tumble as fast as my rc aircraft!

I'm kind of surprised nobody else out there has done this already.  Anyway, I think the aileron trim tab idea might also be good because if there was a problem you could still overpower it and keep control of the aircraft.

Mark Scott

Elkton, MD  USA



-------------- Original message -------------- 

From: kurt schrader <smokey_bear_40220(at)yahoo.com> 



 	  Quote: 	
		   

 

 Hi Scooby, Mark Michel and everyone, 

 

 That is what I was getting at. The parts are 

 relatively cheap, can drive an indicator as is, or 

 thru a big servo, be an autopilot, yaw dampener, or 

 wing leveler. Not something I would trust IFR, but 

 something that could get me out of it if I bumbled in. 

 No problem for night backup and maybe something to 

 hold the plane in turbulence while you read a map. 

 Maybe something just right to add stability to those 

 older model Fox's with the little tails. Easier and 

 lighter than a refit to a bigger tail. 

 

 Michel might be right. TruTrack might be doing just 

 this???? For a price..... 

 

 So Mark, how does that sound to you? Doable? 

 


	


Doable? Yeah, certainly. If you wanted a simple singe axis wing-leveler, I would think you could take one of the big servos on the market and hook it to an aileron trim tab. The control pulse that is typical of most rc transmitters is fairly well documented on the web, I bet you could replicate that with a small electronic circuit. Then you'd have to play with the gain a little to get the gyro tuned to this 'system' and you should be up and running. I doubt you even really need that greata gyro - the dynamics of our man-carrying aircraft are much slower than the smaller rc stuff. I would NOT want to be in an aircraft that could flip and tumble as fast as my rc aircraft!

I'm kind of surprised nobody else out there has done this already. Anyway, I think the aileron trim tab idea might also be good because if there was a problem you could still overpower it and keep control of the aircraft.

Mark Scott

Elkton, MD USA



-------------- Original message -------------- 

From: kurt schrader smokey_bear_40220(at)yahoo.com 



 -- Kitfox-List message posted by: kurt schrader <SMOKEY_BEAR_40220(at)YAHOO.COM>

 

 Hi Scooby, Mark Michel and everyone, 

 

 That is what I was getting at. The parts are 

 relatively cheap, can drive an indicator as is, or 

 thru a big servo, be an autopilot, yaw dampener, or 

 wing leveler. Not something I would trust IFR, but 

 something that could get me out of it if I bumbled in. 

 No problem for night backup and maybe something to 

 hold the plane in turbulence while you read a map. 

 Maybe something just right to add stability to those 

 older model Fox's with the little tails. Easier and 

 lighter than a refit to a bigger tail. 

 

 Michel might be right. TruTra

 ck might be doing just 

 this???? For a price..... 

 

 So Mark, how does that sound to you? Doable?

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_________________
Mark Scott
Winston-Salem, NC

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