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Twin-stick Tx

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Mzee24/05/2007 20:01:00
100 forum posts
163 photos
Anyone had experience fabricating a twin stick TX? That Robbe set is just far too expensive for a pensioner (! ;-)) My latest model tug (C.F. Kayser) has a small rudder and so it is imperative that I have full proportional control over the twin motors. I've considered making a twin-stick set-up by modifying my old Futaba Tx but would appreciate any suggestions from someone who has tried this before. I have the mechanical ability but my electronics ken went out with crystal sets!!!!
Mzee25/05/2007 05:47:00
100 forum posts
163 photos
Thanks for the suggestion Glynn. I've considered this option but would prefer the twin sticks to be a one had job if I can. Another suggestion sent to me was to rotate a stick unit through 45 degrees so as to give left / right, and straight up / down feeds both servos.
Graham Haden16/06/2007 11:36:00
8 forum posts
Robin, You can buy mixing units for boats that will do exactly what you want, inputs are steering and speed, outputs are steering and up to three motors.
As you steer to port, the port motor slows down and the starboard motor speeds up, rudder works as normal.
These units are available in the UK.
stewart somerton27/07/2007 15:08:00
6 forum posts
I'm intersted in glynn's tank stearing idea to solve problem of my own. but how does receiver switch motor on and off (whithout melting)? please exuse my probable ignorance stewart
Graham Haden27/07/2007 18:38:00
8 forum posts
Each motor requires an ESC, The throttle & steering from the RX go in to the unit, the outputs are to your steering servo and 2 or 3 speed controllers "ESC"
Check this out
Mzee29/07/2007 06:28:00
100 forum posts
163 photos
Many thanks Graham - I appreciate the interest. I took an in-depth look at the ACTion website and they do indeed have some marvelous stuff there. However, the reason I'm particularly stuck on a twin stick set-up is so that I can go ahead on one engine and astern on the other in order to maneuver in similar manner to the prototype (and twin screw tugs in general). While on a recent visit to the UK and the usual pilgrimage to the Westbourne Model Centre in Bournemouth I was told of a person who will convert radios (only those with electronic trim) to a twin stick configuration for 60 which I thought pretty reasonable - only trouble was I didn't have my r/c stuff with me :-( Thanks again, Robin

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