ORIGINAL: AircamperAce
ORIGINAL: Charlie P.
ORIGINAL: AircamperAce
Is there any tricks to slow down the speed of a HS-55? My radio is a Spectrum DX6i. I don't think I can do it with the radio.
Not familiar with Spectrum, but my Futaba has the clever option of bypassing the switches and using the joysticks that can be moved at either fast or slow speeds and in small increments if desired.
Seriously, you can either program in exponential so the response is "dulled" near the center of the throws or you can adjust the endpoints so you are moving through broader or narrower arcs in a given time. You can also effectively slow a servo by moving in on the servo arm and out on the control horn. But short of adding a resistor to the servo circuitry you cannot change the motor response time. Would that we could speed them up sometimes.
Thanks Charlie,
I should have explained myself a little more. I am using a HS-55 in a .40 sized Hangar9 Cub for the throttle. It is powered by an old Saito 65. I've been known to overreact and chop or firewall the throttle, causing the engeine to quit. I remember reading somewhere someone suggesting slowing the servo down with the radio (a function that my radio does not have) to remedey this. Some better engine tuning may help but I really need to condition myself not to be so abrupt with the throttle. Adding a resister is kind of what I had in mind when I posted. Thanks for all the good ideas, unfortunately the engine requires the full travel of this little servo, otherwise I would reposition the linkage.
The Futaba 9C has just that feature. It's a programmable throttle delay (I think the intention is for jet turbines, or to simulate jet turbines). I played with it when I had a very cranky Kangke SK-50 engine that stalled if goosed. It was the wrong way to try and correct the probem. (Better to get the engine tuned - which involved a Perry carburator with that engine).
I have found the best way is to assign two switches. I use the two over the throttle. I set my throttle lever so it is at a solid idle when lowered. There is one switch called "taxi" that is lower idle that I know the engine can hold briefly when sitting. So that becomes lowest idle when that switch is flipped, great for final approach with a speedy model. And then there is a designated "kill" switch. Flipping this one closes the carb and stops the engine. This way I never have to worry about killing the engine in a flight situation.
I like biplanes and I can program those models easily so that the throttle idle is higher, as some tend to glide like clumps of mud.
On my old 6DA I just flew with the throttle trim slider up and set the throttle so that at low lover it still idled and to kill the engine I had to thumb the trim slider down. That is the only feature I miss with the digital trims of modern transmitters.