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Hey, there are no idiots here. The throttle-mounted PTT has to do with a person's previous experiences, and the "hard-wiring" that results in pilots' brains. I think you'll find that most of the people who install PTT buttons on their throttles do so because we flew for years in military fighters and trainers, where your left hand was on the throttle, and the left thumb always operated the PTT, speedbrake and other functions. It just gets into your bloodstream, and it seems easier to design the homebuilt airplane to match the neural wiring than the other way around. I flew a jet with a big-a** cannon in the nose, and my brain is permanently hard-wired to use my right index finger to shoot stuff, so a push-to-talk trigger on the stick is unthinkable to me, and probably a lot of ex-military guys. The other big reason is that in close formation, having a PTT on the throttle would prevent the pilot from inadvertently "pulsing" the stick slightly when transmitting. (Probably a small factor, but still true.) So that's the overly-simplified answer as to why some people do weird things with their PTT buttons. Whatever works for you is great! |
Aint no such thing..
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Honestly, it's all personal preference. I don't find that pushing my PTT (on the stick) is any issue for controlling the airplane. It just gives me the willies to pull that trigger unless I want something to blow up. PTTs on throttles definitely has a more military feel & is way less common in general aviation airplanes...thus making you cooler. :D Most current military fighters have a PTT that's actuated by the left thumb. Usually it operates at least 2 radios (2+ way rocker switch...one way = radio 1, the other way = radio 2). Some airplanes have the PTT on the left index finger. No fighters have a PTT on the trigger. Not that we have to emulate fighters, but I like to think of our RVs as fairly fighter like. At least compared to a spam can. :cool: |
PTT on Throttle
the Pitts I used to "borrow" had PPT on throttle... Your left hand is pretty stable, and the right hand gets busy (or lets go on occassion!)...
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Interesting thoughts. I'm not ex-military so don't have the "hard wired" synapses (yet). But I have flown a friends Glasair that had the PTT in the trigger; and it just felt wrong to me. I have no rational or scientific explanation. I am used to the PTT on the top of the stick; I currently fly a Super Decathlon. I'd like to hear more on this; I'm reaching the tail-end of implementing all of the cockpit ergonomics and if there's a better idea out there I would like to hear it. We have a local RV formation group (Blackjacks) and I have seen a lot of them putting the flap switch in the throttle.
Which brings up a follow-on question; what functions / switches do belong in the stick ?? I have the Infinity stick grip with all its switches (bells & whistles). I have no plans to use all of the switches and intend to blank out the trigger. The only 2 functions I can think of that would work for me are 1) PTT and 2) autopilot disengage. Note: I am installing manual flaps - personal preference here hard-wired from sailplanes. So first question is what other functions have people found udeful in the stick/throttle ?? Second question is what switch placements in the stick/throttle ?? |
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http://www.thedukes.org/rv/share/901...witchology.ppt I do not have a throttle worthy of holding butons, so I had to put everything on my stick grips (trigger switch PTT - ARRGHH!). I personally don't like flaps on the stick, but that's just me. I sat down & thought through all the things I do during a flight. The things that I did the most, I put on the stick. |
I didn't put my com on the throttle but like many others I can't stand to have the flaps on the stick. I also ran out of buttons on the stick so I put my flaps and rudder trim on the throttle.
The body of the hat switch from Aircraft spruce fits inside the throttle handle with 1/16" to spare and the flange butss nicely on the end. I just drilled a hole in the handle for the wiring, left the mounting bolt in place and slid the switch into place after filling the handle with a soupy flox mixture. The excess oozed out the drilled hole and now the bolt head is set solid as is the switch. I twwizzled the wire bundle and left a 6" loop for throttle movement. My fat hands were too big to operate the levers as they came so had to extend the throttle and prop levers to make em fit. Seems to work well for me. ![]() ![]() ![]() ![]() ![]() |
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