RC Quick Tips - What is Expo (Exponential)?
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- เผยแพร่เมื่อ 18 ม.ค. 2015
- In this Remote Control (R/C) quick tip I cover what Expo (or exponential) does on your radio.
Often, then new to the hobby and reading the manual for a new transmitter a lot of things are taken for granted. This video is one in a small series that explains the basics.
Thanks for watching, please LIKE and SUBSCRIBE!
Happy flying!
Expo has been one of those things that I've had trouble understanding just what it is . Thanks for explaining it in simple terms. I've been flying with SAFE for a long time now which I've been told in videos creates bad habits but now that you've explained it, I'm gonna put expo in my NX6 and hopefully it will help me fly better.
Learning why its called Expo makes it all more sensible to me now. Very helpful, thanks!
One of the simplest yet clear explanations
it's a 4 years old video but it helped me a lot, thanks for sharing your knowledge!
Great concise explanation.
Thank you
Thank you for your report, much appreciated!
Many thanks for your brief explanation. Now, darkness becomes light with your help! :)
Excellent video! I was like seeing it all over the manuals but had no idea what exactly Expo is! Keep up the good work and thanks for these videos.
Great explanation! I think I'll be sharing this video whenever someone asks me about expo. Nicely explained especially for the new folks to RC. Cheers!
Excellent excellent! Fantastic stuff . Thanks for sharing !
Excellent presentation and my 2nd of the evening on expo.
Made changes to my DX6 and am now flying my Nano QX 3D much more easily.
New folks to RC need all the assistance possible. Quite a daunting amount of information to learn and I was getting very frustrated!
It really underlines that RTF may not always be the best way to go with their limited transmitters.
Very good explanation! Good use of means to demonstrate what you are talking about! Congratulations!!!
Thanks for the info, it helps to know what it does for a beginner!
Thank you Lee!
once again you gave exact info and understanding. Thank you brother!
it is awesome to have someone like you sharing knowledge :)
You really do have an appropriate channel name!
Like the dual rates video even with the age of the video. Thank you very helpful
Wow, why can’t other you tubers explain this like you did wow thank you so much
Agean Thank You for braking it down it that way.. It is very helpful..
5 year old video but still amazing info for new people like me. Thanks!
dude your awesome! I love your videos and how much effort and detail you put into your videos. The animation really helps and looks amazing! Please keep up the great work!
+Juan Baca thank you! Happy flying!
Great stuff! Got my taranis set to a serious sweet spot for my X8. Once again thanks to Brain across the Pond.
Expo is subjective in piloting a craft, but it is essential when considering gimbal control for cameras. For example- the TBS discovery offers the 2 axis gimbal and if you add some expo to the pitch control, then your video is superior since you can start the tilt slow, and increase the speed to smooth out the shot. I would never eliminate the expo from my variable switch that controls gimbal movement.
I use expo in the FC for all flight control.
Excellent video and explanation.
Great video, i never really fully understood this until now :)
Good explanation. Been fiddling around with this on my rc lawn mower. Bumped the motors to 24v and the rt lever was spastic just touching it at 12v now with 24v every time I tried to stear or go forward it would have sezers(sic) and rooster tail across my lawn. Now more manageable. I also set up flight mode so I have normal and sport(warp) drive for really big yards😃.
Thanks for posting this.
Thankyou this video was very helpful.
Thx for the tip bro!
5 years old and now I know what it does I had it all wrong... thanks!
thanks for the vid. my E Revo wheelies while taking off when racing, this should help.
thank you so much made things a lot plainer, and would explain my many crashed models!
:D
Thank you!Now I get it.
Thanks, that helps a lot!
good one thanks!
Many of the people who criticize exponential are those who don't know How to set it up in the radios, that being said, Consider using the same exponential values For each Dual rate position of a control surface. In that way the control that surface will feel the same The only difference will be you will get more throw...
Thank you!
Good vidoe
It might have been better if the up/down stick movement in the graphics was shown on the Y axis of the graph instead of the X axis. It confused me at first.
If you had used a servo with a long pointer attached to show the output when the stick was moved on a real transmitter it may have reinforced the message a little more, but on the whole a good explanation.
One thing that the video did was to remind me to add expo to the new model that I set up on my transmitter at the weekend. Lack of expo, too much control surface movement and a tail heavy model made the test flight "interesting".
As a side note, one of the original reasons for introducing expo to RC systems was to compensate for the non linear output of rotary servos, because without it movement of pushrods around the mid point is actually exaggerated.
Thanks Bob, happy flying!
Thank you.
Great explanation ...as a beginner to RC helis, I find your videos very helpful..can you make a video about reading and understanding the parameter settings from a heli manual and then entering them into the Tx....I have a Blade 230 S heli and newer DX6 Tx....I can navigate the TX settings faily well, but the manual is written with a lot of short cut symbols...it may as well be a foreign language... ..thanks
I've had a quick look at the manual and the setup page for the radios is designed so you can 'plug' those settings into the relevant part of the menu on your radio. It's setting up three flight modes, the first is normal and the other two are for 'idle up' with a panic button too. Not sure exactly what you're not sure about. If you need more let me know.
Feel free to answer any or all of the below questions…as any help would be greatly appreciated.
I set Throttle Cut to the 2 position switch "H"...
I set Gear to the 3 position switch "B"
I also set Flight mode to the 3 position switch "B"
I set Aux 1 to switch "I" and reversed it.
Question 1:
I put flight mode on my 3 position switch "B"( per the book) ..I also put my D/R and Expos of aileron and elevator combined on 3 position switch "G " ( this is not in the book , but I can’t really understand where to put them.) I left rudder D/R and expo alone.
I my 3 position set switch " G' to the following parameters:
switch position 0 @ 70% -30 %, ( hoping this will make a very tame flight )
switch position 1 @ 100% -30%, ( hoping this will make it a little more aggressive flight )
switch position 2 @100% - 0 % ( hoping this will be used for a the most aggressive flight )
Question 1a: Is there going to be a conflict between switches B and G, depending on their positions?
Question 1b: Does beginner mode, on switch "B" , position 0....do basically the same thing as my programmed D/R and Expo rates on switch "G" in position 0 or are these two completely separate?....
Question 1c: Should I be setting up the D/R and Expo’s differently?
Question 1d: What happens if I remove all D/R and Expo’s completely?
Question 2:
I set Aux 1 to button "I"...my understanding is this is the SAFE mode....will SAFE mode work no matter what position the other switches " B" and "G" are in?
Question 3:
What exactly does GEAR mean for heli programming? The book states to program GEAR to switch "B".
Question 4:
What exactly does the word "Inhibit " mean for heli programming?
#Helpful !
How does cleanflight throttle default expo of 65 relate to the transmitter expo?
I can see a difference in trans settings but CF doesn't seem to do anything at 65.
Vic Prk Very similar, setting on the flight controller can be slightly better in terms of granularity.
Happy flying!
Hi, im not sure if you can help me but im trying to get my head round something.
Is there anyway to slow a servo down when used on a channel 3 button? So like when i click the ch3 button the servo moved at a certain speed, is there any way to slow that speed down that i can adjust on my transmitter?
Many thanks
Gaz
+Gaz Man Depends on the radio. Cleaver ones like the Taranis let you move the channel value (and hence the servo) at any speed you want. You can also use a device that changes the value slowly that you install between the Rx and servo on the model..
+Painless360 Ahh i see, thanks for your quick reply. Ill check out this device that slows it down. The reason why i need it is becuause ive made a rc car flamer device that makes exhaust pop flames. It uses a lighter and a servo to press the button but it presses the lighter too quickly and doesnt give it chance to fill the exhaust up with gas before igniting it....if this makes sence lol.
Check my video out if you get chance.
Thanks for the advice matey.
www.hobbyking.co.uk/hobbyking/store/__8863__Turnigy_3_Channel_Servo_Speed_Direction_Regulator.html ;)
At 0:40 you mention having a heli WITHOUT a FBL control unit..........does this mean that WITH a FBL control unit I would use little to no Exp? Thank you for your videos! :)
Depends if the FBL unit allows you to set it up there.. Happy flying
Is it possible to control exponential or end points for surfaces on a non computer Transmitter at the transmitter rather than by moving the control horn linkage? Thanks
Mike Breler no
How is exponential different than just setting up a curve. I assume that if you use a curve instead of expo you get the same thing but have more control over the curve?
+Don Pillow The expo is a curve that flattens out around the middle of the control. If you have a radio that allows you to create custom curves that look the same then you could use those..
+Painless360 Thanks-building a custom large octo and learning the pixhawk-taranis plus and your videos are a big help.
diydrones.com/forum/topics/new-heavy-lift-design?commentId=705844%3AComment%3A2131819
I've been struggling with banked turns on my omp m2. Dialed the expo down and something clicked
If we have setup rates and expo in betaflight, do we leave the rate and expo in the tx alone? 100rate and 0expo
That is one way to do it. Having expo in more than one place and complicate matters and make the controls feel very spongy..
@@Painless360 wow thanks for the quick reply. Really appreciate it. Now it clears me alot. Thanks again..
So how do you make the adjustment?
Depends on the radio. See the manual for the one you have.. Happy flying
I haven't seen a DX7 in years. lol
Me too! :D
@@Painless360 They were decent mid level transmitters though. I still have DX6i that i use for my sims because I can do the programming inside the radio like I would have to do it for my real models and it responds pretty much like it would in real life. The last version of Pheonix was excellent and I still like it better than realflight because I can get my heli's moving almost as fast as they would in realtime where Even Realflight Evolution just seems like the models are slow compared to what it is really like to fly them; namely my SAB Goblin 700 and Align T-Rex 800 just don't seem as 'twitchy' as they are in reality with RF whereas in Phoenix they respond every bit as fast. I really see very little difference in graphics between the two except in the models. Random blabbing concluded. . .
I've still got mine here. It was my 'first' proper radio and I learned so much from it. All of my early helicopter, plane and quad flying was with this radio..
Thanks, I understand now after crashing 3000 dollars worth of aircraft including my most loved FMS yak 130 !!!
Sam Dish learn to fly not difficult is it ?
Some aircraft are so responsive it is virtually impossible to fly with out some expo.
Ralph Latham only if you’re a total twat . Just reduce the control throw !
@@tonywright8294 Eho, but a total #### would say such a thing. (nfc)