HOW Throttle Exponential improved my RC Racing INSTANTLY

HOW Throttle Exponential improved my RC Racing INSTANTLY

BUT!!! F🤬🤬🤬Firstly somebody explain why, if i am using my phone camera in selfie mode (the camera on the front ) why is the writing reversed ??????? watch the video you'll see
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In this video i explain What, Throttle Exponential is and How it can affect your RC car and how i changed my settings and instantly saw results managing to place 3rd , 4th and then " 1ST " in my respective finals at the recent #Rugmaster Race .......

A big Thanks for the explanation from a #Mardave works driver Johnathan..

the aim of this video is to try to pass on that knowledge ( in VERY SIMPLE ) terms to hopefully help any one else who is struggling but just can't see why ...

Stuff i use or Recommend..

[benmaxson]

i had a futaba radio that showed this on the display. 4pk or someting like that. very early in my rc career. it was very helpful and you are spot on with your discription.

[cndhobbies]

i would argue that what you had set up at first is closer to what you want to have. 75% positive expo feels pretty good and IMO a good starting point. reason for this: when you are going around a corner, you arent stopped, you are rolling at some speed, atlest 30% in the slowest of 180 corners. if you set your radio to be linear, your first 30% of throttle will provide no imput in speed (if the car is already going 30% of its speed and you give it 30% throttle, its not gaining anything it will stay that same speed) also because of weight, drag, loading etc, even if you give 30% throttle you dont get 30% power right off the bat, the esc, motor, battery have to overcome all that. so if you were at a dead stop and went up to 30% throttle, its not instantly at 30% wheel speed.

so getting to the point. by having a positive expo that is fairly aggressive like 75% or higher you end up with greater throttle control. if you do not have any speed delay on the channel (where it delays the input - you pull full throttle instantly, but using speed delay on the throttle channel causing a linear ramp up from 0-100% in a delayed time of say .3 seconds making it ramp in to 100% in .3s time) when you pull full throttle, your telling the esc to give full throttle. so even if you have no expo, negative expo or positive, when you pull 100%, the esc is gonna give 100% this does not change. by having a positive expo does this for you, you start to pull the trigger and because of the aggressive ramp in this is whats happening (values arent correct, its a general idea of whats happening):

5% throttle on controller: sending around 20% to the esc
8% throttle on controller: sending around 28% to the esc
10% throttle on controller: sending around 32% to the esc (at this point we are around the slowest speed you be going around a corner)
12% throttle on controller: sending around 35% to the esc
14% throttle on controller: sending around 37% to the esc
16% throttle on controller: sending around 39% to the esc
17% throttle on controller: sending around 40% to the esc (getting around more common speeds for slower corners)

this isnt exactly a correct values but im getting a point across here. at 17% throttle input you are at 40% of the esc power, this is about the lowest you back off to on a track when racing, other then this you are off throttle. i now have 83% of my throttle travel to control the remaining 60% of my esc. if this was linear i would be at 40% of my throttle throw rather then 17% i now have a wider range of throttle throw to control the power to the wheels. also as pointed out in the video graph, the further the throttle is to 100% the more it is reduced. its flattening out. this means your higher end of your throttle is now going to be smoother, if going to be easier for you to control higher speed throttle like in a series of fast corners or how you need to back off alittle throttle for a corner.

similar to how using negative steering expo will give you more finer input for corrections on the straight, having positive expo for throttle will make you have more control of the input to the esc

[notsam_flagdirt]

Something about this Northern accent makes me take in all the information with such efficiency

[steven-vnui]

Nicely explained, I have my 3pv on -20% which works well for our track and my level of experience

[fpvburg]

'You get the DRIFT of what i'm saying' hahaha .. i love this vid, very well explained. Thnx for sharing !

[ccurrivan]

The values may differ between radios. On the Noble NB4 zero is linear, and negative expo softens the initial acceleration. You can also add delay to the throttle in the radio similar to the ESC's punch setting.

[Luke-entk]

Zero throttle and steering expo would normally be the default on most radios which would normally be a curve like you showed. The steering expo is even more important than the throttle expo. It's a curve so ideally you don't want to run too much of either, as a stick radio person who races mod TC I run about -45-50% st expo and maybe -10% throttle expo, with a wheel you tend to not need as much negative steering expo. I also turn the steering speed down a little via the radio which some radios have

[leelivingston]

Just starting out in the RC world - video was great!

[lanell-qt]

That was informative, I have the FlyskyGT3B, I believe it has expo so I'll test my Ftx Zorro on this tiny asphalt bike track with 50% expo to see if it handles better. Thanks again

[Aro]

Hello from Australia. Thanks for sharing. Nit long into racing as well. Will give the EXP a try?

[chrishammont]

IV had same problems blame everything nearly except failure and give up just tried exp 50 per racing tomorrow let you know also set steering at 50 so I don't jab on to quick out of corners (in theory) but you do make sense thank you Chris h

[DixieRC]

Hey man great an informative video so I can understand thanks

[trevschannel]

a new tip for me being a newbie much to learn

[MX-CO]

Can you adjust these settings on a traxxas tqi, transmitter?

[dgmenace]

Very important info! Definitely helps me!

[laurensvandervleuten]

For throttle it depends on track conditions. For on-road I guess the value 50 and above work well, because of more instant power on high grip/traction surface.
However for offroad on a surface that is wet or has low grip, you do not want full power instant on the wheels. Because that makes the wheels spin, but not move your car forward. So with negative exp on throttle the traction build up is better out of the corner and the car is more drivable. Same experience like when driving a regular car on snow or ice.

[simonsmith]

The 3PV is just like all Futaba Radios, plus (+) Expo is like your first curve and minus (-) Expo is like your second curve. Zero (0) Expo is a straight line.

[onlineaccount]

Always use linear and adjust on the finger, i suspect when someone said about speed they meant epa not exp and epa is the 100% to give you max power.

[ianogara]

Great video that Bren, well described

[MarcosMartinelli]

I am quite sure that linear acelleration, and also linear steering, without any expo, 1 to 1 ratio, are the standard setting on all transmitters.