curves for t-rex500

[cdkoho]

hi all what are the best curves for a noob on a t-rex 500 all input would great.

thanks everyone

[ckoelliker]

Well the first thing you need to do is select your head speed. If using a 6s battery I would first try the 12t pinion with more or less a straight 100% throttle curve. For normal I would put it at 0,100,100,100,100. If you are running 5s I would do the same thing, but with a 15t pinion. As for the total amount of pitch. I would try -10/+10 with zero degrees at mid stick. For my normal pitch curve I would keep zero degrees at mid stick and limit the negative pitch to -4.

[cdkoho]

100% throttle curve seems like alot for a beginner.

[ckoelliker]

With the 12t on the 6s set up it should be OK. I do not think there is any need to try to limit your head speed around center stick. The motor does not over rev. like a nitro, and I think the esc is a bit more efficient just running a straight 100% throttle.

[erniefritz]

100% throttle curve seems like alot for a beginner.

Ditto - i agree with ckoelliker
running an electric is not the same as running a nitro.... no V curves are used for nitro's , the electrics run most efficiently at 100% throttle and at zero pitch and 100% throttle , an electric will no overspeed , a nitro on the other hand at 100% throttle and zero pitch will run away and overspeed.... ,
for best results , you get the headspeed set to where you want it by changing your gear ratio (pinion) not by adjusting the throttle curve on electrics...

What happens if you run a v curve for a noob is , as you are trying to hover your up and down on the throttle/pitch stick trying to get it to stay in one place but as you are adjusting the stick the throttle - headspeed is going up and down along with the pitch of the blades which compounds your inputs and actually makes it harder to stay in one place. when the headspeed is consistant , you only adjust the pitch , this is a lot easier to keep the machine stable...

[TGibe]

What happens if you run a v curve for a noob is , as you are trying to hover your up and down on the throttle/pitch stick trying to get it to stay in one place but as you are adjusting the stick the throttle - headspeed is going up and down along with the pitch of the blades which compounds your inputs and actually makes it harder to stay in one place. when the headspeed is consistant , you only adjust the pitch , this is a lot easier to keep the machine stable...

Thanks for posting this... :noteworthy

I have always felt like when I go into idle with a V curve setup with the extremes of 80 and 100 that hovering and altitude control was much more difficult. Now that you have put it into words I understand why. :)

I think I will try keeping my norm at a TC of [0, 60, 80, 90, 100] since I am used to it but will try setting my IDLE1 to something like 85 flat and IDLE2 to 95 flat to see if it feels any better.

The other option would be to setup my Norm curve to [0, 85, 85, 85, 85] (I really like low stick in norm to be zero throttle).

I would welcome thoughts and comments on this arrangement...

Thanks,
Allen

[psindrup]

100% throttle curve seems like alot for a beginner.

I am a n00b too, and I found it quite a lot easier to fly with 12T and a 100% flat throttle curve compared to my initial setup, with approx 80% TC.

Do yourself a favor, and try to fly with a 100% TC and 12T. Nothing is gained by flying "slower"

I fly some pretty large and heavy 6s 3300mAh packs, and get around 10 minutes of hover and (attempted) figure of eights.

Peter

[Montana_Reefer]

I'm waiting on my 5245's right now and what I'm hearing in this thread makes sence, does this apply to the 450 as well? Cause I had an old timer tell me that my throttle hold was to flip when you got the head speed ya wanted and then it didn't affect the collective. And you could do this at any point in the stick! :thinking I'm sure I could make the throttle hold a constant speed, but mine is used as a throttle cut. Setting the curve like this obviously gives you the same affect of throttle hold. With that said, why not go 0,50,100,100,100 when in normal because the blades are negitive pitch until the middle any ways. Wouldn't this give a softer takeoff and landing?

[outhouse]

i fly 0-65-100 in normal 13T and its great for sport and longer flights plus easier to land. then idle up ya is 100 flat -6s 2600mah

[BenHeli]

I'm in the process of collecting parts (servos and gyro) for the 500 so this is a great thread. In any event, I flied the 450SA with a flat 85 idle1 and linear PC and she hovered much better in ilde1 than in normal PC and matching TC.