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Discussion Starter · #1 ·
Hi

I'm experimenting with my scalextric track and 7042 powerbase and ssdcv5.

I've played around with the throttle curve settings but to be honest i',m not sure what i'm doing so is there a way of taking a particular car and track and trying to work out the best "initial"settings? The reason I ask Is two fold that I currently have an 11m track but think I can expand to about 17m in the space. When magnet racing I want the extra control in the slow areas of the track?

I tried taking magnets out of one of my cars and it was uncontrollable in that it spun out with slightlest throttle. now I haven't yet had time to follow rules of adding weight BUT I wll presumably need to limit total throttle power as if I understand corrrectly, the mags in the cars provide approximately 200g downforce. So here there is maybe an aspect of limiting total power and changin the throttle curve?

 

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Discussion Starter · #3 ·
Hi Mrflippant

Thanks for reply. I couldn't find much explanation in the manual as you say. I will have a play around this afternoon but I think what your saying is that with magless I would move the mid point higher than the preset 25 of 63 but that value may be a good start for magnet racing?

I'm also going to try to use the controller test program to see if that gives me any insights into the current curve.

Thanks.
 

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Discussion Starter · #5 ·
Yeah I had a play around on excel at drawing graphs for varying mid points and assuming that the mid travel setting was the amount of change at 1 step either side of mid point and then did polynormal curves to fit and it seems that for me atleast, the mid point movement should be set at it's lowest setting as this will give the flattest mid part to the s curve. This means that after blipping to full for the straights, when I relax the throttle, there is a greater range that I can release it to, to cope with the corners. Then I just need to play around with each car to see where the mid point setting needs to be so that It sits the flat section of the throttle curve in the area I need it to be to be able to control small changes in spped in the corners.

NB when I say flat section of the throttle curve, I mean the area where the increase in power per trigger pull movement is drastically lowered. EG 0-25% trigger pull =say 0-30% power, 25-75% trigger pull = 30-50% power and 75-100% trigger pull =50-100% power.

Without knowing the equation actually used by ssdcv5 I'm just guessing but the theory should be about right as a starting point. IE if a fixed speed pace car needs to be set at 35% power to cope with the corners, then I want the "flat section of the curve to sit at around 35%?

Maybe I'm over simplifying it?, Unfortunately, my knees are playing up at the minute so I cant' get into loft to check it out, hence my time on excel lol.
 

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Discussion Starter · #7 ·
Thankyou for the quick response. My excel modelling is inaacurate as if I set the mid sensitivity to 3 it creates a graph going past linear so I will tweak my formula so suit what you've said.

my only other question (for the minute) is if I limit the max throttle from 63 does ssdcv5 squash the curve to fit IE so the same throttle curve applies but full trigger pull = 60% say or does it cut the curve off at 60%. Hopefully i've explained that well?

BTW, awesome software, racing against 5 other pace cars in pursuit mode is cracking!
 
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