That’s interesting, I need to learn more about gear ratios. What are you using to make your graphs?
the mosf interesting part is:
8082.063923094534641801 motor rpm @ peak mechanical power
^peak mechanical power is 10746.218459832w @ 8082.063923094534641801 motor rpm
A = meters per second = XX.XXX
B = drag coefficient = 0.75
C = frontal area = 0.6m^2
D = fluid density of air = 1.225kg/m^3
E = wind drag force in watts
F = sine of 5% slope = sin(atan(5/100)) = 0.04993761694389223373491
G = acceleration of gravity = 9.80655m/s^2
H = vehicle mass in kg = 90.7184kg = 200lb / 2.20462lb/kg
I = mechanical watts required for constant speed up slope with no wind drag
J = mechanical watts required for constant speed up slope including wind drag
K = H * G * F
L = (1/2) * D * C * B
E = ((1/2) * D * C * (A^2) * B) * A
I = H * G * A * F
J = E + I
J = (((1/2) * D * C *(A^2) * B) * A) + (H * G * A * F)
J = (1/2) * D * C * B * A^3 + H * G * F * A
J = (L * A^3) + (K * A)
^this can be rearranged to:
A=(sqrt(3) * sqrt(27 * J^2 * L^4 + 4 * K^3 * L^3) + 9 * J * L^2)^(1 / 3) / (2^(1 / 3) * 3^(2 / 3) * L) - ((2 / 3)^(1 / 3) * K) / (sqrt(3) * sqrt(27 * J^2 * L^4 + 4 * K^3 * L^3) + 9 * J * L^2)^(1 / 3)
we know:
J = 10746.218459832w peak mechanical
L = 0.275625 = (1/2) * D * C * B
K = 44.42622815547907982077 = H * G * F
therefore:
A=(sqrt(3) * sqrt(27 * 10746.218459832^2 * 0.275625^4 + 4 * 44.42622815547907982077^3 * 0.275625^3) + 9 * 10746.218459832 * 0.275625^2)^(1 / 3) / (2^(1 / 3) * 3^(2 / 3) * 0.275625) - ((2 / 3)^(1 / 3) * 44.42622815547907982077) / (sqrt(3) * sqrt(27 * 10746.218459832^2 * 0.275625^4 + 4 * 44.42622815547907982077^3 * 0.275625^3) + 9 * 10746.218459832 * 0.275625^2)^(1 / 3)
A=32.32551993764664323864 meters per second
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I have one doubt. In the Focbox UI App, when I limit Max battery amps, is this limit for the whole battery or is it per VESC?
If I set the limit to 35A, would the Unity be draining in some moment 70A (2x35A) or just 35A? My BMS is 60A rated.
I’ll just leave this here as it seems relevant. I was trying to decide between 10S5P and 12S4P. I went 10S5P, I think it just edges out in most categories probably because of the two extra cells total.
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Make sure you are on the latest firmware, it was suspected for a while that is was “per VESC” and later confirmed that it was a bug. The newest firmware fixes this to be battery total.
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ITs per ESC. So on a unity, you’d limit it to the full amount, and on twin focboxes youd limit it to half the full amount.
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Ok, I have the last firmware version on my Unity, so should be total the total amount then.
thanks you both!
Im running custom build,36 freeride raign deck, supercarve 2 evolve with their 6374 motor mounts and motors,@ 190 kv their belts with 83mm wheels, 21700.samsung 40t in 12s 3p. Running trampa Vesc ,6 mk 4 speed controllers continuous 80amp and magneto wand. I want harder acceleration, so buying flipsky 7070 110 kv 100amp, 9nm torque vs ,3. 5nm I have now, I’m going to use lipo 130 C in 10s to reach my 60v limit, With that much power my motors will never reach the maximum that could be achieved by speed controllers with lipos or achieved using my Li ion setup with ,80amp motor limit, ions are my weak point, with lipos and max voltage of controllers I’m limited , I feel the lipo will give me the hard acceleration I’m after. Shred hard dudes 
You got any pics?
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I use this thing all the time to get an idea of how torquey a specific setup will feel. It’s gold
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