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how to Tachometer

15.1k Johnnyynf  3.1 years ago
19 downloads
Auto Credit Based on Johnnyynf's Lotus 43

This is the dash from my Lotus 43
or if make your own is too troublesome, you can always take this and put it in your work

and in case anyone wants to know how the FT works in the Tachometer, here's how
The full FT:
(clamp01(GS < 14.995) * clamp(GS * 0.466,2,7))+
(clamp01(GS > 15) * clamp01(GS < 29.995) * clamp(GS * 0.233,3.495,7))+
(clamp01(GS > 30) * clamp01(GS < 44.995) * clamp(GS * 0.155,4.667,7))+
(clamp01(GS > 45) * clamp01(GS < 59.995) * clamp(GS * 0.116,5.220,7))+
(clamp01(GS > 60) * clamp(GS* 0.083,5,7))

it's basically works on the FT of GS

(clamp01(GS > lowest speed in that gear) * clamp01(GS < highest speed in that gear) * clamp(GS*gearing, lowest rev in that gear, highest rev in that gear)

Noted: speed should match with rev by a certain ratio and here's how I do it
take the second gear for example(clamp01(GS > 15) * clamp01(GS < 29.995) * clamp(GS*0.233,3.495,7))

we know the highest speed in second gear is 30, and it correlated to 7 in the tachometer, so the gear ratio would be 0.233... .And then we can calculate where at the lowest speed how many revs it should have, which is 3.495

repeat that for how many gears you want, and you will have a simple tachometer

General Characteristics

  • Predecessor Lotus 43
  • Created On Windows
  • Wingspan 1.6ft (0.5m)
  • Length 1.3ft (0.4m)
  • Height 0.6ft (0.2m)
  • Empty Weight 110lbs (50kg)
  • Loaded Weight 110lbs (50kg)

Performance

  • Wing Loading N/A
  • Wing Area 0.0ft2 (0.0m2)
  • Drag Points 0

Parts

  • Number of Parts 52
  • Control Surfaces 0
  • Performance Cost 164
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  • Profile image
    180 Ubyk123

    taco bell fart meter

    20 days ago
  • Profile image
    4,859 Thunderhawk

    @Johnnyynf on snoflakes's ft guide I saw this code (I think for breaks), but it might be useful for torque simulation.
    web page
    It's towards the middle of the page and says linear wheel rotation

    +1 2.8 years ago
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    15.1k Johnnyynf

    @Thunderhawk
    Yes, and that's exactly what i did in my Lotus 43 (to mimic the gear ratio)
    And currently, I'm working on a funkytree AWD dynamic control and should be out in near future.
    wheel spin though, maybe there's some way to do it but I don't quite know how to do it yet.

    +1 2.8 years ago
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    4,859 Thunderhawk

    I heard that FT can be used to make wheels spin more or less. I wonder if the gearing programming used on this could be used to program tires to behave differently for different gears

    2.8 years ago
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    15.1k Johnnyynf

    @Juanfly154 same thing but in post form

    3.1 years ago