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I have a kind of powerful dirt bike. People put “throttle cams” on them for this same reason. Usually you want small adjustments within the lower range of power
by AnthonBerg 4y ago
I have a kind of powerful dirt bike. People put “throttle cams” on them for this same reason. Usually you want small adjustments within the lower range of power. When you want the majority of power you usually want close to all of it.
Throttle cams are basically an off-center circle. At lower throttle you’re pulling a smaller circle and the throttle moves less. Then when the throttle is opened up you’re pulling a bigger circle.
- MR4D 4y agoNow I want one of those for my car!
- fy20 4y agoIf you car has an Eco or Power or Sport mode this is probably what it does. On my Toyota, Power mode makes the accelerator more sensitive and Eco mode makes it less sensitive (which is great for snow). Flooring it is the same, regardless of the mode.
- waste_monk 4y agoYou can't even rely on this, on my car the default behaviour is that the middle of the accelerator pedals range of motion is the "sweet spot", and in fact flooring it will trigger the hill climb assist and cause the automatic transmission to go down a gear.
- _yb2s 4y agoTypically there is extra resistance at the downshift position, and you already have full throttle in the current gear before engaging it.
- sideshowb 4y agoI haven't owned a car with them, but I thought those modes were to control when the gear shifts happen. Sport will optimize acceleration while eco will change up sooner to save fuel
- AnthonBerg 4y agoHaha, probably we want a hinge on the joint between the gas pedal and the curved pin thing it pushes down? And move the pedal back or forward? Or yeah, I love to be super ignorant of the classical Simple Machines and try to work out mechanics like this. I’ve actually had some success with guess-prototyping mechanical contraptions in the physics-sandbox game Besiege: https://www.spiderlinggames.com/ https://www.spiderlinggames.com/ I can also emphatically recommend just getting a Husaberg 550, 570, or 650 %D
- Arrath 4y agoThese days you muck with the pedal position to throttle mapping, no need to change the mechanism itself.
- dsfyu404ed 4y agoIf your car has electronic throttle the engineers (with tons of input from the fuel economy people) have already decided for you. If it doesn't then the linkage is already designed to be non-linear by adjusting the arc of the pedal linkage vs the throttle linkage.
- _yb2s 4y agoThese exist for most modern cars, you can buy a plug in box that remaps the throttle curve.