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Power of the wheel when speed is limited in the app


Rino
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I have an Inmotion V5F, and live in Norway where EUC is legal but with a speed limit of 20km/h (I drive around 20-25). Myself including gear is about 85kg. I've noticed that driving uphill makes it use lots of battery & increases the temperature (usually it's the temperature which gives up first; around 78 C). I particularly like the high pedals on the V5F - I've tried a couple other wheels with lower pedals. I would like to have a wheel which can do 1) hills better, 2) better battery/distance, 3) better instant-power. 

I can see many other wheels which would probably fit my desire, but question is... If I limit the speed in the app to 25km/h, will that also limit the power of the wheel? Will it then basically behave like my current wheel? i.e. if I get a wheel which has 1200, 2000, or more engine power - is this limited if I decrease the speed down to 25km/h in the app?

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8 minutes ago, Rino said:

I can see many other wheels which would probably fit my desire, but question is... If I limit the speed in the app to 25km/h, will that also limit the power of the wheel? Will it then basically behave like my current wheel? i.e. if I get a wheel which has 1200, 2000, or more engine power - is this limited if I decrease the speed down to 25km/h in the app?

Absolutely not! These two things are not related to each other in any way whatsoever. Speed is not limited by reducing the power, if it was when you reached that speed you would faceplant (a damn certain way of telling you you are going too fast ?).

All a speed limiter does on an EUC Is instigate tiltback and/or beeping when you reach that speed. A powerful wheel capable of high speed will be both safer and run somewhat cooler (especially on hills) if it’s speed is limited. 

Acceleration will also not be limited by a speed limiter, anymore than (say) limiting a Ferrari to 120km/h would increase its 0-100km/h time. High acceleration will also consume more power and generate more heat so, as well as limiting top speed being conservative with acceleration will also help.

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21 minutes ago, Rino said:

I have an Inmotion V5F, and live in Norway where EUC is legal but with a speed limit of 20km/h (I drive around 20-25). Myself including gear is about 85kg. I've noticed that driving uphill makes it use lots of battery & increases the temperature (usually it's the temperature which gives up first; around 78 C)

That's normal - going uphill needs much energy. That has to be supplied by the battery. The high currents necessary for this heat up the electronics...

Reducing the weight reduces the needed energy proportionaly and reduces power dissipation/temperature (wires/connectors/mosfets) overproportional :D ( dissipated power is proportional to the square of the current, current is proportional to the torque which is proportional to the wheels output power)

Like driving up a hill with a bycicle is very exhausting and drives up ones temperature...

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. I particularly like the high pedals on the V5F - I've tried a couple other wheels with lower pedals. I would like to have a wheel which can do 1) hills better,

Take a look at @Marty Backe reports and videos - he does a lot of hill riding and has a lot of wheels...

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2) better battery/distance,

imo that's more or less a "constant" depending on your driving style, weight and incline. There where some discussions about some wheels "eating up more battery" but imo these were just from a bad/not so good batch?

What's written quite often here is that driving in a medium mode safes battery compared to hard mode!

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.. but question is... If I limit the speed in the app to 25km/h, will that also limit the power of the wheel?

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Will it then basically behave like my current wheel? i.e. if I get a wheel which has 1200, 2000, or more engine power - is this limited if I decrease the speed down to 25km/h in the app?

No. It will just start tilt-back at 25 km/h. If you manage to stay with your toe tips on the upper edge of the tilted pedals you can still go any speed you want...

So there is no speed limit one can set! One just chooses when the wheel starts to tilt the pedal back and makes higher speeds quite impossible/very unpleasent to reach.

One just has to be carefull with accelerations on powerful wheels with a tilt-back set to 25 km/h. The firmware implementation of the tiltback is very straight forward (dumb), so the harder one accelerates into the tiltback, the harder it kicks in (tilt back of death :ph34r:) catapulting one from the wheel...

Edited by Chriull
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Don't worry. Technically, the speed limit on every self-balancing vehicle is only a suggestion. The wheel will beep and tilt back, but you could ignore the beeps and keep going (in theory, in practice the tilted pedals will make you stop) and there's nothing more the wheel can do than accelerate until it can't.

I'd say disable the tiltback entirely and just dont go too fast if you want to limit your speed. Effectively the same.

Edited by meepmeepmayer
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