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Author Topic: What's your max. power on an Eva?  (Read 802 times)

DerKrawallkeks

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What's your max. power on an Eva?
« on: July 16, 2024, 03:02:39 AM »

Hey guys,

I have a 2021 Eva Ribelle (big battery, no RS version, no EMCE motor).
From what I understood, I thought this bike should have a max. (continuous..) power of 107 kW.
I do see 107 kW in the display most of the time, but if it is charged above ~50 % SOC in warm weather, I am seeing more power than that.
Above 85 % SOC, I am seeing up to 125 kW.

Is this normal for the non RS version? Can any of you guys comment what your displayed max power is?

Thanks!
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PWM

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Re: What's your max. power on an Eva?
« Reply #1 on: July 16, 2024, 06:01:32 AM »

This sounds correct...the drive is limited to 400Amps max on the Ribelle w/ Rinehart controller which is what you have.

107,000 Watts / 400Amps = 267.5V (pack voltage)
125,000 Watts / 400Amps = 312.5V (pack voltage)

The voltage discharge curve that results from high SOC to low SOC looks correct (per results above) for NCM chemistry.
« Last Edit: July 16, 2024, 09:05:03 AM by PWM »
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BMW eK75 Conversion (Retired)
Energica EVA Ribelle (Black Frame Matters)

DerKrawallkeks

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Re: What's your max. power on an Eva?
« Reply #2 on: July 16, 2024, 01:26:44 PM »

Hey PWM,

thanks for the input, that's interesting!
Yes, I got the Cascadia Motion (Rinehart) inverter.

I was comparing some specs to the RS (the old RS, but it's still similar), and all the marketing around the RS version is very shady.
"perfected ECU programming". I noticed that the RS runs a 15 tooth front sprocket instead of a 16 tooth, I am suspecting that this is the main difference, cause this should make a big difference.

Did anyone ever put a 15 tooth sprocket on their non-RS bike?
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Stonewolf

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Re: What's your max. power on an Eva?
« Reply #3 on: July 16, 2024, 04:59:54 PM »

The EMCE motor peaks up to 125 but has a lower continuous power.
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BorS

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Re: What's your max. power on an Eva?
« Reply #4 on: July 17, 2024, 01:33:00 AM »


I was comparing some specs to the RS (the old RS, but it's still similar), and all the marketing around the RS version is very shady.



Did anyone ever put a 15 tooth sprocket on their non-RS bike?
For me it is not shady, but clear like you say, a front sprocket, stickers and software.  And the software manly  to get the speedometer is adjusted to the other sprocket.

An 15 tooth sprocket one a non RS bike, will work, only the speedo will not read correctly.   Or less correctly than it already is.
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Specter

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Re: What's your max. power on an Eva?
« Reply #5 on: July 18, 2024, 11:06:29 PM »

That changes the Torque a bit, but overall at the top end, you'll need X amount of horsepower to go YY miles per hour with zz wind drag.  when you look at the drag numbers up around 180 - 190  MPH the sprocket changes don't mean a hell of a lot of much anymore.  You may start faster but essentially end up at the same end point.  Sooner or later you run out of HP to accelerate anymore no matter what your sprocket ratio is.   Just my theory, as I'd never speed on the interstate.  8)    Oh!  that was I 165 ?  my bad, I thought that was the speed limit.

Aaron
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DerKrawallkeks

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Re: What's your max. power on an Eva?
« Reply #6 on: July 20, 2024, 01:59:12 AM »

There is no real top end, as the ribelle maxes out at 125 mp/h (200 km/h), sitting at only 60-70 kW.
Even the Ego maxes out at 150 mp/h (240 km/h).

So I did not quite get what you were trying to say here.
The crossover point where torque starts dropping off and the constant power region begins is about 60 mp/h (100 km/h). The bike is not power limited until that point, so I believe that a smaller front sprocket should make a significant impact on acceleration. I think the RS is not much more than that.
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Specter

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Re: What's your max. power on an Eva?
« Reply #7 on: July 20, 2024, 10:41:05 PM »

On a racing bike there is no top cap,  it'll go until you run out of HP to make it go or max out your rpm's if you are really playing with stuff.  I don't believe I have ever hit any sort of 'rev limit' on my bike so can't tell you what that value might be.  I think i seen 12k motor RPM at one point somewhere though but don't quote me on that.

changing your sprockets, yes it is going to change your torque, and change your acceleration.  You don't want to get too wild where you are lifting the bike up every time you turn the throttle, or do you?

On the Ribelle, you are sitting up .vs. prone on the EGO, in a race position,  so your center of gravity is higher, your body weight is not holding the front end down to the road as much as it does on the EGO.  Do you want to turn your bike into a wheelie machine or keep it something a bit more controllable?

As for the speedo inaccuracy I believe they fixed that in rev 43, however on that, yes, anytime you do change sprocket arrangements you will change the accuracy of the speedo since a non race bike does not have a way to put in your sprocket tooth count that I am aware of, to alter the math on it.  This should be easy for you to figure out though just doing the basic math on it though.

Aaron
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