ElectricMotorcycleForum.com

Makes And Models => Zero Motorcycles Forum | 2013+ => Topic started by: JaimeC on May 01, 2016, 12:30:15 AM

Title: Zero App vs. Zero Dash
Post by: JaimeC on May 01, 2016, 12:30:15 AM
Got a RAM mount so I can keep an eye on my phone while I rode.  When the Zero app is running, I noticed a couple of disparities:  The speed displayed on the app is different from the speed on the dash; I attribute that to the app collecting its data via the phone's GPS.  However, the app was also showing a consisted 2% higher rate of charge than on the dash.  Anyone know why that should be?  If the dash is displaying 50%, and the phone is displaying 52%, should I assume the actual value is 51%?  Just curious... that 2% isn't going to make any difference in when I hit "panic mode" or not...
Title: Re: Zero App vs. Zero Dash
Post by: Erasmo on May 01, 2016, 02:10:35 AM
The speed on the phone doesn't come from the GPS but from the motor/computer. I had a bike on a paddock stand to do some testing and even with the belt disconnected it would display a speed.
Title: Re: Zero App vs. Zero Dash
Post by: JaimeC on May 01, 2016, 04:37:46 AM
Okay... then I have no explanation for why those numbers don't agree either, then.
Title: Re: Zero App vs. Zero Dash
Post by: DPsSRnSD on May 01, 2016, 11:47:18 AM
I'd understand if the phone app showed readings with a delay with respect to the bike instrument panel. But I don't know how to explain the bike showing that I use about 60 Wh/mi trip and lifetime, while the phone app shows about 90 Wh/mi.
Title: Re: Zero App vs. Zero Dash
Post by: ctrlburn on May 01, 2016, 07:49:20 PM
With speed - I know on the older "2013" dash we can set different ratios for gearing.

I doubt that value is communicated back to the bluetooth central brain because there is also a "drift" in Odometer which gets bigger (or smaller) as you "calibrate" the Speedometer hardware between the APP and the DASH.



Title: Re: Zero App vs. Zero Dash
Post by: Electric Terry on May 01, 2016, 09:01:18 PM
The app will read 5% when the dash reads 0%.  The dash will never show 1% it just skips it.

So at low SOC it's really 4% off to protect you from getting yourself stuck somewhere.  Or to leave some in reserve

each 25% the dash gets one percent closer to actual

so at 50% on the dash its really 52% and by 100% its accurate

Title: Re: Zero App vs. Zero Dash
Post by: Semper Why on May 05, 2016, 11:19:41 PM
The app will read 5% when the dash reads 0%.  The dash will never show 1% it just skips it.
Yeah, I found this out the exciting way.

Quote from: Electric Terry
So at low SOC it's really 4% off to protect you from getting yourself stuck somewhere.  Or to leave some in reserve
each 25% the dash gets one percent closer to actual
so at 50% on the dash its really 52% and by 100% its accurate
This is information that would have been really good to know about three weeks ago. Thanks for the info!
Title: Re: Zero App vs. Zero Dash
Post by: Doug S on May 05, 2016, 11:25:08 PM
The dash will never show 1% it just skips it.

Completely meaningless thing I've noticed on my bike: it NEVER shows me 81%. Every morning on my ride to work I'm in the 82-86% range at the start of a long gradual downhill, so I'm using energy slowly for a couple of miles. The SoC indicator inches down very slowly...except when it gets to 82%. Instead of showing me 81% next, it jumps right to 80%. It happens every single time, so it's clear there's just no 81% on my bike. I wonder if every Zero does it or if my bike has had an 81-ectomy.
Title: Re: Zero App vs. Zero Dash
Post by: Justin Andrews on May 06, 2016, 09:11:35 PM
Mine does the same, also it jumps from 62% to 60%
I'm guessing its rounding something somewhere else which causes this jump.