ElectricMotorcycleForum.com

http://racerxonline.com/2018/03/29/mx-sports-positionon-electric-motorcycle-eligibility-for-loretta-lynns

Cliffs: after talking with the oem's that help set the rules no electric motorcycles will be allowed. This is a race that allows an Open Class of any displacement.

Hey guys,
I want to change the Unofficial Zero Owners Manual logo to something else, but I dont have any great ideas. lol.
I was thinking of using a picture of a zero bike with a nice background, but by the time you shrink it down to fit in the corner of the wiki page, its just "a motorcycle" instead of instantly identifiable as a Zero Motorcycle.
So I decided to have a "contest" where you can submit whatever you think would work great for the logo and we will see what we can come up with as a community. Contest is in quotes as theres no prize other than being able to see your logo idea on the page.

Requirements:
You have to own the image/photograph.
It cannot have the Zero Motorcycle logo (but it can have pics of your bike)
It has to look good at  160x160 pixels (but a larger "master" image should exist)
It should convey an association with the subject of being a manual, being for zero motorcycles, and/or electric motorcycles..
It can (but not required to) say the words "Unofficial Zero Motorcycle Manual", but not in Zeros trademarked font.
You will be give permission for the image to be used on the site.


Im excited to see what we can come up with as a community... I know atleast one of the people reading this is probably a graphic artist. (or atleast more artistic than me)

So it FINALLY happened... For the first time on a mainstream car news source, I hear about a actual electric hotrod car... a Factory Five 818 coupe with a tesla drivetrain and chevy volt batteries.

http://jalopnik.com/electric-hot-rodders-combine-tesla-and-chevy-parts-into-1784988208

video:

So quick technical question.  When and how are the zero cells balanced by the BMS?

I assume it bleeds power off of the higher voltage cells to match the lower ones, like most other BMS systems.
It may even shunt a little current across the cell so that the cell doesnt charge any longer.

But at what point does this happen? Only at full charge? does it start at a specific voltage? will it give the "charger off" signal when it begins?

Lets say you had an extremely powerful aftermarket charger... you dont want the BMS to start bleeding that much power as heat, it would burn up... does the BMS account for this?
If it was built to be fail-safe, I assume it would first give an "charger off" signal.. and if the power goes too high after that, it would open the contactor... am I correct?


long story short... lets say you had a way to dump a J1772 (or two) into your bike within the 1C range... could you set the voltage limit to 116.0v so it kept the higher current all the way up until .2v short of full (assuming 4.15v per cell is full)  Or would the BMS restriction kick-in and require a cutoff at a lower voltage limit?

So I was showing a friend of mine the new FXS and he had tons of questions... Hes really into RC, so hes familiar with the power lipo and brushless motors can make but he stumped me on one question.

Whats the cell voltage at 0% charge? How low does the zero go before it shuts off to protect itself?
I checked the datasheet that I got from here and it said min voltage was 2.0v... but that seems way low to both keep it balance/drift in check and im sure there is a good safety buffer.. just like how we dont charge to the max cell voltage, but to 4.15 instead.

so what is the cutoff number?

http://lanesplitter.jalopnik.com/ride-review-the-zero-fxs-and-dsr-prove-electric-motorc-1757942929

Sean finally posted up his review of the zero.. its fairly honest. Its nice to read one from the perspective of someone that rides alot of motorcycles, rather then the perspective of a regular person who thinks bikes are 'neat'.

So I have been researching the heck out of the Zero FX as a supermoto ever since I stumbled across a '14 on ebay with a supermoto kit.
I am familiar with EVs and have built a few, and I lived my 20s on motorcycles. Mostly sportbikes, dirtbikes and supermotos
I have wondered a few things about it, but its hard to find answers as it seems most e-bike riders dont tend to ride as aggressively as I am used to, or they're new to motorcycles.
I did find this one video tonight that answered some questions but made me have a few more:



Most of my questions stem from not having a clutch.

First one is for the track... on both my sportbike (with slipper clutch) and my supermoto (2stroke) I drop down several gears while braking, and use the clutch to keep the rear wheel "loose".. its hard to explain, but the rear wheel is sliding while still spinning and this lets the bike rotate into the corner. Done aggressively on the brakes, it can let you back the bike in... its all down to the clutch to do this well. Also on the sportbike, using the rear brake/clutch settles the bike and limits how fast the rear wheel comes off the ground.. the longer its down, the harder I can brake.

How can I deal with this, without a clutch input? I dont care if its a mechanical clutch or not, but its a input I am missing. Does the bike compensate for this somehow with smart e-braking the rear wheel? or is it a constant amount of max regen that tapers off, like every other ebike type controller?


This one is a bit immature I know, but it has to do with fun for me...On a supermoto, I expect to wheelie often, but I dont always want to go fast when I do so.

On a motorcycle there are two kinds of wheelies. power wheelies and clutch-ups.
On a powerwheelie, you just roll on a ton of power. The front comes up slow as the bike accelerates, and if you keep going you can get to the balance point, but by then you are going FAST. You have to keep accelerating to get it up.
On a clutch up wheelie, you dump power from the motor using the clutch, to yank the front end up... the front comes up fast.. but you are not constantly accelerating, so you do not have to go that fast. You can actually stop while its coming up.

For the zero to wheelie, you need that instant snatch up that a clutchup does, because the bike does not have the power to keep accelerating in a sportbike-like powerwheelie.
From the video, I can see it SOMETIMES has the ability to snatch it up, but not consistently.
I would expect throttle response faster than my CR500 since its electric.. but I suppose they may have had to soften the curve of it somehow...
Since your throttle has to do the jerk of the clutch to get it up AND it has to be controllable under normal riding... it makes it really hard, since it needs to be touchy to get it up... but most people would dislike that the rest of the time.
Is there a way to remap the throttle curve to be more direct?

The last question is from the video... I overlooked the fact they put ABS on the supermoto. While it has its place on bikes, I dislike it for my (admittedly aggressive) use. Does anyone know if you can order it without the ABS?? If I can not, I will be paying the premium for it, only to remove it and have to make new braided lines... on most bikes its a $1000 option.  This is not out of a misplaced dislike of ABS, but rather out of the fact that I like to do stoppies, and I enjoy a better direct pad feel at the lever.
As another question, does anyone know what honda model the pads cross over with, so I can shop for replacement pads if I do not like the feel...?