Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[bigd]

@protomech"Tradition is pizza every 1k miles. Only oil the bike has to deal with : )"
I spit up my orange juice on that one  lol

[aelwero]

taking a few liberties with your document...  hope it's ok...  I'm just one of those excel guys.

added a column for purchase date, so that the math can calculate miles/day ridden since purchase...  better representation than by using model year, especially with a few us having bought 2012 models this year    also extrapolated the formulae to the end of the sheet, so it will work for any new folks that fill it in. 

for those who put purchase date in comments, I added the info in the new column, so your math is correct.  for the others I'll simply copy the model year over, and your new math will match your old math, and updating the purchase date will update the miles/day to new math.


If you guys have any special requests for it, let me know, I'm pretty good at this spreadsheet/math thing

Thanks! I had tried to do this myself, but Google Spreadsheets documentation was inadequate, and I'm typically a coder not a spreadsheet wiz.

google docs is a little weird because of right click limitations, but it follows typical spreadsheet formula systems close enough to sort out if you're into that kinda thing

debated fixing it for like 15 minutes actually.  usually don't "take over" with something like that, but it was pretty obvious where the math was trying to go, and I knew I could fix it easily, so I sorta took off with it a little.  good to hear nobody is upset by it

[mikeisted]

Just passed the 3,000 mile mark on my ZF9, owned since May 2014.  Started a regularish run of 60 miles round trip to university.  Only one waterproofing glitch so far, which I think I have fixed, but now heading into Autumn...  Loving the Zero so far, but mindful of potential issues.

[Richard230]

After putting 8k miles on my 2012 S, I now have over 3,500 miles on the 2014 S that I purchased in February.  In addition to that during that time I put about 8k miles on all of my other IC motorcycles riding longer trips.

[benswing]

The latest milestone, 22,000 miles.  I only go about 5,000 per year, but my summer trips give my mileage a 4-6,000 miles boost each year. 

[Larry295]

Have you noticed a drop in battery capacity (range) with 22,000 miles on the clock?

[benswing]

Still have the same range as when it was new.  Could do another 114 mile ride on one charge if I felt like it. 

[kensiko]

Still have the same range as when it was new.  Could do another 114 mile ride on one charge if I felt like it.

[Electric Terry]

Similar to Ben after 68,000 miles, each of my cells has the same capacity they started with.  I just have a few more cells now then I started with

[Larry295]

Wow 68,000 and still the same capacity? Now that's nice to hear!
Maybe they are not lying then when they say 300,000 miles and 80% capacity still!!
But I am wondering if it is also a matter of time. Imagining somebody doing 10,000miles in 10 years for example: way below number of charges, but 10 years time. Would that limit capacity?

[benswing]

Researchers are finding that total miles is main contributing factor to battery fatigue.  If you live in a hot area they will fatigue slightly faster, if you live in a cold area they will fatigue slower.  Fast charging doesn't appear to make much difference. 

Time also does not appear to make a difference.  I thought I read that in an article, but can't remember exactly which one right now.  I have strong confidence that battery concerns are mostly misguided and that they will last longer than expected.

[Doug S]

Time also does not appear to make a difference.

I'm pretty sure that's correct. My understanding is that lithium-based batteries, when idle (no load or charging current), form a passive barrier between the anode and cathode (positive and negative terminals). That reduces the self-discharge rate to almost absolutely nothing, which is why lithium primary (non-rechargeable) batteries have nearly infinite shelf life. A lithium battery that is neither charging nor powering a load is pretty much inert.

[mericle]

My batteries started degrading at 20k.  At  22k range dropped to less than half of nomal. Zero replaced the pack under warranty. Since then, I have had no issues.

[evdjerome]

How to update the spreadsheet if you bought your bike used and it's already in the spreadsheet under former owner's name?

My bike passed the 10k mark last week. Former owner put on the first 6.5k.

Jerome

[ColoPaul]

All range-capacity talk is interesting.   
First of all, range is not capacity.   Headwinds, speed impact your range, but not your capacity.  Temperature definitely impacts range (I get 40% less range at 20F than I do at 90F), and as Ben noted has an impact on capacity loss.

Also note that Terry has added lots of extra batteries to his bike, making it a "ZF21".   So his 68,000 miles is equivalent to about 19,500 miles on a ZF6 like mine, in terms of 100DOD battery wear.

How do you measure capacity then?  I don't profess to knowing the answer,  but here's what I've done.  I ride the Bike until the top speed WOT is 30 mph on a flat, no wind, 70-80F ambient.   I then charge the battery completely, measuring how much energy it takes.   I've done this experiment 5 times over 2.5 years, as I don't like to discharge the battery that much.    When the bike was brand new, the kill-o-watt showed ~6.2 kWh.  Last month, after 16,000 miles (equivalent to 24,000 miles on a ZF9),  the kill-o-watt was showing ~5.9 kWh.   I can only assume that my pack has lost about 5% of capacity;  and that by ~65,000 miles (the bike will be 10 years old) I'll be at the 80% mark.   
If my pack really has lost 5%,  how would it show up in the "fuel gauge"?  I haven't perceived any changes in miles/bar for the top bars, but 5% is tiny compared to other range effects like headwind.  I think I can tell that the bottommost bar disappears faster, again hard to say.   Comments?