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Messages - geijuutsuka

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1
Zero Motorcycles Forum | 2013+ / Re: Broke the belt for for 4th time
« on: August 19, 2020, 07:23:07 AM »
Motojitsu has a good explanation of the how's and why's simply called "how to adjust your rebound dampening"  (he also covers compression and preload).  But basically you adjust the rebound in the rear so if you bounce your weight on the tail and stand back up (or push with your hand while holding the bike upright) it bounces back without coming up past it's normal resting point.  My SR came from the factory very soft.  I'd bounce my weight on it, and the tail would kind of "sink" upwards.  You adjust the rebound to the point where it's actually bouncing past the resting point then resting back down....then dial it back so it bounces back as fast as possible, without going past it's resting point.  The front, you're adjusting it so when you hold the front brake and push on the forks (then immediately stop pushing), it bounces back, then past the resting point MAYBE half an inch, then rests.  If you do these two adjustments, the tires will track bumps a lot better and your rear has a much lower chance of torquing the belt.

2
Zero Motorcycles Forum | 2013+ / Re: Broke the belt for for 4th time
« on: August 18, 2020, 01:38:11 PM »
Curious if you've ever set up the suspension?  The rebound for my 2019 SR was WAY WAY WAY too slow.  This means that the rear wheel doesn't stay in contact with the ground when it hits even minor bumps.  It's my belief that this is the main cause (after tension/alignment of course) of early life belt snaps.  Read somewhere that 15% of riders get their suspension tailored to them.  Made a huge difference in how my bike rides.  If you adjust nothing else, adjust your rebound front/rear. 

3
Zero Motorcycles Forum | 2013+ / 2019 SR Rear compression knob won’t turn.
« on: August 08, 2020, 04:19:57 PM »
Manual says simply to turn thr knob to adjust it.  Fingers will not move it wither way, i dont want to force it.  My wife’s SR is the same way.  There appears to be a very small, very hard to get to set screw in the knob that i thought about removing but i dont want to proceed until i know better.  Any responses are appreciated.

4
Zero Motorcycles Forum | 2013+ / Gurgling "water cooler bubble" noise from rear brakes?
« on: July 28, 2020, 11:07:38 AM »
2018+2019 SR's tested:

I posted this on the FB group as well, but want to cast as wide a net as I can to see if this is a common issue and to hopefully get some suggestions on how to fix:

When coming to a stop using the rear brake (or a mix of front/rear) the rear brake makes what I can only describe as a "water cooler bubbling" noise.  If I go to a parking lot, then do a number of hard test stops, it will silence the issue for most of the ride that day, but will return eventually, usually on the very next ride.  It's loud enough to hear through earplugs under a helmet and it's frankly embarassing since the the bike is so lovely and quiet the rest of the time.  Someone on the FB group called it a turkey gobble, I can see that as well.

Any ideas?

Thanks in advance!

-Cheers

5
Zero Motorcycles Forum | 2013+ / Re: Significant range differences in pair of SR’s
« on: July 19, 2020, 12:39:19 PM »
10-15% more on state of charge.  I’m new to zeros so im trying to keep up on the nitty gritty numbers game, but i’m not sure how your example works out, can you explain what you mean by 0 and 15% being the same? 

6
Zero Motorcycles Forum | 2013+ / Re: Significant range differences in pair of SR’s
« on: July 19, 2020, 10:16:54 AM »
Tire pressure on both bikes is 32psi front, 34psi rear

7
Zero Motorcycles Forum | 2013+ / Significant range differences in pair of SR’s
« on: July 19, 2020, 10:01:44 AM »
Both 14.4 charge tanks.  Belt tensions set by dealership according to the newer (25kg-76kg) standard.

Bike One: 3000miles, belt tension 35kg, 2018 SR
Rider One: 5’4”, 130lbs

Bike Two: 500miles, belt tension 47kg, 2019 SR
Rider Two: 5’10, 150lbs

All other details are identical.

We can start riding at the same time, in eco mode, at the same speed, hitting most REGEN spots at the same time, and the 2018 35kg belt will ALWAYS end up with 10-15% more in the tank after a 80+mile ride.  Sometimes i would tuck for a few miles to try and close the gap, but it didnt seem to help.

How much does height and weight factor in?  What about belt tension?  The 2019 rear wheel/belt is noticeably more noisy from the extra 12kg of tension between them, could this be recorded as drag?  Ive also considered brake drag as both of our bikes have it on both wheels (dealership said brake drag is normal??)  Both discs hiss on both bikes fairly equally so im at a bit of a loss. 

Any data is appreciated, cheers!


8
Zero Motorcycles Forum | 2013+ / Re: 2019 SR vibration at 63mph and beyond
« on: July 13, 2020, 08:05:59 AM »
UPDATE:  To my absolute surprise, the motor showed up wednesday and the SR was ready to be picked up Thursday.  Nothing but good things to say about our dealer at this point.  Rode the bike back in Eco and then took it out for it (the motor)'s maiden voyage.  Smooth as silk.  So glad to have it back!

9
Zero Motorcycles Forum | 2013+ / Re: 2019 SR vibration at 63mph and beyond
« on: July 07, 2020, 07:19:45 AM »
UPDATE:  It's now been a week, visited the dealer today, and they had just finished running  through all the checks Zero requested.  Zero decided a full motor replacement is in order.  I was told the motor is in the mail now and will arrive before the end of the week.  No shade to the dealer mechanics, but should I be concerned about this motor install?  What should I be looking out for if I want to double check the work for safety?  Has anyone else had to have a motor swap done?

10
Zero Motorcycles Forum | 2013+ / Re: Gas bike as backup? Good idea?
« on: June 30, 2020, 09:33:49 AM »
Quick update.  I bought the demo SR.  Rode it home in eco, extremely happy.  Went on a long trip that turned into a short trip once I noticed a vibration, then took it back to the dealer.  Case currently open with Zero.  Extremely glad I kept the Gas bike.  I would have hated to walk into the dealership and see my old bike looking at me saying " I told you so".  That being said, I CANNOT WAIT to get my zero back and actually ride somewhere that isn't the dealership!

11
Zero Motorcycles Forum | 2013+ / Re: 2019 SR vibration at 63mph and beyond
« on: June 29, 2020, 11:40:06 PM »
Not sure if they tried to spin up the motor without the belt yet.  Zero is talking with them now.  The dealer doesnt seem to want to tear it down any farther without zero suggesting it first.  What would they be looking for turning it up with no belt on a stand?  I assume its fairly safe to do this, and they’d be hoping to feel it vibrate without the belt)?

12
Zero Motorcycles Forum | 2013+ / 2019 SR vibration at 63mph and beyond
« on: June 29, 2020, 10:33:51 PM »
New 2019 demo SR (200~miles)  Rumble strip style vibration exactly at 63mph and up (from the rear/below the seat) Suspected rear wheel balance since the tire was swapped (previous dealer shipped it with weird cracks in it) and didnt have weights on it.  Took it to the dealership and had them balance it to perfect, they added weights, machine said it was dead on, vibration persists.  They think it might be a motor balance issue and are contacting zero now.  Sound familiar to anyone?  For reference the vibration increases the more throttle you roll on (any time after 63mph).  If you roll off, it mostly goes away......I will add that my wife also has a new 2018 demo SR that does not vibrate at all.  No other zero ive ever ridden (s, srf) have either.

13
Zero Motorcycles Forum | 2013+ / Re: Buying a demo bike. Advice?
« on: June 10, 2020, 03:14:17 AM »
All great advice, thanks everyone.  I contacted my dealer and will be taking a closer look at it when it arrives.  I should be counted fortunate since I'm only 30 miles from my dealer, AND they've been nothing but helpful so far.  Cheers!

14
Zero Motorcycles Forum | 2013+ / Buying a demo bike. Advice?
« on: June 08, 2020, 12:39:15 PM »
About to purchase a demo 2019 SR (charge tank) with 146miles.  Been reading a lot of posts and haven't found a whole lot about demo bikes other than discussing warrantee issues.  Can anyone clue me in on what I should be looking/asking for beyond drop damage...etc? 

I'm thinking about having them replace the belt before I pick it up regardless of how good it looks to them.  Knowing how people can treat the demo bikes pretty harsh just to test the limits of the tech.  I'm guessing there's a pretty high chance a few people hit bumps and had power to the rear, cranking the belt.  Basically, my wife and I want to put some miles on our demos, and we want to be prepared for any weak points before we get started.  I don't want to negate the savings of buying a demo bike, but I don't love the idea of the belt breaking in the first few months because someone had to "see what it could do".  Is there even a way to inspect the belt to see if it was abused, ie, spot weak teeth? 

Also, because of covid,  I have them sending me purchase orders through e-mail.  I don't love the idea of buying it sight unseen, should I go in there and take a look at it before returning to the bank (I'm financing it myself through my bank) after everything checks out and we make our final deal?  (My wife bought a similar demo bike during covid that ended up having drop damage the dealer didn't mention over the phone,  but we were already there with the check.  They ended up extending the warantee because of this.


15
Zero Motorcycles Forum | 2013+ / Re: Gas bike as backup? Good idea?
« on: June 08, 2020, 08:41:37 AM »
Correct.  I could have called this thread "spare bike?  Good idea?"  I guess I was speaking as someone new to electrics coming from the world of ICE bikes.  Obviously, if my finances allowed, I'd love to be sitting on an SR/F, and EsseEsse 9.  However, I feel equally stoked/fortunate that my wife rides, and we have 2 SR's and a Honda as backup/variety bike. Thanks for sharing your experiences, and helping me make my decision. Cheers!

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