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Author Topic: Welp, finally snapped that belt  (Read 1354 times)

princec

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Welp, finally snapped that belt
« on: March 30, 2022, 06:33:18 PM »

Just overtaking someone, not particularly fast. Belt had just over 7k miles on it. No warning or anything, just suddenly lost drive mid-overtake. Sucks.

I will ponder my life's choices as I sit by the side of the road waiting for the AA.

Cas :)

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staples

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Re: Welp, finally snapped that belt
« Reply #1 on: March 30, 2022, 08:28:19 PM »

That is the worst. Snapping belts are not fun.
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Richtea

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Re: Welp, finally snapped that belt
« Reply #2 on: March 30, 2022, 09:02:39 PM »

Hmm, 7k. Maybe chains aren't so bad after all.

Better luck with the next belt.
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DonTom

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Re: Welp, finally snapped that belt
« Reply #3 on: March 30, 2022, 09:09:38 PM »

Just overtaking someone, not particularly fast. Belt had just over 7k miles on it. No warning or anything, just suddenly lost drive mid-overtake. Sucks.

I will ponder my life's choices as I sit by the side of the road waiting for the AA.

Cas :)
which year and make of Zero? I have very close to 20K miles / 32 km on my 2017 Zero DS. My most used bike.  A few less miles on my SR. Both are still on the  original belts. Have you recently checked the belt alignment and to see how tight it was?


I will change mine at every other rear tire change.


BTW, I was at the local Zero shop here the other day, and it seemed to me that all the belts on the NEW Zeros were way too tight. They also had a used Zero that seemed just right, from what I could tell by hand.


-Don-  Reno, NV
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1971 BMW R75/5
1984 Yamaha Venture
2002 Suzuki DR200SE
2013 Triumph Trophy SE
2016 Kawasaki Versys 650 LT
2017 Blk/Gold HD Road Glide Ultra
2017 Org Zero DS ZF 6.5/(now is 7.2)
2017 Red Zero SR ZF13 w/ Pwr Tank
2020 Energica EVA SS9
2023 Energica Experia LE
2023 Zero DSR/X

princec

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Re: Welp, finally snapped that belt
« Reply #4 on: March 31, 2022, 01:31:28 AM »

2020 SR/F. Belt tension correct at last check a few months ago admittedly but it didn't look odd when I set out this morning (I usually give it a twang). The overtake was in Sport mode and started at about 45mph (so I guess quite close to peak torque), and it went ping at maybe 70mph. Road was smooth and free of debris.

Is it a warranty item? I'm sure they shouldn't fail so soon.

Cas :)
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NetPro

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Re: Welp, finally snapped that belt
« Reply #5 on: March 31, 2022, 02:56:47 AM »

Just overtaking someone, not particularly fast. Belt had just over 7k miles on it. No warning or anything, just suddenly lost drive mid-overtake. Sucks.

I will ponder my life's choices as I sit by the side of the road waiting for the AA.

Cas :)
Your belt got you about 3 times as many miles as mine did.
A few months ago I was stopped at a red light and when it was time to go, the bike only moved a few dozen feet; barely enough to get me to the other side. And I wasn’t particularly hard on it, just your normal acceleration after a full stop.

I spent a lot of time and money trying to convert it to chain but for a couple of reasons decided to scrap that project.

Being that I truly hate the idea of being stranded again due to another belt snapping for no apparent reason, decided to buy the center stand for the bike (indispensable if you need to install a new belt on the road) a short socket drive that fits perfectly under the seat and the socket for the rear axle and torx bit for the belt tensioners.

After carefully folding a spare belt in half (have to be very careful there as carbon fibers are sensitive to rough twisting and one can easily damage the belt) and storing it in the bike’s cubby”,
I am prepared to replace my belt on the go if it happens again.
The only other thing I remember I added to my kit was a nail clipper to break the tie wraps around the electrical connector that goes to the tail light.

Once you know what needs to be done to replace a belt (at least on the 20 SR/F) it goes really fast; the design on these bikes have simplified replacing the belt a lot.

I think Zero used a belt one or two sizes too small for the torque on these bikes.
There is a Ducati with a massive belt I see in the showroom when I go to my Zero dealer for parts. Now, that is a belt that makes me envious and if it wasn’t an ICE bike, I would consider getting one. I like to see things engineered with “a marging for error” but I am digressing. . . .
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2020 Zero SR/F

princec

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Re: Welp, finally snapped that belt
« Reply #6 on: March 31, 2022, 04:27:17 AM »

No you're dead right, that belt should be nearly twice as wide as it is.

Cas :)
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DonTom

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Re: Welp, finally snapped that belt
« Reply #7 on: March 31, 2022, 11:56:25 AM »

No you're dead right, that belt should be nearly twice as wide as it is.

Cas :)
I wonder if that would reduce the range of the bike. And I also wonder if thicker would really help. IMO, belts breaking are kinda like flat tires. You just cannot predict when or if it will happen.


-Don-  Reno, NV
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1971 BMW R75/5
1984 Yamaha Venture
2002 Suzuki DR200SE
2013 Triumph Trophy SE
2016 Kawasaki Versys 650 LT
2017 Blk/Gold HD Road Glide Ultra
2017 Org Zero DS ZF 6.5/(now is 7.2)
2017 Red Zero SR ZF13 w/ Pwr Tank
2020 Energica EVA SS9
2023 Energica Experia LE
2023 Zero DSR/X

umrath

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Re: Welp, finally snapped that belt
« Reply #8 on: March 31, 2022, 05:34:13 PM »

I wonder if that would reduce the range of the bike. And I also wonder if thicker would really help. IMO, belts breaking are kinda like flat tires. You just cannot predict when or if it will happen.

I'm not aware that Harleys have any issues with snapping belts at the rate as Zero does.
And that is most certainly due to Harley sizing the belts much, much wider.

Yes, that costs performance. Of course!
But if a belt snaps, you have exactly zero performance.
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Zero SR/F Premium
(looking for a more offroad and touring capable solution)

Mooseman

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Re: Welp, finally snapped that belt
« Reply #9 on: March 31, 2022, 05:34:23 PM »

BTW, I was at the local Zero shop here the other day, and it seemed to me that all the belts on the NEW Zeros were way too tight. They also had a used Zero that seemed just right, from what I could tell by hand.

That is spot on. I've always thought the belt on my 2021 SR/S was too tight, but the dealership assured me it was okay (they also assured me that the headlights pointing upwards were okay... bunch of idiots). After the first tire change, my trusted mechanic tightened the belt to the best of his knowledge and now there is a lot less noise coming from it and there is probably also less drag (not enough change to affect the range though).

I have no idea how long it will last, but it's probably not a bad idea to have a spare belt. I just need to find another supplier as I have no intentions throwing any more money at the dealership where I bought the bike.
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2014 BMW K1600GT
2020 Tesla Model 3 LR AWD
2021 Zero piece of iron that doesn't work and can't be repaired

umrath

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Re: Welp, finally snapped that belt
« Reply #10 on: March 31, 2022, 05:43:13 PM »


I have no idea how long it will last, but it's probably not a bad idea to have a spare belt.

The problem is:
Carrying a spare belt is easy.
Carrying the necessary tools to switch the belt is annyoing, but doable.
Actually switching the belt in the side of the road (or even in the wild, when you drive a DSR or FX) is a pain in the rear.

I'd rather call roadside assistance in that case.
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Zero SR/F Premium
(looking for a more offroad and touring capable solution)

Mooseman

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Re: Welp, finally snapped that belt
« Reply #11 on: March 31, 2022, 06:05:48 PM »

I didn't mean to say I'd carry it with me. I have ways to get the motorcycle home. I'm more concerned that the dealership won't have a spare part and I'd be grounded for a couple weeks. Ontario summers aren't that long and I'd rather be able to fix the belt asap if it snaps.
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2014 BMW K1600GT
2020 Tesla Model 3 LR AWD
2021 Zero piece of iron that doesn't work and can't be repaired

princec

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Re: Welp, finally snapped that belt
« Reply #12 on: March 31, 2022, 07:11:11 PM »

The SR/F belt should in theory be dead easy to change by the roadside given the right tools (very few tools are needed I think). However.... I'd really rather not have to worry about it snapping in the first place. I wonder why Zero haven't addressed this after all this time?

Cas :)
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TEV

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Re: Welp, finally snapped that belt
« Reply #13 on: March 31, 2022, 07:33:22 PM »


I just need to find another supplier as I have no intentions throwing any more money at the dealership where I bought the bike.

I got my spare from here: https://www.af1racing.com/OEM-Zero-Drive-Belt-151-Teeth-ZM30-08226
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2019 ZERO DSR
2020 ZERO FXS

princec

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Re: Welp, finally snapped that belt
« Reply #14 on: March 31, 2022, 09:32:48 PM »

And for anyone in the UK I got mine from NYA:

https://www.nyaparts.co.uk/shop/electric-bike/motor-and-drivetrain/belt-151t-11mm-pitch-20mm-wide/

£221.99 and it was processed today by overnight delivery so I should be getting it tomorrow! Not bad service at all.

Cas :)
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