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Author Topic: Suggested Belt Tension for 2017+ dsr models (wider belt)  (Read 477 times)

JaimeC

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Re: Suggested Belt Tension for 2017+ dsr models (wider belt)
« Reply #15 on: March 18, 2020, 09:47:33 PM »

Thanks JaimeC, I tried 35kg and after I ride it became 50kg and was too tight... so much I was scared and put 30kg again when cold.

I would like to know your opinions because if everybody says that 50kg (in cold!) is good and nothing will break, I will use that. So again, thanks for your help.

According to Zero's specs, 50kg is NOT too tight... over 75kg would be.  50kg is right in the middle.
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1999 BMW K1200LT
2019 Yamaha XMAX
2021 Zero SR

KuRi

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Re: Suggested Belt Tension for 2017+ dsr models (wider belt)
« Reply #16 on: March 18, 2020, 10:10:54 PM »

In fact, both the Gates App and the Krikit tool show it is near the loose end:

Krikit: 30-35kg
Gates App: 45Hz

So maybe it is just my feeling and the belt should be more tight. I have looked a lot of videos of motorcycle belts and they always seem a bit loose, not as tight as mine with 50kg on it.

The weird thing is... if they want you to put 50kg on it... what give such a big range??? Why not just say 40kg-60kg :D :D :D

Thanks !
« Last Edit: March 18, 2020, 10:40:00 PM by KuRi »
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ZERO DSR 2020 - TOURING SEAT - TREKKER 52

KuRi

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Re: Suggested Belt Tension for 2017+ dsr models (wider belt)
« Reply #17 on: March 19, 2020, 12:01:11 AM »

One last note (I don't want to bother you anymore)...

I have set the tension to 35kg-40kg when cold, and the bike accelerates faster. I had never drifted before, and today the rear wheel drifted several times in sport mode when starting from a stop ^^
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ZERO DSR 2020 - TOURING SEAT - TREKKER 52

JaimeC

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Re: Suggested Belt Tension for 2017+ dsr models (wider belt)
« Reply #18 on: March 19, 2020, 12:09:28 AM »

Makes sense.  Less strain on the bearings.  BTW, other bikes HAVE to be on the loose side, because when the bike is loaded, the swingarm stretches the belt tightening it up.  When there isn't any load, The swingarm doesn't stretch the belt as much.  It's also why chain-drive bikes HAVE to have free play.  Because of the way Zeroes are set up, the tension is constant no matter what the swingarm is doing.

Over time the belt will get tighter because the carbon/kevlar belt doesn't stretch, but the rubber with the teeth swells as it gets older.  That reduces the inner circumference of the belt which makes it tighter.
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1999 BMW K1200LT
2019 Yamaha XMAX
2021 Zero SR
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