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Author Topic: 2017 SR top speed  (Read 873 times)

Doctorbass

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2017 SR top speed
« on: July 13, 2017, 07:02:11 AM »

Well i confirm: top speed is rpm limited and not power limited.

For me it is actually 172km/h and on flat at 20 degreeC air temp  it consume 34kW

This make me believe that for speed addict there is margin of 18 more kW for maybe 20 more km/h for 192km/h if the gear ratio is changed.

btw i saw peak of 64kW on the Zero apps and 781A burst.. not sure how acccurate it is but this give an idea!

Doc

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Zero Drag racing bike: 12.2s 1/4 mile and 7.3s 1/8 mile

T w i t t e r  :     http://twitter.com/DocbassMelancon

mrwilsn

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Re: 2017 SR top speed
« Reply #1 on: July 13, 2017, 08:34:07 AM »

Wow.... really?? I never saw more than like 580 amps in the app which I was disappointed to not see 775 but then realized it's consistent with 52kW spec.

If you see 64kW and 781 anp burst maybe keep that controller with isolation errors....haha

Now I'm wondering if there really is a problem with my controller. 😮

I have also hit 106mph but I hit max power before I get there then power tappers off.....for me max power is at 60mph in a drag.

Sent from my Nexus 6P using Tapatalk

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Doctorbass

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Re: 2017 SR top speed
« Reply #2 on: July 13, 2017, 11:33:52 AM »

Wow.... really?? I never saw more than like 580 amps in the app which I was disappointed to not see 775 but then realized it's consistent with 52kW spec.

If you see 64kW and 781 anp burst maybe keep that controller with isolation errors....haha

Now I'm wondering if there really is a problem with my controller. 😮

I have also hit 106mph but I hit max power before I get there then power tappers off.....for me max power is at 60mph in a drag.

Sent from my Nexus 6P using Tapatalk

What i meant about power required for running 172kmh is power when aceleration is finished and top speed is constant. then at this moment the power you read is the instantanous power required to sustain 172kmh.

Max acceleration at 60mph make sense as it is close to the 3500rpm at witch max torque start to decrease.

The current displayed on the apps is phase current i'm sure as 775A batt  woudl mean 80kW or 100hp witch is not possible as the controller rated battery current is 550A if i remember.

Other fact i observed is that the max power we can get change alot depending on the SOC of the battery.

i would say that between 100-70% i sont see any diff.. but then below 70% i staet feeling the torque is not sustaines at as high rpm as it is when above 70% SOC.

Doc
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Zero Drag racing bike: 12.2s 1/4 mile and 7.3s 1/8 mile

T w i t t e r  :     http://twitter.com/DocbassMelancon

mrwilsn

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Re: 2017 SR top speed
« Reply #3 on: July 13, 2017, 11:44:40 AM »

Yeah....that makes sense compared to what I see except I still don't know how you see 64kW and 781 amps in Zero app....do you mean you saw it in amps and watts on riding screen....or MBB logs? I have seen 790 amps show up in my MBB logs.

Sent from my Nexus 6P using Tapatalk

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Doctorbass

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Re: 2017 SR top speed
« Reply #4 on: July 13, 2017, 07:26:24 PM »

Yeah....that makes sense compared to what I see except I still don't know how you see 64kW and 781 amps in Zero app....do you mean you saw it in amps and watts on riding screen....or MBB logs? I have seen 790 amps show up in my MBB logs.

Sent from my Nexus 6P using Tapatalk

On multiple time saw burst power of 60kW+ during acceleratino when battery SOC is near full.. It was on teh apps... I think i will install again a Cycle Analyst just like i did on all my Zero since 4 years! i will have the true numbers i know.

Doc
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Zero Drag racing bike: 12.2s 1/4 mile and 7.3s 1/8 mile

T w i t t e r  :     http://twitter.com/DocbassMelancon
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