WindScaling difference - Newton/Isaac 1.0.10, and Isaac 2.01

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NorBike
Posts: 31
Joined: Thu Aug 23, 2012 12:10 am

WindScaling difference - Newton/Isaac 1.0.10, and Isaac 2.01

Post by NorBike »

There's a Wind scaling difference between Ibike Newton/Isaac 1.0.10, and Isaac 2.01.

The cal rides test below was not done in very good wind conditions, but shows Isaac 2.01 get other scaling numbers:

Cal ride # ---Newton---Isaac 1.0.10---Isaac 2.01
Cal ride 1. ---0.979-------0.976-----------0.943
Cal ride 2. ---1.001-------0.999-----------0.963 (wind changed direction a bit)
Cal ride 3. ---0.978-------0.973-----------0.937
Cal ride 4. ---0.972-------0.962-----------0.949
Avg. WS------0.983-------0.978-----------0.948

(Isaac WS number from "Check calibration")

So my difference between Newton and Isaac 2.01 is avg. 0.035, not as much as last WS bug (http://www.ibikeforum.com/viewtopic.php?f=55&t=2534),
but a difference (A Cda 0.350 -> 0.363 difference)


NorBike
Last edited by NorBike on Wed Mar 27, 2013 5:57 am, edited 1 time in total.
travispape
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Location: Durham, NC

Re: WindScaling difference - Newton/Isaac 1.0.10, and Isaac 2.01

Post by travispape »

Send me the ride files and I will take a look: tpape at velocomp

Travis
NorBike
Posts: 31
Joined: Thu Aug 23, 2012 12:10 am

Re: WindScaling difference - Newton/Isaac 1.0.10, and Isaac 2.01

Post by NorBike »

travispape wrote:Send me the ride files and I will take a look: tpape at velocomp

Travis
I'm on Easter vacation for a few days now, but my guess is that you can take any Calride file and find the same issue.

Norbike
NorBike
Posts: 31
Joined: Thu Aug 23, 2012 12:10 am

Re: WindScaling difference - Newton/Isaac 1.0.10, and Isaac 2.01

Post by NorBike »

Just downloaded Isaac 2.10. The wind scaling difference is the same as in ver.2.03 (and 2.01)

With my "test ride file" Isaac calculate wind scaling number to 1.027, and Ibike Newton calculate wind scaling number to 1.07.
(3.01 firmware and isaac 2.03)

With Isaac 1.10.10 I get the wind scaling number to match the Newton's scaling number, so something happens after the Isaac 2.xx release.
I have not tried the 4.0 firmware, in case the firmware 3.x cause this difference,
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