Elite Turbo Muin trainer power coefficients

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fishyweb
Posts: 14
Joined: Sun Oct 09, 2016 12:39 pm

Elite Turbo Muin trainer power coefficients

Post by fishyweb » Wed Jan 03, 2018 4:29 pm

Hi. I have just bought the Elite Turbo Muin turbo trainer. The power curve formula for this trainer, for models built 2014 and later is POWER=(5+1.02*{speed}+0.001*{speed}2+0.015436*{speed}3) where speed is in km/h. What would the coefficients be so that the formula works for MPH?

Also - any chance this trainer / curve could be added to the list of supported trainers native to the app?

Velocomp
Velocomp CEO
Posts: 4660
Joined: Fri Jan 11, 2008 9:43 am

Re: Elite Turbo Muin trainer power coefficients

Post by Velocomp » Wed Jan 03, 2018 5:43 pm

For MPH, the conversion factor is

1 MPH = 1.61 KPH

So, basically, you multiply your MPH reading by 1.61, to get the same speed in KPH, then apply that into the formula.

POWER=(5+1.64*{speedMPH}+0.00259*{speedMPH}2+.064419*{speedMPH}3)
John Hamann

fishyweb
Posts: 14
Joined: Sun Oct 09, 2016 12:39 pm

Re: Elite Turbo Muin trainer power coefficients

Post by fishyweb » Wed Jan 03, 2018 5:45 pm

Actually, I've just done some more poking around in Isaac and my question is now different.

I've set the Trainer Coefficient window to Metric and entered the values as per the above formula, and that has displayed a curve which looks to have the correct mappings. However, I'm not sure how to save these settings so that they appear in the list of trainers and allow me to upload to my PowerPod. I've attached a screenshot of the Trainer Settings window. Please can you advise how I should proceed here?

Note that I have checked the Isaac help document, and that doesn't seem to cover this level of detail.
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Trainer coefficients screenshot
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Velocomp
Velocomp CEO
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Joined: Fri Jan 11, 2008 9:43 am

Re: Elite Turbo Muin trainer power coefficients

Post by Velocomp » Wed Jan 03, 2018 6:10 pm

In the window where you set the coefficients, after entering them click the "Send to iBike" button, to transfer the coefficients to your unit
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Screen Shot 2018-01-03 at 5.08.37 PM.png (196.34 KiB) Viewed 325 times
John Hamann

fishyweb
Posts: 14
Joined: Sun Oct 09, 2016 12:39 pm

Re: Elite Turbo Muin trainer power coefficients

Post by fishyweb » Sun Jan 07, 2018 3:38 am

Hi. I still have a problem with using this trainer with my PP. The nature of its speed sensor requires the wheel diameter to be set to the actual diameter divided by 13.2, which equates to about 159mm. In Isaac, I can only find a way to set the wheel diameter by using tyre markings, I cannot see any way to set a custom diameter. Please can you advise? Or could this be achieved indirectly by fiddling one of the trainer coefficient parameters?

texmurphy
Posts: 107
Joined: Fri Jan 29, 2010 5:16 pm

Re: Elite Turbo Muin trainer power coefficients

Post by texmurphy » Wed Jan 10, 2018 8:17 pm

fishyweb wrote:...The nature of its speed sensor requires the wheel diameter to be set to the actual diameter divided by 13.2, which equates to about 159mm. In Isaac, I can only find a way to set the wheel diameter by using tyre markings...
In Isaac you can set the tyre circumference in Edit->Edit Profiles-> Basic
Change the field "Tire Sidewall Marking" to <measured> and then set the "Tire Circumference".

fishyweb
Posts: 14
Joined: Sun Oct 09, 2016 12:39 pm

Re: Elite Turbo Muin trainer power coefficients

Post by fishyweb » Thu Jan 11, 2018 4:51 pm

Thanks for your help, guys.

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