PP in MTB check

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kdx200
Posts: 70
Joined: Sat Jan 14, 2017 11:09 am

PP in MTB check

Post by kdx200 » Sat Apr 13, 2019 4:23 pm

Hi John,

please see the attached to correct or confirm the setup.

did OB and its seems to be ok. I think sometimes underestimate the power..specially in flats.... going slighty up in the streets seems to be ok.

MTB 26x2.25 2,7 bar
handlebar locked
70kg me
12kg bike
1,75 height

i dont know if the parameters are ok. Long time ago with me TT bike i did some corrections you helped me in Isaac ... now i dont know where in the menu is this " arrow meter graph" to do the fine tuning.

thank you very much.
ale
Attachments
iBike_04_13_2019_0724_51_km_HiDef.ibr
(1.19 MiB) Downloaded 2 times

Velocomp
Velocomp CEO
Posts: 5747
Joined: Fri Jan 11, 2008 9:43 am

Re: PP in MTB check

Post by Velocomp » Sun Apr 14, 2019 7:38 am

Your CdA for the mountain bike position is too low. It should be around 0.433; the attached profile will fix it.

I'm also suspicious that your wind scaling is low, causing apparent constant tail wind. I changed it, but please do a short out and back ride, and post it for further checking.

Corrected ride file and profile attached.
Attachments
kdx200.ibp
(505 Bytes) Downloaded 5 times
kdx_04_13_2019_0724_51_km_HiDef.ibr
(1.19 MiB) Downloaded 4 times
John Hamann

kdx200
Posts: 70
Joined: Sat Jan 14, 2017 11:09 am

Re: PP in MTB check

Post by kdx200 » Sun Apr 14, 2019 4:22 pm

Thank you... with this corrections seems to be ok as my efforts.

Doing a new OB is clicking the 4 second PP button protocol?

Thank you
Ale

Velocomp
Velocomp CEO
Posts: 5747
Joined: Fri Jan 11, 2008 9:43 am

Re: PP in MTB check

Post by Velocomp » Sun Apr 14, 2019 5:12 pm

Sorry, I was unclear.

Do NOT do a new calibration ride.

Instead, just ride your bike in one direction for at least five minutes, then turn around and ride back. Please post that ride file.
John Hamann

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