Hi,
I recently purchased the Newton Ibike 5+.
I did the first calibration (5min) and the 10min calibration ("Best accuracy" choice) with my profil configured in Isaac Software. All seem to be correctly done.
I have a question after my fisrt ride with the Newton. The Watts display is good and power responds well to the ride profile (uphill, flat, slight uphill and dowhill sections...)
However, i noticed that the power was to 0 Watt or very closed at very low power values for downhill/descent sections (-5% or steeper % slopes), despite the cadence isn't to 0 rpm and my pedalling constant. (The cadence sensor works well, i have my garmin computer also attached on my bike and the values are consistent with my pedalling).
I have to put a lot of force in my legs and/or to increase my cadence very high to reach a higher speed and so an acceptable or very low power value.
It is a normal performance from the Ibike Newton? It seems to be normal and logical (gravity influence, so it's difficult to have the same power as well as on flat or uphill sections) to have lower power values for downhill sections but i have doubts. I did'nt expected, from time to time, to have a 0 watt display.
Thanks in advance for your feedback.
Zero or very low power during Downhills/descents
-
- Posts: 13
- Joined: Sat Oct 31, 2015 10:23 am
Re: Zero or very low power during Downhills/descents
Please post a ride file showing the issue
John Hamann
-
- Posts: 13
- Joined: Sat Oct 31, 2015 10:23 am
Re: Zero or very low power during Downhills/descents
I have posted you all documents i could, my first ride, the ride cal (which seems to be perfect with the "Check calibration" in Isaac, see attachment) and the position of my Newton on the bike.
Maybe all it's ok and the Newton behaviour and calculation are normal. I had just a doubt concerning the lower or 0W power values in downhill/descent sections even if i kept a constant pedalling.
What do you think so?
Maybe all it's ok and the Newton behaviour and calculation are normal. I had just a doubt concerning the lower or 0W power values in downhill/descent sections even if i kept a constant pedalling.
What do you think so?
- Attachments
-
- cal ride-min (1024x528).jpg (247.48 KiB) Viewed 3316 times
-
- iBike_10_31_2015_0859_30_Miles_HiDef.ibr
- (979.54 KiB) Downloaded 241 times
-
- iBike_10_31_2015_0732_3_Miles_CalRide.ibr
- (130.86 KiB) Downloaded 227 times
-
- Posts: 13
- Joined: Sat Oct 31, 2015 10:23 am
Re: Zero or very low power during Downhills/descents
More photos
- Attachments
-
- WP_20151103_17_21_55_Pro (575x1024).jpg (249.91 KiB) Viewed 3316 times
-
- WP_20151103_17_20_30_Pro (1024x575).jpg (305.43 KiB) Viewed 3316 times