AeroPod, PowerPod and Newton

Power output whilst cycling is stochastic by its very nature [1], and therefore will fluctuate considerably whilst training out on the road due to air density and the gradient of the road etc. However, if you are performing intervals on a turbo or rollers power numbers will be more stable as these v...

Problem solved, I hope. After 7 hours of tinkering I had just about given up on any training today, then I thought even if power is not displayed I could glean from the speed/power curve in the ibike software what speed I needed to reach to attain the power required and then target that speed with m...

Yeah, I've reloaded the profile several times as well as doing several hard resets. Hopefully when John is online he will have an answer or enable me to load a slightly tweaked version of firmware 4.26 (so that the unit thinks it is a new update).

Nik

I have just tried using the profile for resistance level 2 of the emotion rollers whose speed/power curve look very similar to the Kreitlers, however the issue still remains.

Nik

No, I'm not using a custom profile. I have the standard roller profile loaded for the Kreitler 2.25 inch drums (though they are alloy and not plastic) with the fan one quarter open. I have also tried similar to what you suggested- I loaded the profile with the fan half open, but the issue still rema...

It seems to me the algorithm for the indoor trainer is somehow corrupted and operating in reverse. The higher the cadence or gear the lower the watts displayed. Unfortunately, resending the trainer profile or switching the indoor trainer mode from the software does not rectify the issue.

Nik

Yeah I've tried all those procedures mate. Oddly enough to0, the faster I pedal the lower the watts progressively dip. For instance, if I pedal at 200 watts at a reasonable pace and then wind up my cadence and power, the faster I pedal the lower the watts continually progress. Therefore, even though...

I have just attempted a training session on my rollers and trainer mode is consistently dropping power down to about 50 watts and will not display any watts above 200 watts, despite pedalling as hard as I can. No changes have been made to by ibike whatsover. Furthermore it was working fine when I we...

Yeah, I'm thinking of something like that. Possibly a a short S-bend, Z-bend or installation as per existing RWS installation under the aero wing, but with aluminium. I might also see If I have an old bicycle pump hose attachment and experiment with the rubber insert. There is still the issue though...

I'm thinking of putting something together like this, great idea!, but with aluminium as rruff suggested. Does anyone have any thoughts on giving the pipe some stability, besides the use of cable ties?- I'm pretty sure there is going to be some bouncing around and therefore likely to affect the wind...

Yeah there are a number of other online applications too, but if our metrics used for such calculations are already stored in the ibike software, why not have this feature rather than cut and paste metrics to other software.

Nik

That does sound useful, however I have no access to such apps as I don't use an iPhone or the idash. However, I thought its incorporation in the ibike software would be helpful particularly in terms of planning for time trials over various courses. As I mentioned many of the metrics in the ibike sof...

Another feature that would be good to incorporate in the ibike software would be the ability to determine the required speed and power to travel a certain distance within a give time frame. I know these sorts of calculators are available on certain websites, analyticcycling to name but one, but it w...

My Northern neigbour I think was absolutely correct on the issue of the tape affecting the pressure in the ibike. Before riding to work this morning I removed the gaffer tape-problem solved. The readings in the unit were as they should be. I think this just goes to show how sensitive these gizmo's a...

Yeah, I will do another CALRIDE on the weekend, thanks mate. I will also check to make sure the pin hole on the undercarriage is not blocked when I get home from work.

Nik

I'm just thinking, and I don't know why I didn't consider it sooner as a possible effect on my windscaling, but in the past week I have placed some gaffer tape along both the side edges of the ibike unit (for rain protection). The tape ends at about 3-5 millimetres from the entry to the windport on ...

Hi Guys, Thanks for your suggestions. It is strange that I should now need to do a a new cal ride and numerous coastdowns. The stats I posted in an earlier post are the numbers I have been using for quite sometime and have worked well for me. However, since Friday of last week, power numbers are tot...

I've just been for a loop around the Bay to see whether tilt calibrations and wind offsets performed at home have had any effect. But no. Again downloading the file I have -16 average ground speed. Whilst on the ride too I gunned it up to about about 46km an hour into a head wind. The reading on the...

Ok, thanks John. It did just seem strange that after updating the tilt calibration was off despite setting it prior to training (in addition to setting start elevation and doing the wind offset). Also for the ride yesterday I recorded a -16 average ground wind speed when I downloaded the file.

Nik

Since updating my ibike to firmware 4.25 and inserting a new battery on Friday evening the unit over the weekend consistently has under reported watts on the flats.I know this to be so because I train on the same piece of road, and at about 45km/h I should be doing approx 370 watts and not 80-90 wat...

I have the latest version of the ibike software, and the coefficients (or speed/power curves) listed are for e-motion and Kreitler rollers. I would not use these settings for your rollers. On several occasions I have contacted the manufacturers directly and they have been more than happy to supply t...

Thanks very much mate for taking the time to put that together. The figures do seem to correlate quite closely. I'm more of Thor Hushovd's type build: 84 kg, so It looks like at my weight +bike weight of 7kg I can approximately attain the required 300 watts at about 21.9 mph on resistance level 1, s...

Plugging in the numbers from the link that smhagger707 posted, it looks like for resistance level 1 the ibike's calculation of the speed/power curve is almost spot on with the numbers experienced with a powertap. If anyone has done any speed/power testing on resistance levels 2 and 3 and could post ...

Thanks very much for your response, mate. These figures will be very useful. Having placed the order for the unit, doubt was starting to creep into my mind as to the rollers speed/curve accuracy and whether it was a wise choice. Please do keep us posted on any other information you obtain. Thanks ag...

I have a set of e-motion rollers on order and I was wondering what sort of experiences people were having training with power (with the ibike) on them. I have read several post here about tyre pressure, rider weight etc affecting the accuracy of the speed/power curve compared to riding outdoors. I h...

Yeah, I didn't read any real technological assessment or evaluation in that article. I suppose it just goes to show though that on Twitter, Facebook, and in some occupations, you can pretty much pretend to be whatever you want to be, even a 'tech writer'.

Nik

It would also depend on the lighting system you use and where it is positioned. I predominantly use a helmet mounted ay up system with a narrow beam for early morning power training rides. Whilst the beam throws out light for a considerable distance the ambient light is also sufficient to casually g...

Not complain, pay for the mount or make do with what you have.

Nik

Does a release at interbike mean that it is quite technologically advanced?. Is it possible to divulge any more details without spoiling the show?

Nik

Is the new mount for the ibike gen III available yet for purchase, and what is its cost?

Nik