Are these numbers too high

[james_95]

I recently picked up an iaero and I’ve been anxious to try it out. I did the whole fast setup then I went straight to a location for the cal ride and coast downs. I did a nice mellow cal ride on a very well paved bike path that was very flat. The cal ride was about 3.5 miles out and back. After the cal ride I immediately did 8 coast downs, 1 of which was messed up. Once again, this was on a very well paved bike path that was very flat, so flat it took a long time to coast down to 8mph. Because of the short distance I was working with on the coast downs I found myself accelerating to 20mph fairly quickly, not so “leisurely” like the instructions say. Anyways, my numbers came close to what the FAQ’s say is a track.

So I went out today for my first ride with my iaero on “calibrated” and being that I’m new to this I’m not sure how accurate this data is. I consider myself a fairly fit guy and I did push somewhat hard on a lot of this ride but my max speed was 65mph?? Not true, my Garmin says 37mph. This could be because I drafted behind another guy for about ¾ of a mile…but doesn’t the iaero adjust for that? Next question is the watts, 1105w max, isn’t that a little high? I was accelerating from the stoplights somewhat hard but I’m no Cavendish. Average of 246w for a 1 hour ride? Does this seem right? Average HR of 161 with the max of 181…I know this is right, my Garmin confirmed it. I have attached my ride file and I was hoping one of you experts can take a look at it and see if everything looks ok? Yes, I bought this book “Training and Racing with a Power Meter” but I haven’t received it yet.

Thanks for all your help,
James

[Velocomp]

Your ride file has speed spikes, indicating that your magnet/speed sensor isn't set up properly.

Speed spikes will cause watts spikes.

Make sure to have the spoke magnet pass by the black vertical gap of the speed sensor, about 1-2 coin widths apart.

The rest of your setup looks great!

[james_95]

I readjusted the magnet to make sure it was close enough (it’s a Garmin dual sensor) and did another ride today and I’m still getting speed spikes. It seems like if I download the ride and do [Tools] [Analyze Route] it corrects everything and makes the numbers more realistic. Is this something I should always do to the ride file? Maybe my battery is low on my Garmin sensor. Here is my new ride file, does it look ok?

Thanks,
James

[Velocomp]

Yes, you still have speed spikes.

You might want to try replacing the battery in your Garmin sensor.

In the mean time, you can use the iBike software tool Tools/Remove Speed Spikes in Ride to remove these spikes. It works great, and your iBike file looks fine afterwards, too!