RBR 63 – Faster than OJ Through an Airport
Ride Bikes Radio is back! Since it has been a minute, we catch up. Then, straight into Brian’s plans for the next 12+ months of riding to celebrate the anniversary of his birth in 2024. Let’s just say he has a lot of miles and feet of elevation planned, and we get to join him on his journey getting ready. Speaking of, here is a copy of his Retul report.
Comments are open and we are looking for feedback on pretty much everything! You can also email that feedback in to feedback at rbr and we’ll get it.
We talked about the emergency SOS feature on iPhone getting used in Maui, OJ jumping things in an airport and the absolutely georgous Specialized S-Works Tarmac sl8.
Finally, the latest show under the White Roof is The Hollywood Car Show featuring Fireball Tim. It’s a really great show and we think there are a few of you that might dig it!
4 Replies to “RBR 63 – Faster than OJ Through an Airport”
Leave a Reply
Finally got round to listening – good to hear you both back. As regards apple watch algorithms – I’ve seen similar things myself. Usually record using a Garmin rather than my watch and the watch nags me to start “outdoor cycling workout” – generally don’t start a workout on it. If you don’t start a workout it seems to default to a run/walk and counts steps and heartrate from the accelerometers as if you are running/walking hence the inflated calorie values. On the rare times I’ve started a workout on the watch while cycling it actually seems pretty close to the values from the Garmin.
Interested in the direct HR Strap connect to the watch though – would be good enough to use for commuting distances anyway.
Thanks Niall!
Interesting thought about Apple watch. Mine will “start a workout”, typically after I’ve completed a work out (at least that is where I notice). Curious, if it tracks x calories when it thinks I’m walking (as an accelerometer), then why does that change because I selected another type of workout?
These are the questions that I’m having. Also, do these issues exist when using fancy blue tooth pieces of kit like HR straps, cadence sensors?
It’s just a guess of mine but I’d assume apple have the algorithms tuned to the most common body movements when cycling, running or walking etc. Its taking location, speed and accelerometers into account – if it’s detecting your cycling cadence and gps speed but decides you are running there is going to be a huge difference in calculated calorie burn compared to you telling it you’re cycling. Going to be the same if you start a cycling workout but then use the e-bike. It will make incorrect assumptions about the effort you are putting out for a given speed. I guess it depends on how they weight all of the data in the algorithm – if you aren’t in a workout it seems to rely less on HR, probably as it isn’t updating the reading as often.
On my “good” bike I have a full set of sensors – HR, cadence and a power meter, this gives consistent results – power is directly related to calories burned. The estimates from the watch are actually quite good for “normal” cycling (Not too fast, not too hilly, no strong winds – correct bike and body weight) Much the same as Strava will estimate power quite well over a complete ride but individual segments can be way out when not using the power meter.
I might use the watch more often to compare with the other data as an experiment – that will of course mean getting back out on my bike which has been a struggle lately!
Oh, and Tarmac SL8 – the brakes aren’t wireless but the hoses are hidden through the bars, stem, forks and tubes. Really aerodynamic and cool looking but a potential future maintenance headache.
Now that makes sense! ~db