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@mschwett , you were asking about Pmax at 80 cadence. Here's a chart from my 100/100 segment that shows the average and maximum Pm recorded per cadence. Pm max values are all about 400. The P mechanical would be P electrical * efficiency at that cadence. Probably all my Pr vs Pm charts...

Hooray, all the rides download using the ride.specialized.com browser link. It just the phone app that is buggy.

I did three more test rides this afternoon. 5 minutes at 100/40, 20/100 and 30 minutes ar 20/20. Unfortunately I could not download any of these 3 .fit files. As soon as I click “download” in the app I get an error message saying ”Sorry, can’t download. Try again later”. It never works later...

Jeremy, I eliminated all records with cadence < 60. The data at low power, low cadence is very noisy. Most of the records are in the 70s and 80s with relatively few 90s where I’m really pushing.

A new trial, a little longer and with more rider effort to more clearly define Pm saturation values. I just did 40/40 and 40/100. Summary from the Spec app: ____________________Distance______time_______avg MPH_______Adj Rider power______avg motor power Ride one...

Here's the 100/100 curve, the instance that fits the Spec table data the best. Blue dots and lines are my data from .fit file. The red line is defined by Pm = 0 at Pr = 0 and Pr = 85 at Pm = 380. In other words rider effort of 85 watts gets max motor watts. Looking at the dots and lines it...

mschwett said "how many samples do you have for the 40/100 where cadence > 60 and power > 50 and < 200 or so? ideally there's 5 min or so of steady state data for each setting, so a few hundred samples before smoothing and 50 or more after." the curve above has 236 data points (seconds) fitting...

Getting old sucks!

By eliminating all the cadence < 60 records most of the low Pr records are gone too. For 100/100 slope is 5.5, cutting 20% to get mechanical power would make it 4.4. Seems unlikely though it would be "4.4 times you."

Electrical input

Boost ratio and Pm as a function of Pr

Coming soon.

A little more context. Here's the individual chart for 40/100 with all records where Cadence and Pm and Pr are >0 And here's the chart with records where cadence > 59. These charts were done in LibreCalc. It did the best fit linear trend lines. For the combined chart above I estimated the...

It's with some concern that I post this chart as it refutes my whole understanding of how the xx/xx and xx/100 tunes work. I rode up and down the same street in approximately 1 mile laps in 20/20, 20/100, 40/40, 40/100, 70/70, 70/100 and 100/100. The chart shows Pm as a function of Pr for...

Bosses on the top of the top tube also.

Yes, the ranger extender battery is an option. The display will show charge levels of both batteries and you can program which battery gets used first. I did a short range calculation as part of my Pm vs Pr experiments. 20/20 tune with an avg 10 mph showed 110 miles on 90% of a full battery...

Sidebar about the Spec website: All the SL 2 4.0 and 5.0 models are back plus they added unequipped versions of the 4.0.

Just finished a ride with 20 segments, about 1/2 mile long in 1-10 xx/xx and xx/100 tune settings. Now I get an error saying can't download file. Please try again later. Also, turns out there is a 00/00 microtune setting as well as a 00/100. Setting the display to show rider power and motor...

More conflicting info This is the ride data graph from the Spec app showing segment where I was in 10/100 then changed to 0/100. From this it apears that the motor was indeed off. This directly conflicts with the Spec chart showing rider power needed to get max motor power. WTF?

Correction to my comment above about the motor making noise when turned off and how easy the bike is to pedal unpowered: I set micro tune to 0/100 and assumed that meant the motor was giving 0 support. I was just looking back for info about Spec published motor power and saw in post #21 that...