John, Good idea to correct for weight differences. Better to record the data as it appears as a new variable, and then apply any corrections later to the entire data set after the fact, so we have:
Rider, PercentSpeed, WeightDiffLbs Clark, 82, 15 Fullylugged, 99, NA aeroperf, 96.5, 2.5 Yes, my touring bike is at least 15 lbs heavier than my road bike. We could take this "recording more variables" idea much further and make tables for rider, bike, route, and ride, and record all kinds of variables for each one. If I had infinite time... On Tue, Jul 27, 2021 at 6:21 PM 'John Hawrylak' via RBW Owners Bunch < [email protected]> wrote: > Clark > > I suggest aeroprof ratio is 98.2% after correcting for the weight > difference. It agrees very well with Fully Lugged's ratio, showing little > effect > > John Hawrylak > Woodstown NJ. > > > On Tuesday, July 27, 2021 at 12:32:08 AM UTC-4 Clark Fitzgerald wrote: > >> Thanks aeroperf! So on your touring style Rivendell you were 100 * 11.2 / >> 11.6 = 96.5% as fast as your road bike. Now we have three data points! I >> hope to see some more... >> >> Rider, PercentSpeed >> Clark, 82 >> Fullylugged, 99 >> aeroperf, 96.5 >> >> On Mon, Jul 26, 2021 at 4:49 PM aeroperf <[email protected]> wrote: >> >>> Road bike: 1982 Team Fuji with all 2018 equipment (3x9-spd Sora w/105 >>> brakes, 622x28 tires, drops) >>> Riv bike: 2015 Sam Hillborn set up per factory (3x9-spd Suguino/Shimano >>> w/Tektro rim brakes, 622x42 tires, Albatross) >>> Both bikes had Sigma BC.12.12 computers which were calibrated. >>> >>> The road bike averaged 11.6 mph on 5 trials and the Sam averaged 11.2 >>> mph on 5 trials. >>> >>> To me, the big differences seemed to be in the gearing and rider >>> position. The Fuji has a 50 tooth big chainring, while my Sam has a 46 >>> tooth. >>> Weight seemed at best a secondary effect. The Fuji is 28 lb while the >>> Sam is 30.5 lb., but I’m 210 lb. >>> For another comparison, my 31.5 pound Soma Saga Disc heavy touring bike >>> averaged just less than 11.1 mph on the same 5 trials. It’s big chainring >>> has 44 teeth. >>> >>> -- >>> You received this message because you are subscribed to a topic in the >>> Google Groups "RBW Owners Bunch" group. >>> To unsubscribe from this topic, visit >>> https://groups.google.com/d/topic/rbw-owners-bunch/dGCoWB9yIZw/unsubscribe >>> . >>> To unsubscribe from this group and all its topics, send an email to >>> [email protected]. >>> >> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/rbw-owners-bunch/e7779fc9-23ac-406c-8850-59a019de20b5n%40googlegroups.com >>> <https://groups.google.com/d/msgid/rbw-owners-bunch/e7779fc9-23ac-406c-8850-59a019de20b5n%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> >> -- > You received this message because you are subscribed to a topic in the > Google Groups "RBW Owners Bunch" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/rbw-owners-bunch/dGCoWB9yIZw/unsubscribe > . > To unsubscribe from this group and all its topics, send an email to > [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/rbw-owners-bunch/316bf7a2-d625-4cbc-94ad-d6f5a4cf9be0n%40googlegroups.com > <https://groups.google.com/d/msgid/rbw-owners-bunch/316bf7a2-d625-4cbc-94ad-d6f5a4cf9be0n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/rbw-owners-bunch/CAE_rN%3D2OGJ4m-Uj5fSUSbvq3VYOL%3DC_V5hsSC145ZQPSbxy%2BKA%40mail.gmail.com.
