#cycling
Rotkehlchen prüft Reifendruck / Robin checks tire pressure
im Volkspark Rheinhausen, Juni 2023
#Vögel #Rotkehlchen #Rheinhausen #Niederrhein #Volkspark #Duisburg #foto #photo #fotografie #photography
#animals #birds #songbirds #robins #Fahrrad #bicyle #velo #cycling
Today I was told about the "StatsHunters" site. Great site to generate stats from #Strava activity, some of it similar to what the paid Strava plans generate. I only wish I had ended up on Strava sooner rather than jumping between various apps and thus losing data. Though of course, Strava being a centralized commercial service you never really own it or have any guarantees of that platform staying there. Still, it's the best I've found so far, many of the more open solutions having hugely unreliable apps.
Here is my public page: https://www.statshunters.com/share/2e5b4dc2b3d6
@Kathryn Barr and I did a 30 km bike ride today to try out the very western end of the Prescott Russell Pathway, which used to be a #railway. We went to Mile Zero and found the old tracks still there.
The shots are all from the 4 km segment of the old #train track we biked on. I won't describe Kathryn's route to get to the start and home again...
Never been on top of Pirunkallio rock before. Always wanted to when passing by. When returning from Haltiala I took a different smaller path this time which ended on the base of the rock, which meant either going up or going back. Of course I went up, mostly carrying the bike up and down. Nice view!
Cycling 101 - roundabouts
Just to provide my perspective as a long-time bike commuter and experienced cyclist, and to set it apart from those absolutely horrible constructs advertised as Dutch roundabouts, I'm showing here a roundabout that's excellent for fast, safe cycling.
#cycling101 #cycling #fahrrad #radfahren #verkehr #traffic #transport #safety
New bike! I've been meaning to get something for a while, something that moves a bit more than my 29" mountain bike. Something that I can take on a longer ride more comfortably.
I'm not really into drop bars and the Marin DSX has received a ton of good reviews for a budget gravel / hybrid. So here she is! ❤️
Moves really well, though I'm not sure about the fenders. They rattle. Might just remove them and look for some that can be stuck on only when needed.
1978 -- 2023: Cycling as a Part of Daily Life
Looking back at almost half a century of riding bikes as a family, utility cycling at home, riding to work, transporting our children and getting around during vaccations. Here in Germany, children learn to ride bicycles early in their lives, usually even before elementary school. So did we.
I used a 24" bicycle with an F&S "Torpedo" hub for getting to school at an age of seven or eight. But like many we aspired to motorization later in our youth, moped, motorcycle, first car, you get the picture. Fast forward, in 1978, still studying at the local university, we decided to buy two touring bikes, expensive for our financial circumstances at the time. She bought a Peugeot P65 Randonneur with a mixte frame, I got a PR60/L based on a racing bike frame. Both served us well, we even transported our children in child seats mounted on the luggage rack, later.
The following photo shows both bikes from a tour in 1982 through France.
1978 ff
In 1993, we hadn't used our family car much at the beginning of the decade, so we decided to get rid of it altogether and didn't buy another car for that decade. Anyway, new bikes were needed, both bikes were already very worn out, mine had already undergone various conversions. So we bought new bicycles, my wife gave away her bike, my PR60/L got relegated to the cellar in 1995 as a backup:
Until 1995
We bought more bicycles,later, but that's for another story, too. Fast forward again to today. The following picture from a ride two weeks ago displays one of two bicycles I built myself in March/April 2023. We wanted new bikes for similar reasons, the old ones became somewhat fragile, our usage patterns changed. We're old now, building up or even retaining strength isn't as easy as before, anymore. Bicycle technology has made some progress in terms of gear operation and range, during the last decades, that helps a lot. As long as we don't need an electric wheelchair, we don't need electric bicycles either. 😛
2023 ff
For the curious: Picture taken here. Remagen, looking over the Rhine from below the Apollinariskirche.
#cycling #radfahren #fahrrad #utility #everydaycycling #CyclingasaPartofDailyLife #health #transport #children
I often like to do thought experiments while #cycling and sometimes I can't think all the way through to the end of the answer. Here's a recent one for #physicists who specialize in #relativity. A #bike's #wheel rotates such that the bit in contact with the #road is instantaneously at rest with respect to the #ground (as long as you're not skidding), at least in #NewtonianMechanics. On the other hand, the bit diametrically opposite to it is moving at precisely twice the speed of the #bicycle.
Now, imagine a #cyclist with the speed of #Hermes and the strength of #Heracles who can go as fast as possible but within the confines of what we know about the real world. If the above still holds, about the #tyres of the bike, then, in the limit, the top of the wheel can go no faster than the speed of light, c, and the mass of that bit of the wheel increases without bound. Does that mean that the bike itself cannot exceed c/2?
2023-07-20: Hausrunde Bonn, Flerzheim, Campus Klein-Altendorf, Lengsdorf, Alter Friedhof, ...
Erst abends um 17:30 losgefahren, querbeeet durch die Landschaft, über die Felder hinter Flerzheim, Blick auf die Tomburg, die Esel am Campus Klein Altenburg besuchen. Morgen soll's regnen, deshalb heute, Landschaft gucken, dann zum Abschluss ein bißchen Anstrengung: 16 % auf dem Stück von der Mordkapelle hoch zum Kreuzberg, 12 % auf der Kreuzbergalle.
#rennrad #radfahren #fahrrad #cycling #hausrunde #muskelmotor
2023-07-18: Fit und Fun gleich vor der Haustür
Gestern bin ich mit dem Rad mal keine meiner Strecken vom Typ #Hausrunde gefahren, die mich weit hinaus aufs Land bringen, sondern bin erst am Abend das gefahren, was ich meine #Friedhofsrunde nenne und praktisch direkt vor der Haustür liegt:
Konkret erst mal über den Stationsweg durch den Friedhof (keine Sorge: das ist ein beidseitig abgetrennter Asphaltweg, der in einem Trog verläuft), dann im weiten Bogen durch Lengsdorf, den Ippendorfer Hang hoch bis zum Kottenforst, von da zurück und einen Abstecher durchs Katzenlochbachtal zum Ortsrand von Röttgen (in der Kartenansicht rechts oben), den Kreisel herum, dann zurück und die Ippendorfer Allee hinunter und erneut am Friedhof vorbei, über die Kreuzbergalle rauf und runter. Etc. Schließlich dann zurück über die Ippendorfer Allee nach Bonn.
Bei Anstiegen zwischen 12 Prozent (Kreuzbergalle) und 14 Prozent (Stationsweg und Wallfahrtsweg) bedeutet das Arbeit. :-) Ingesamt bin ich in den 64 Minuten mit einem Schnitt von 18 km/h und 143 W gefahren, i.W. ohne Pause, deswegen auch keine Fotos.
Fun fact: als ich am Botanischen Garten unten in Poppelsdorf vorbeifuhr, überholte mich ein Rollerfahrer, grinste mich freundlich an und rief im Vorbeifahren laut "Vierzig". Nun gut, ich ich hab' ein bißchen reingetreten, wieder aufgeschlossen und nach einem Blick aufs Navi gerufen "Dreiundvierzig!". Antwort: "Fünfundvierzig!". Könnte hinkommen. Dann hat er mir noch einen schönen Tag gewünscht und ich hab' mich mit Daumen hoch bedankt. Natürlich bin ich nicht mit dem Tempo weitergefahren und hab' da auch nur so reingetreten, weil ich einerseits gut angewärmt war, es da übersichtlich, potteben und gut asphaltiert ist und ich nicht mehr weit zu fahren hatte.
#fahrrad #radfahren #fitness #fun #cycling #muskelmotor #unterhaltung
Der Rhein bei Remagen
Kurze Pause kurz nach Sieben, auf etwa halber Strecke.
Distanz 63.29 km - Zeit 3:06:49 - Ø Geschwindigkeit 20.3 km/h - 691 m Anstieg gesamt - Mittlere Tretleistung 108 W
Heute bin ich in den Abend hineingefahren, um mal bei Temperaturen zu fahren, die man aushalten kann. Überwiegend radwegfreie Landstraßen, wie immer. Die Flasche habe ich leergemacht (950 ml, halb Kranenburger, halb Gerolsteiner) und einen 223 kcal-Müsliriegel gefuttert, bei einem Gesamtkalorienverbrauch von geschätzt 1300 kcal. Da schmeckt dann das Abendessen um so besser.
#fahrrad #rennrad #radfahren #hausrunde #remagen #muskelmotor #cycling