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12

Unbeknownst to many consumers, different helmet manufacturers use different molds for their helmets. Just like some shoe brands are known to be thinner or wider than other brands, some helmets are more oval, some more round, and some pointier. Even from the same manufacturer, their racing models might be different from MTB, skateboarding type, and general ...


9

You're meant to cross the crossing in two steps (you'll need two traffic light cycles to turn left, not like cars who manage in one cycle). I took the road names from here, which is, I think, the crossing you were photographing. Starting from Jahnstraße, you go straight (on the right of the lane) along with the cars coming from Jahnstraße. Arrive at the ...


9

I received an answer from the traffic guidance department of the city. They told that I can either ride on the car lane (left) and then use the regular car traffic lane. If I take the bus lane (right), I do not have to stop at any light at all. There is no cycle traffic light on the right post because cyclists on the car lane then might interpret that as ...


7

Front-mounted child seats are not illegal in Germany but face stronger restrictions than seats mounted in the back. Good sources and discussions (in German): http://www.gesetze-im-internet.de/stvo_2013/__21.html (the law) https://www.verkehrswacht-medien-service.de/kindersitze_fahrrad.html (good overview from a reliable source) You need to consider in ...


6

Does a bicycle helmet still has protection when slicing some 1-2 mm from the inner rigid foam at a size of a 1-2 cm circle? You don't know. It's as simple as that. The amount of material you're talking about removing is a tiny fraction of the helmet's overall volume but you simply don't know what effect that will have. You have no way of knowing if the ...


6

'584', '27.5' and '650B' are all the same thing, specified in different wheel size systems. These size wheels originated in the older French wheel size system and are called 650B (650mm being the diameter of wheel and tire). ETRTO (European Tire and Rim Technical Organization) specifies wheel rim diameters in millimeters (584mm in this case). Mountain ...


4

You should replace the balls for sure. They're cheap, readily available (from any bike shop -- just take in a sample ball), and would very likely solve most of your problems. You can also fairly easily replace the cones. You might have to order them, but they should be reasonably inexpensive. You may want to replace the axles at the same time (they often ...


4

The main function of a helmet is to absorb energy during an impact, I you think about it, the material that is between your head and the object being impacted, is compressed or crushed during the impact. In that regard, the more material there is to compress/crush, the more energy can be absorbed before it is too much for your skull to handle. This ...


4

Your first interpretation seems correct: you get special bike only green which allows you to position yourself at the front of traffic coming from the right on the cross street, effectively making a two stage left turn whilst staying on the right of other traffic. However, you say that when the bike only light is green, traffic coming from the left on the ...


4

I've never had a problem like this with dynamo powered lights. While thieves seem to be interested in clip-on lights, they don't seem interested in lights that need a wrench to remove. Of course, adding dynamo powered lights means adding a dynamo first, and it's important to take either a hub dynamo or a good bottle dynamo. The vast majority of bottle ...


3

Bell makes a headlight/taillight combo pack that is theft resistant because the housing is secured to the bike (usually the handlebar) by a couple of long socket cap bolts. These require a 2.5 mm hex key to remove and the ends are hidden internally behind the light plate. The light portion snaps onto the housing and it's not immeadiately obvious how it ...


3

If you're required to be in the bus lane, then the signals for that lane would apply. Otherwise you could be stopped waiting for the other signal and holding up a bus. For a cannonical answer, please refer to the local traffic regulations. They're totally in German though. When you find the accurate answer, please do post it here for future searchers.


2

In my opinion, the most reasonable option is to comply to what "bus traffic lights". BUT, I think this junction lacks bike traffic lights. Because, according to law, that is compliant with Vienna Convention on Road Traffic, that "white" signalizer on the right side of bus lane is: "light signals for buses and other vehicles performing payable passenger ...


2

I've ordered small and large parts from bike-discount.de. 100% satisfied and cheapest price for those specific parts at that time after comparing with at least 6 other known e-shops. Regarding cheap german bikes, I don't know about Radon (they don't seem to be well known to the rest of the EU), but I own a canyon torque for the last 3 years and a pal of ...


2

That bike is a Swabian brand from Konrad Kotter (who had until 1982 and again in 1987 the professional racing team Kotter's Racing Team) that later went over to Albuch The Albuch Kotter logo now looks like this:


2

I actually grew up near Bad Homburg, and have bought a used bike there. (You do realize that depending on where in Frankfurt you want to go, the way there from Bad Homburg can be quite far?) The two biggest bike shops there are Fahrrad Denfeld and Fahrrad Diehl. At least some years ago, both of these shops sold used bikes as well, and for reasonable prices. ...


2

I don't think this will help you much, but I own a record bicycle, a mountain bicycle, and this brand was sold a looong time ago in my country (Mexico), I hope that the fact that it was sold in my country help you find which brand produced that bicycle :)


2

The kind of side-ways wobble is quite normal for freewheels of the period and should not cause trouble. But it's also a sign that the axle is not perfectly straight which also overloads the bearings of the hub. Enough to cause wear. It may be possible to replace the cones and the ball-bearings but not the races which were rarely replaced. If you also replace ...


1

Here is a bike with the same down tube/seat tube arrangement: Here is a bike with the same top tube arrangement, and it looks like it might have the same down tube/seat tube arrangement:


1

Extracting the cup is possible, but tedious. After checking the bearing races, I saw several defects on race lines. Since that means either the wheel or the cup must be replaced, I had nothing to lose by trying to extract it. In this hub, it's impossible to push out the cup with a steel rod from the other side, because the inner diameter is too small. I have ...


1

I recommend not putting lights on a commuter bike that you can't truly secure (locked to a public bike rack is not secured). Invest in a good headlamp (where one is legal for use cycling). Your red blinkies can easily clip onto the strap at the rear of your headlamp. This has several advantages. When you get off the bike, the lights automajically come ...


1

I'd argue that thieve's motivations are mostly that they pretend to sell what they steal or, vandalism, it may even be the same person is picking you as a target for some obscure personal motive. A third one is that many bike accessories are by design "eye catchy", "attention grabbers", "nice to have" etc. I'm trying to convey that to sell better, they are ...


1

If you want to go left you'll have to position yourself at the right edge of the road. When you get a green (cycle only) light you'll cross the street that come from the right at the pedestrian crossing and you'll wait at the red traffic lights on that street. When they switch to green you go straight ahead. In fact it's a two steps left turn with the ...


1

A few German expressions that might help you in your search: Bicycle in general: Fahrrad Road bike with drop bars: Rennrad Mountainbike: Mountainbike Folding bike: Faltrad, Klapprad Cruiser bikes: Hollandrad 3-Speed: 3-Gang-Rad Cyclocross bike: Crossrad, Querfeldeinrad (almost obsolete), Querrad, Radcross-Rad Hybrid bike: this gets difficult, as it might ...


1

I have ordered components there several times and in most cases everything went fine. The last order had some flaws but as far as I could reconstruct that was more the parcel service's fault than theirs. I cannot tell anything about their bikes from own experience but the last time I was buying a bike (some 6 or so years ago) a lo of people seemed to ...


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