Questions tagged [bicycles]
The bicycles tag has no usage guidance.
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Why aren't tricycles use cardan shafts?
All the tricycles I saw use chains. It looks far from being efficient comparing the regular bike:
Notice how long the chain is. They have to use 2 chain idlers. The back path is inside the curved ...
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Fabricating a Strong Hub Shell for a Bicycle
I'd asked this question over at SE Bicycles but they think this is more an engineering question.
The flange on my hub broke and I'm having to get one fabricated. The part is actually a cage that ...
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Fabricating a Strong Hub Shell for a Bicycle
I'd asked this question over at SE Bicycles but they think this is more an engineering question.
The flange on my hub broke and I'm having to get one fabricated. The part is actually a cage that ...
- 101
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Is it possible to prove that applied forces to a bicycle top tube are worse than a seatpost when using a repair stand clamp? [closed]
This stems from the idea that you should use a bike stand clamp on a seatpost, if you can, for carbon fiber (CF) bike frames. Hopefully, this would avoid the cracking of a CF bike frame.
In order to ...
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What is the name of the type of diagram that displays all the forces that act on a moving bicycle so that it stays in balance and does not fall?
If I were to draw a diagram the system of forces acting on a bicycle at high speed in order to demonstrate that the bicycle does not fall over, what is tat type of diagram called?
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How are sealed bearings assembled?
Sealed bearings are a common component on modern bicycles.
Even if you take off the plastic covers of sealed bearings, the ball bearings inside will not fall out.
How is such a part assembled in the ...
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Street like tyres on smaller bike? [closed]
Is it possible to get rolling resistance of best street tyres on smaller wheels say 20", 16" or way smaller like scooter or in-line wheels ?
Looking for best options for specials like ...
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How to change the direction of a chain-sprocket system
I’m looking for a way to change the direction (90 °) of a motion transmitted by a basic chain-sprocket system. Is there such a thing as a chain-driven equivalent to straight bevel gears?
I’m planning ...
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Can epoxy bond two Aluminum alloy beams?
The bicycle component manufacturer Shimano makes crankarms named "Hollowtech".
Hollowtech crankarms are meant to be both strong and light. As the diagram below (source: Shimano) shows, the ...
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Why is the open-front bike stem design so widespread despite that it may be inferior to the closed-front design?
Context
Even major bicycle corporations have the occasional
product recall on handlebars.
It's easy to see why. The bike itself is a gentle, light, and nimble ~10 kg (for a road bike) object, whereas ...
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How to slow down an electric motor for pull cart?
I'm trying to retrofit an electric motor (such as this) to a pull cart as depicted below. I got most things figured out except for how to slow down the motor to a pedestrian speed.
Could I slow it ...
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Could radial bearings with brackets hold the weight and load of a large cart
Me and my partner are trying to build electric pull carts to assist elderly Korean women and men who collect paper boxes for a living. These boxes are sold for recycling.
They work virtually at every ...
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Working of planetary gear set in electric bicycle
For mid-drive electric bicycles where the motor is attached to the pedals, it provides helping torque which reduces the force that needs to be provided on the pedal.
So, how does a planetary gear set ...
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Is the bicycle the fastest possible human-powered vehicle?
It seems to me that bicycles have proven themselves to be the fastest human-powered vehicle in common usage. By “human-powered” I mean it has no fuel or power source other than the inputs given by a ...
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How can wheels with spokes concurrent at the center be solid?
A traditional bicycle wheel looks like the left wheel in the image. The spokes are not concurrent at the center. They connect with the hub at a near tangent.
Given their length-to-diameter ratio, it ...
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