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Questions tagged [flywheels]

19 questions
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3 answers

What do you call a mechanism where rotation is transfered in one direction only?

I have the following to wheels that rotate on the same axis: Assuming that they are stuck together, if I rotate the green one the red one rotates at the same speed and when I stop the green one the red one stops. I'm looking for the name of the…
Julian
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6
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4 answers

What are the technical obstacles for using flywheel-based regenerative braking on bicycles?

Is it possible to convert the energy you would normally lose when braking your bicycle to rotational energy by attaching an extra wheel which would start to rotate once you use your brakes? E.g., when facing a red light after riding down a hill. If…
Gert
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5
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1 answer

Calculate Forces on a Flywheel

I am working on a flywheel currently, and I was wondering what is the force needed to recenter the flywheel when it is spinning and it is nudged slightly off axis? Is it related to gyroscopic precession?
Sean
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5
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1 answer

Balancing flywheel and coupling shaft at home

I am rebuilding a mini soil compactor roller. I replaced the old 8 hp Kubota diesel engine unit with a new Dongfeng unit. I want to weld the coupling shaft, which is built from 2" pipe with rubber damper at one end, to the hydraulic motor. How can…
Firman Azis Rauf
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2
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Optimum spoke shape for wheels made of solid material

Currently I am designing a bicycle sprocket to be laser-cut out of 3mm steel. Steel is heavy, so I want to make some lightening cut-outs, and I want to optimize the shape of the cutouts. I will probably make a "spoked" type of pattern to the…
BetterSense
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5 balanced masses on wheel with different distances between them

I'm looking for a way to calculate possible balanced positions of 5 equal masses on the circumference of a spinning wheel such that the distance along the circumference between the masses are all different, and no distance is an integer multiple of…
spDuchamp
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1 answer

Slow Wind-up spring w/ increased output torque

I would like to design a gearbox that incorporates a spring that is wound by a flywheel over 10-100 revolutions. The input torque to the flywheel shaft will increase from 0-15Nm as the spring is wound. I would like the output force of the spring to…
Archer1
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In a flywheel system, is the maximum von Mises stresses located at the center of the wheel or the outer rim?

I just wanted to double check. So according to the following equations provided by Timoshenko, where little r is the radius from the center, maximum stress should occur at the center. However, every FEA analysis I've seen on YouTube for a flywheel…
ARJ
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1 answer

How do I ensure that the stresses are accounted for at the center of the wheel as well?

So I'm trying to run a centrifugal stress analysis on a flywheel in SolidWorks, but I'm unsure of how I should fix the model in a way where von Mises stresses are accounted for even at the center of the wheel. Most tutorials I've seen on YouTube…
ARJ
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Does moving the idler in a wheel and disk CVT conserve energy or momentum?

Consider the wheel and disk CVTs (continuous variable transmissions) below. Configuration A comprises a CVT disk coupled to the "system under control" 's', whereby a control wheel 'cw' constructed from a continuous omni-wheel engages with it…
Mr. Haelscheir
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Is it possible to simulate inertial load using brake?

Suppose to have an engine attached to a flywheel, I add power, the flywheel start to rotate and oppose a resistance to motion. More power, more resistance. I'm wondering if I can simulate this behaviour without an inertial mass, but only using a…
Mattia Piron
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How much torque does an engine produce when slowing down with no throttle?

If I rev (for example) a small 1.5L 4 cylinder engine up to 4000 rpm in neutral then let off the accelerator (gas) pedal completely, how much torque will the engine produce as it slows down? How long will it produce that torque? For example if had…
bearded_badger
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Fly wheel design in MSC ADAMS

I am trying to model a crank rocker mechanism with flywheel. The flywheel is attached on the crank arm join so the crank and flywheel will be rotating with same speed. My aim is to reduce the the torque fluctuation of four bar mechanism with…
ALBIN K SAJI
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2 answers

Role of the fly-wheel in a fatigue test of a damper

I would like to build a system to carry out a fatigue test of a damper. I am not able to understand the role of the fly-wheel in such a system. The base idea is a crank-shaft mechanism which has a constant angular velocity and moves the damper along…
Kristóf Németh
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Could this flywheel assembly have been safely built in 1960-62?

Reference: This question from Worldbuilding. I'm writing a time travel story set in 1962 and I'm in need of an analogue to Doc Brown's plutonium (or bolt of lightning!). What I settled on for my inventor's 'contraption' was flywheel energy storage.…
ehbowen
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