Questions tagged [wheels]

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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 ...
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0answers
97 views

Torque needed to keep a wheel spinning at high RPM

I have a treaded wheel which is 16'' diameter and 4'' across (trailer wheel). If I want it to spin constantly at 2750 RPM, what amount of torque do I need to apply to combat friction and air ...
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1answer
46 views

Why is longitidunal force of tyre calculated negative in SIMULINK?

With the help of the Vehicle Dynamics Blockset of SIMULINK, it is easy to obtain longitidunal force (tractive force) of tyre by some of inputs. You can see one of examples below. In this simulation, ...
1
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1answer
73 views

Calculate Rolling Resistance Experimentally

I am trying to calculate the exact rolling resistance ($F_{rr}$) of my car. The approach I am going with is a coastdown test at a low speed so no drag slows down the car. From there I am going to ...
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0answers
436 views

How to regulate torque/RPM on an IWD vehicle

Generally, I'm interested in simple (DIY) electric vehicle design problems. I saw some photos of electric vehicles as in the following pic: or also you could check this youtube video. The vehicle is ...
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0answers
109 views

Cone shaped train wheels

I was watching this Feynman video and (as usual) his explanations make a lot of sense. Now I just took a train, and am not so sure anymore. Looking at the train wheels they did not appear cone ...
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0answers
199 views

How is rolling resistance accounted for in the Pacejka Curves?

I am simulating the acceleration of a car (FSAE) in a straight line. I have data of the Pacejka Curves ($F_x$ vs. $SR$) of the tire we will be using. The thing is that the curve doesn´t pass through ...
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1answer
35 views

What does a dual bearing motor mounting system look like?

I came across the following excerpt about how to mount wheels: The most robust system is the dual bearing system. In this, the wheel axle is mounted on two bearings and chain driven. This takes all ...
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31 views

For pure rolling , Proof for every point on wheel has velocity = vc + wr

There are 2 texts I have seen for every point on wheels finding out the exact velocity of certain points. The theory states for all is that : Every point on wheel has total v = rotational + ...
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1answer
62 views

How to mount skateboard wheels to an t-slotted framing

What is the best way to attach skateboard wheels to an t-slotted framing? Also, is there a more economical way? Bonus: How to design shock absorber for it?
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43 views

How far have we developed eco-friendly tyres alternatives?

Considering how bad rubber tires is for environment (Microplastic on tyre - NatGeo), Today tires consist of about 19 percent natural rubber and 24 percent synthetic rubber, which is a plastic polymer....