Questions tagged [traction]
13 questions
6
votes
6 answers
Why do drag race semi trucks slant to one side?
I've been watching drag races of semi trucks and found that, especially during the initial phase of acceleration, they all bend to their right-hand side.
I understand, that the huge torque in rear wheels would lift the whole front of the truck, but…
ohaleck
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5
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2 answers
Should I discard part of the data (steel traction test)
(please excuse my bad English. I don't speak English)
I have to deal with an old hydraulic machine, recovered from a deposit. I have no knowledge on mechanical engineering. Only civil engineering.
The machine is for doing traction tests on steel…
zexot
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1
vote
1 answer
How to find the stroke and bore of a tractor engine
Given that a 4-stroke and 4-cylinder diesel engine have a ratio between its stroke and its bore as 6:5. The engine operating at 2000 rpm uses 7.5 liters of fuel and 240 kilo liters per hour of air. Assuming that during each intake stroke, fresh…
MICHAEL UMANDE
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1
vote
1 answer
On Which Side Will The Tyre Wear Out More?
Whilst watching a F1 race recently I noticed the commentators talk about how all the cars on that race day started observing more/faster wearing down of the tyres on the front left of the car relative to the other tyres on the car. It got me…
Rishi Chauhan
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1
vote
2 answers
Rotational and translation DoFs in structural mechanics
I'm a computational person, and I don't quite understand how rotational DoFs are manifested in the linear elasticity equations. I understand the translational DoFs are simply the displacement components. When specifying boundary conditions for…
anonuser01
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1
vote
2 answers
Equal power transmission in 4x4 vehicles?
If a 4x4 (true 4x4 not AWD) has 3 wheels slipping, does the one tire with traction receive all the torque available from the transmission? Is there typically a reduction in power transmission in 4x4 systems to the wheels that are not normally…
willpower2727
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1 answer
How to calculate clearance volume in internal combustion engine of a tractor?
To begin with, a tractor engine is provided to identify and calculate the terminologies associated with it. The bore diameter and stroke length is given as 15.84 cm and 8 cm respectively. Having calculated the piston displacement to be 1576.486 cm3,…
MICHAEL UMANDE
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0
votes
1 answer
Can stress tensor be defined on feature edges?
Assume a rod is being extruded out of a cylinder by pushing the cylinder into a hole (See Figure below).
Do the feature edges (or corners in 2D) cause the traction (the surface force) to be discontinuous?
Can we define the stress tensor at the…
Naghi
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0
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What is the fastest possible slot car
What is the fastest possible slot car one can build? What are the limiting factors?
Obviously, we have to require that the motor is aboard the car and that it's propelled by the wheels (we don't want a particle collider or a rocket), and we want a…
Haukinger
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0
votes
2 answers
Faster car drifting (motorsport) when using limited slip vs welded differential
I have been drifting RWD (rear wheel drive) cars for some years now. I tend to think about every engineering solution that other drivers use and how does it work before applying it to my car.
What has been baffling me from some time now is: Why…
Tomasz Sulkowski
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0
votes
1 answer
How to calculate the maximum starting traction force for a train with multiple carriages?
Suppose I have a convoy composed of the following elements:
A locomotive with 4 driven wheelsets (2 wheels per wheelset and therefore 8 wheels).
$n$ carriages with 2 wheelsets each.
Assuming the weight is uniformly distributed on the wheels,…
mickkk
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1 answer
What is the average energy loss due to rolling friction in contemporary motor vehicles?
Around what percent of energy provided by gasoline is lost as heat due to rolling friction in vehicles? Is this number higher for larger vehicles likes trucks than smaller vehicles like bikes?
Ultimately, I want to know if energy loss due to ground…
ARJ
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-1
votes
1 answer
What is the minimum frictional force required for a vehicle to operate smoothly, retain traction, and prevent any skids?
I am not looking for a specific number of course. I know that it may perhaps vary with different vehicles. However, I'm trying to figure out how to theoretically calculate the minimum necessary frictional force. In other words, what variables…
ARJ
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