How to calculate vehicle speed from engine RPM and vice versa

Suppose your motor vehicles speedometer not working and you need to know your vehicle speed for the given engine speed for a certain gear ratio. How you can do that , let’s see.. Say, Engine rpm= 3000 Gear ratio=1.5 Axle ratio = 4 Tyre size = 12 inch radius The formula for calculating vehicle speed …

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The Challenges of New Eco-Friendly Tech – Are Electric Cars Really That Green?

Increasing the focus on renewable energy sources is gaining more and more traction around the globe, and as consumers and the public gain a better understanding of how things like wind turbines work, as they continue to pop up on the horizon, it is easy to think that we are heading down the right path …

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Bolted Joint Design Calculation Example for Joint in Tension

bolted Joint Force Details

Properly designed bolted joint is extremely important for striking the balance between the cost and life of the joint. As a design engineer, for a good bolted joint design, for a given loading conditions and materials of the abutments, you have to basically select the following design parameters: Diameter or size of the bolt or …

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Worst Case Method Assembly Tolerance Stack up Calculation for Non-Symmetric Dimensional Tolerances with Example

Worst Case Assembly Tolerance Stack Up Calculation for Non Symmetric Tolerance

If you are wondering what is stack-up analysis/calculation, the answer is determining worst case scenario. Moreover, the problem can sorted out in early stages of design rather than undergoing prototyping and finding out the issue. We have already discussed how to do worst case method assembly tolerance stack up calculation for symmetric dimensional tolerances, in …

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DFMEA Creation Tutorial with Example

What is DFMEA? DFMEA is Design Failure Mode & Effect Analysis. It is the application of FMEA to a specific product/system in a disciplined manner that anticipates failures to prevent their occurrence in design.     FMEA is of  two types: 1)DFMEA 2)PFMEA (P – Process)   Let us go through the DFMEA creation tutorial. …

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