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There really is no substitute for proper test data, but for an ESTIMATE....

Fatigue Strength Coefficient(sigma'_f): Su + 345 MPa
Fatigue Strength Exponent (b): -(1/6)log(sigma'_f/(0.5*Su))...

Good input VFR. That is a good way to start looking at a muffler design. And if after looking at those rudimentary numbers a team decides to use an aftermarket pipe, then thats just dandy and good...

I don't need any high ground, thank you much. And I'm more than happy to answer any intelligent questions on the subject. But the original poster has not asked any and I only took exception to...

Ren, you're beginning to get the idea. My beef with your original statement was the unqualified use of "significantly", because I believe it places undue importance on the muffler when it came to...

Still calling it a lie. Sorry, but the stock muffler can flow enough air at high RPMs to produce 100hp will be able to flow enough air not to be the main restriction in a FSAE engine. In...

"Significantly"? More than a 20mm restrictor? Considering the stock muffler from a modern sportbike is good enough for close to 100hp, I fail to see the logic of your statement.

Is there a whitepaper detailing the fatigue solution methods so that this can be compared to other packages?

Sweet! Knew it would be something silly. So...what exactly is this going into?

Start by researching acoustic attenuators (or filters). Get familiar with the 3 main types band-pass, high-pass, and low-pass. And just because I know someone will bitch about it: Helmholtz.
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by exFSAE:
Agree on durability, but I don't see how the...

jd# hit it on the head. Iterate. I suggest a spreadsheet or some matlab action.

Pennyman, thats why I said "generally". The amount and type of welding and any post treatments to the frame can have a significant impact on the stiffness of the final structure. A lot of people...

I'm not terribly familiar with the settings available in solidworks, but if you can make sure that the joints are not pin connections. If you have a node in the middle of a main tube then a pin...

Is all the hardware good? The injectors and connective bits? The injector sub-loom in good shape?

If you're getting spark then i wouldn't think the crank sensor is the issue. You might want to...

U cld ttly l@@k it up urslf. O is that jus 2 hrd fer u?

I apologize, I'm really not sure how today's jackasses misspell everything in "text speak".

Real version: quit being a lazy ass and do...

While including the a-arms and springs and everything is cool and such, for a static analysis they are unneeded.

For splines we used to have T-slot keyway cutters reground by a tool shop to match our spline specifications. Then it was just a matter of patience and an indexing table on the mill.

For a given alloy heat treatments will increase the yield and tensile strength at the expense of total strain capability. Are you sure you'd want to heat treat the material before bending? Why not...

Or you could contact one of the other German teams and ask them how they handled the situation.

That being said, there is Virtual 4 Stroke and I think one called Engine Analyzer.

However,...

Technically speaking, the rubber of the tire is a "crushable object". However, the wheel itself isn't designed to deform (or shouldn't be).

Your safest bet is to email the SAE for a rule...

Tom,

Its a bit early in the morning for me, but I'm going to take a crack at adding to this.

In order to accurately model the ATB effects of the Torsen (or Quaife) then you are unfortunately...

I think exFSAE is just trying to point out that not all engineering decisions involve just trying to optimize the performance numbers. Most of the time engineering has nothing to do with making some...

In recent times there has been at least one or two good sweeping corners that can last up to 5 or 6 seconds at speeds of up to 50mph. Yes, I have competition data that shows it. In these types of...

The r6 is generally seen as more rev-happy out of the box, with the cbr600rr seen as having a better midrange. On the stock bike, the RR is often noted for having "snatchy" fueling on initial...

Constrain the bottom link representing the lower a-arm. Use an angle driven approach and adjust the link representing the chassis by the amount of your roll angle. Solve your equations of motion to...