Recent content by venik

Yea thanks, I think it's a slightly different equation than the one in my first post. Which helps verify it. You got the same exact P2 as me, 48026.66. I'm glad you did it, because it's helpful when you arrive at similar answers 2 different ways it usually means you're doing it right. But...

Good, that's closer to what I'm looking for. Where did you get the $50,000 number? And the F = R/r(e^rt - 1) equation? What's the difference exactly between my F=te^rt and your F=(t/r)(e^rt - 1)? Why does yours have an extra r, and why the - 1? The problem I have with that answer though...

Hmm, that's an avenue I took once I believe, but that only tells us what interest rate is required for a non-variable principle to double in 1 year. If you change your equation from P = P(e^r - 1) to P1 = P2(e^r - 1) that would give the answer I have above. Let me clarify what I'm looking for...

Homework Statement This is a question I *might* have already got the answer to, I'd just like for someone very good with calculus and algebra to verify/answer the question themselves. To be more exact with the problem, we are putting 1 dollar (a variable principle) into a continuously...

This is a question I *might* have already got the answer to, I'd just like for someone very good with calculus and algebra to verify/answer the question themselves. To be more exact with the problem, we are putting 1 dollar (a variable principle) into a continuously compounded interest account...

I'm in an argument with some other car nuts, about whether volumetric effeciency can exceed 100%. I think that if you're getting a number over 100%, you miscalculated something or left a variable out. They think that a value over 100% is completely normal especially in turbocharged and...

That's what I was trying to say in my 2nd post, but you explained it much better lol. And now I am a little bit more experience in this subject so I'll state how my views have changed. The gears inside a transmission will spin at a maximum of 2000rpms. While the engine's crank shaft spins at...

hmm, i really don't think that the crank/gears spin fast enough to make any noticeable loss.

lol well can u shed some light on the subject then? is there a wet friction formula? why do trannies get hotter than engines if its all about the combustion? I was thinking since more distance is traveled there is more heat, since more heat can be made with the same -force by increasing the distance

me and my friend are having an argument about this. I say that because frictional force is less than or equal to the coefficient of friction times the normal force, and that neither the coefficient of friction nor the normal force can be increased while an engine is running(until it's oil is...

"I think the problem here is different mindsets. By and large, we are all engineers here and we think the numbers given out by a test instrument should mean something/be useful, repeatable, comparable, etc. If you view the dyno itself as some sort of competition for a score (whether an internal...

we don't want to find out the engine's horsepower on a dyno, most importantly we want to TUNE the car on a dyno, but as far as numbers go, hp to the wheels is more important than hp at the flywheel. As I've stated before we can increase what it's putting to the ground without changing the...

I'm studying petroleum engineering at UCSB one of the top engineering schools in california. I'm not ignoring anything you say, you are right in everything you say but you are looking over key elements. I'm aware of the constant speed dynos and those aren't made to measure power they are made to...

how much the car weighs is irrelevant on a dyno, anyways my buddy did 2 sets of dyno pulls on the same state-of-the-art dyno, one with a CFDS, and one with a stock DS. his max power was avg 302awhp with a stock DS, and avg 310 awhp with the carbon fiber DS. 8 awhp was freed up, with 15 lbs in...

Did you skip over the part about my lightweight rims freeing up DTL to the wheels? It's a fact and there are millions of Dyno charts to prove it. no it doesn't increase hp, it decreases the amount that is lost in moving an extra 100s lbs of rotating mass. Ive fought similar arguements such as...