There's many different paths to the same point. From what I've found, limited cavitation hasn't been an overall detriment. It depends on when and where the cavitation is occuring, but over high frequency bumps, I've found it to help things rather than hurt them. Yes, it does act as a series...
Well, I don't know if you could say the absolute pressure falls to zero. That's over-stating it to some extent. The pressure only has to go below the vapor pressure for whatever temperature you're operating at.
A lighter fluid will produce less of a pressure differential across the piston for...
I'm a fan of all things in moderation. I think there is a place for KPI, scrub radius, caster, mechanical trail, etc.
The balance between KPI and caster is touchy, but I think in a lot of cars it comes down to the camber while steered. KPI tends to add positive camber to the laden tire while...
Listen to Greg. You're snipe hunting.
The mass centroid axis is a folly that Carroll Smith popularized on racecars, I think in Tune to Win. While I have a huge amount of respect for his work, the old man was just plain wrong on this one. Depending on what you are using it for, a good C.G...
Good picture STE.
I think you actually kinda hit the nail on the head. They're real good at making tires bald. I've no real doubt that the trailing arm layout was a compromise between 'better that the awful thing we've been selling for the last 25 years' and $$$.
At best a Mustang is about...
I just grabbed my Ohlins manual. It looks like the problem was that I was mis-quoting them. Hey, I said I had slept since I last read the book, give me a break.
Here's the example it gives. How many 0.15mm shims to make the same force as a single 0.30mm shim?
(0.30 / 0.15)^3 = 8
It takes...
In back to back tests, I've always leaned towards the big stack of thin shims. Drivers seem to use the words, 'progressive' and 'smooth' when giving feedback. I think that STE's 'digital' comment is spot on.
I don't try to prop the car up with the shocks, that's just not how I approach it...
Hey STE,
I'm going to both agree and disagree with you.
I'm fairly sure the Ohlins manual says that it takes something like 7 0.15mm shims to equal the stiffness of 1 0.30mm shim. I've slept since I read that book, so all bets are off.
Getting a certain damper curve is a highly subjective...
I know I've looked for the same thing, but not had much success. There is one thing I've found.
http://www.shimprogram.com/index.php
This guy, Kevin, has written a program to compare relative stiffnesses of 2 different shim stacks. It's interesting, but not really in depth enough for me to...
I've only played with scrub radius by itself once on a car, and that was with hub spacers. We were going for track width, but we were getting it essentially with wheel offset. A 10mm change didn't change the steering effort at all. It didn't seem to affect handling either. I think we had...
Thank you. I thought exactly the same thing! I remembered it being used on an Audi in the DTM. I even ran around the 'net a little to try to find it, but gave up.
I think the change in KPI is a pretty big gain for a performance car. When you put a wide tire and a lot of camber on a...
Lord, I'm a glutton.
Greg,
What are the ranges of A.S. that you have measured? Any ideas why the designers chose these values?
While I agree there is no 'hand-waving' involved, there are a series of compromises when designing nearly anything. It would be intersting to see the...
