2009-12-11 snapshot

[Phathry25]

Which reminds me. When is the official MX Simulator Ride day?

[twentythreemx]

anyone mind posting up their suspension settings with the new setup? Trying so hard to get it dialed in but cant. just got the game a few days ago so havnt had much time getting it set up the way it was before.. thx

[MOTO94]

I cant stand the new changes and my settings. I was twice as fast before. Call me crazy...

[Phathry25]

I'm assuming that if you leave your comp/rebound where it was, and set the new adjustments to 50 you'll be right where you were at before...

[Prologue]

The static force is important but I am betting the problem is in the compression damping. The valving systems in forks have different characteristics at different speeds (I know you know this, jlv). I don't know what the characteristics are that you have put in but it could be worth thinking about (max strength, shape of curve). A valving editor would sidestep this issue nicely - one that is able to adjust damping versus fork/shock travel speed and another versus stroke location. We could tune all that right out.

Actually, the fork dynos I've seen tend to be pretty linear. Here's a KTM 250 SXF dyno from MX Tech. Positive velocity is compression.

http://mxsimulator.com/junk/wpvsshowa.jpg

The only position sensitive damping most forks have is the bottom out circuit which is only for the last inch or so.

How hard is it to get linkage ratios for all of the bikes? is it something freely available or something you need to research?

I also agree it is too easy to bottom out the front forks considering I have seen 2 mechanics and james stewart busting their asses just to get the holeshot button going

You can take a pretty good guess on the link rate from a good photograph. You would need to know the exact lengths and pivot locations for each link.

The holeshot device isn't a good analogy. It will take about 350 lbs of force to compress the fork halfway, so it's no wonder they would need big James to help. Your body weight is pretty small compared to the forces generated while riding.

It does look pretty linear in that range. But I am wondering if the scale doesn't reach far enough - 20 in/sec doesn't seem very fast considering you could hit 3 whoops or so per second with plenty of gap between em. I can't say for sure though, I don't have any data on what the actual value is, just speculation.

Also, the speed on the

[MOTO94]

I'm assuming that if you leave your comp/rebound where it was, and set the new adjustments to 50 you'll be right where you were at before...

Ive tried that, and the front end just seems so spongy, i cant get it to plant and settle anymore. Do you use the front brake when exiting corners?

[jlv]

Try 50 for the spring rates, 0 preload and 0 oil level. That will be closest you can get to the old settings.

[MOTO94]

Thanks, ill try that next.

[MOTO94]

Im testing on backyard sx, i can normally run like 0:50 flat and the fastest possible i can run right now is like a 1:04. I think its so much harder to ride with these settings. What kind of laps are other people turning on backyard sx?

[jlv]

Where are you having trouble?

[Tyler 258]

I actually go faster with the new settings. Suspensions way better.

[Pumaxcs]

I was hoping I could ride myself back into shape but, these suspension thigns are killing me. It's either to stiff and I wash out everywhere or the to soft and coming in and out of corners the fully compress then I end up doing a flip.

[MOTO94]

Perfect way to describe it puma, i didnt know how to put it into words.

It's either to stiff and I wash out everywhere or the to soft and coming in and out of corners

[Garasaki]

Perfect way to describe it puma, i didnt know how to put it into words.

It's either to stiff and I wash out everywhere or the to soft and coming in and out of corners

Well duh tune it out.

Too stiff - spring too stiff or compression damping too high (probably both)

Too soft - try tuning the fork oil level

I'm way faster with the new settings (after finding a setup). im actually disappointed - sections that were previously very hard, I'm now way overjumping.

[MOTO94]

im actually disappointed - sections that were previously very hard, I'm now way overjumping.

Thats not neccesarily a good thing, and the reason thats happening is becuase of the preload settings. And ive played with a million different settings i just cant get it right. And the fork oil in this game if i remember reading right only controls the amount of air in the fork leg, not viscosities and what have you. The "air spring" only even effects the suspension at the end of the stroke anyways, and from what ive been noticing the end of the stroke is not where im having problems. Its like it goes through the stroke either to fast or too slow. What are your settings garasaki?