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Aeneas posted on November 28th, 2024

Aeneas posted on November 20th, 2024

sidun10 posted on November 20th, 2024

NL2.2 has air resistance, especially at higher speeds. I’m pretty sure this is variable between coaster styles (not 100% sure) so if you want to get a 1:1 friction match in FVD with 2.2 it’s going to be damn near impossible if you’re building anything really above 100-200 feet I’d say. I personally use NL2 for my parameters, and with .24 friction in FVD I feel like the forces and speeds have been very close. So in my opinion using NL2 friction with .24 in FVD is the best option. However, someone else might have more insight into this than I do.

Thank you! This info helps a lot! The 0.024 m/m value in NL2 physics model, is it for wood or steel?

Ok, I tested the NL2 value for steel coasters and it seems to be at 0.026 m/m and 0.00002 m/s²....

So now I have the test refined a bit. I tested a distance of 200 m with start v of 45, 90 and 180 km/h. both for wood and steel and NL2.2 and NL2. The results are this:

	friction parameter (m/m)	friction coefficient (m/s²)

steel NL2.2 0.026 0.0001
wood NL2.2 0.017 0.0001
steel NL2 0.026 0.00002
wood NL2 0.017 0.00002

gregtakacs posted on November 30th, 2024

All good, they run alright on my setup except no motion :-)

OK good to hear. Good luck. Feel free to ask again.

All good, they run alright on my setup except no motion :-)

Sorry my 30 year old XP can't handle them.

They are:
https://nolimitscentral.com/exchange/park/95
https://nolimitscentral.com/exchange/park/1553

But there are others that look cool but don't work with motion because of the camera. I guess when the maker doesn't have a motion rig, there is little incentive to make it work with one :-)

Are these parks in the Exchange ?

Yeah, I'm not going to invest that kind of time into it :-)
I'm more into sim racing and flying, the roller coaster thing is just more of a novelty for me and the original included ones already exhaust me, I was just looking for some other ones based on real coasters I like and rode like the Hagrid's Motorcycle Ride or Space Mountain (neither of which work properly with motion)

U can use the proper script to make it work, kind of an experienced job (u need to know what u doing, to make it work)

Oh, you mean unless they use one of the built-in trains things just won't work? Makes sense if there is no physics engine behind it. So there is no fixing them then. Kind of unfortunate. Is there any way to know which coaster will and will not support motion and genuine coaster experience and which ones are for viewing only without downloading them? It would be nice to be able to search the ones I care about :-). Thanks for the reply!

This is only with custom train. Depending on the script is used.

Hey, I just donwloaded a few coasters and I find that they don't have actual ride view option for me, only an External Ride View camera. When this happens my motion rig does not move at all which is disappointing to say the least. I guess for most this is not a problem sitting stationary but is there any way to "fix" these bad releases so I can actually ride them with motion like I can the ones that came with the game?

Aeneas posted on November 20th, 2024

sidun10 posted on November 20th, 2024

NL2.2 has air resistance, especially at higher speeds. I’m pretty sure this is variable between coaster styles (not 100% sure) so if you want to get a 1:1 friction match in FVD with 2.2 it’s going to be damn near impossible if you’re building anything really above 100-200 feet I’d say. I personally use NL2 for my parameters, and with .24 friction in FVD I feel like the forces and speeds have been very close. So in my opinion using NL2 friction with .24 in FVD is the best option. However, someone else might have more insight into this than I do.

Thank you! This info helps a lot! The 0.024 m/m value in NL2 physics model, is it for wood or steel?

Ok, I tested the NL2 value for steel coasters and it seems to be at 0.026 m/m and 0.00002 m/s²....

StillbornFleshlight posted on November 24th, 2024

Hello everyone! I was wondering if there was a way to make the default type for roll(when designing force sections) something other than quartic? for some reason it always defaults to this, and i would prefer cubic. Any ideas?

Good question! And yes, I rarely use quartic, too...

Ejector air, defying gravity
The lap bar holds defying gravity
My hat is lost for good

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Hello everyone! I was wondering if there was a way to make the default type for roll(when designing force sections) something other than quartic? for some reason it always defaults to this, and i would prefer cubic. Any ideas?

Oh, ok, so I guess you're reimagining it quite a lot, because you really threw me off with the 3 way switch and multipass launch.
Anyway, good luck with the project, and if you follow tutorial and need any help feel free to comment there!

Thank you guys so much for the help. And to answer your question: it is the now defunct Kingda Ka at Six Flags Great Adventure.

sidun10 posted on November 20th, 2024

NL2.2 has air resistance, especially at higher speeds. I’m pretty sure this is variable between coaster styles (not 100% sure) so if you want to get a 1:1 friction match in FVD with 2.2 it’s going to be damn near impossible if you’re building anything really above 100-200 feet I’d say. I personally use NL2 for my parameters, and with .24 friction in FVD I feel like the forces and speeds have been very close. So in my opinion using NL2 friction with .24 in FVD is the best option. However, someone else might have more insight into this than I do.

Thank you! This info helps a lot! The 0.024 m/m value in NL2 physics model, is it for wood or steel?

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Aeneas posted on November 19th, 2024

Hi all,

I'm not satisfied with the friction data here. I tested some with a standard track in FVD++ and NL2. Results is that for the NL2.2 physics model, the friction values for steel coaster seem all the same and for woodies, too. Woodies are significantly better (weird? Why? Because steel on steel instead of steel on plastic? Or the 2 wheel vs 1 wheel set?). But the changes of train length do something, obviously, because the center of mass over a lift hill slightly drops the longer the train is. The additional mass pushing against the air does not seem to do anything. Also unrealistic, right?

Yet, we have not 1 but 2 values that need leveling if you want to export FVD++ tracks to NL2. And this is where I'm struggling a bit. Currently, it seems that 0.03 m/m for friction parameter and 0.00006 m/s² friction coefficient does work quite well for steel coasters. I'm mostly designing giant air-time machines on the B&M Hyper design. But it seems that the data is still not exact. Sure, one parameter is that a train does come with a wandering center of mass, while FVD++ does not considers this. But is this all? Did I hit the 0.03 and 0.00006 well or is there in fact something other at work?
Same for woodies, how is it there? The friction parameter must be somewhere in the range of 0.022 m/m. For the friction coefficient, no clue.

Does someone have insights on what the 2 values for different coasters are for NL2.2 physics model?

Thank you!

Cheers!

NL2.2 has air resistance, especially at higher speeds. I’m pretty sure this is variable between coaster styles (not 100% sure) so if you want to get a 1:1 friction match in FVD with 2.2 it’s going to be damn near impossible if you’re building anything really above 100-200 feet I’d say. I personally use NL2 for my parameters, and with .24 friction in FVD I feel like the forces and speeds have been very close. So in my opinion using NL2 friction with .24 in FVD is the best option. However, someone else might have more insight into this than I do.