1969 Corvette

[joevenzon]

I updated this wiki page:
http://wiki.vdrift.net/Car_parameters#Engine
with details on the fuel consumption parameter.

The actual fuel consumed each second (in units of liters) is the fuel-consumption parameter times RPM times throttle (throttle is from 0.0 to 1.0, where 1.0 is full throttle).

So if Fs is the fuel consumed each second (in liters), Fc is the fuel-consumption parameter, RPM is the rpm, and T is the throttle:

Code:

Fs = Fc * RPM * T
Fc = Fs / (RPM * T)

Because we have the miles per gallon parameter (which we'll call MPG), and Fs is in units of liters per second, we need to convert between the two by adding a parameter MPH for speed (in miles per hour), so:

Code:

MPG / MPH = Fs * 3600 * 3.785
Fs = MPG / (MPH * 3600 * 3.785)

We can plug that in above, and:

Code:

Fc = MPG / (MPH * 3600 * 3.785 * RPM * T)

So if your car gets 12 MPG highway and at 70 MPH your RPM is 3000 and your throttle to maintain that speed is 0.3 (random numbers I pulled from the air), then:

Code:

Fc = 12 / (70 * 3600 * 3.785 * 3000 * 0.3)
Fc = 1.398e-8

So... try that value. :-) Someone double check my math!

[kidrock]

thank you for that. your math checks out ok :wink: :wink: i will use this. i am still waiting on my activation on the corvette forum so it will take some time (activation is moderator done :evil: :evil: ) will get back to ya on this. thanks again joe.

[kidrock]

right rpm wrong speed. try 55Mph :wink: :wink: its 1.779e-8

[xTs]

I would say that i want to modell this car for an opensource game, which aims to be a realistic sim.

Then ask for links or someone who owns that car and is willing to help you. (If you find one, you might get everything. Pics from the interior, sounds, etc.)

[kidrock]

So far still no answer on the corvette forum. im leaving to malta (europe) august 2nd and my week i get back is pretty tight so i really hope i can get this done soon...

[xTs]

The good thing is: We've got plenty of time

Have fun on Malta!

I hope i can visit it someday, too.

[kidrock]

Its an amazing place! i love going there. is ANYBODY going to model this or what?

[joevenzon]

I say you should go for it! :-)

http://wiki.vdrift.net/Car_modeling_tutorial

[kidrock]

I will try and upload whatever i get.
Edit: Just worked 8 hours and i got a rounded Box!! yay im almost done!
(that edit was fake lol) Seriously it will take me some time. i have modelled some planes before (for xplane 8) but that was much easier (more tubular) so this is going to take some time. also how will i get the measurements right? (i will figure it out)

[kidrock]

Im giving up here. ive been fiddling with this thing for almost 12 minutes and i cant even get the wheel well done on the porsche. (keep messing up) it may be that im tired as well as the fact that im just not a blender guy (hey can i somehow do this is flash? i make some MEAN stick figures :o :o ) (you should see my stick-mobile!) i will try again tomorrow when im not so tired. (i bet a real pro would be done by now). i will give a status update tomorrow. im going to work on sleeping for now... zzzzzzzzzzzzzzzzzz... (to be continued) :mrgreen:

[bugsyv]

No, I think it would even take "a real pro" several working hours to make a high-quality model of this sort. I work in the CAD software development industry so I have access to many modeling programs, and I have tried many times to learn several different packages including Inventor, Rhino, Blender (many times), and wavefront ( very briefly ). The only one I ever achieved much proficiency with is a little-know package called IronCAD ( because it was my job)... so I have learned that modeling takes a certain amount of talent that some people just don't have.

It's a lot harder than some people think.

That's not gonna stop me though

[joevenzon]

I prefer modeling in Wings3D instead of Blender, and then move my mesh over into Blender only when I need to do texturing & final export... but Wings3D is tough to learn, too... it just makes more sense to me (or the way my brain works in 3D) for some reason.

[kidrock]

I could probably do blender if i put my head to it, but i just have trouble working with making the body because there are so many different parts. for example in the porsche tutorial the 2 peices on top of the front wheel give me trouble because i dont know which mesh to start out with. (cube is to wide and i cant narrow it enough) i will try the other tutorial and it will hopefully be more descriptive.

[kidrock]

EEEEEEEEEEEKKKKKKKKKKKKKK!!!!!! Leaving to malta august 2nd!! i havent been able to work on nything the past 4 days and i am not going to finish this soon! about to check the vette website. will update when possible.

[kidrock]

Bad News: Nobody gave out info on he 'vette forums.
Good News: Somebody on the 'vette forums stated that an entire restoration book can be ordered for free from GM if a VIN is provided.
Great News!: My cousin works at GM and he can probably get me one without a vin. Oh do i love old cars