Hello everyone, I am looking for the following information for project purposes. - Weight distribution of an L880K first gen 0.7 car - Suspension motion ratio (front and rear), - swaybar motion ration (front and rear) - Frontal area - coefficient of drag - coefficient of lift If anyone could provide this information I would greatly appreciate it. Thank you in advance
Im getting an l880k copen model made for a racing simulator Assetto Corsa and to make sure the physics are correct I need to have these values, Can't seem to find them on the Internet.
@AFR0N1 is your best bet, but I’ve never seen such detailed engineering information in the public domain for any car before. Weight distribution and coefficient of drag are often in the marketing material but is unlikely to be specific. Good luck anyway.
Although I know a lot about the Copen, the info you are asking for is the same info I've been unable to find for ages now. Maybe putting a model of the Copen into some sort of aerodynamics simulator would be able to calculate some of this for you. I'll still be on the hunt for info. Not massively helpful but I found this recently: I translated some of it and it basically just says lift at the rear of the new Copen was reduced by roughly 60% and that it is 6% better for something.
I have found this on a german site, but I cannot confirm that this is genuine information: Copen L880 0,382 drag coefficient 1,62 frontal area (in m² - I guess)
I just installed this mod on Assetto Corsa. I assume this is the one you were working on? Either way, it feels great to drive and accurate to the real thing (apart from it having a lot more power than factory) More on topic for this thread, I have found out the damping force (in NM) of the original dampers スポーツショックアブソーバーType-S And here's the spring rate A-SPECスプリング And finally anti roll bar アンチロールバー It was nice of Dsport to include a before and after of their suspension changes
I did some maths and I calculated the frontal area. I got 1.36m^2 I used this site to help me: Frontal Area Of A Racing Car - Easy Calculation | Your Data Driven
I know it's late but I think I have found the coefficient of drag for the L880 Copen. I did a bunch of maths and made some estimates to find what could be a likely cd number. I have found the number to be 0.48 How I found this: First I plotted a torque curve graph based on images from D-Sport and estimated the torque at each rpm at 500 rpm intervals. Then I calculated torque at the wheel using equations and data from Daihatsu spec sheet. I then used maths to estimate resistive forces such as rolling resistance and drag. Frontal area is from my post above. Tire rolling resistance is from here: Rolling Resistance "0.01 ordinary car tires on concrete, new asphalt, cobbles small new" After all of these calculations I had one thing left missing, the cd. So I used a number of 0.3 and when I did that I found that the Copen had lots of available remaining net force at speeds above 105mph which means, according to the math the Copen has a higher top speed than what it does in real life. Most of the data used I am sure is correct within a small margin and the tire is a very small part of the total resistive forces (less than 10% above 50kh/h) as calculated in the picture below: So I thought that the cd was most likely wrong, so I increased it until the net remaining force at about 105mph was about 0 and that's how I got 0.48 Here is a link to my Copen simulator: Copen Simulation - Google Drive Extra info: It is a .xlsx file. It is safe to modify any column marked in blue. Engine torque at any given point must be manually entered in each column and/or cell marked blue in each table. Everything else should be automatic. It can even estimate time to accelerate! There are multiple sheets. -L880K Copen (JP) -L880K Copen (UK) -L881K Copen (UK) -LA400K Copen (JP) -L880K Copen with LA400K Copen engine (Just a fun experiment) If you find something wrong with my maths please let me know so I can correct it.
