Lotus Elise oversteer save - why and how?
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- Опубликовано: 16 окт 2024
- #trackmistakes #lotus #oversteer #sandown #save
What happens when you're too harsh on the steering at speed? Find out here, and why mid-engined cars like the Lotus Elise are harder to recovery from an oversteer skid than front-engined cars.
Post questions as comments!
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Track Mistakes #2 is up...same track, same corner, different car and driver, different result! ruclips.net/video/5oH3c3UPqeE/видео.html
Thanks for stepping through something that can be quite subtle.
Examining our own errors is something most of us don't do enough of, not just driving around a track!
I can think of a few times where not knowing why something occurred left me quite unsettled until the penny dropped and I could take steps to prevent recurrence.
Fortunately, the relatively low cost of various forms of data acquisition (including video) means we now have better opportunity for an evidence based look and tease out why underpants may have turned brown.
Robert, the phrase "polar moment of inertia" comes to mind... I learned on rear-engined Beetles on snow and dirt. Switching to front wheel drive was a challenge for a while. Would love to try a Posche Boxster on sand or gravel ;)
Yes indeed, thought about adding it in but decided not to. Re driving; surely the FWD would have been easier?
@@L2SFBC Hardest part with FWD was understeer when breaking loose, until I learned left foot braking ;)
Enjoyed this vid thx for posting. I like watching and analyzing spins and ooops and have posted a few (hundred) that I have witnessed or participated in myself. Good recovery and explanation!
Glad you enjoyed it, more on the way and the next will be a 911 at that same corner...different result, sadly. Would appreciate a share!
I do have a link to your vid in the description of my latest related vid. Looking forward to your future vids!
Unstabilized approach,
nose down entry? Uneven power through transition? Possibly a heel toe slip?
Excellent prompt and proportional recovery.
thanks Robert I am new to mid engined and that was a very well done piece of education (I've been involved in driver training for a looong time :))
Thanks what sort of training? Welcome to mid fun!
Good save my man. Loss Of Traction Usually Sideways
Love it hadn't heard that one before!
@@L2SFBC I saw "Leave Out The Unnecessary Stuff" on one of the forums
Great ELIOT. I am very Impressesd. You are a junior GENIUS!!
Wow, thanks!
Very interesting video! Thank you Robert!
The entry speed might have been a little bit to high as well no?
Decelerate earlier, come slightly back on the gas to settle the balance before giving more steering.
What are your tires and alignment settings?
Hi - entry speed was ok, was higher than that later and still made the corner. Really just harsh steering, I felt it at the time. Tyres were old road tyres, forget which exactly, and alignment was stock. That was my first trackday with that car :-) Braking then powering around the corner is too slow, but it is safer!
@@L2SFBC ok! Glad you kept the car in line! Nice safe!
thanks :-)
How about doing a follow up video on how the mid-engined car wants to be treated wrt accelerator and braking timing when cornering?
Good idea! Next one is Vision or lack of...
Man that gran Turismo game is so realistic!! Hehe. Looks like a lot of fun. Good old Sandown.
Check this out for real vs sim -> ruclips.net/video/Q8s5x9DtU0s/видео.html
@@L2SFBC another cool video. Lucky man to be able to drive the track at Bathurst.
Like an F1 car, once the rear steps out the weight at the rear pushes it around. As they say "like a pendulum".
4:50 when they say perfect 50:50 maybe they use the word “perfect” as “exactly” :)
Thinking about buying a new Emira. I have a Z and find it forgiving at the limit but I'm not sure I will be able to enjoy these cars if they are so hard to bring back at the limit.
Leave ESC on and that will solve it. Also choice of tyre makes a big difference. Finally learn the skill..that is part of the joy of the car it requires skill to drive and master.
@@L2SFBC thanks for the reply! Seems simple enough. And I love learning about cars and driving so def. Did you have ESC off when you crashed?
I did as my car doesn't have it and I saved the crash 😁
@@L2SFBC lol great save, beautiful car.
Thanks..not driven an Emira, but have other simiar cars and with the right tyres and training you'll be fine, or just let ESC handle it. Don't not buy the Emira because of that concern.
Mate I need you as a racing instructor
If you're in Melbourne come to our training days! Otherwise please share 👌
So why is 50/50 bad.
It's not so much it's bad, it's that it isn't the perfection it is claimed to be, even for RWD or AWD. When you brake, there's a load shift forwards so cars with a rear weight distro do better under braking. When you accelerate, you want weight over thed driven wheels so for RWD again rear weight is good under accel. For FWD, front weight is better, 60% on the front as you have the load transfer back under accelration. For AWD, 50/50 can work. So it all depends on the driven wheels and engine layout. The fastest cars in the world are mid-engined rear drive with 55-60% weight on the back...and that was proven when F1 cars switched to that layout and began beating the front-engined cars. And you can get 50/50 by putting heavy masses way over the nose and rear which is terrible dynamics. That's the short answer :-)
@@L2SFBC thanks mate. My 80 being 4wd has front weight of 1050kg and rear of 850kg with no driver or navi. So it’s certainly front heavy. This weekend I’m doing an Offroad speed race so I’m going to take the winch off to reduce the front weight some. I’ve moved a lot of weight to the rear like the 3 batteries and two spares. This weekend I’ll run one spare.
Weight distro is one of those things you can't say for sure what's best until you know a) the car details such as its drivetrain and b) the terrain it's driven on and c) how. Even how much power the car develops plays a factor, as does any aero downforce. One thing is sure though - less weight is good, always, with the sole exception being when towing.
Good save! Root cause appears to be turning while still braking, and exceeded available grip. See this video from Scott Mansell: ruclips.net/video/fonXd097vks/видео.html
Yes, familiar with the Circle Of Traction (or rather, oval) - explained here -> ruclips.net/video/dZ33KJ1cl_c/видео.html