[///M TOWN]

Originally Posted by sl0m0

Great explanation of the counter steer and PhD.
Thanks a bunch. Passion Hopes n Dreams are usually more useful than the other PhD, especially in helping one not be a dingle like some with the other PhD.

Let’s be nice

Having a PhD is no small task

[Squidget]

Originally Posted by JackiePhD

As for the countersteer, that's my style hah. I tend to get on the full throttle early in order to maximize exit speed, and if the car gets sideways I'll simply countersteer to deal with that. If you have seen any older S2000 or Supra video of mine, you would see these few laps in the M2 is actually on the tame side for me!

Ha ha! I noticed you were pulling 1.3g lateral, which requires a bit of confidence to do your first time in a new car! Definitely more than I'd be willing to do! Thanks for the answers.

[Basketcase]

For anyone who doesn't know Jackies driving (I hadn't watched anything before the M2 video)... I just watched this:

And it is DEFINITELY worth the watch! Can't wait for the upcoming M2 content/build

[ourlee]

As for PhD, it was named from an Instagram comment/suggestion from a fan. We wanted to poke fun at the Asian stereotype (why you no doctor?) and also represent our values of "passion, hope and dreams". So that is where that's from!

You will never pay for beer in my presence. This is so great.

[///M TOWN]

Originally Posted by sl0m0

Didn't say it wasn't, but it doesn't give anyone the right to be a dingle.

I get it, but…

Just let that stuff go

Take an entirely different road

[bkkbp]

Jackie, your m2 video is epic!

wondering if could you pls elaborate more on what you mentioned in the vid that traction control in M2 is near to racing car?

[Squidget]

Originally Posted by bkkbp

Jackie, your m2 video is epic!

wondering if could you pls elaborate more on what you mentioned in the vid that traction control in M2 is near to racing car?

M traction control, as opposed to most other consumer traction control, adjusts wheelspeed using the engine instead of brakes. You need a peformance limited slip differential to pull this off, so most cars don't have it. Some race cars use engine control traction control. (I think this is banned in F1 now, though?)

Edit: I'm however not clear on the part where he says the M traction is matching front-to-rear wheelspeed rather than rear-to-ground wheelspeed. I've never seen that claim in BMW material, I'd like to know more about that feature, I'm gonna go look around.

[zero21]

Originally Posted by ourlee

As for PhD, it was named from an Instagram comment/suggestion from a fan. We wanted to poke fun at the Asian stereotype (why you no doctor?) and also represent our values of "passion, hope and dreams". So that is where that's from!

You will never pay for beer in my presence. This is so great.

The humility is infectious in the videos. You can't make that up. Instant fan.

[Squidget]

This is a good summary, I think.

The M Traction Control only manages traction (rear wheel slip), not stability like DSC or MDM (understeer/oversteer), it works like early Lotus traction controls or motorcycle traction controls by reducing power through ignition timing or throttle closure, not with the brakes.
DSC and MDM beyond a certain degree of yaw (lower with DSC, higher with MDM) brake the front wheels to prevent you from spinning, with MTC this does not happen, it only reduces the rear wheel power based on the level selected from 1 to 10.

I interpret this as: DSC/MDM will not let you spin/drift the car. MTC is more permissive, it will let you spin the car, the only thing it is doing is limiting your rear power to available grip.

Which I guess in practice means you can just keep your foot down without overloading the rears.

[1stM]

Originally Posted by Squidget

M traction control, as opposed to most other consumer traction control, adjusts wheelspeed using the engine instead of brakes. You need a peformance limited slip differential to pull this off, so most cars don't have it. Some race cars use engine control traction control. (I think this is banned in F1 now, though?)

Edit: I'm however not clear on the part where he says the M traction is matching front-to-rear wheelspeed rather than rear-to-ground wheelspeed. I've never seen that claim in BMW material, I'd like to know more about that feature, I'm gonna go look around.

Here is what Jackie said about M tracking control at 6:10 in this video.

[bkkbp]

Originally Posted by Squidget

This is a good summary, I think.



I interpret this as: DSC/MDM will not let you spin/drift the car. MTC is more permissive, it will let you spin the car, the only thing it is doing is limiting your rear power to available grip.

Which I guess in practice means you can just keep your foot down without overloading the rears.

thank you for the interpretation.

[JackiePhD]

Thanks guys for all the kind words! It means a lot, but we will always try to do better!

As for the M Traction Control, it's for sure similar in execution to what professional race cars (like the M4 GT3) would have. MDM still limits your maximum yaw rate, or how effectively how sideways you can get, before it intervenes and shuts down the party forcibly using the brakes. It's a delayed form of the stability control regular mode offered in the car. But the M TC DOESN'T reference off this yaw rate or sideways-ness, instead only looking at the difference in tire speed Rear VS front. If that difference is too much it *reduces* the engine output regardless of how much throttle input there is. But of course, if you get the car too sideways on entry, M TC WILL NOT save you.

Long story short, this allows a driver with a good understanding of car control to drive the car on that PERFECT slip angle more consistently and more easily, provided you set it up right. There is enough range where every driver can have their own happy and comfy setting, and can even adapt to different conditions on demand. It's why in my initial unveil video, I was so excited to try this out. Putting a similar system like this in a comparable sports car is a very very expensive venture, and we dreamed of having something like this is our Supra. For BMW to introduce this as standard on a car that retails for ~62, 65k, that's such a game changer.

Ok sorry I am just very passionate about this stuff, I could go on and on and on, haha.

[JackiePhD]

Originally Posted by Squidget

Edit: I'm however not clear on the part where he says the M traction is matching front-to-rear wheelspeed rather than rear-to-ground wheelspeed. I've never seen that claim in BMW material, I'd like to know more about that feature, I'm gonna go look around.

The material I referenced our *current* understanding of the system off of is here:

https://www.bmw-m.com/en/topics/maga...n-control.html

BMW had a fairly extensive video showcasing the system in use in an M4 G82. I drooled all over this before getting our own M2 hah

[bkkbp]

Many thanks, this is useful education!

I also found this video that explain and show the impacts of MDM, MTC just like Squidget Jackie did;

Also it would be nice to learn how do you setup on all these MDM/MTC when you put you M2 on track in your video, Jackie?

[Squidget]

And the same vid I posted earlier, too. (I just posted the blog that hosted it rather than the vid directly.)

WORRY NOT, THERE ARE NO BOTS HERE, FELLOW MEATBAG.

[erictrainer]

Jimmy Diggs in da house!!!!!

Subscribed...

[JackiePhD]

Originally Posted by bkkbp

Also it would be nice to learn how do you setup on all these MDM/MTC when you put you M2 on track in your video, Jackie?

Actually I specifically left in the "vehicle setup" time in our initial track test video, time stamp 1:20!
For our test, I did Engine/Steering/Brake in Sport, and Chassis in Sport Plus, DSC & MDM off, M Traction Control set to 5 and then later in the day M TC 4.

When I get a bucket seat in I will play with car at M TC 0, but without a seat or harness I can't be precise enough with my inputs to get to the absolute limit and minimize mistakes ha.

Edit: For the most part we set it up based on fear factor, since there is no numerical value of what these TC settings actually represent (as in percentage of wheel slip allowed, etc). If it's too easy and not scaring you enough, dial it down one click and try. If you're hanging on for dear life and feel like you're gonna lose it every corner, maybe go up one click or two.

[ourlee]

Jphd, do you know where farm road cliche corner is?

[Info@mad-us.com]

Really digging the New M2. Let the modding begin!

[Kevin_The_Clean1]

I'm glad the haters have been removed and/or banned so we can no focus on what this car can do & where its limits are...

[M2PDX]

Originally Posted by ourlee

You will never pay for beer in my presence. This is so great.

Where are you right now? I'm on my way!

[ourlee]

Lol 19709