BRZ trackday at Laguna Seca

[CSG Mike]

It's all about mounting position. You MUST give the phone/logger/antenna clear vision of the sky. I've seen plenty of Solos lose GPS lock because it's mounted in a bad spot.

Heading home soon to look at that data...

[orthojoe]

Originally Posted by CSG Mike

It's all about mounting position. You MUST give the phone/logger/antenna clear vision of the sky. I've seen plenty of Solos lose GPS lock because it's mounted in a bad spot.

Heading home soon to look at that data...

I hear you, but I've heard many guys complain about HLT dropping an entire session even with clear vision of the sky. It's not just GPS either. The wireless connection with obd2 leaves much to be desired and will get disconnected and drop out as well. Also, add in that the data is interpolated to 20hz when in reality it is recording at 1hz (speed with which it logged with my kiwi wifi unit). 19 out of every 20 data points are fake. For the money, HLT is fantastic, but people should know about it's limitations.

I've never lost a single lap or session with my Solo. It's been rock solid for me. My gopro remote on the other hand....

Looking forward to your analysis.

[CSG Mike]

Quick and dirty analysis.

T2, you're sawing at the wheel. You turn in, ease up, and then turn in more. I'm assuming you're taking a double apex, based on the data, but I may be wrong here. Don't take a double apex. Instead, miss the first apex by 10 feet or so, and focus on hitting the second apex and track out. You'll be able to enter the turn faster and carry more speed. Exiting T2, you're hesitant on the gas. You press it, and then lift, and then press again on your final exit, but you hesitate before going WOT. Don't gas until you're 100% sure you don't need to lift, and eliminate that hesitation. Also, roll onto the gas; it'll help with stability.

Based on data, you MAY be able to enter T3 without brushing the brakes. Also, you're coasting through the majority of the turn. Try to roll onto the gas, and power out of the turn. Your steering is slowly easing off, but you're not on the gas, meaning you still have lateral grip left through the last 40% of the turn.

T4, definitely don't need to brake here. On your fastest lap, your entry and minimum speeds are higher here, and you made a lot of time. You can lift for security, but the earlier youre on the gas, the better. If you drop 2 on the left, lift, and safely get back on. This is where a lot of people hook right.

T5: You're pretty solid here, but you can get on the gas earlier as you exit. Focus on carrying more speed through the turn; youre easing up on the steering quite early as you're exiting, similar to T3.

T6: This is the scariest turn, IMO. You have tons of speed to gain here. The spike in your lateral G is the dip at the apex. This turn should be doable at at LEAST 70 mph, and probably more like low 80's. Be careful. Inner red berm will DESTROY parts. If you drop on track out, same as T4: be careful. Don't get trapped in the gravel.

T9: you ease into the turn, and ease out, but you're giving it some maintenance throttle through the turn. THis is good. Try to sustain it and slowly roll onto it to WOT, instead of lifting. Lots of time to be had here.

T10: go faster. Brush the brakes if you need the confidence, but you can enter with just a lift. You can carry a LOT more speed through here. The data shows you turning in, and then easing up when you realize you have a lot of grip, and going straight to WOT, and exiting WOT. T11: Scary, but go in faster. Steering is abrupt here, and you go straight to WOT.



Analysis was done based on your 4 fastest laps, rather than just the one pictured.

[orthojoe]

Thanks a million, Mike!!!! You confirmed some of my suspicions and taught me new things too.

One thing I'm not clear on: are you saying turn 4 can be done flat out in stock trim? If you can, I'm not sure ill have the guts to. Too many cars have been lost there.

[CSG Mike]

I lift slightly for T4 in my s2k, but I don't exactly have a lot of seat time at MRLS, and like everyone else, I want to drive my car home (especially considering how far it is for me!)

I've improved since the last time I've been to MRLS, so I think I can go flat this year, and wouldn't hesitate to go flat there with the BRZ... as always, YMMV

[GTM_Challenge]

Turn 4 flat works in Forza4 and GT5

[orthojoe]

Originally Posted by GTM_Challenge

Turn 4 flat works in Forza4 and GT5

Lol. I'll try that.

[Doborder]

Originally Posted by CSG Mike

Quick and dirty analysis.

T2, you're sawing at the wheel. You turn in, ease up, and then turn in more. I'm assuming you're taking a double apex, based on the data, but I may be wrong here. Don't take a double apex. Instead, miss the first apex by 10 feet or so, and focus on hitting the second apex and track out. You'll be able to enter the turn faster and carry more speed. Exiting T2, you're hesitant on the gas. You press it, and then lift, and then press again on your final exit, but you hesitate before going WOT. Don't gas until you're 100% sure you don't need to lift, and eliminate that hesitation. Also, roll onto the gas; it'll help with stability.

Based on data, you MAY be able to enter T3 without brushing the brakes. Also, you're coasting through the majority of the turn. Try to roll onto the gas, and power out of the turn. Your steering is slowly easing off, but you're not on the gas, meaning you still have lateral grip left through the last 40% of the turn.

T4, definitely don't need to brake here. On your fastest lap, your entry and minimum speeds are higher here, and you made a lot of time. You can lift for security, but the earlier youre on the gas, the better. If you drop 2 on the left, lift, and safely get back on. This is where a lot of people hook right.

T5: You're pretty solid here, but you can get on the gas earlier as you exit. Focus on carrying more speed through the turn; youre easing up on the steering quite early as you're exiting, similar to T3.

T6: This is the scariest turn, IMO. You have tons of speed to gain here. The spike in your lateral G is the dip at the apex. This turn should be doable at at LEAST 70 mph, and probably more like low 80's. Be careful. Inner red berm will DESTROY parts. If you drop on track out, same as T4: be careful. Don't get trapped in the gravel.

T9: you ease into the turn, and ease out, but you're giving it some maintenance throttle through the turn. THis is good. Try to sustain it and slowly roll onto it to WOT, instead of lifting. Lots of time to be had here.

T10: go faster. Brush the brakes if you need the confidence, but you can enter with just a lift. You can carry a LOT more speed through here. The data shows you turning in, and then easing up when you realize you have a lot of grip, and going straight to WOT, and exiting WOT. T11: Scary, but go in faster. Steering is abrupt here, and you go straight to WOT.



Analysis was done based on your 4 fastest laps, rather than just the one pictured.

Mike is breaking it down turn by turn what my butt was telling me when I was a passenger. You could be powering out a bit more and sooner.

In Joe's defense, the weather was not the best and constantly changing throughout the day so some of his hesitance regarding powering out of turns was warranted due to track condition.

I do agree that turn 3, 4, he does not brake into the corner. I think that was just habit coming from a much more powerful car (Spyder)

I agree with Turn 6... scary

[orthojoe]

Originally Posted by Doborder

Mike is breaking it down turn by turn what my butt was telling me when I was a passenger. You could be powering out a bit more and sooner.

In Joe's defense, the weather was not the best and constantly changing throughout the day so some of his hesitance regarding powering out of turns was warranted due to track condition.

I do agree that turn 3, 4, he does not brake into the corner. I think that was just habit coming from a much more powerful car (Spyder)

I agree with Turn 6... scary

Shouldn't you be working right now? Wait....

[CSG Mike]

Originally Posted by Doborder

Mike is breaking it down turn by turn what my butt was telling me when I was a passenger. You could be powering out a bit more and sooner.

In Joe's defense, the weather was not the best and constantly changing throughout the day so some of his hesitance regarding powering out of turns was warranted due to track condition.

I do agree that turn 3, 4, he does not brake into the corner. I think that was just habit coming from a much more powerful car (Spyder)

I agree with Turn 6... scary

OT, but do you know a "CosmosMpower" with a GTR? He's trying to call me out on "providing bad instruction" to another GTR owner.

Back on topic: MRLS has always had CRAZY weather swings both times I've gone. 50's, totally foggy, damp in the morning, and 90's in the afternoon... so I totally get the hesitation. More confidence will come with more seat time, as will more comfort with the rear wagging (depending on car setup).

[Doborder]

Mike,
I do not know CosmosMpower, but your instructions seems spot on to me. I will say though, I have to brake a lot sooner in a GTR than in a BRZ simply because I am hauling around a lot more weight and more speed.

Joe,

I am at work...

Busted goofing off at work... Dang...

[Touge Monster]

Hmm I was advised to stay wide right out of 8b going into 9 kinda scary at first but much faster and sets up the apex better. I definitely wanna run a transponder my next time out so I can nit pick. As for turn 2 I'm sure a single apex would be much faster just been having too much fun trying takumi it through there lol but I'm sure my tires will thank you.

[CSG Mike]

Exiting fastest doesn't always equate to a faster lap time. This is where data analysis comes in; you have to learn what to sacrifice. Everything is a compromise

[orthojoe]

Originally Posted by CSG Mike

as will more comfort with the rear wagging (depending on car setup).

THAT is why I wanted to get this car.