I got the tail to wag a few times going into 3rd with VDC off... You just got to take it easy unless you want to have fun.
|
|
LinkBack | Thread Tools | Display Modes |
11-16-2010, 11:15 AM | #46 (permalink) |
A True Z Fanatic
Join Date: Apr 2010
Location: Long Island NY
Posts: 3,277
Drives: 2010 Z Coupe M6 SPT
Rep Power: 21 |
I got the tail to wag a few times going into 3rd with VDC off... You just got to take it easy unless you want to have fun.
__________________
2010 Base+Sport 6spd: Stillen G3, FI Non-Resonated CBE, FI Non-Resonated Test Pipes, UpRev Tuned, Custom 24R Oil Cooler, JDM Rear Fog-OEM Harness. ???Whp ???WTQ (Will find out come spring time) |
11-16-2010, 11:33 AM | #47 (permalink) |
A True Z Fanatic
Join Date: Apr 2010
Location: West Covina, Ca
Posts: 1,052
Drives: 3million Z
Rep Power: 17 |
Like stated a tire change won't do much as these stockers are pretty well balanced.
coming from driving a 240sx without any driving aids for a few years these RWD platforms like to kick out a bit when you are a little to aggressive with it. It requires a bit a finesse and a whole lot of getting used to! -Scott
__________________
Providing you with OEM/JDM & aftermarket performance Check us out at thenismoshop.com
|
11-16-2010, 01:04 PM | #48 (permalink) | |
A True Z Fanatic
|
Quote:
__________________
2013 Cadillac V-Wagon, RIP Z |
|
11-16-2010, 01:19 PM | #49 (permalink) |
A True Z Fanatic
Join Date: Jul 2010
Location: Newport Beach
Posts: 3,900
Drives: 2010 370Z/Saab 900se
Rep Power: 432 |
I can always get VDC to kick in when I punch it at any point in second and many times while I am in third gear as well, but a lot of this is due to my base open differential I believe. Wider stickier tires will definitely help in many ways, that is my plan to gain some grip next year.
__________________
-320whp / 259wftlbs- SP Rays -- RE-11s -- SpecialtyZ Tune -- Swift Springs -- Stillen 25R Oil Cooler -- Stillen G3 Intakes -- Berk HFCs -- F.I. 12" CBE -- Stillen Sway Bars -- Es14 Spring -- INGS+1 lip -- CF Spoiler -- GTR Start Button -- VLED Parking Lights -- PWJDM V2 shift knob |
11-17-2010, 01:52 AM | #50 (permalink) |
A True Z Fanatic
Join Date: Jul 2010
Location: Virginia
Posts: 1,134
Drives: 2009 Touring Sp Nav
Rep Power: 17 |
I've seen the VDC light up accelerating at WOT on the 1-2 and the 2-3 in fairly warm weather (75?) with tires warm after 15 minutes of curved driving using the paddles.
For a low (ish) torque car, it does pretty good
__________________
2014 Cayman S PDK Sport Chrono White/Black Was 2009 370Z Touring Sport+Nav 7AT Metallic Black/Persimmon Was 1991 NSX Auto Black/Black |
11-17-2010, 02:03 AM | #51 (permalink) | |
A True Z Fanatic
Join Date: Jun 2010
Location: SWMO
Posts: 4,454
Drives: 2019 CX5 GT Reserve
Rep Power: 7627 |
Quote:
EDIT: FRONT: OE rate: Linear 74 N/mm (422 lbs/in) REAR: OE rate: Linear 79 N/mm (450 lbs/in) Found this. Not really that stiff. I dunno why these cars are so traction-challenged. With their weight, balance, power, and tires, they shouldn't spin this easily. I noticed the same thing in my friend's 'vert. Hitting it in 2nd would light up the VDC. Rediculous. Last edited by ImportConvert; 11-17-2010 at 02:13 AM. |
|
11-17-2010, 05:39 PM | #52 (permalink) |
Base Member
Join Date: Nov 2010
Location: western Oklahoma
Posts: 164
Drives: Black Cherry Sport
Rep Power: 15 |
You need to think about gear ratios. for the manual 2nd gear is 2.324 w/ a rear final drive ratio of 3.69. multiply those to get your absolute gearing = 8.576. Multiply that time the torque the engine is producing. 270lbs @the crank at 5200rpm. This makes a grand total of 2315.3 lbs/ft so I guess I that is were tire slick comes from.
3rd gear is 1.624x3.69= 5.992x270=1617lb/ft. the 96 trans am w/ 6sp manual makes 325lbs@2400 (according to MSN.auto) 3.42 final ratio (there was also a 2.73 rear ratio) and 1.78 ratio second gear. make total torque multiplation of 1978lbs@ peak torque in second gear. If you hit it hard and are above 2400 you will have less torque. I know theres torque numbers aren't real world numbers but they are the best I have to work with. And it is more about the principal then the actual figures. Last edited by samb03; 11-17-2010 at 05:41 PM. |
11-17-2010, 07:00 PM | #53 (permalink) |
A True Z Fanatic
Join Date: Jul 2010
Location: Virginia
Posts: 1,134
Drives: 2009 Touring Sp Nav
Rep Power: 17 |
The 7AT has even more effective torque due to its gearing (I have a spreadsheet I haven't posted on it yet...)
Since the torque curve is so flat, the car makes around 200 rwt from around 2500 RPM to 6500 RPM, so the 7AT has 3300 in 1st, 2141 in 2nd and 1370 in 3rd versus the manual's 2800 in 1st, 1713 in 2nd and 1196 in 3rd. With the heavy flywheel/rotational mass of the 370Z's engine, that makes wheelspin at shifts even more likely. Even assuming a cf of 1.5, seems like we have enough force to spin.
__________________
2014 Cayman S PDK Sport Chrono White/Black Was 2009 370Z Touring Sport+Nav 7AT Metallic Black/Persimmon Was 1991 NSX Auto Black/Black |
11-17-2010, 07:19 PM | #54 (permalink) | |
A True Z Fanatic
Join Date: Jun 2010
Location: Long Island
Posts: 5,059
Drives: slowwww
Rep Power: 29 |
Quote:
__________________
[09][MB][6-Spd MT][Touring][Stillen Gen III][K&N][Borla CBE][Evo-R] |
|
11-17-2010, 09:27 PM | #55 (permalink) | |
A True Z Fanatic
Join Date: Jun 2010
Location: SWMO
Posts: 4,454
Drives: 2019 CX5 GT Reserve
Rep Power: 7627 |
Quote:
|
|
Bookmarks |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Wheel hop vs wheel spin | cossie1600 | Track / Autocross / Drifting / Dragstrip | 4 | 10-30-2010 03:59 PM |
Anyone have problems with wheel spin? | TheWeatherman | Nissan 370Z General Discussions | 22 | 08-27-2010 11:54 PM |
A Treatise on Spin Control | Sharif@Forged | Track / Autocross / Drifting / Dragstrip | 5 | 01-04-2010 09:16 PM |
Annoyed with wheel spin, quick starts, cold tires | spearfish25 | Wheels & Tires | 6 | 10-03-2009 10:03 AM |
Tires spin without squeal when broken loose | spearfish25 | Wheels & Tires | 15 | 04-17-2009 10:39 PM |