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prj
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« Reply #150 on: October 10, 2017, 10:31:30 AM »
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I found that the gen 2 is advertised to transfer 3200Nm to the rear. This means that the force between tires and ground is 10000N. This means 1000kg. If coefficient of friction is 1, means that 700kg weight rear + weight sift at launch may indeed be more or equal than 1000kg by which weight this 3200Nm is not enough to spin tires. WTF did I just read? I feel like some brain cells just died. Take your engine output torque and multiply by your trans ratio and you know exactly how much is going to the rear wheels... |
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Mikhail
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« Reply #151 on: October 10, 2017, 10:24:06 PM »
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WTF did I just read? I feel like some brain cells just died.
Take your engine output torque and multiply by your trans ratio and you know exactly how much is going to the rear wheels...
Yes I calculated that this car could spin four tires about 550Nm torque from engine if rotating masses not count. Some bright would calculate that what rotating masses reguire, probably about 100Nm more? Could assume that you prj surely have faced the haldex limited ability to transfer torque and maybe know solution for it? |
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turbojohan
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« Reply #152 on: October 12, 2017, 09:25:40 AM »
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I don't understand what you mean...
Do you have wheelspin of is your haldex clutch slipping?
I have 650 Nm and haldex has no problems, and good 255 tires help me to have minimal wheelspin.
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gt-innovation
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« Reply #153 on: October 12, 2017, 10:23:28 AM »
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I don't understand what you mean...
Do you have wheelspin of is your haldex clutch slipping?
I have 650 Nm and haldex has no problems, and good 255 tires help me to have minimal wheelspin.
I don`t believe that anyone understood here what is going on..As i wrote on top bad and short video quality and no visible power on the car to produce such issues.. |
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Mikhail
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« Reply #154 on: October 12, 2017, 09:55:50 PM »
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I don't understand what you mean...
Do you have wheelspin of is your haldex clutch slipping?
Look video at Reply #146. What is it? Should order china vcds hexcan to see wheel speeds and what is going on at the haldex. |
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turbojohan
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« Reply #155 on: October 12, 2017, 10:32:21 PM »
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that's really strange.
But why does your gear indication blink on dash?
Something is wrong with DSG comunication..
What DTC's do you have in DSG and engine?
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Mikhail
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« Reply #156 on: October 12, 2017, 11:02:57 PM »
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that's really strange.
But why does your gear indication blink on dash?
Something is wrong with DSG comunication..
What DTC's do you have in DSG and engine?
DSG can't go through the basic settings because idle is a little weak at the moment and start to oscillate when basic settings search the clutch bite. Engine and dsg has only the dsg unable to to do basic settings DTC. |
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prj
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« Reply #157 on: October 13, 2017, 12:22:17 AM »
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Yes I calculated that this car could spin four tires about 550Nm torque from engine if rotating masses not count. Some bright would calculate that what rotating masses reguire, probably about 100Nm more? Could assume that you prj surely have faced the haldex limited ability to transfer torque and maybe know solution for it?
Dude the haldex is AFTER the gearbox. You ever heard of the fact that the gearbox multiplies torque? The haldex can hold over 2500nm. |
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Mikhail
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« Reply #158 on: October 13, 2017, 12:55:32 AM »
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Dude the haldex is AFTER the gearbox. You ever heard of the fact that the gearbox multiplies torque? The haldex can hold over 2500nm.
I'm a little out of words now. I'm glad that you prj start slowly be in the same page. |
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Mikhail
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« Reply #159 on: October 25, 2017, 11:20:20 PM »
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YES! Snow! I hate snow, but likely the car won't break with winter tires and no traction.
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fknbrkn
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mk4 1.8T AUM
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« Reply #160 on: October 26, 2017, 12:30:25 AM »
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where are you from?
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prj
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« Reply #161 on: October 26, 2017, 04:15:10 AM »
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I'm a little out of words now. I'm glad that you prj start slowly be in the same page.
I think you need to watch your mouth and use your brain more. In 1st gear launch you have over 2000nm going to the wheels. Because you most likely don't have LSD's at front and rear axles, and because the car twists towards the engine rotation direction, and the whole car gets pushed back, you essentially have the 2000nm distributed over something like 1.5 wheels even with the haldex locked. Doing this calculation is pretty much impossible and useless. As for haldex locked or not - flash the haldex and modify the pre-control curve to give more initial lock. |
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« Last Edit: October 26, 2017, 04:16:51 AM by prj »
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Mikhail
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« Reply #162 on: November 12, 2017, 01:45:59 AM »
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flash the haldex and modify the pre-control curve to give more initial lock.
Any pointers how? Vcds shows 40bar, is this actual value or max what is shown? |
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prj
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« Reply #163 on: November 15, 2017, 04:53:04 AM »
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Any pointers how? Vcds shows 40bar, is this actual value or max what is shown?
No pointers. Buy a haldex tune or develop your own flash tools and reverse engineer the software. |
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Mikhail
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« Reply #164 on: December 02, 2017, 07:16:36 AM »
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Does 100 cell cat clear euro 4 limits (with e85)?
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« Last Edit: December 04, 2017, 12:18:04 AM by Mikhail »
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