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![]() | Home > Technical > Sport mode on auto box. |
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razmabaz Member Since: 20 Feb 2011 Location: Cambridgeshire Posts: 246 ![]() ![]() ![]() |
I was thinking similar things EYorkshire - but I came to the conclusion the overtaking was in true Landy fashion, offroad and therefore nil consequence to/of oncoming vehicles! ![]() Freelander 2 TD4 SE Auto MY08 - Santorini black |
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russben Member Since: 03 Dec 2010 Location: lancashire Posts: 314 ![]() ![]() ![]() |
Land Rover Owner International magazine did a 'real world test' of the SD4 HSE in the March 2011 issue (pages 70, 71) and found the quick up-changing auto box resulted in "jerky" progress when driving up hills or in slower moving traffic. The article author said he preferred the 'sport' mode in these circumstances.
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The Doctor Member Since: 09 Jul 2010 Location: Gallifrey Posts: 4615 ![]() ![]() |
Well said. LRO have found what I have always said about the auto being jerky. If people prefer to buy it still then fair enough but I want to be in control rather than the car and the smooth manual is perfect. £1500 less at list price, less to tax, more economical, smoother and the driver is in control. ![]() LOT (Lord of Time) - University of Gallifrey |
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alex_pescaru Member Since: 12 Mar 2009 Location: RO Posts: 4642 ![]() |
The box's software is designed for performance, not confort.
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The Doctor Member Since: 09 Jul 2010 Location: Gallifrey Posts: 4615 ![]() ![]() |
Actually, having the auto box takes the ultimate skill out of it. Proper off road experts could manage it. As for slip back, the HDC holds the position (gradient release control?) so that the driver can smoothly get the clutch control right and set off nice and steady avoiding burn. Remember the Defender 90 is apparently the ultimate off road vehicle and they have a manual box. In any off road situation with any car, the outcome can depend on the skill/experience of the driver. LL.B (Hons) - University of Derby LOT (Lord of Time) - University of Gallifrey |
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Big Dave Member Since: 22 Nov 2009 Location: Yorkshire Posts: 1055 ![]() ![]() ![]() |
Doctor, Gradient Release just stops the car from lurching before HDC takes over when stopped on a hill, it's not Hill Hold Assist as some manufacturers call it.
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The Doctor Member Since: 09 Jul 2010 Location: Gallifrey Posts: 4615 ![]() ![]() |
On the LR day, we were heading up a hill when we stopped and when I released the brake nothing happened. The LR bloke said that the HDC/Gradient release would stop the car from rolling back until power was applied.
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alex_pescaru Member Since: 12 Mar 2009 Location: RO Posts: 4642 ![]() |
Sorry, but seems that lately these LR "specialists" mess up the info quite a bit and the bad thing is that they pass this knowledge to students too. The RR, RRS and Disco don't have japanese boxes from Aisin Warner, like FL2... They have german ZF boxes. Totaly different. ZF 6HP26, six speed auto for RR, RRS and Disco. A new 8 speed auto box is fitted to RR from 2010, the ZF 8HP. |
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The Doctor Member Since: 09 Jul 2010 Location: Gallifrey Posts: 4615 ![]() ![]() |
Interesting. As you say "specialists" ![]() ![]() LOT (Lord of Time) - University of Gallifrey |
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Dave Member Since: 04 Jul 2007 Location: Somewhere Near You Posts: 2666 ![]() ![]() ![]() |
[quote="The Doctor"]On the LR day, we were heading up a hill when we stopped and when I released the brake nothing happened. The LR bloke said that the HDC/Gradient release would stop the car from rolling back until power was applied.
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The Doctor Member Since: 09 Jul 2010 Location: Gallifrey Posts: 4615 ![]() ![]() |
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druand Member Since: 07 Sep 2009 Location: south ayrshire Posts: 825 ![]() ![]() ![]() |
Dave, I will be in your neck of woods this weekend, scrutineering on Friday night at John Clark BMW, HQ Thistle Altens, Saturday Service area Edzell. In May Fintray Hill Climb. All FL2's (3) Gone
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Big Dave Member Since: 22 Nov 2009 Location: Yorkshire Posts: 1055 ![]() ![]() ![]() |
The smoothness on the big vehicles will be to do with weight, and probably linked to the fact that ZF are one of the biggest names in the auto trans business. The 'box on the D3/4 suited my driving style slightly better than the Freelander. Mine: 2012 Golf GTI Edition 35
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alex_pescaru Member Since: 12 Mar 2009 Location: RO Posts: 4642 ![]() |
Please let me comment, if I may, on this... Yes and No on both issues. The gearbox on my lady's VW Polo is made by the same Aisin Warner company. And more than 80% is the same box - a little less clutch plates and different software. The gear changes on Polo's autobox are a dream. Absolutely no judder, ever, on any gear and no matter how you press the gas pedal. You have the impression that you drive a CVT box. If you wont look at the tachometer, you could say that there is no gearchange. No torque interruption, nothing. Only when the gearbox is in the warm-up stage, there are slight, almost imperceptible judders, but once the transmission oil is over 50 deg. C and the box is out of the warm-up stage, the gearbox is delightful. I've put the girl to drive the car and, with the diagnose equipment hooked-up, I've monitored the box's parameters. You have no idea how many things happen inside to give the driver that smooth feeling. So, even if it's an Aisin box, and the car is small in size and weight, by a carefull tune of the software you can make the box change without torque interruptions and judders. Conclusion: For different applications and different goals, there are different tune-ups, performances and feelings. |
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