 | Home > General & Technical (L663) > new with new Defender, so new with auto transmission! |
 
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| LR Nuts Member Since: 10 Aug 2022 Location: UK Posts: 1140  
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I was hoping the L663 would come with a manual option, but NO !
I'm not a driver, just a steering wheel manager, and sometimes NOT even that  |
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21st May 2024 10:34am |
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| Huwrhys Member Since: 27 Mar 2024 Location: Hornchurch Posts: 133 
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The more my car can take from me the better. I want it to take me to the pub and back please. 🍻 24MY D300 130 X-Dynamic HSE Santorini Black
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21st May 2024 10:38am |
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| jst Member Since: 14 Jan 2008 Location: Taunton Posts: 8049 
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I always go to neutral, saves TC longterm and helps keep gboxnoil cooler. Cheers
James 110 2012 XS Utility 130 2011 M57 bespoke Camper 90 2010 Hardtop 90 M57 1988 Hardtop |
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21st May 2024 5:09pm |
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| Huwrhys Member Since: 27 Mar 2024 Location: Hornchurch Posts: 133
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I’ve done about 400000 miles in my auto Land Rovers and Range Rovers and never had an issue with a gearbox. I’ve always left the gearbox to do its thing and never sat in neutral to spare the TC or the GB oil. If there was anything to be gained it should be in the handbook. It’s not. 24MY D300 130 X-Dynamic HSE Santorini Black
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21st May 2024 5:26pm |
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| jst Member Since: 14 Jan 2008 Location: Taunton Posts: 8049
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I am coming from an engineering background and had the same discussions with landrover when I worked for them.
I probably just tend to over think things. It's similar to sitting in a manual with the clutch at biting point and your foot brake on. One burns a clutch the other slips a tc. I am not saying the car can't do it I was just explaining my reasoning to my answer to a question that was asked. It's similar to reversing 3t up an incline. Car will do it in high, but its mechanically better to do it in low. Most do it in high, I expect your one of them. You go back to your owners manual and crack on. Cheers James 110 2012 XS Utility 130 2011 M57 bespoke Camper 90 2010 Hardtop 90 M57 1988 Hardtop |
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21st May 2024 9:06pm |
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| Huwrhys Member Since: 27 Mar 2024 Location: Hornchurch Posts: 133
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I think it possibly has the edge in this tbh. 24MY D300 130 X-Dynamic HSE Santorini Black
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21st May 2024 9:43pm |
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| lightning Member Since: 23 Apr 2009 Location: High Peak, Derbyshire Posts: 2825
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l always use low range when climbing steep gradients particularly when in reverse.
l always thought an automatic transmission was a fluid coupling and not actual clutches, unless it's in lock up mode. Can anyone tell me how the vehicle is held in "HOLD" mode. ls it the transmission or the brakes that hold it? |
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22nd May 2024 10:14am |
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| Retroanaconda Member Since: 04 Jan 2012 Location: Scotland Posts: 2655 
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The brakes.
I guess some of the folk in this thread are the ones I get stuck behind in a queue at roadworks or the like, with their brake lights glaring away. |
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22nd May 2024 10:27am |
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| TexasRover Member Since: 24 Nov 2022 Location: Paris Posts: 1079  
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Today I think all that hold stuff (manuals have it too) is done through the main brakes and the ABS system. Everything can be controlled by computers in most upmarket cars, which will inevitably also be their downfall. Software being the new rust.
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22nd May 2024 10:29am |
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| Huwrhys Member Since: 27 Mar 2024 Location: Hornchurch Posts: 133
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And they’re still looking at producing the autonomous vehicle. I have to say that the software in Pivi Pro seems pretty good so far. I’ve had no issues so far and it all seems quite rational in the way it’s laid out. As it is with most things it’s all very subjective and what appeals to me may not appeal to anyone else but I find it a huge leap forward in terms of how fast and accurate it is comparatively. My D4 was ludicrously slow and my FFRR (17 plate) was better but not quick by any means.
I have to say I don’t mind the hold and stop start functions. I turn off the hold when parking in a tight spot but find it useful when driving normally. 24MY D300 130 X-Dynamic HSE Santorini Black |
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22nd May 2024 10:41am |
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| stevemfr Member Since: 18 Sep 2022 Location: Strasbpurg Posts: 138
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I come from an engineering background as well and I really do not understand these comments. Comparing a torque converter at engine idle with the transmission in D held at a stop to slipping a clutch while holding the vehicle stopped is akin to comparing someone having a glass of wine with dinner to a full blown alcoholic: in both cases one is going to last significantly longer than the other. Torque converters are designed with a stall speed (the max input speed a TC will allow with a locked output) significantly higher than idle - usually in the 1500-2000 RPM range. At idle, the pumping action in the TC is insignificant which is why only light brake pressure is required to hold the vehicle at a stop. Yes, this pumping will warm the transmission fluid but wear, both on the fluid and mechanically are utterly and completely negligible. As a matter of fact, I'd put forth that the wear you are causing to the 2 or 3 solenoids actuated each time you shift from D to N and back puts your transmission at a marginally higher risk of an early failure than just holding the vehicle stopped in D with the brake. Slipping a clutch for a longer period causes significant mechanical wear and creates heat. Obviously neither is desirable. Simply put, the torque converter is designed for this type of operation. A clutch is not. You were quite candid about over thinking things...  
RRC 2Dr, RRC 4Dr, P38, and 2 L322s, 2 FL1s and a L663 on the way |
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22nd May 2024 10:51am |
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| Huwrhys Member Since: 27 Mar 2024 Location: Hornchurch Posts: 133
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What he said.
 24MY D300 130 X-Dynamic HSE Santorini Black |
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22nd May 2024 11:07am |
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| lightning Member Since: 23 Apr 2009 Location: High Peak, Derbyshire Posts: 2825
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Seconded.
l would still prefer a manual gearbox on my Defender though! Although the ZF 8 speed unit is very good. lt seems to get better with time, it used to sometimes lurch if you slowed in traffic than applied gas, as it worked out what to do, but the effects reduced over time until it stopped doing it completely. |
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22nd May 2024 11:19am |
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| Huwrhys Member Since: 27 Mar 2024 Location: Hornchurch Posts: 133
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I love an auto. Makes everything so easy. Manuals are for those who want to work at it. I had a manual Land Cruiser VX and it was ok but when stuck in traffic it was enough to make your left leg go numb. Queue assist rules which is both auto box and software working in harmony. Love it. 24MY D300 130 X-Dynamic HSE Santorini Black
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22nd May 2024 11:31am |
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