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Home > General > Towing with SD4 |
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ad210358 Member Since: 12 Oct 2008 Location: Here and There Posts: 7464 |
I found that 1st 2nd and 3rd in auto was fine with changes happening about 2100rpm but from then on mine seemed to want to change up at around 3000 to 3500rpm so resulted to going into command shift after 3rd for much more civilised towing experiance. After having a manual in the past I think the gearing is slightly higher with the auto box normally 70mph was 2000rpm but now at 70mph yout only turning just over 1800rpm so 6th is now more for flat work with a pull on the stick to maintain 60 for the hills. Consumption is strange though at the weekend on the way down to Dorset 150 miles and the end result was over 21.7 but on the way back was barely over 19 More than happy with it though nothing towing passed me on the hills. |
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26th Apr 2011 8:01 pm |
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chicken george Member Since: 05 Dec 2007 Location: N. Yorks Posts: 13289 |
At work At home "I can't always believe facts I read on the web" - Charles Dickens winner by default of the tractor vs caravan race |
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26th Apr 2011 11:43 pm |
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1STFREELANDER Member Since: 14 Feb 2010 Location: lONDON Posts: 196 |
I have a 160bhp TD4 and tow a 1600kg swift, consumption varies between 21 and 24mpg, I think it depends on wind direction and if you are in a hurry and stick at 60ish or a more sedate 50. Being a square box the consumption will increase expotentially to the slight increase in speed.
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27th Apr 2011 3:41 am |
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Big Dave Member Since: 22 Nov 2009 Location: Yorkshire Posts: 1055 |
AD if you can't stay in 6th for hills on the motorway I'd be worried, I never drop out of 6th in Command when towing, regularly up to 2 tons and it never slows down! Mine: 2012 Golf GTI Edition 35
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28th Apr 2011 10:35 pm |
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DaveS Member Since: 03 Jan 2008 Location: N Yorks Posts: 217 |
Hi mate, I heard a different angle, in that we should not concentrate too much on command shift. The auto is so good that it decides the optimum gear (for mechanical longevity perhaps not economy) so we should not change it up too much. Of course an exception in my case is if you are on a long flat road then it sometimes needs a shift up to cut the revs. I personally would not take a Devon / Somerset type Hill in 6th.
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28th Apr 2011 11:14 pm |
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ad210358 Member Since: 12 Oct 2008 Location: Here and There Posts: 7464 |
It may go over in 6th if I wanted to make it to lug but I prefer to keep it in the torque band. I am only towing 1500kgs but the trailer is not very aerodynamic as it has a large frontal area but if it was a Iffor Williams flat with two tons on it would be different. Most of the gadiants I can take in 6th but hills such as the drags up to J37 M1 Northbound or the Southbound drag up to Tibshelf no way in 6th. |
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29th Apr 2011 10:33 am |
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Big Dave Member Since: 22 Nov 2009 Location: Yorkshire Posts: 1055 |
Fair enough, I haven't actually towed a large-frontal-area'd-van...usually a track car and spares! I agree with the junc 37 drag on the M1, it's near me and tests the torque of a vehicle. Freelander can hold, he-hem, more than 70 whilst towing up that hill (so I've been told ) in top.
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29th Apr 2011 11:43 am |
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chicken george Member Since: 05 Dec 2007 Location: N. Yorks Posts: 13289 |
Google translation "The caravan is basically a huge air brake and costs loads of lost fuel economy. never mind the effect on my carbon foot print. Also I know every inch of UK's motorways intimately as I go so slowly I get time to count the cats eyes, I should sell it and embark on proper holiday" At work At home "I can't always believe facts I read on the web" - Charles Dickens winner by default of the tractor vs caravan race |
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29th Apr 2011 12:57 pm |
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ad210358 Member Since: 12 Oct 2008 Location: Here and There Posts: 7464 |
I reckon you may be surprised at the amount of drag the frontal area creates I try to keep the speed around the 60 mark and it can be difficult to hod it their as it does tend to creep up a bit if your not watchful perhaps if you were to be coming up that bank at the plus 70 mark you have also have it singing well in the torque band where as on mine when in 6th at 70 it is ony turning over at a slow steady 1800rpm. |
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29th Apr 2011 2:53 pm |
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Big Dave Member Since: 22 Nov 2009 Location: Yorkshire Posts: 1055 |
Good point...I forgot how slowly the engine's turning at 60... Mine: 2012 Golf GTI Edition 35
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29th Apr 2011 5:38 pm |
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chicken george Member Since: 05 Dec 2007 Location: N. Yorks Posts: 13289 |
60 vaners resort to kph, real drivers use mph. always ask a vaner which 'currency' he is talking At work
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29th Apr 2011 11:06 pm |
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ad210358 Member Since: 12 Oct 2008 Location: Here and There Posts: 7464 |
60 vaners |
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30th Apr 2011 6:42 pm |
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