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Post by danie on Feb 13, 2010 7:01:22 GMT 2
Does anyone knows what difference in fuel consumption a roof rack will cause on a Lada ?
Interesting test results on a Nissan X-trail 2.cDi has been published in the Leisure wheels - January edition :
Roof rack with spare wheel and jerry cans:
Average fuel used over 97.1 km route: 8.38 litres. Average fuel consumption: 8.63 litres / 100 km.
Empty roof-rack:
Average fuel used over 97.1 km route: 8.25 litres. Average fuel consumption: 8.49 litres / 100 km.
No roof-rack:
Average fuel used over 97.1 km route: 7.02 litres. Average fuel consumption: 7.22 litres / 100 km.
According to the test report "the extra drag created by the roof-rack was very evident,especially when the speed was anywhere above 80 km/h."
Bear in mind that the 2 liter Nissan engine features the latest in diesel technology - including turbo,and common rail injection, and it delivers 110kw of power, and 320 Nm of torque at 2000 Rpm.
Danie
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Hercules
Veteran Niva Petrol Head
Lada - your peace of mind to take on the world's vast landscapes.
Posts: 785
Location: Gauteng
Town: Benoni
Registered: Oct 2, 2009 11:55:41 GMT 2
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Post by Hercules on Feb 13, 2010 9:38:44 GMT 2
Hallo Danie.
I did test the fuel consumption of my Lada a while ago with the roofrack. The test were as follow;
No Roofrack;
Distance travel: 286 km , fuel used 28.88 litres. Average fuel consumption: 10.1 litres / 100km.
Empty Roofrack;
Distance travel: 327 km , fuel used 35.64 litres. Average fuel consumption: 10.9 litres / 100km.
Loaded Roofrack (130kg);
Distance travel: 235.4 km , fuel used 29.89 litres. Average fuel consumption: 12.7 litres / 100km.
The test were done on open tar road at an average speed of 98.6 - 99.7 km/h and a wind speed of less than 5km/h in different directions and ambient temp of +- 24 degrees.
The test shows that the roofrack make a difference on fuel consumption, this the reason I remove my roofrack when not in use as I use my vehicle for daily travel to work and back. The extra wind drag and handlind of the Lada is very evident, specially in windy conditions. The loaded roofrack also has an effect on braking and engine temp aswell.
Hope this results is of helped.
Regards.
Hercules.
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Post by Ari Bezuidenhout on Feb 13, 2010 9:43:04 GMT 2
Hi
I think Hercules and Ronnie will be the right people to answer this question as Ronnie travelled broadly with a loaded roofrack and it looked in the pics as if Hercules only used his roofrack when necessary.
I always leave mine on so I haven't been able to see for myself.
Regards Ari
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Post by ronnie on Feb 13, 2010 11:45:13 GMT 2
Hi Danie,
It is a long time since I used the Lada laden for bush work, but Hercules sounds right, though I don`t remember going as high as 12.7L / 100KM. There again I was running far longer distances 600km mostly non stop. Even in deep sand at low speed I did not find myself using any more fuel than usual. That was with the Webber carb that ARI still has. Incidentally, the Webber was only marginally better consumption than the original but the motor was much sweeter running especially at idling.
Regards
Ronnie
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