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Thread: Speed vs fuel consumption

  1. #61
    Join Date
    Apr 2012
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    South Australia
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    771

    Speed vs fuel consumption

    Quote Originally Posted by trout1105 View Post
    Seriusly????

    The ONLY time that extra speed (momentum) becomes a "Safety" factor is when driving on soft sand, claypans or damp black soil country so that you don't become bogged in a remote area.
    ANY increase in speed will increase the risk of injury or death and this is a proven Fact.
    As far as road rage goes, Well people that are prone to road rage should NOT be allowed behind the wheel in the first place.
    Yes seriously... there is data to back it up.

    Perhaps turn off you bias for a bit and do some research.

    Granted driver training in Australia would need a damn good shake up!

    Road rage is a catch-all for frustration, aggression and includes the frustration leading to taking increased chances or risks through others actions.

    The data supports higher speeds, raised limits, shorter travel times. What it then doesn’t support is revenue.
    Cheers
    Tombie

    Gone - D1 AZZKIKR - 5.0L Supercharged with the lot
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    D4 MY11
    - Just about the way I want it.
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  2. #62
    Join Date
    Apr 2012
    Location
    South Australia
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    771
    Back to fuel economy - D4, full armour, full rack, awning, roof mounted recovery tracks, bullbar etc..

    640km round trip Thursday - average speed 112km/h according to trip journey on GPS.

    Confirmed fuel consumption (bowser vs dash readout) 10.1L/100km.

    Sure I could have saved $8.96 and slowed to 80km/h and then driven for 8 hours (vs 5.7 hours) and been more fatigued - but that just wouldn’t be sensible would it.
    Cheers
    Tombie

    Gone - D1 AZZKIKR - 5.0L Supercharged with the lot
    Gone - Tombraider Defender - Lara
    Gone - D2 TD5

    D4 MY11
    - Just about the way I want it.
    D90 MY15 - Just about the way Mrs Tombie wants it.
    New 110 Defender - Satin Green HSE - On Order

  3. #63
    Join Date
    Jan 1970
    Location
    Logan
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    20,248
    Several thousand ks of towing the camper from Brisbane to Lawn Hill, Karumba and Coen, including plenty of unsealed roads, have confirmed our 110 is happiest at 2000-2500 rpm, which means changing down to 5th below about 80 kmh, as 6th is only for highway cruising. Fuel economy is best in that rev range.
    2009 Defender 110 2.4. ARB bulbar, Ironman winch, Safari snorkel, Steinbauer chip, AP HD clutch, Lightforce spots, larger tank, Off Road Systems drawer, Traxide 160 controller, Tekonsha brakes, Mulgo seat runners, Uniden UHF, Nuggetstuff seat corners, breathers, Polaris GPS.

  4. #64
    Join Date
    Jan 2017
    Location
    Geraldton WA
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    4,912
    Quote Originally Posted by Tombie View Post
    Back to fuel economy - D4, full armour, full rack, awning, roof mounted recovery tracks, bullbar etc..

    640km round trip Thursday - average speed 112km/h according to trip journey on GPS.

    Confirmed fuel consumption (bowser vs dash readout) 10.1L/100km.

    Sure I could have saved $8.96 and slowed to 80km/h and then driven for 8 hours (vs 5.7 hours) and been more fatigued - but that just wouldn’t be sensible would it.
    So what were you towing during this trip?
    If not towing the extra 20kph makes very little difference in fuel consumption, However If you are towing something substantial that extra 20kph will make a Huge difference in fuel usage.
    Also unless you were travelling in the NT your "average" speed of 112kph indicates that you were breaking the law by exceeding the 110kph maximum speed limit
    You only get one shot at life, Aim well

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  5. #65
    Join Date
    Apr 2012
    Location
    South Australia
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    Speed vs fuel consumption

    Quote Originally Posted by trout1105 View Post
    So what were you towing during this trip?
    If not towing the extra 20kph makes very little difference in fuel consumption, However If you are towing something substantial that extra 20kph will make a Huge difference in fuel usage.
    Also unless you were travelling in the NT your "average" speed of 112kph indicates that you were breaking the law by exceeding the 110kph maximum speed limit
    Towing the 2.4t Cat will cost an extra $28.00 for the same trip (I’ve done it before in this vehicle and remember the extra fuel burn).

    Again - Saving that bit of coin and spending an additional 2 hours behind the wheel is not worth the perceived saving vs the Fatigue.

    I always set my Cruise speed ‘optimistic’ which in this case was 116km/h. I never even get a cursory from the HWP as I pass them and I passed about 7 on this run.
    Must make me completely evil and irresponsible Speed vs fuel consumption

    Fuel is the cheapest part of motoring, and I’m not giving away life in exchange for economy saving. In fishing terms - 2 hours more on the water vs 2 in the tow vehicle is a no brainer....
    Cheers
    Tombie

    Gone - D1 AZZKIKR - 5.0L Supercharged with the lot
    Gone - Tombraider Defender - Lara
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    D4 MY11
    - Just about the way I want it.
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  6. #66
    Join Date
    Oct 2011
    Location
    Fremantle WA
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    2,594
    Quote Originally Posted by Tombie View Post
    Back to fuel economy - D4, full armour, full rack, awning, roof mounted recovery tracks, bullbar etc..

    640km round trip Thursday - average speed 112km/h according to trip journey on GPS.

    Confirmed fuel consumption (bowser vs dash readout) 10.1L/100km.

    Sure I could have saved $8.96 and slowed to 80km/h and then driven for 8 hours (vs 5.7 hours) and been more fatigued - but that just wouldn’t be sensible would it.
    Hi Mike. So main good fuel consumption claims to fame are? I'd assume from previous comments that the Rocket Rod "chip" is one contender, plus being in SA the ground is reasonably flat.
    For the following post of $28 for towing the 2.4T cat, what does that translate to in L/100 km?


    Incidentally, from my experience, I suspect towing anything over 2/2.5T leads to exponential/geometric progressions in fuel useage with speed.
    Towtug Apr 19 D4 MY10 2.7 6 speed with LLAMS, long range tank and other goodies - for towing "The Brick"
    Bessie Aug 13 MY95 RRC LSE Vogue SoftDash with MY99 TD5 and 4HP24 transplant - in the LR garage since Apr 18
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  7. #67
    Join Date
    Apr 2012
    Location
    South Australia
    Posts
    771

    Speed vs fuel consumption

    With the Cat on the back cruising at posted speed limits yields 13l/100km.

    The run south is a series of continually changing ascents and descents.

    With the van (around 2t - it’s small) on the back from Melbourne we averaged 13.2l/100km cruising posted limits the entire way.

    Sometimes it’s just the aerodynamics of the combination that will do you in.

    Interestingly - with the Bimini up on the Cat we do better than with it down - the Bimini deflects the airflow rather letting it vortex around inside the hull inducing drag.


    My modifications are:
    Decat & custom exhaust.
    No EGR
    Remap

    When on highway towing left at normal height, when vehicle only I lower it on Llams and run -20mm
    Cheers
    Tombie

    Gone - D1 AZZKIKR - 5.0L Supercharged with the lot
    Gone - Tombraider Defender - Lara
    Gone - D2 TD5

    D4 MY11
    - Just about the way I want it.
    D90 MY15 - Just about the way Mrs Tombie wants it.
    New 110 Defender - Satin Green HSE - On Order

  8. #68
    Join Date
    Apr 2012
    Location
    South Australia
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    This is the combo.
    Cheers
    Tombie

    Gone - D1 AZZKIKR - 5.0L Supercharged with the lot
    Gone - Tombraider Defender - Lara
    Gone - D2 TD5

    D4 MY11
    - Just about the way I want it.
    D90 MY15 - Just about the way Mrs Tombie wants it.
    New 110 Defender - Satin Green HSE - On Order

  9. #69
    Join Date
    Jan 2016
    Location
    Netherlands
    Posts
    341
    Sorry, completely OT, is that a ham radio tower in the background there?

  10. #70
    Join Date
    Apr 2012
    Location
    South Australia
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    Quote Originally Posted by prelude View Post
    Sorry, completely OT, is that a ham radio tower in the background there?
    Regional. Tv antenna.

    There’s a nice HAM set up just up the road though.
    Cheers
    Tombie

    Gone - D1 AZZKIKR - 5.0L Supercharged with the lot
    Gone - Tombraider Defender - Lara
    Gone - D2 TD5

    D4 MY11
    - Just about the way I want it.
    D90 MY15 - Just about the way Mrs Tombie wants it.
    New 110 Defender - Satin Green HSE - On Order

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