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Pukcip
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Joined: 31 Dec 2007
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 Posted: Wed May 07, 2008 2:12 pm Post subject: General Question |
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| I'm curious as to how everyone determines their best cruising speed for their F150. I have a theory on the subject and have always used it to set up a speed when I'm on the highway. It doesn't always get the best mileage -- that's not the question. The combination of engine, tranny, tire size, tire pressure, differential ratio, road surface, etc, effect the overall cruising speed. I define the cruising speed as driving on a highway or Interstate, obviousely not too fast or too slow. Just the speed that feels right for the vehicle. So how do you decide you are at a good cruising speed for your vehicle? |
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herbzford
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Joined: 03 Sep 2006
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From: Ponoka, Alberta
Truck: 2000 Ford F-150 Sport 4x4
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| Posted: Wed May 07, 2008 3:00 pm Post subject: |
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| Like you said it all depends on all those factors. I usually set my cruise at 124km/h, about 78mph. I get decent fuel economy at that speed and the truck just runs well for some reason. |
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POWERUPP
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Joined: 04 Mar 2008
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From: Wa. State
Truck: 07 F-150 XLT 4WD S/Cab 5.4L
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| Posted: Wed May 07, 2008 3:13 pm Post subject: |
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Hi Pukcip, good question. Tests have shown driving 10mph faster than the speed limit increases fuel consumption by 20%. +20mph increases to 25%. Gas consumption at different speeds should be taken into consideration, especially on long trips. Also cruise control helps keep the motor constant on flat roads. I try to split the difference and run 55-65mph in OD. Smooth and quiet. Hope this helps, POWERUPP. 
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Last edited by POWERUPP on Wed May 07, 2008 4:13 pm; edited 1 time in total |
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Pukcip
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| Posted: Wed May 07, 2008 3:54 pm Post subject: |
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| Oops! I hit the wrong key. See below.
Last edited by Pukcip on Wed May 07, 2008 4:00 pm; edited 1 time in total |
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Pukcip
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| Posted: Wed May 07, 2008 3:58 pm Post subject: |
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| herbzford wrote: | | Like you said it all depends on all those factors. I usually set my cruise at 124km/h, about 78mph. I get decent fuel economy at that speed and the truck just runs well for some reason. |
I agree when you said the truck just runs well and I think the feel is the key.
Here's how I do it. Once I get up to a safe speed on any given road I give the accelerator a slight punch. If the truck jumps then I hold that new speed. Then I repeat until the slight punch on the accelerator just gives me more engine noise but no jump in speed. Then I back off just a tad and hold that as my cruising speed. |
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Chris74
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Joined: 21 Jan 2008
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From: Smiths Falls Ont. Canada
Truck: 2008 FX4 Crew Cab
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| Posted: Wed May 07, 2008 3:59 pm Post subject: |
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| that sounds like a pretty good plan.....I think I'll try that. |
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POWERUPP
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Joined: 04 Mar 2008
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From: Wa. State
Truck: 07 F-150 XLT 4WD S/Cab 5.4L
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| Posted: Wed May 07, 2008 4:23 pm Post subject: |
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| Hi guys what kind of RPM/speed are you seeing? Thanks, POWERUPP. |
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Tallf150
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Joined: 31 Dec 2007
Posts: 273
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From: New Jersey
Truck: 2004 Ford F150 Super Cab
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| Posted: Wed May 07, 2008 7:14 pm Post subject: |
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| I just stay a mile or two per hour under what I think the cops would give me a ticket for and hope I don't get stopped. LOL |
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crzyjunyer
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Joined: 15 Apr 2008
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From: jacksonville, al
Truck: 05 f150 xlt supercab 4x4
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| Posted: Wed May 07, 2008 7:21 pm Post subject: |
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| i stay with in 5 over speed limit and set cruise there - local state trooper told me common rule (not policy) for them is under 5 over - nothing, 5-10 usallly warning (unless you are an ass- his exact words), 11-24 over is auto ticket - and 25 and over usually have reckless driving with the ticket
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catmechanic07
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From: Virginia
Truck: 05 FX4 F-150 4x4
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| Posted: Wed May 07, 2008 10:15 pm Post subject: |
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| Tallf150 wrote: | | I just stay a mile or two per hour under what I think the cops would give me a ticket for and hope I don't get stopped. LOL |
LMAO! Me too. Be glad most of you dont live in VA! We got the Freaked up new ticket laws. Improper lane change.......$$$$$$$$$ It goes on your record, have to pay extra for insurance, and extra per year just to have a lic. at the DMV. What the Hell?
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crzyjunyer
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From: jacksonville, al
Truck: 05 f150 xlt supercab 4x4
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| Posted: Thu May 08, 2008 6:08 am Post subject: |
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| catmechanic07 wrote: | | LMAO! Me too. Be glad most of you dont live in VA! We got the Freaked up new ticket laws. Improper lane change.......$$$$$$$$$ It goes on your record, have to pay extra for insurance, and extra per year just to have a lic. at the DMV. What the Hell? |
that is why i love bama - imporper lane change, tail lights out, and all kinds of stuff like that is still just and excuse pull you over to see about a DUI - they usually only give tickets for it if you are a jerk to them
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catmechanic07
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From: Virginia
Truck: 05 FX4 F-150 4x4
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| Posted: Thu May 08, 2008 8:27 pm Post subject: |
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| Commonwealth state............horse crap if you ask me! |
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