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Old 10-19-2016, 06:31 PM   #21 (permalink)
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Sweet.

I see join date in 201609, have you lurked enough to see the thoughts that echo through the ecomodder-sphere about box cavity/truncated boattails and Coanda nozzles? If not I can give a recap.

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Old 10-19-2016, 07:08 PM   #22 (permalink)
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Quote:
Originally Posted by Goober View Post
I just got back from my first trip with the new 2.8L Duramax Colorado, towing a 177 SE Retro and carrying a homebuilt camper on the truck which weighs 600lbs. Over the 700 mile trip, Salt Lake to Canyonlands and back I averaged 16.2 mpg. A similar trip with a 4.0L V6 Tacoma I averaged 12 mpg. The Duramax tows this so much better, never felt like I was taxing the engine like I was with the Tacoma. My daily commute I was averaging 20 mpg with the Tacoma and the Colorado averages 27.
So far so good, now figure out how to get the towing up to 20 and the daily up to 30. I would say you were doing good with the Taco at 20, if you can drive that easy I would have hoped for the Duramax to hit 30 as most people beat the EPA with a diesel. The towing increase is pretty substantial, maybe 20 is asking too much. Welcome aboard!
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Old 10-20-2016, 12:22 PM   #23 (permalink)
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Skyking correct about sharp edges. It ain't aero in that case. Crosswind handling is an enormous concern (safety) but even a steady minor wind is an FE problem.
The easiest aero RV is an older Airstream coupled to a good turbodiesel tow vehicle. And a pickup is a poor choice, overall, for that function. (The number of miles towing is almost always a third of less of annual miles).

As to the 2.8L Diesel report, the same loop traveled solo and a second time while towing (same speed and on cruise control at 60-mph) will give the percentage difference. A 40% drop is standard. But not very good (for purposes of this site). 40% highlights that attention to mechanical details is needed. As most are part of routine maintenance and/or combined rig lash up, it's a double win to search the details and fix them.

Even on brand new vehicles. Best to assume TT alignment is off, bearing preset and lubrication is wrong, and that brakes can be better adjusted than as delivered. Same for wheel balance. (Adding shock absorbers another worthwhile upgrade; and with Spring equalizers and wet bolts).

Tire pressure on the tow vehicle according to load, correct alignment (from FE perspective), tire/wheel balance and brake drag.

Same for hitch lash up. Big payment here. 90% of the time it's wrong. Bad for safety and for FE.

This is how one trends down to 30%. The rest is in trip planning. All stops planned a day in advance. Fuel, food, etc.

Last edited by slowmover; 10-20-2016 at 01:01 PM..
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Old 10-20-2016, 01:29 PM   #24 (permalink)
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The price is high but maybe they are paying that $15/hr min wage LOL.
That's only for companies operating within city limits; their website says this outfit is based in Woodinville.
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Old 10-20-2016, 03:28 PM   #25 (permalink)
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I suspect a two-person partnership could keep up with yearly production single-(double-?)handedly and not need to pay wages at all.

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