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Old 04-27-2012, 10:25 AM   #61
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Re: Aerodynamics / MPG increase - up 16%

Quote:
Originally Posted by lornaschinske
RE: Drafting...

I would love to take a shotgun and shoot those idiots who draft behind me in the Class C. I can't see them unless I catch a glimpse of their car antennas. It's dangerous. What happens if they stop "quickly". Drafting puts you too close to see what is going on up ahead of the vehicle you are following. If I ever pull into a place and have some idiot who had been drafting me pull in to, I will definitely tell them a thing or two. Coming out west (the only long trip we have made with the bus) we had several morons squeeze between the bus (David driving in the lead pulling my Jeep) and the Class C (one almost took my front bumper off... I couldn't see their taillights!) and between the Class C and my Daughter who was following and pulling the food cart. It was worse around the bigger cities. If one of us had slung a tire, some moron drafting us would have gotten all the debris. Up side to traveling so slow was that most of the idiots didn't want to travel as slow as we were, so they didn't draft for long.

Like the sign in the back window of the bus says..."If you can't see my mirrors, then I can't see you".

If the vehicle behind you stops too quickly, you will just be going along on your merry way, and they will quickly fade from the picture.

My dad had a trucking company for over 30 yrs, and we always drafted the other rigs. never had any problem.. always kept ready for braking. I would do the same thing today, but first, the fuzzies frown on it, and second, now days you don't know what is driving the other rig.. most likely someone who has no idea of how to change a tire or fuel filter...
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Old 04-27-2012, 01:02 PM   #62
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Re: Aerodynamics / MPG increase - up 16%

Putting aside that it's a really stupid thing to do for all of the safety reasons, you are STEALING fuel mileage from the guy in front.
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Old 04-27-2012, 01:16 PM   #63
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Re: Aerodynamics / MPG increase - up 16%

Perhaps not. When two race cars draft, both can go faster. It seems to increase the efficiency of both vehicles. "Two engines propelling only one-and-a-half vehicles." But don't do it anyway.
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Old 04-27-2012, 11:54 PM   #64
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Re: Aerodynamics / MPG increase - up 16%

Draft close enough to toss a tow rope onto their back bumper and you can get great gas mileage!!!
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Old 05-02-2012, 11:49 PM   #65
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Re: Aerodynamics / MPG increase - up 16%

ive also heard from JEEP guys is that having the small "batam" trailer behind them on the highway would increase their mileage. wondering how true that would be for a skoolie and say a cargo trailer?
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Old 05-03-2012, 12:58 AM   #66
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Re: Aerodynamics / MPG increase - up 16%

It's possible. We are dealing with two factors:

1 Frontal area, which is the cross section area of the vehicle seen from the end.

2 Drag coefficient, which is how "smooth" the shape of the vehicle is. The ideal aerodynamic shape is a rain drop -- long tapered tail.

Adding a trailer would not increase the frontal area, and might improve the drag coefficient. But you are adding weight and rolling resistance, so....
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Old 05-03-2012, 11:15 AM   #67
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Re: Aerodynamics / MPG increase - up 16%

So if you build a super light trailer that is a teardrop shape, then the weight might not be a factor at all.. My brother built a teardrop one that was tall enough to stand up in and around 12 feet long and it weighs only 380 lbs. He used 1/8 skins and glued styrofoam together. If i ever get around to it, i will build one also to tow behind the 49 chev...
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Old 05-03-2012, 12:09 PM   #68
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Re: Aerodynamics / MPG increase - up 16%

doesnt need to be just for the tear drop effect. i took my fathers super duty for a 2 hour drive to get a camper. on the way back (on a calm day) i got much better mileage towing the trailer. dunno why but it did. same with this last weekend. fully loaded mini van getting 30's for mpg. dunno why but it just drove better loaded.
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Old 05-03-2012, 12:36 PM   #69
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Re: Aerodynamics / MPG increase - up 16%

Quote:
Originally Posted by chev49
So if you build a super light trailer that is a teardrop shape, then the weight might not be a factor at all.
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Old 07-23-2014, 10:51 AM   #70
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Re: Aerodynamics / MPG increase - up 16%

nice stuff
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