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Old 06-27-2023, 11:26 PM   #21 (permalink)
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That's the loft line. The various aerocaps that have been shown here vary from a square shoulder like the Cybertruck, to increasing tumblehome until the truncation at the tailgate is a curve.

What do you think of combining the two ideas at #18? Or all three including readpoint5's?


https://external-content.duckduckgo.com/iu/?....&ipo=images

Maybe a curved panel half the length of the bed?

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Old 06-28-2023, 11:08 PM   #22 (permalink)
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Quote:
Originally Posted by freebeard View Post
That's the loft line. The various aerocaps that have been shown here vary from a square shoulder like the Cybertruck, to increasing tumblehome until the truncation at the tailgate is a curve.



Maybe a curved panel half the length of the bed?
Can you show some examples of what you mean? Although, the parameters of my design are already dictated by how I need to use the topper. It needs to enclose the entire lower portion of the bed to protect all my tools, and open up in the center to haul residential doors. I’d add a drawing, but the design is difficult to describe in two dimensions. It will have increasing tumblehome as much as is possible with this design.
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Old 06-29-2023, 01:56 AM   #23 (permalink)
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ecomodder.com/wiki/Pickup_truck_aeroshell

hecomodder.com/forum/fuel-economy-mpg-modifications.php#c2
Quote:
Pickup truck aeroshell/fastback bed cover - permalink
Pickup trucks have high coefficients of drag. Fortunately, they're also ideal platforms for adding this highly effective aerodynamic modification.

A number of EcoModders have undertaken this task, recording highway fuel economy improvements of between 13-20% compared to an uncovered bed.

They can be built in such a way as to retain the usability of the bed as well.

Examples / Info / Threads:
Commercially produced aerodynamic pickup bed cap
Phil Knox fleet - 34 years of aeromodding
Nissan OEM pickup aeroshell / bed cap
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Old 09-28-2023, 03:49 AM   #24 (permalink)
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driving strategy is better by adjusting the way you drive
20/20EPA to 25.7MPG average (28.5% gain) 100% DEAD hybrid battery... MIL Code P0A80 confirmed..

the same route for the collora is getting a 47.05% gain. 34mpg EPA

getting 49.9-50MPG (100% stock...)

GAS STATION MATTERS!

any other fuel station I get barely 35mpg on the same route and 18 mpg for the SUV..

YES both vehicles are filling up correctly

So the gas station is giving me free gas (under reporting fuel actually dispensed)or the gas station matters.. or other gas stations are OVER reporting fuel dispensed aka scammers
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Old 09-28-2023, 10:39 AM   #25 (permalink)
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You're in Cali where it's illegal to set your pump to either over supply or short supply +/- some small percent. They also random test stations in unmarked vehicles constantly and I have seen the affects of failing to properly set the pumps: the station gets closed.

Cant see a station setting the pump for free fuel just as a business practice, doesn't make sense.

Lotta variables you could be missing, formulation, air density, temps, loose step ring wheel nut.......
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Old 09-29-2023, 01:02 AM   #26 (permalink)
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I don't know if there is any percentage allowed to short supply here, but I remember when ethanol dispensers in Brazil had a device to indicate the density of the fuel. Problem was mostly a higher density caused by moisture absorption by the ethanol back then.
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Old 09-29-2023, 11:24 AM   #27 (permalink)
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I don't think a pump could be off by more than about a half-gallon on a fill without me noticing. I estimate how much fuel a vehicle will take before pumping, and am usually within a couple tenths. A station might get away with cheating me by about 5%, but anything greater and I'll notice.
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Old 09-29-2023, 11:37 AM   #28 (permalink)
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I believe they were held to +/- 0.25%
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Old 09-29-2023, 01:09 PM   #29 (permalink)
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There was a time when you'd hand pump the gas into a (5 gallon?) graduated glass cylinder where you could see what amount and color it was, then let gravity flow it into the vehicle.


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Old 09-30-2023, 01:42 AM   #30 (permalink)
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Quote:
Originally Posted by freebeard View Post
There was a time when you'd hand pump the gas into a (5 gallon?) graduated glass cylinder where you could see what amount and color it was, then let gravity flow it into the vehicle.
My father told me similar pumps were still in use at some rural places in Amazon when he went there for the first time.

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