03-17-2025, 08:25 AM
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#241 (permalink)
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EcoModding Lurker
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That’s an incredible project! The Zevo 600 is already a game-changer for electric vans, and adding an aero tail could really push its efficiency even further. Your design with the roll-out feathers sounds like something straight out of aerospace engineering. A 20% drag reduction would be a huge achievement—can’t wait to see the data when you test it.
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03-18-2025, 08:11 AM
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#242 (permalink)
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Master EcoModder
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Quote:
Originally Posted by paniwew
That’s an incredible project! The Zevo 600 is already a game-changer for electric vans, and adding an aero tail could really push its efficiency even further. Your design with the roll-out feathers sounds like something straight out of aerospace engineering. A 20% drag reduction would be a huge achievement—can’t wait to see the data when you test it.
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If 68% of fuel is used accelerating mass. vs 14% for aero drag (city driving)
then (weight adding) aero takes a 5X second place to weight saving panview, so be careful not to get too carried away by easy aero mods unless you spend a LOT of time driving on freeways.
About 2% of the world average is freeway driving.
IMHO that's why car makers don't bother much with boat tails etc.
JohnForde is in fact on the the freeway more than in town.
But I'd still love to see before/after freeway AND city economy numbers..!? |
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03-19-2025, 12:21 PM
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#243 (permalink)
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Master EcoModder
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' before, after, and city '
Quote:
Originally Posted by Logic
If 68% of fuel is used accelerating mass. vs 14% for aero drag (city driving)
then (weight adding) aero takes a 5X second place to weight saving panview, so be careful not to get too carried away by easy aero mods unless you spend a LOT of time driving on freeways.
About 2% of the world average is freeway driving.
IMHO that's why car makers don't bother much with boat tails etc.
JohnForde is in fact on the the freeway more than in town.
But I'd still love to see before/after freeway AND city economy numbers..!?
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John completed his long road trip with the tail, and published the results for comparison on Facebook, if you can locate it. 
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03-20-2025, 10:38 AM
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#244 (permalink)
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Somewhat crazed
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Depends on where you live...... in LA, 85-90 percent is on the freeway. Might still be low speed, but I worked nights and commuted in the other direction.
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03-22-2025, 02:13 AM
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#245 (permalink)
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aero guerrilla
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Quote:
Originally Posted by aerohead
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John completed his long road trip with the tail, and published the results for comparison on Facebook, if you can locate it. |
Any spoilers for those who avoid FB?
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e·co·mod·ding: the art of turning vehicles into what they should be
What matters is where you're going, not how fast.
"... we humans tend to screw up everything that's good enough as it is...or everything that we're attracted to, we love to go and defile it." - Chris Cornell
[Old] Piwoslaw's Peugeot 307sw modding thread
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03-22-2025, 03:30 AM
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#246 (permalink)
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Master EcoModder
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Facebook, if you can tolerate it.
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.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
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.Necessity is the mother of invention, but simplicity is it's favorite aunt --Amish proverb
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03-22-2025, 08:32 AM
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#247 (permalink)
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Master EcoModder
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Quote:
Originally Posted by JohnForde
2 more pics of the tail, pre trip.
Second one shows L bracket for structure hanging out in the wind.
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I'm sure you will evolve a more elegant solution as time allows.
Gotta do what you gotta do to get to the goal.
Like my engineer used to say, it's always right the second time around.
Thanks for posting here, I'm not a Face bloke guy either.
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Architect, Artist and Designer of Objects
2012 Infiniti G37X Coupe
1977 Porsche 911s Targa
1998 Chevy S-10 Pick-Up truck
1989 Scat II HP Hovercraft
You cannot sell aerodynamics in a can............
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03-22-2025, 12:10 PM
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#248 (permalink)
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Master EcoModder
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' spoilers '
Quote:
Originally Posted by Piwoslaw
Any spoilers for those who avoid FB?
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Wish I could say yes, but diving into Facebook would be a luxury I can't afford for awhile.
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05-01-2025, 07:28 AM
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#249 (permalink)
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Master EcoModder
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Quote:
Originally Posted by aerohead
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John completed his long road trip with the tail, and published the results for comparison on Facebook, if you can locate it. |
I said: "If 68% of fuel is used accelerating mass. vs 14% for aero drag (city driving)
then (weight adding) aero takes a 5X second place to weight saving panview, so be careful not to get too carried away by easy aero mods unless you spend a LOT of time driving on freeways.
About 2% of the world average is freeway driving.
IMHO that's why car makers don't bother much with boat tails etc.
JohnForde is in fact on the the freeway more than in town.
But I'd still love to see before/after freeway AND city economy numbers..!? Meaning freeway numbers, by themselves, are of little (2%) import, on average.
So how do "long road trip" numbers apply to my point/question..?? |
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05-01-2025, 12:30 PM
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#250 (permalink)
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Master EcoModder
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' 68% '
Quote:
Originally Posted by Logic
I said: "If 68% of fuel is used accelerating mass. vs 14% for aero drag (city driving)
then (weight adding) aero takes a 5X second place to weight saving panview, so be careful not to get too carried away by easy aero mods unless you spend a LOT of time driving on freeways.
About 2% of the world average is freeway driving.
IMHO that's why car makers don't bother much with boat tails etc.
JohnForde is in fact on the the freeway more than in town.
But I'd still love to see before/after freeway AND city economy numbers..!? Meaning freeway numbers, by themselves, are of little (2%) import, on average.
So how do "long road trip" numbers apply to my point/question..?? |
In the USA, EPA testing only attributes 14% of energy to 'acceleration.'
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