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Search took 0.05 seconds. Search: Posts Made By: Piwoslaw
Forum: Aerodynamics 04-13-2024, 11:35 AM
Replies: 1,306
Views: 163,131
Posted By Piwoslaw
https://ecomodder.com/forum/attachment.php?attachm...

https://ecomodder.com/forum/attachment.php?attachmentid=34668&d=1713022489 (https://img-9gag-fun.9cache.com/photo/aLnR1VV_460swp.webp)
Forum: Aerodynamics 04-09-2024, 07:43 AM
Replies: 1
Views: 105
Posted By Piwoslaw
They are like small Kammbacks. If the angles are...

They are like small Kammbacks. If the angles are correct, they could slightly reduce the wake area at the rear.
Forum: DIY / How-to 04-07-2024, 03:53 PM
Replies: 13
Views: 5,517
Posted By Piwoslaw
I'll just brutally resurrect this long-necroed...

I'll just brutally resurrect this long-necroed thread.

When our 3 person family travels, we fit the bikes inside the car to minimize aero drag:...
Forum: Aerodynamics 03-31-2024, 01:33 PM
Replies: 5
Views: 236
Posted By Piwoslaw
Start with a shorter Kammback or box cavity,...

Start with a shorter Kammback or box cavity, which will already give you benefits.

Later you can make a hitch-mounted boattail, which will extend the lines of these, to use during longer and/or...
Forum: Aerodynamics 03-30-2024, 03:15 PM
Replies: 5
Views: 236
Posted By Piwoslaw
Hi Caillou! With those mods it looks like...

Hi Caillou!

With those mods it looks like you have the low-hanging fruit.

I saw some specs somewhere that your model should use an average of 154Wh/km. Have you been tracking energy consumption...
Forum: Aerodynamics 03-22-2024, 02:00 AM
Replies: 12
Views: 1,139
Posted By Piwoslaw
I would add A/C on/off, so you have good air flow...

I would add A/C on/off, so you have good air flow over its condenser.
Forum: Aerodynamics 03-21-2024, 04:42 AM
Replies: 12
Views: 1,139
Posted By Piwoslaw
Nice! Now I am interested in how the Arduino...

Nice!

Now I am interested in how the Arduino will control it.
Forum: Aerodynamics 02-26-2024, 01:03 AM
Replies: 53
Views: 7,566
Posted By Piwoslaw
"Zimowa zasłona" would sound better. In...

"Zimowa zasłona" would sound better.


In the diesel world you might even have an OEM grille block for winter:
Forum: Aerodynamics 02-23-2024, 01:23 PM
Replies: 53
Views: 7,566
Posted By Piwoslaw
In case police ever pull me over, or I risk...

In case police ever pull me over, or I risk failing inspection, because of a grille block, I keep this picture in my phone:
https://ecomodder.com/forum/attachment.php?attachmentid=34541&d=1708712475
Forum: EcoModding Central 01-28-2024, 01:21 AM
Replies: 3
Views: 242
Posted By Piwoslaw
Not sure how long your trips are, but a lot of...

Not sure how long your trips are, but a lot of insulation around the battery might keep it from warming up fast enough once the engine bay is hot.

If you have access to plugging in, then a...
Forum: Aerodynamics 12-27-2023, 01:29 PM
Replies: 24
Views: 1,462
Posted By Piwoslaw
Anyone ever tried pedalling their bicycle to...

Anyone ever tried pedalling their bicycle to 35mph and keeping that speed?
Broke a sweat? That's because aero drag doesn't start above 35mph, it's already there at lower speeds.

When I made my...
Forum: The Lounge 12-15-2023, 03:16 PM
Replies: 4
Views: 332
Posted By Piwoslaw
OEM bricking of vehicle software

I came across the below story:

Polish Hackers Repaired Trains the Manufacturer Artificially Bricked. Now The Train Company Is Threatening Them...
Forum: Off-Topic Tech 12-09-2023, 04:16 PM
Replies: 7
Views: 332
Posted By Piwoslaw
Been using a sock filled with silica gel cat...

Been using a sock filled with silica gel cat litter ever since jakobnev recommended it so many years ago...
Forum: Hypermiling / EcoDriver's Ed 07-14-2023, 01:12 PM
Replies: 16
Views: 3,388
Posted By Piwoslaw
Beauty is in the eye of the beholder. Some will...

Beauty is in the eye of the beholder.
Some will say that a car with side skirts, kammback, or boattail looks better than stock.
Forum: EcoModding Central 07-14-2023, 01:03 PM
Replies: 8
Views: 544
Posted By Piwoslaw
Aluminum is great at transferring heat. Remind...

Aluminum is great at transferring heat.
Remind me once more why no one has mentioned filling the gap with insulation?
That would reduce the temperature more than just an air gap.
Forum: Aerodynamics 07-01-2023, 03:00 PM
Replies: 44
Views: 2,161
Posted By Piwoslaw
One more thing to keep in mind: Should the roof...

One more thing to keep in mind: Should the roof be reinforced to handle additional force at the point of mounting the air brake?
Forum: Aerodynamics 02-17-2023, 02:30 PM
Replies: 6
Views: 641
Posted By Piwoslaw
But to run the A/C you would need to uncover the...

But to run the A/C you would need to uncover the radiator, so factor in the increaed drag from removing the grille block.
Forum: EcoModding Central 02-05-2023, 12:09 PM
Replies: 2
Views: 590
Posted By Piwoslaw
Thermal imaging for engine insulation

I had a chance to borrow a thermal imaging camera to check something at home, and got the idea to check my car's engine bay insulation.

Took 2 pics of the car roughly 10-15min after parking on the...
Forum: The Unicorn Corral 01-29-2023, 03:47 PM
Replies: 41
Views: 12,360
Posted By Piwoslaw
https://a1cf74336522e87f135f-2f21ace9a6cf005245664...

https://a1cf74336522e87f135f-2f21ace9a6cf0052456644b80fa06d4f.ssl.cf2.rackcdn.com/images/characters/large/800/Magneto.X-Men-Series.webp
Forum: Aerodynamics 01-23-2023, 03:23 PM
Replies: 35
Views: 1,885
Posted By Piwoslaw
Fellow forumers, we need to coerce Cd to remove...

Fellow forumers, we need to coerce Cd to remove the word 'Failed' from the title of this thread.

Or just ask the mods, explaining it is misleading.:P
Forum: The Unicorn Corral 01-23-2023, 12:06 AM
Replies: 41
Views: 12,360
Posted By Piwoslaw
I'd pay you those $50 back to get a scientific...

I'd pay you those $50 back to get a scientific explanation of why this works.
Forum: Aerodynamics 01-22-2023, 03:38 PM
Replies: 35
Views: 1,885
Posted By Piwoslaw
Cd, this is great! You are so close that you...

Cd, this is great!
You are so close that you shouldn't give up!

Maybe still work on the first, stationary part. It gives the largest effect and no moving parts. Once you're good with that add the...
Forum: Aerodynamics 01-22-2023, 06:16 AM
Replies: 59
Views: 4,045
Posted By Piwoslaw
Is this square enough for ya? From Weather...

Is this square enough for ya?

From Weather Spotter's Full boat tail on a Matrix (https://ecomodder.com/forum/showthread.php/full-boat-tail-matrix-14954.html)
Forum: Aerodynamics 01-22-2023, 01:15 AM
Replies: 59
Views: 4,045
Posted By Piwoslaw
Tapering the sides allows a larger reduction of...

Tapering the sides allows a larger reduction of the rear wake area than top-bottom only.

Also, since the boattail is far beyond the rear axle, it improves clearance when turning.

Among the...
Forum: The Unicorn Corral 01-20-2023, 04:04 PM
Replies: 41
Views: 12,360
Posted By Piwoslaw
The Unicorn Corral...

The Unicorn Corral (https://ecomodder.com/forum/unicorn-corral.html)
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