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Forum:
The Lounge
Today, 04:18 PM
Replies:
277
Car prices are still insane.
Views:
11,310
Posted By
Isaac Zachary
AA brand cylinder and cylinder sets are top...
AA brand cylinder and cylinder sets are top notch. Their stock 1,600 cc set is what I got for my Bug and they are high quality. Many have said that they are higher quality than the Mahle cylinders....
Forum:
General Efficiency Discussion
Today, 02:10 PM
Replies:
11
Dimpled Pistons: 20%+ better (Diesel) fuel economy!??
Views:
206
Posted By
Logic
These dimples (size position etc) are most likely...
These dimples (size position etc) are most likely based on software developed by a Sal Rodriguez of Sandia National Labs.
New topic here:...
Forum:
Aerodynamics
Today, 02:06 PM
Replies:
1
You need this software before dimples work
Views:
38
Posted By
Logic
You need this software before dimples work
Sal Rodriguez a nuclear engineer at Sandia National Labs came up with software where you input:
1: Your shape. (eg: car body)
2: The 'fluid' (air) its moving through.
3: The speed at which its...
Forum:
The Lounge
Today, 01:11 PM
Replies:
544
Scott Adams Thread (Garfield Cartoonist)
Views:
29,065
Posted By
Piotrsko
Feels like the '70's once again, only the fuzz...
Feels like the '70's once again, only the fuzz was too nice fer a change. Skip a generation and the youngins gotta redo everything we did, but worse and wrong. Seriously, Columbia? Really? West...
Forum:
Events & Meet-ups
Yesterday, 04:37 PM
Replies:
1
HPV races may 4th major tayloe velodrome, indy
Views:
43
Posted By
arcosine
HPV races may 4th major tayloe velodrome, indy
https://hosting.photobucket.com/images/g277/cfbb/IMG_3402.png
Forum:
Aerodynamics
Yesterday, 11:45 AM
Replies:
1,088
Boat tail project based on a single wheel trailer...
Views:
257,789
Posted By
aerohead
' Bam's trailer '
Bam's trailer is hinged to a transverse spar, welded to the 2-inch 'male' pipe which engages the receiver hitch.
It articulates in 'pitch', dampened by duel air-springs.
Forum:
Alternative Transportation
Yesterday, 09:06 AM
Replies:
47
Picked up another stray (bike): 1962 CCM singlespeed
Views:
11,966
Posted By
MetroMPG
It's actually a center stand - the left side of...
It's actually a center stand - the left side of it is hidden behind the right.
Same kind of stand as on the old CCM:
...
Forum:
Aerodynamics
05-01-2024, 06:48 PM
Replies:
1,088
Boat tail project based on a single wheel trailer...
Views:
257,789
Posted By
freebeard
BamZipPow's example is not articulated. I've...
BamZipPow's example is not articulated.
I've only seen one-wheel articulated trailers on motorcycles.
Forum:
Aerodynamics
05-01-2024, 06:37 PM
Replies:
21
Brilliant way to visualise/see air/fluid flow
Views:
635
Posted By
freebeard
...if you follow the recipe; it's difficult to...
...if you follow the recipe; it's difficult to respect ingress/egress, breakover angles and worst of all, rear view mirror requirements.
Forum:
Aerodynamics
05-01-2024, 11:54 AM
Replies:
1,088
Boat tail project based on a single wheel trailer...
Views:
257,789
Posted By
Logic
Erm... If you want to make an articulated 1...
Erm...
If you want to make an articulated 1 wheeled trailer (no castor wheel) your 'tow hitch should be a universal cross as found in driveshafts on rear wheel drive cars.
Now you have the...
Forum:
Alternative Transportation
05-01-2024, 11:14 AM
Replies:
47
Picked up another stray (bike): 1962 CCM singlespeed
Views:
11,966
Posted By
MetroMPG
I guess I've got the old bike hoarding sickness
I think I've traded hoarding old Metros for hoarding old bikes...
https://ecomodder.com/forum/attachment.php?attachmentid=34702&stc=1&d=1714575671
I've picked up half a dozen 50 - 75 year-old...
Forum:
EcoModding Central
05-01-2024, 08:08 AM
Replies:
59
How much does tire and wheel weight effect MPG?
Views:
117,216
Posted By
steve05ram360
Throttle response changes with heavier tires, the...
Throttle response changes with heavier tires, the same for lighter wheels. If you drive 400 miles (example) non stop on the hiway then there may not be an impact but over a mixed tank where your...
Forum:
The Lounge
04-30-2024, 07:49 PM
Replies:
544
Scott Adams Thread (Garfield Cartoonist)
Views:
29,065
Posted By
freebeard
I didn't recognize the reframing of the questions...
I didn't recognize the reframing of the questions because I didn't dwell on each one. Some tests give a better result if you give an initial reaction rather than over-thinking each answer. an example...
Forum:
Aerodynamics
04-30-2024, 12:05 PM
Replies:
25
'Tesla Model 3 Highland aero tweaking'
Views:
1,827
Posted By
Phase
The air curtains on the new model 3 actually look...
The air curtains on the new model 3 actually look pretty good. Did they say what the drag coefficient is for the performance version? They mentioned better front splitter and rear diffuser too. I’m...
Forum:
Aerodynamics
04-30-2024, 10:05 AM
Replies:
3
SAE International, 2022-28-0509 ( Aer0 vs Range)
Views:
140
Posted By
ennored
"The car chosen for this study is an urban...
"The car chosen for this study is an urban electric hatchback car, designed for Indian conditions." "Length(mm) 3280....."
The dimensions given match a Mahindra e2o:
...
Forum:
Aerodynamics
04-30-2024, 04:23 AM
Replies:
25
'Tesla Model 3 Highland aero tweaking'
Views:
1,827
Posted By
Vekke
For some "reason" new model 3 performance has...
For some "reason" new model 3 performance has brought back the older looking air curtain style.
https://youtu.be/SsI8i1nfahs?si=0VQTF7BXWNPPngSc&t=152
So my estimate is that the new style from...
Forum:
Aerodynamics
04-29-2024, 01:52 PM
Replies:
20
Arduino UNO-based Active Grille Block
Views:
1,726
Posted By
CigaR007
Did a 30-mile loop yesterday. Ambient air...
Did a 30-mile loop yesterday. Ambient air temperature was around 16 deg C and the coolant was stable at 95 deg C with the grille shutter half-open.
Pretty sure the grille shutter will need to be...
Forum:
The Lounge
04-29-2024, 01:49 PM
Replies:
26
Energy Free Cooling through Physics
Views:
1,694
Posted By
freebeard
1) It's at ?t=628...
1) It's at ?t=628 (https://youtu.be/T2Sn9QG68WI?t=628). Ultrawhite paint is 88.6%, a silvered mirror is 89.5%.
2) Don't know
3) [citation needed]
4) Disagree. It's reflecting the heat load...
Forum:
General Efficiency Discussion
04-29-2024, 11:26 AM
Replies:
11
Dimpled Pistons: 20%+ better (Diesel) fuel economy!??
Views:
206
Posted By
aerohead
' 20% '
I'm not current on Diesels, as I've lost interest in internal combustion, but the last time I looked, the most efficient diesels were in ocean-going cargo ships.
The one reported, was manufactured...
Forum:
Aerodynamics
04-29-2024, 11:06 AM
Replies:
3
SAE International, 2022-28-0509 ( Aer0 vs Range)
Views:
140
Posted By
aerohead
SAE International, 2022-28-0509 ( Aer0 vs Range)
Delta-10% drag = Delta 5% range on BEVs.
https://www.sae.org/publications/technical-papers/content/2022-28-0509/...
Forum:
Aerodynamics
04-29-2024, 10:29 AM
Replies:
7
rheoscopic fluid
Views:
212
Posted By
aerohead
' blame '
I blame him too!
He's just a !*$*&#+?~!! buzzkill.;)
Forum:
Aerodynamics
04-29-2024, 02:49 AM
Replies:
15
Ziptie Plugs from Tuneko
Views:
4,803
Posted By
Vekke
With so little 1/3" 8,5mm protrusion no impact...
With so little 1/3" 8,5mm protrusion no impact that you could measure to consumption. Maybe sound might be a problem but test will show is there any sounds coming.
I currently have no stock to...
Forum:
The Lounge
04-28-2024, 06:00 PM
Replies:
544
Scott Adams Thread (Garfield Cartoonist)
Views:
29,065
Posted By
freebeard
I think that link at #517 is corrupted. This...
I think that link at #517 is corrupted.
This system doesn't have the GIMP installed or I'd crop a screen shot.
I see that the X axis is economic. What would a collective/sovereign axis be...
Forum:
The Lounge
04-28-2024, 04:29 PM
Replies:
26
Energy Free Cooling through Physics
Views:
1,694
Posted By
freebeard
Here is a metamaterials approach: This Material...
Here is a metamaterials approach:
This Material Might Change How We Cool Our Houses Forever (https://www.youtube.com/watch?v=T2Sn9QG68WI)
A self-assembling aluminum foam. I should think that would...
Forum:
EcoModding Central
04-28-2024, 10:54 AM
Replies:
34
David Vizard's Pressure Wave Terminator Box?? and Anti Reversion?
Views:
4,331
Posted By
Logic
Ye; like that but ALSO with sucking at the...
Ye; like that but ALSO with sucking at the trailing edge of the upper wing surface..
ie: That blown air is directed/pointed towards a facing suction nozzle/slot of some sort, located very close...
Showing results 1 to 25 of 500
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