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Search took 0.08 seconds. Search: Posts Made By: seifrob
Forum: Aerodynamics 07-07-2023, 11:59 AM
Replies: 37
Views: 3,553
Posted By seifrob
Gentlemen, please stop this

Please stop this. Not again
I am neither a moderator responsible for stopping flame wars (like VMan is), nor an esteemed author, who shoud be able to keep cool head in discussion with readers (like...
Forum: Aerodynamics 09-27-2022, 12:45 PM
Replies: 39
Views: 5,142
Posted By seifrob
then I remebered this one:...

then I remebered this one: https://ecomodder.com/forum/showthread.php/pizza-pans-long-haul-trucks-14550.html#post194036
Forum: Aerodynamics 09-24-2022, 05:17 PM
Replies: 39
Views: 5,142
Posted By seifrob
Probably an old hat to you, but Vekke designed...

Probably an old hat to you, but Vekke designed smooth hubcaps for trucks/trailers some 11 years ago.
this is his thread:...
Forum: The Lounge 04-10-2022, 03:30 AM
Replies: 115
Views: 11,202
Posted By seifrob
Call me a spoilfun, but I like it as it is. ...

Call me a spoilfun, but I like it as it is.
From my point of view:

- the ecomodder is lightweight enough so it loads reasonably well even ob my outdated phone
-yes, the forum UI has its perks,...
Forum: Saving@Home 01-31-2022, 07:06 PM
Replies: 15
Views: 2,844
Posted By seifrob
I once tried the exact thing: to produce cork...

I once tried the exact thing: to produce cork dust for our Kundts tube experiment. All experience in one word: it sucks.
Tried to process it in meat ?mincer?, in coffee grinder, everything I had at...
Forum: Aerodynamics 01-27-2022, 07:24 PM
Replies: 34
Views: 3,338
Posted By seifrob
Given the shape and size, I would get inspiration...

Given the shape and size, I would get inspiration in commercial dry van trailers. Round front edges using PVC sewage pipes with one quarter cutted out, use foldable box cavity/boat tail, put a...
Forum: The Lounge 01-16-2022, 08:15 AM
Replies: 79
Views: 7,468
Posted By seifrob
that two kids on a trailer is a breeze compared...

that two kids on a trailer is a breeze compared to that on her fork and backpack on her back. Must be scary in crosswinds too.
I had similar setup. Kid in front (restless kid, tbh) makes riding...
Forum: Aerodynamics 06-02-2021, 01:16 AM
Replies: 200
Views: 16,443
Posted By seifrob
You know, from my point of view (that means...

You know, from my point of view (that means thousands of miles away from you, living in different culture, not to mention language barriere, I woud say its time to close this thread.

Sometimes...
Forum: Aerodynamics 05-26-2021, 11:09 AM
Replies: 200
Views: 16,443
Posted By seifrob
The debate was about a car equipped with...

The debate was about a car equipped with lift-generating device to eliminate rolling resistance losses.

So, for strictly academic debate yes, it is possible to equip a car with such a device, that...
Forum: Aerodynamics 05-25-2021, 04:40 PM
Replies: 200
Views: 16,443
Posted By seifrob
Disclaimer: I am neither expert, nor can I...

Disclaimer:
I am neither expert, nor can I provide some numeric data (any pilot here? input is most welcome).

Even at speed, when you turn really hard (think of deer-evasive manouvers), your car...
Forum: Aerodynamics 03-22-2021, 05:53 AM
Replies: 38
Views: 4,216
Posted By seifrob
back to Jetoptera

Finally got to post answer from VZLÚ (czech aviation research agency and proving lab), where Jetoptera (according to globenewswire.com...
Forum: Aerodynamics 03-02-2021, 06:10 PM
Replies: 15
Views: 11,380
Posted By seifrob
This has been discussed in many threads before,...

This has been discussed in many threads before, iirc. The seemingly backward shape is because of aerodynamic stability, at least that was the answer provided (cannot find the OP though), and I think...
Forum: Aerodynamics 02-26-2021, 07:56 PM
Replies: 38
Views: 4,216
Posted By seifrob
In replay to Tatra ejectors (sorry to hijack a...

In replay to Tatra ejectors (sorry to hijack a thread)

Samwichse explained it nearly all. As Tatra was air-cooled V8, they relied on two fans to cool the engine. (The drawing shows stock engine.)...
Forum: Aerodynamics 02-25-2021, 03:19 AM
Replies: 38
Views: 4,216
Posted By seifrob
-samwichse probably wants to draw attention to...

-samwichse probably wants to draw attention to ejectors used at the back of that Tatra 603. While I do not object that ejectors can produce massive amount of moving air, I have conserns about total...
Forum: The Lounge 11-12-2020, 04:01 PM
Replies: 240
Views: 18,570
Posted By seifrob
Xist, have you ever considered to a) bring...

Xist,
have you ever considered to
a) bring your notebook to closest computer shop, give them 20 (30) bucks and say "I need a complete reinstall and cleanup please? And also reconfigure this router...
Forum: Aerodynamics 08-09-2019, 01:15 PM
Replies: 3
Views: 3,005
Posted By seifrob
I am pretty sure you found this:...

I am pretty sure you found this: https://ecomodder.com/wiki/Car_MPG_Efficiency_Modifications_Main

There is written both mods are worth about 3% MPG. As you drive Civic, which is very clean car...
Forum: Aerodynamics 08-07-2019, 02:50 PM
Replies: 3
Views: 3,005
Posted By seifrob
there is plenty of posts and threads discussing...

there is plenty of posts and threads discussing this either on wiki or in forum/aerodynamics. You will find them under the term "wheel skirts" or "fender skirts". It is US forum, after all.
My...
Forum: The Lounge 03-23-2019, 03:16 PM
Replies: 24
Views: 2,891
Posted By seifrob
woke up early, prepared breakfast for my...

woke up early, prepared breakfast for my childrens and wife, spent the day like all the other days.
I wish you to enjoy yours, though.
Forum: Saving@Home 03-16-2019, 07:11 PM
Replies: 97
Views: 11,150
Posted By seifrob
Actually, after I read the book, I considered it...

Actually, after I read the book, I considered it waste of time. I think the movie was way better. But, it could be just bad translation...
Forum: Introductions 01-19-2019, 01:07 PM
Replies: 13
Views: 3,191
Posted By seifrob
The rewiew I was able to find says 100 km/ h,...

The rewiew I was able to find says 100 km/ h, 2500 rpm, 5.7 l/100 km. But it is 6 speed manual. All (around 400?) jettas in my country are probably manual.

Buy bluetooth OBD2 dongle. Its about $6....
Forum: The Lounge 11-07-2018, 12:14 PM
Replies: 65
Views: 5,443
Posted By seifrob
I think its natural to use any unit conveniently...

I think its natural to use any unit conveniently large. I would not say 1000 meters. I would say kilometer, also, I would not say 5604 feet, but I would use mile instead.
I dont know why (sort of...
Forum: Aerodynamics 11-03-2018, 10:57 AM
Replies: 6
Views: 2,170
Posted By seifrob
No need to imagine anything. My dad first car -...

No need to imagine anything. My dad first car - Skoda 105 (https://en.m.wikipedia.org/wiki/%C5%A0koda_120) - had exactly this setup. Rear engine, front radiator, air vented under the car. The reason...
Forum: EcoModding Central 10-27-2018, 01:34 PM
Replies: 45
Views: 13,070
Posted By seifrob
I drive a "kombi" style car (station wagon to...

I drive a "kombi" style car (station wagon to you) and that means a lot of air I heat when I do not need to. So in winter I install a barrier (well, a cardboard desk in fact) just behind passengers...
Forum: Aerodynamics 10-07-2018, 12:40 PM
Replies: 4
Views: 949
Posted By seifrob
You do not need to rent anything! It's a good...

You do not need to rent anything! It's a good chance you already have it at home:
https://www.shapify.me/scan-at-home

(third or so link after I googled "kinect 3d scanner")
Forum: The Lounge 09-22-2018, 12:03 PM
Replies: 16
Views: 2,304
Posted By seifrob
:turtle: The trouble is, that average SUV...

:turtle:

The trouble is, that average SUV driver feels better and more safe in Metro and Insight world. But when everyone drives SUV, all the safety bonus due size is gone. So carmakers produce...
Showing results 1 to 25 of 92
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