Go Back   EcoModder Forum > Off-Topic > The Lounge
Register Now
 Register Now
 


Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 03-15-2020, 10:44 AM   #11 (permalink)
Moderator
 
Vman455's Avatar
 
Join Date: Feb 2012
Location: Urbana, IL
Posts: 1,938

Pope Pious the Prius - '13 Toyota Prius Two
Team Toyota
SUV
90 day: 51.62 mpg (US)

Tycho the Truck - '91 Toyota Pickup DLX 4WD
90 day: 22.22 mpg (US)
Thanks: 199
Thanked 1,803 Times in 940 Posts
Quote:
Originally Posted by freebeard View Post
The three-dimensional Cartesian Coordinate system is a misapprehension of a fundamentally tetrahedral reality. It's all downhill from there.
I disagree. Because of the unique constraints on our movement in t, a vector (x,y,z,t) fails the additive inverse property of vector spaces and any set W = {x(t) ,y(t), z(t), t} is not a subspace, where a set U = {x(t), y(t), z(t)} is. So, while it may be true that reality is fundamentally a four-dimensional space, it is not very useful to us to represent it that way--and we've accomplished everything we have in the fields of engineering and science by doing just that.

__________________
UIUC Aerospace Engineering
www.amateuraerodynamics.com
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 03-15-2020, 12:09 PM   #12 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 27,951
Thanks: 7,845
Thanked 8,679 Times in 7,154 Posts
Quote:
Because of the unique constraints on our movement in t, a vector (x,y,z,t) fails the additive inverse property of vector spaces
What's t got to do with it? Four axis at 60° demarcates physical space as well as three at 90°.

It starts with closest packed spheres and progresses to Vornoi cells.
__________________
.
.
Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster

____________________
.
.
“You belong to Universe” -- the voice in Bucky Fuller's head
  Reply With Quote
Old 03-22-2020, 06:08 PM   #13 (permalink)
Master EcoModder
 
Ecky's Avatar
 
Join Date: Dec 2011
Location: New Zealand
Posts: 5,029

ND Miata - '15 Mazda MX-5 Special Package
90 day: 39.03 mpg (US)
Thanks: 2,881
Thanked 2,525 Times in 1,561 Posts
I haven't ever owned an auto, but I drive one at work. It's a Ford from around the same era and with similar displacement. Dunno if this is applicable or not, but I found that when I accelerate using cruise control (e.g. get up to 20 and then re-enable cruise) it immediately locks the torque converter and accelerates at around 80% load, shifting at pretty optimal points. I can't get it to lock the torque converter at that load without cruise control.

My experience has been that in city driving, even if accelerating more slowly isn't as efficient a way of accelerating, it results in lower average speed and less momentum lost at every stop, which tends to work out best.

Definitely get some FE instrumentation. Otherwise you're shooting in the dark.

I have a similar engine (Honda K series 2.4L) in my Insight. I haven't yet figured out how best to drive it, but I have observed two things:

1) It's a pig when it's still warming up.
2) Engine-off coasting helps a ton. Not that I'd recommend it in an auto.

  Reply With Quote
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com