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Search took 0.01 seconds. Search: Posts Made By: fjasper
Forum: EcoModding Central 11-16-2013, 02:41 PM
Replies: 12
Views: 2,386
Posted By fjasper
Has anyone used traffic cones for fairing material?

I've been looking for something that would make good fairings for in front of and behind wheels.

It came to mind that traffic cones are tough, tapered, easy to cut, and inexpensive. (To be clear...
Forum: Off-Topic Tech 06-17-2011, 02:26 PM
Replies: 98
Views: 16,577
Posted By fjasper
Send a sample off to these guys: Blackstone Labs...

Send a sample off to these guys: Blackstone Labs (http://www.blackstone-labs.com/) in the free bottle they send you, and they'll figure out how long your oil is lasting, acidity, metals, dirt,...
Forum: DIY / How-to 04-30-2011, 02:51 PM
Replies: 17
Views: 6,180
Posted By fjasper
List of fallacious argument techniques...

List of fallacious argument techniques (http://www.don-lindsay-archive.org/skeptic/arguments.html)

(picks up a stick and sets about belaboring the cadaverous equine)
...
Forum: Off-Topic Tech 04-30-2011, 01:13 PM
Replies: 28
Views: 16,325
Posted By fjasper
That's way too bad to be just camber. It'd have...

That's way too bad to be just camber. It'd have to look like the wheels were falling off for camber to have that big an effect. Most likely it's a combination of some negative camber and too much...
Forum: EcoModding Central 04-25-2011, 02:58 PM
Replies: 7
Views: 2,484
Posted By fjasper
As tempting as it is to jump to LRR tires right...

As tempting as it is to jump to LRR tires right away, if the tires you have are usable, you're probably better off costwise to run the existing tires until they need to be replaced, then replace with...
Forum: EcoModding Central 03-22-2011, 10:39 PM
Replies: 24
Views: 4,707
Posted By fjasper
As in, smaller injectors plus higher fuel...

As in, smaller injectors plus higher fuel pressure for the same flow with better atomization?

It seems like reducing the reciprocating mass (pistons & rods) would be more important than reducing...
Forum: EcoModding Central 03-22-2011, 03:14 PM
Replies: 24
Views: 4,707
Posted By fjasper
Copied from another site...

Copied from another site (http://www.gassavers.org/showthread.php?t=7290)

dkjones96
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Join Date: Nov 2007
Location: Albuquerque, NM
Posts: 1,350
Forum: EcoModding Central 03-22-2011, 03:04 PM
Replies: 24
Views: 4,707
Posted By fjasper
Maybe a cam grind? I think I heard the automatics...

Maybe a cam grind? I think I heard the automatics had a different cam profile and timing that favored low-rpm torque (and maybe economy?) I think the automatic version had less overlap, but I'm...
Forum: Off-Topic Tech 03-19-2011, 06:20 PM
Replies: 5
Views: 2,093
Posted By fjasper
Try wiggling the gearshift while you turn the...

Try wiggling the gearshift while you turn the key. Try it in Neutral as well as in Park.

Check, loosen, wiggle and re-tighten the battery cables. Or just bang on them if you don't have any tools....
Forum: EcoModding Central 03-17-2011, 02:31 PM
Replies: 7
Views: 4,141
Posted By fjasper
"The testing undertaken compares the concept...

"The testing undertaken compares the concept lubricant to a 10W-30 oil which is a widely used viscosity in European markets."
Forum: Aerodynamics 03-16-2011, 11:48 PM
Replies: 81
Views: 17,993
Posted By fjasper
:D This made me laugh so hard I almost choked! ...

:D This made me laugh so hard I almost choked!

We should have a contest (in the corral, obviously) for the most scientific-sounding, vaguely plausible, complete hogwash aerodynamic/mpg sales...
Forum: Aerodynamics 03-15-2011, 01:09 PM
Replies: 11
Views: 2,455
Posted By fjasper
If it allows airflow to reattach, and then...

If it allows airflow to reattach, and then produces a clean detatchment over the smaller area of the back of the car (rather than having the combined area of the back of the trunk and rear window...
Forum: Aerodynamics 03-15-2011, 12:44 PM
Replies: 81
Views: 17,993
Posted By fjasper
Vortex Generators - hopefully a rational discussion.

[If this devolves into crazy-talk, kick it to the corral, but we can at least start out trying to improve understanding of this topic.]

VGs can be discussed rationally, but claiming they'll do...
Forum: General Efficiency Discussion 03-14-2011, 11:56 PM
Replies: 10
Views: 6,818
Posted By fjasper
Wiley seems to be a book seller. The title...

Wiley seems to be a book seller.

The title of the book is "Mechanics of Pneumatic Tires", by Samuel K. Clark, US Bureau of Standards.
...
Forum: General Efficiency Discussion 03-14-2011, 04:53 PM
Replies: 10
Views: 6,818
Posted By fjasper
Mechanics of Pneumatic Tires - pdf

Found a document that talks a lot about tires, including non-linear rolling resistance characteristics vs. speed, rolling resistance vs. inflation pressure, and other interesting stuff.
...
Forum: Hypermiling / EcoDriver's Ed 03-14-2011, 02:27 PM
Replies: 505
Views: 111,739
Posted By fjasper
This time of year around here, just ease over to...

This time of year around here, just ease over to the right where the sand and gravel from winter haven't been cleared off yet. The cloud of dirt, sand and rocks usually convinces people to do...
Forum: EcoModding Central 03-14-2011, 09:52 AM
Replies: 12
Views: 13,249
Posted By fjasper
Safari Roof! From The Ho Residence...

Safari Roof!

From The Ho Residence (http://ho-residence.blogspot.com/)

"With such a wide area being exposed to the sun and heat throughout the day, it was critical that the roof design...
Forum: Aerodynamics 03-09-2011, 03:39 PM
Replies: 29
Views: 9,132
Posted By fjasper
And also, those hooks are tie-down hooks for...

And also, those hooks are tie-down hooks for transport on the ship from Japan. They're not supposed to be used for towing, and can be removed without ill effect. (Unless you're racing in a stock...
Forum: Aerodynamics 03-08-2011, 08:43 PM
Replies: 14
Views: 5,185
Posted By fjasper
FWIW, the pizza pans I ordered were almost...

FWIW, the pizza pans I ordered were almost exactly the nominal size. 18" pan is about 17 15/16" in diameter, edge to edge. This is about 3/4" smaller than the diameter of the visible metal part of...
Forum: EcoModding Central 03-05-2011, 01:04 PM
Replies: 36
Views: 19,194
Posted By fjasper
Aviation Gas

I don't know all the details, but they've been working on a lead-free fuel for aviation use for a long time. It's apparently a difficult technical problem, due to the various requirements of avgas.
...
Forum: Aerodynamics 03-04-2011, 03:09 PM
Replies: 29
Views: 9,132
Posted By fjasper
Lexan is a trademarked name for polycarbonate...

Lexan is a trademarked name for polycarbonate sheet. It's softer & scratches more easily than Plexiglas (a trademarked name for acrylic sheet), but it has much better impact resistance than plexi.
...
Showing results 1 to 21 of 21

 
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