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Search took 0.01 seconds. Search: Posts Made By: Merlyn2220
Forum: Aerodynamics 10-12-2017, 02:56 PM
Replies: 44
Views: 15,173
Posted By Merlyn2220
One of the bigger shifts in FE was a relatively...

One of the bigger shifts in FE was a relatively simple one, installing paddle mirrors instead of the big 3 point towing mirrors. This one change meant the difference of only 5% improvement in FE,...
Forum: Aerodynamics 10-12-2017, 12:02 PM
Replies: 44
Views: 15,173
Posted By Merlyn2220
So here’s a summary of the “rear shell” and other...

So here’s a summary of the “rear shell” and other changes since fall of 2016:


Larger rear tires with a 15.8% gear reduction = no change in fuel economy. Any gains were offset by the wider...
Forum: Aerodynamics 09-30-2017, 02:18 PM
Replies: 323
Views: 54,055
Posted By Merlyn2220
If I'm reading the truck data correctly: Cd...

If I'm reading the truck data correctly:

Cd = 0.435 with everything and the joints taped up on the bed cover (aka Tonto)
Cd = 0.458 as above without the tape (+5.3%)
Cd = 0.357 removed the bug...
Forum: Aerodynamics 07-27-2017, 11:34 AM
Replies: 44
Views: 15,173
Posted By Merlyn2220
So I started hacking off some of the rear of the...

So I started hacking off some of the rear of the shell, in an attempt to figure out what was going on with the cavity and taper. I removed the center upper section (with taper) at about 100 miles...
Forum: Aerodynamics 07-17-2017, 04:56 PM
Replies: 323
Views: 54,055
Posted By Merlyn2220
Yeah I've noticed the same thing with filler. ...

Yeah I've noticed the same thing with filler. When it's 95F here, I have to mix less hardener, and mix-and-apply at the vehicle. Just the time to get from the garage out to the car or "mixing while...
Forum: Aerodynamics 05-05-2017, 07:48 PM
Replies: 44
Views: 15,173
Posted By Merlyn2220
I tried to use the A/C about the same amount, and...

I tried to use the A/C about the same amount, and this tank was 13.92. The last one with the A/C fixed I used it for about 2/3 of the tank and got 13.79. So I'm fairly comfortable with it being...
Forum: Aerodynamics 04-27-2017, 12:02 PM
Replies: 44
Views: 15,173
Posted By Merlyn2220
Most of it was pretty interesting, though not all...

Most of it was pretty interesting, though not all of it was effective! I haven't done a chin spoiler yet, but am planning on doing that after I finish the passenger side skirts.

At the moment I'm...
Forum: Aerodynamics 04-27-2017, 10:11 AM
Replies: 44
Views: 15,173
Posted By Merlyn2220
I was fairly certain that the zero-taper-top was...

I was fairly certain that the zero-taper-top was a big part of my screwup (when all else fails, FOLLOW THE TEMPLATE!) so I cut that off completely, and left the sides as is. MPG immediately jumped...
Forum: Aerodynamics 04-27-2017, 10:09 AM
Replies: 44
Views: 15,173
Posted By Merlyn2220
Since I was reasonably certain that the rear...

Since I was reasonably certain that the rear "shell" was an ok idea but really, REALLY poorly executed, I did the only rational thing. I hacked most of it off! I probably cut way too much off...
Forum: Aerodynamics 04-27-2017, 10:08 AM
Replies: 44
Views: 15,173
Posted By Merlyn2220
Bondo skinned over the top of a layer of...

Bondo skinned over the top of a layer of fiberglass. Bondo goes over the foam, then angle-grinder'd flat-ish, glass cloth (2 layers) or mat (1 layer) and then more Bondo over the top:...
Forum: Aerodynamics 04-27-2017, 10:07 AM
Replies: 44
Views: 15,173
Posted By Merlyn2220
My new MPG was somewhat short-lived, because...

My new MPG was somewhat short-lived, because installing the giant hitch (Draw-Tite Class V 41906) hanging off the back both added 60lb to the van, and also totally ruined any chances of having nice...
Forum: Aerodynamics 04-27-2017, 10:05 AM
Replies: 44
Views: 15,173
Posted By Merlyn2220
I continued down the side, boxing in the doors...

I continued down the side, boxing in the doors and keeping the contours nice and smooth. The build is various thicknesses of styrofoam, glued together with Loctite PL 3X Premium urethane adhesive. ...
Forum: Aerodynamics 04-27-2017, 10:04 AM
Replies: 44
Views: 15,173
Posted By Merlyn2220
You can sort of see in the 3rd picture, the flare...

You can sort of see in the 3rd picture, the flare actually goes OUTWARDS near the top. Fortunately I realized my mistake and only partially finished the passenger side before stopping. I've since...
Forum: Aerodynamics 04-27-2017, 10:02 AM
Replies: 44
Views: 15,173
Posted By Merlyn2220
After messing around a bit with the mirrors and...

After messing around a bit with the mirrors and antennas, I was consistently in the 14-ish mpg mark. I tried removing the "cold air snorkle" but all I noticed was an increase in noise level and a...
Forum: Aerodynamics 04-27-2017, 09:59 AM
Replies: 44
Views: 15,173
Posted By Merlyn2220
So one of the first mods I did was removing the...

So one of the first mods I did was removing the monstrous 3-point towing mirrors. It was unbelievably loud when I first started driving it on the highway, and I could barely go 70mph, while drafting,...
Forum: Aerodynamics 04-27-2017, 09:57 AM
Replies: 44
Views: 15,173
Posted By Merlyn2220
Creepy White Van - E150 aerodynamics

I started a thread in the "Central" forum, but was getting no feedback on aero mods. So I've moved the aerodynamic portion of the thread here for suggestions/complaints/criticism (mostly criticism...
Forum: EcoModding Central 04-18-2017, 05:01 PM
Replies: 41
Views: 8,083
Posted By Merlyn2220
<snip> Moved to Aerodynamics forum thread.

<snip> Moved to Aerodynamics forum thread.
Forum: EcoModding Central 04-17-2017, 08:23 PM
Replies: 41
Views: 8,083
Posted By Merlyn2220
Here's my fuel log and notes, I'll update as...

Here's my fuel log and notes, I'll update as needed:

3/29/16: 12.42
4/12/16: 13.94
5/26/16: 14.17
5/06/16: 13.94
5/20/16: 13.59
6/10/16: 13.02
7/05/16: 13.67
7/21/16: 13.97
Forum: Aerodynamics 03-12-2017, 04:23 PM
Replies: 62
Views: 13,537
Posted By Merlyn2220
Good question. The 1" foamular is $20 for a 4x8,...

Good question. The 1" foamular is $20 for a 4x8, if I were making just one layer it would be about $55 total for a 4x8 or $1.72/sqft plus tax. I'm using the foam glued together in layers to build...
Forum: Aerodynamics 03-12-2017, 01:34 PM
Replies: 62
Views: 13,537
Posted By Merlyn2220
I built up my sideskirts on the E150 with 1"...

I built up my sideskirts on the E150 with 1" thick pink styrofoam from Lowes, skinned them with the $35 fiberglass shower panels, and then glassed around the edges. The fiberglass panels are kind of...
Forum: General Efficiency Discussion 12-19-2016, 09:03 PM
Replies: 164
Views: 33,533
Posted By Merlyn2220
As the owner of 3 Miatas and a forum member, I...

As the owner of 3 Miatas and a forum member, I can't imagine why you wouldn't be welcome over there. Many (but not all) drive Miatas for a combination of good (if not great) fuel economy and fun to...
Forum: Aerodynamics 11-09-2016, 06:47 PM
Replies: 62
Views: 13,537
Posted By Merlyn2220
Once the tire has properly clearanced the...

Once the tire has properly clearanced the coroplast, you can add wheel spats in front! An easier way to get the clearance is to just jack up the back of the truck and let the axle droop. That...
Showing results 1 to 22 of 22

 
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