Boat tail project based on a single wheel trailer...

[BamZipPow]

Originally Posted by freebeard

B-b-b-ut you had a checklist!

Which works great until you git interrupted and sidetracked with wife things that she feels should be packed right before the tailgate gits shut. Grrrr...

[aerohead]

The up-leg looks encouraging if I'm remembering the mpgs from last trip.
When Rutan and Yeager took off on their around the world Voyager flight I think they scraped the end of one wing on takeoff.So you're in grand company!

[BamZipPow]

Got a high of 27.66mpg on the return trip between Biloxi and College Station. Not bad fer towing a loaded trailer. I figure I added about 600lbs to my normal travel load from last year's trip from Houston to Tampa.

A rear shot from 50' away...


If I git a window to pull the tub and build up the trailer to better match the template, it will be probably near the end of the week after the cold front moves through.

[aerohead]

It's a fun club to be in.Hard for many to wrap their brain around.
And it's only going to get better as the little details are dealt with.
Congratulations Bam,and thanks again for all the time and expense to get things to this point.Our global data base is increasing with each excursion.
We'll get you a Texas Oil Producers decal for your windshield!
"Free fuel riding on the wind"

[aardvarcus]

Looking good!

[BamZipPow]

Gonna go out fer an hour run out to Cypress with the trailer empty and no passengers and see what data turns up.

[BamZipPow]

Got an indicated 24.9mpg going out and an indicated 26.7mpg coming back.

[aerohead]

Looks like your Cypress trip round trip ave.25.8 mpg is around 2.6% higher than your last 90-day average.
At the time when the trailer shape more closely conforms to the T-100's projection,and the gap is more minimized,she's going to take on the aerodynamic singularity which will allow the boat-tailing to really sing.
It's a really tasty proposition.And your 'flatland' testing takes some of the variables out of the equation that my mountain-route runs complicated.
Any gain suggests the viability of the range-extending concept.
If any of the AGGIES ask you what's up with the trailer,you can tell them that it's a towable, atmospheric-supplied,synthetic gasoline refinery which adds fuel to the tank as you drive.
We'll have a sign for the doors which reads:
I.G.Farrunindustrie Aktein Gesselschaft,Synthetische Hydrogenated Atmosferik LOONY Gasolin Werke,College Station,Texas.

[BamZipPow]

Finally got the tub pulled...

A quick mock up of the top...






A quick estimate of where the sides will taper to...

[wyatt]

Make sure to do some tuft testing to make sure your slope is good all the way back. I think it should be, but it never hurts to check.

Also if you have a smart phone, you can download a level app and figure out what the angle is at various places along the way. I used one to figure the slope of my Sedankamm back in the day, and on a couple other projects. Very handy.