Go Back   EcoModder Forum > EcoModding > Aerodynamics
Register Now
 Register Now

Now available from EcoModder: ScanGauge II fuel economy gauge.  Click for details.  

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 02-09-2013, 01:07 PM   #531 (permalink)
EcoModding Apprentice
 
Join Date: Jul 2010
Location: Tucson, AZ
Posts: 244
Thanks: 111
Thanked 126 Times in 55 Posts
Quote:
Originally Posted by kach22i View Post
So this photo brings up an interesting question. Should I ever have time to finish the damn thing, when I arrive at the final shape of my boat tail I intend to have an A&P friend of mine cover it in aluminum. So it will be similar to this awesome creation in the photo.

The question is this; you've aluminum skin over a steel frame. How do you keep dissimilar metal corrosion at a minimum or eliminate it?

  Reply With Quote
Old 02-09-2013, 01:49 PM   #532 (permalink)
EcoModding Apprentice
 
Join Date: Jan 2008
Location: SF Bay Area
Posts: 150

Silver Bullet - '02 VW Golf TDi
Thanks: 5
Thanked 16 Times in 11 Posts
Quote:
Originally Posted by orbywan View Post
So this photo brings up an interesting question. Should I ever have time to finish the damn thing, when I arrive at the final shape of my boat tail I intend to have an A&P friend of mine cover it in aluminum. So it will be similar to this awesome creation in the photo.

The question is this; you've aluminum skin over a steel frame. How do you keep dissimilar metal corrosion at a minimum or eliminate it?
Your A&P friend will know to use zinc chromate primer between the aluminum and the steel.
__________________
Best tank ever: 72.1 mpg in February 2005, Seattle to S.F.
New personnal best 'all-city' tank June '08 ... 61.9 mpg!
Thanks to 'pulse-n-glide' technique.
  Reply With Quote
The Following User Says Thank You to Stan For This Useful Post:
aerohead (02-09-2013)
Old 02-09-2013, 05:43 PM   #533 (permalink)
radioranger
 
Join Date: Dec 2011
Location: Canton CT
Posts: 442
Thanks: 140
Thanked 37 Times in 30 Posts
I dont know if zinc chromate is a good idea as its pretty toxic, even though airplanes are full of the stuff. I think plain old epoxy would be better, you never hear of Shelby cobras corroding that much , course they probably aren't used in the snow or you could just insulate the two where they might get moisture between them.
  Reply With Quote
Old 02-09-2013, 11:00 PM   #534 (permalink)
Master EcoModder
 
NeilBlanchard's Avatar
 
Join Date: May 2008
Location: Maynard, MA Eaarth
Posts: 5,752

Mica Blue - '05 Scion xA RS 2.0
Team Toyota
90 day: 50.88 mpg (US)

Forest - '15 Nissan Leaf S
90 day: 129.51 mpg (US)
Thanks: 1,189
Thanked 1,299 Times in 784 Posts
This car looks like an attempt to copy the Panhard LM64.
__________________
Sincerely, Neil

http://neilblanchard.blogspot.com/
  Reply With Quote
Old 02-10-2013, 06:23 AM   #535 (permalink)
Master EcoModder
 
California98Civic's Avatar
 
Join Date: Mar 2011
Location: Coastal Southern California
Posts: 2,976

Black and Green - '98 Honda Civic DX Coupe
Team Honda
Boat tails and more mods
90 day: 64.91 mpg (US)
Thanks: 1,062
Thanked 697 Times in 459 Posts
Quote:
Originally Posted by NeilBlanchard View Post
This car looks like an attempt to copy the Panhard LM64.
Another cool image of that car:
__________________


GOALS FOR THE SUMMER POSTED HERE

See my MODDING THREAD for ongoing projects. Black and Green's garage entry has more details. I plan to DIY rebuild this car over decades as parts die--replacing or modding small and major parts until it becomes a different car of roughly the same shape. My fuel economy goal is 60+ mpg while averaging posted speed limits.
  Reply With Quote
The Following User Says Thank You to California98Civic For This Useful Post:
aerohead (11-08-2013)
Old 02-10-2013, 07:10 AM   #536 (permalink)
Master EcoModder
 
kach22i's Avatar
 
Join Date: Jul 2011
Location: Ann Arbor, Michigan
Posts: 1,729
Thanks: 3
Thanked 817 Times in 617 Posts
Quote:
Originally Posted by orbywan View Post
The question is this; you've aluminum skin over a steel frame. How do you keep dissimilar metal corrosion at a minimum or eliminate it?
Spend the rest of the weekend on Google and research the heck out of the topic.

Caulk and adhesives will be heavy, but will also have benefits of preventing air and water infiltration by sealing the joints.

Building paper (roofing felt) will also be heavy. Tyvek will be much lighter, perhaps it can be spray mounted to the back of the aluminum prior to mounting.

Sound absorption materials will be expensive in addition to being heavy, but also have attractive attributes such as insulative qualities.

Perhaps a double sided tape will allow you to mount, seal and separate the two materials without additional mechanical fasteners. Call up the 3M technical assistance people and see what they recommend.

You also have weird things such as "insulative paints " which may be an option worth researching.

You just need a "bond breaker", but be aware that moisture and condensation can transfer chemicals between the two metals allowing a small degree of migration. Not as much damage as bare contact, but nothing is perfect short of total encapsulation (epoxy paint?).
__________________
George
Architect, Artist and Designer of Objects

1977 Porsche 911s Targa
1998 Chevy S-10 Pick-Up truck
1989 Scat II HP Hovercraft

Chin Spoiler:
http://forums.pelicanparts.com/off-t...effective.html

Rear Spoiler Pick Up Truck
http://forums.pelicanparts.com/off-t...xperiment.html

Roof Wing
http://ecomodder.com/forum/showthrea...1-a-19525.html

Last edited by kach22i; 02-10-2013 at 07:17 AM..
  Reply With Quote
Old 02-12-2013, 11:19 AM   #537 (permalink)
Ride your bike!
 
Sven7's Avatar
 
Join Date: Aug 2011
Location: Warren, MI
Posts: 2,176

Boo Radley - '65 Ford F100
90 day: 13.7 mpg (US)
Thanks: 680
Thanked 513 Times in 320 Posts
THIS SITE IS GOLD. OMG.

Inter Action















__________________
I'm building a strange bicycle.
  Reply With Quote
The Following User Says Thank You to Sven7 For This Useful Post:
aerohead (11-08-2013)
Old 02-12-2013, 01:26 PM   #538 (permalink)
Do more with less
 
Join Date: Jul 2010
Location: North Eastern Missouri
Posts: 887

OD - '05 Ford Econoline
90 day: 18.64 mpg (US)

Joetta - '86 Volkswagen Jetta Turbo Oil Burner
TEAM VW AUDI Group
90 day: 49.71 mpg (US)

Benzilla - '85 Mercedes Benz 300D
90 day: 28.08 mpg (US)
Thanks: 55
Thanked 154 Times in 95 Posts
My bicycle is on the the first page.
Quote:
Originally Posted by Sven7 View Post
THIS SITE IS GOLD. OMG.
__________________
"A man is not finished when he is defeated. He is finished when he quits."
Richard M. Nixon


"The reward of suffering is experience."
Harry S. Truman

“There's no way to rule innocent men. The only power any government has is the power to crack down on criminals. Well, when there aren't enough criminals, one makes them. One declares so many things to be a crime that it becomes impossible for men to live without breaking laws.”
Ayn Rand
  Reply With Quote
The Following User Says Thank You to Varn For This Useful Post:
Sven7 (02-12-2013)
Old 02-12-2013, 01:38 PM   #539 (permalink)
EcoModding Apprentice
 
Join Date: Jan 2008
Location: SF Bay Area
Posts: 150

Silver Bullet - '02 VW Golf TDi
Thanks: 5
Thanked 16 Times in 11 Posts
Quote:
Originally Posted by Varn View Post
My bicycle is on the the first page.
Which one...the "Varna Diablo"?
__________________
Best tank ever: 72.1 mpg in February 2005, Seattle to S.F.
New personnal best 'all-city' tank June '08 ... 61.9 mpg!
Thanks to 'pulse-n-glide' technique.
  Reply With Quote
Old 02-12-2013, 01:46 PM   #540 (permalink)
Do more with less
 
Join Date: Jul 2010
Location: North Eastern Missouri
Posts: 887

OD - '05 Ford Econoline
90 day: 18.64 mpg (US)

Joetta - '86 Volkswagen Jetta Turbo Oil Burner
TEAM VW AUDI Group
90 day: 49.71 mpg (US)

Benzilla - '85 Mercedes Benz 300D
90 day: 28.08 mpg (US)
Thanks: 55
Thanked 154 Times in 95 Posts
It is listed with the diablo but it is called the Varna2. An older version of the diablo that I modified to diablo specs. It has been to 62 mph as the original version ridden by Sam in the early 90s.

My modified version went to 66.6 powered by a woman, Lisa Vetterlein. It broke the record in 2005.

Later we had it ridden by a guy, Rob English, who did some efforts in one hour competition with some success, setting a British record. It is hanging on my wall somewhat like a hunter who would hang the head of his rhino.

If the right circumstances were to pop up. It could be brought down off the wall and raced again. Not a bad career for a bicycle. Top mens record and top womans record.

__________________
"A man is not finished when he is defeated. He is finished when he quits."
Richard M. Nixon


"The reward of suffering is experience."
Harry S. Truman

“There's no way to rule innocent men. The only power any government has is the power to crack down on criminals. Well, when there aren't enough criminals, one makes them. One declares so many things to be a crime that it becomes impossible for men to live without breaking laws.”
Ayn Rand
  Reply With Quote
The Following 3 Users Say Thank You to Varn For This Useful Post:
aerohead (02-16-2013), Frank Lee (02-12-2013), TEiN (02-13-2013)
Reply  Post New Thread

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Electric Cars Push Japan Engine Parts Makers to Crisis Mode tjts1 The Lounge 14 12-23-2012 12:47 PM
Name that Eco Car! Quiz: identify these aerodynamic production cars MetroMPG Aerodynamics 16 08-30-2009 05:24 AM




Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com