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

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 04-15-2012, 02:22 PM   #1 (permalink)
Wiki Mod
 
Weather Spotter's Avatar
 
Join Date: Nov 2009
Location: Midland MI, USA
Posts: 2,042

Max - '14 Ford C-Max SEL
Thanks: 228
Thanked 304 Times in 210 Posts
neighborhood going to the tails (spotted a 2nd gen. Prius with a boattail on my road)

Well its true, I now live on a 2 mile rural road with two boat tails!

My matrix:


His Prius :








I stopped by today after church and talked with the neighbor about our tails. He is still working on it but it looks great so far! As of this point he is still a lurker but I recommended forum membership and a build thread I will not spoil all the details so he can start his own thread or take over this one.

I can say its cheap, effective and easy to take on and off and the work is not done. The light area is next on his to do list.

What are your thoughts on the bottom angle?

__________________
  Reply With Quote
The Following 17 Users Say Thank You to Weather Spotter For This Useful Post:
aerohead (04-16-2012), BamZipPow (07-05-2012), Bugzilla (10-07-2013), Cd (04-15-2012), cfg83 (07-05-2012), HyperMileQC (02-20-2013), jime57 (07-06-2012), landsailor (07-06-2012), mcrews (07-04-2012), meidou (07-09-2012), MetroMPG (04-15-2012), NeilBlanchard (07-05-2012), OG VX (12-12-2014), Piwoslaw (04-15-2012), Sven7 (07-05-2012), whatmaycome14 (10-16-2015), wyatt (07-29-2012)
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 04-15-2012, 02:29 PM   #2 (permalink)
Master EcoModder
 
skyking's Avatar
 
Join Date: Apr 2011
Location: Tacoma WA
Posts: 1,265

Woody - '96 Dodge Ram 2500 SLT
Team Cummins
90 day: 23.82 mpg (US)

Avion and Woody - '96 Dodge/Avion Ram 2500/5th wheel combo
90 day: 15.1 mpg (US)

TD eye eye eye - '03 Volkswagen Beetle GLS
90 day: 49.05 mpg (US)

Mule - '07 Dodge Ram 3500 ST
Thanks: 545
Thanked 452 Times in 291 Posts
My thoughts are, how fantastic to have some company in the modding.
__________________




2007 Dodge Ram 3500 SRW 4x4 with 6MT
2003 TDI Beetle
2002 TDI Beetle

currently parked - 1996 Dodge 2500 Cummins Turbodiesel
Custom cab, auto, 3.55 gears
  Reply With Quote
The Following 3 Users Say Thank You to skyking For This Useful Post:
mcrews (07-04-2012), OG VX (12-12-2014), Sven7 (07-05-2012)
Old 04-15-2012, 02:41 PM   #3 (permalink)
Wiki Mod
 
Weather Spotter's Avatar
 
Join Date: Nov 2009
Location: Midland MI, USA
Posts: 2,042

Max - '14 Ford C-Max SEL
Thanks: 228
Thanked 304 Times in 210 Posts
The cool thing is that he was going to stop by today and I stopped over at his place first

I think seeing my car got the idea gears Turing in his mind (I might be mistaken but I think that is what he said).
__________________
  Reply With Quote
Old 04-15-2012, 03:31 PM   #4 (permalink)
Cd
Ultimate Fail
 
Cd's Avatar
 
Join Date: Feb 2008
Location: Austin,Texas
Posts: 3,033
Thanks: 2,258
Thanked 755 Times in 438 Posts
Awesomeness !

I was wondering who was going to be first to mod a Prius with a 'tail.
__________________
"You don't fail until you give up. You learn, and move on." - Christ

" Hypermiling is not going slow, it's driving with more intelligence." - UFO

Last edited by Cd; 04-15-2012 at 03:37 PM..
  Reply With Quote
Old 04-15-2012, 03:34 PM   #5 (permalink)
Cd
Ultimate Fail
 
Cd's Avatar
 
Join Date: Feb 2008
Location: Austin,Texas
Posts: 3,033
Thanks: 2,258
Thanked 755 Times in 438 Posts
I notice he even has the box cavity at the rear of the tail.

Those edges have me worried though, since they are not radiused, but I'm sure that's in the making !
__________________
"You don't fail until you give up. You learn, and move on." - Christ

" Hypermiling is not going slow, it's driving with more intelligence." - UFO
  Reply With Quote
Old 04-15-2012, 04:46 PM   #6 (permalink)
Wiki Mod
 
Weather Spotter's Avatar
 
Join Date: Nov 2009
Location: Midland MI, USA
Posts: 2,042

Max - '14 Ford C-Max SEL
Thanks: 228
Thanked 304 Times in 210 Posts
I think it is in progress, He said he was working on a clear cover for the tail lights to smooth out air flow.

The back is open as the bottom needs to be fully closed in. we were both unsure if this might be a good feature?
__________________
  Reply With Quote
Old 04-15-2012, 06:28 PM   #7 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 20,947

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
Last 3: 51.27 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 73.57 mpg (US)
Thanks: 2,762
Thanked 5,637 Times in 2,904 Posts
Aeromodder see, aeromodder do.

My first thought: fantastic!

Quote:
Originally Posted by Cd View Post
Those edges have me worried though, since they are not radiused,
That was my second thought.

Third thought: I look at the "step" from the OEM spoiler down to the tail, and it appears it was done on purpose so as not to cover up the center-mounted brake light. I do wonder about flow separation at that point though. I'd definitely want to tuft it to see the effect on flow on the tail.

Bottom angle looks OK to me. My own experimenting showed that there's not likely going to be attached flow on the bottom of the tail, regardless of how gentle the angle of its rise - unless there's a full belly pan ahead of it anyway.

I'm really looking forward to hearing about the project & results from the builder!
__________________
Latest mods test: 15 mods = 15% MPG improvement: A-B test, 2007 Honda Civic 1.8L, 5-speed
Ecodriving test:
Manual vs. automatic transmission MPG showdown: Nissan Micra 1.6L



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote
The Following User Says Thank You to MetroMPG For This Useful Post:
Sven7 (07-05-2012)
Old 04-15-2012, 06:29 PM   #8 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 20,947

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
Last 3: 51.27 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 73.57 mpg (US)
Thanks: 2,762
Thanked 5,637 Times in 2,904 Posts
(PS - hope you don't mind I fleshed out the thread title a bit to make it more "scan" and search engine friendly.)
__________________
Latest mods test: 15 mods = 15% MPG improvement: A-B test, 2007 Honda Civic 1.8L, 5-speed
Ecodriving test:
Manual vs. automatic transmission MPG showdown: Nissan Micra 1.6L



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote
The Following User Says Thank You to MetroMPG For This Useful Post:
aerohead (07-05-2012)
Old 04-15-2012, 07:15 PM   #9 (permalink)
Wiki Mod
 
Weather Spotter's Avatar
 
Join Date: Nov 2009
Location: Midland MI, USA
Posts: 2,042

Max - '14 Ford C-Max SEL
Thanks: 228
Thanked 304 Times in 210 Posts
Quote:
Originally Posted by MetroMPG View Post
(PS - hope you don't mind I fleshed out the thread title a bit to make it more "scan" and search engine friendly.)
no problem, good titles are not my strong suit.

the sides match the sides on the Prius pretty well, not sure rounding will gain much. But He said that this very much a work in progress.

He did design the tail not to cover up the third light. I mentioned that this was a big problem area, and he came up with an idea on the spot, match the height and add a clear section so the light is still visible. I hope he does it and joins up, his ideas on mounting the tail are fantastic. I bet with some pics of how he did it several others would be able to make removable tails for trips and take them on and off in 4-5 min.

He can detail costs better then I but lets just say what he has so far is several factors cheaper compared to the $300 or so I spent on mine.

His one week best estimate of results are very impressive too (I will let him share the scoop on that)

side question, how much benefit will a full belly pan do for me? I know the back 4 feet of my cars underside is a disaster, and to fix it will require a full pan about an inch lower then the underside is right now.
__________________
  Reply With Quote
Old 07-04-2012, 05:42 PM   #10 (permalink)
MPG Militia HMV-25E80+A
 
JethroBodine's Avatar
 
Join Date: Mar 2011
Location: Vermont, USA
Posts: 823

FrankenJetta D - '90 Volkswagen Jetta GL
Boat tails and more mods
Diesel
TEAM VW AUDI Group
90 day: 64.35 mpg (US)
Thanks: 191
Thanked 143 Times in 98 Posts
Hey Spotter- I just found this thread, and that is great. I haven't seen any new Prius build threads, so I'm guessing your neighbor hasn't joined yet(unless I missed it). Any new developments?

__________________


Quote:
It is always very amusing how our imagination is put to the test when overcoming reality. Redyaris
Boat tail project
How to gently bump start during EOC
  Reply With Quote
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com