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

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 05-13-2015, 01:50 PM   #1 (permalink)
EcoModding Lurker
 
Join Date: Nov 2013
Location: lakewood, co, usa
Posts: 53

subey - '99 Subaru Impreza Outback Sport

rav4 - '07 Toyota Rav4
Thanks: 3
Thanked 1 Time in 1 Post
cargo van additions

Ram Promaster cargo van, converting to a campervan. I'd like to keep the aero clean, and not make this tall beast any worse than it is. I'm getting about 25mpg, diesel. I'm not going to put the typical awning on it. However, I'm finding it hard to resist the roof fan. They are about 15x15, one would be only 3" high flat top (fantastic fan with flat top), 3-3/4" rounded top (maxxfan standard), the most aero looking one is 5" high (maxxfan deluxe).
Any educated guess as to how much of an impact this will be?

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 05-13-2015, 06:10 PM   #2 (permalink)
PSmodder lurker
 
Join Date: Jan 2009
Location: Chino
Posts: 1,520
Thanks: 23
Thanked 791 Times in 459 Posts
Like that MaxxFan deluxe, aero-design 3-in-1 solution. MaxxFan Deluxe Remote Control RV Ventilator System, Smoke Lid - Maxxair 00-07500K - Vents - Camping World
  Reply With Quote
The Following User Says Thank You to botsapper For This Useful Post:
BamZipPow (05-13-2015)
Old 05-14-2015, 04:56 AM   #3 (permalink)
EcoModding Apprentice
 
Join Date: Apr 2015
Location: USA
Posts: 148

VanDelay - '89 Ford Econoline E-150 XL
90 day: 15.93 mpg (US)

Old White Civic - '98 Honda Civic LX, AT
90 day: 33.18 mpg (US)
Thanks: 5
Thanked 49 Times in 43 Posts
The maxxfan deluxe is my intended unit for my econoline van. Being able to use it closed or open while in transit plus the aero are my reasons
  Reply With Quote
Old 05-14-2015, 07:53 AM   #4 (permalink)
Master EcoModder
 
slowmover's Avatar
 
Join Date: Oct 2009
Location: Fort Worth, Texas
Posts: 2,356

2004 CTD - '04 DODGE RAM 2500 SLT
Team Cummins
90 day: 19.36 mpg (US)
Thanks: 1,342
Thanked 681 Times in 517 Posts
Maxxfan. There'll be three of them on my travel trailer in the near future. Same for newer solar panels, a different air conditioner and maybe a slew of antennas. In other words, don't worry about it.

Planning engine run time is the game for an RV.
__________________
2004.0 DODGE Ram QC/LB 2500 2WD/NV-5600 305/555 ISB. 7,940-lb. Stock. 200,000 miles/5000-hrs @ 40-mph average.
1990 35' Silver Streak TT 7,900-lb.
11-cpm solo & 19-cpm towing; 21-mpg average past 54k-miles
Sold: 1983 Silver Streak 3411
  Reply With Quote
Old 05-18-2015, 03:01 PM   #5 (permalink)
EcoModding Lurker
 
Join Date: Nov 2013
Location: lakewood, co, usa
Posts: 53

subey - '99 Subaru Impreza Outback Sport

rav4 - '07 Toyota Rav4
Thanks: 3
Thanked 1 Time in 1 Post
Quote:
Originally Posted by slowmover View Post
Maxxfan. There'll be three of them on my travel trailer in the near future. Same for newer solar panels, a different air conditioner and maybe a slew of antennas. In other words, don't worry about it.

Planning engine run time is the game for an RV.
It looks like you're hoping to get 10mpg, I'm getting 25.


I'm thinking the flat top fantastic fan with some extra wind faring would be better than the much taller round top models.
  Reply With Quote
Old 05-18-2015, 03:11 PM   #6 (permalink)
Master EcoModder
 
Join Date: Feb 2014
Location: Missoula, MT
Posts: 1,818

Dark Egg - '12 VW Touareg TDI Sport AWD
90 day: 25.81 mpg (US)
Thanks: 129
Thanked 664 Times in 452 Posts
I planned on adding some epoxy over styrofoam fastback tapers behind my roof vents and maybe a 1/4 round cylinder in front, same thing with the awning and plumbing vent.

My tow vehicle only gets 18 not towing so I'm hoping for 15-16 but that's with less expensive 87 octain. If my weight ends up under 3500 pounds I may try it with the minivan which gets over 25 and hope for 20 towing.

I researched those Ram Promasters and the new Ford equivalent. The Ram did seem like a better deal and I like the FWD. Did you get the highest top version? There are 3 height choices right?
  Reply With Quote
Old 05-18-2015, 04:57 PM   #7 (permalink)
It's all about Diesel
 
cRiPpLe_rOoStEr's Avatar
 
Join Date: Oct 2012
Location: Porto Alegre, Rio Grande do Sul, Brazil
Posts: 7,374
Thanks: 0
Thanked 761 Times in 672 Posts
Quote:
Originally Posted by Hersbird View Post
I researched those Ram Promasters and the new Ford equivalent. The Ram did seem like a better deal and I like the FWD.
Many people still have their objections towards FWD in commercial applications, but that's somewhat pointless. One obvious advantage is the lesser weight of the driveline, while the lower floor also leads to other practical benefits and leaves room for improvements regarding aerodynamics too, since it leads an externally-lower FWD van to have a cargo volume comparable to a RWD one.
  Reply With Quote
Old 05-18-2015, 05:32 PM   #8 (permalink)
Rat Racer
 
Fat Charlie's Avatar
 
Join Date: May 2011
Location: Route 16
Posts: 3,390

Al the Third, year four - '13 Honda Fit Base
Team Honda
90 day: 42.9 mpg (US)
Thanks: 1,303
Thanked 1,437 Times in 917 Posts
I think it's two heights and three wheelbases.
__________________

Quote:
Originally Posted by sheepdog44 View Post
Transmission type Efficiency
Manual neutral engine off.100% @MPG <----- Fun Fact.
Manual 1:1 gear ratio .......98%
CVT belt ............................88%
Automatic .........................86%

  Reply With Quote
Old 05-18-2015, 05:52 PM   #9 (permalink)
Master EcoModder
 
Join Date: Feb 2014
Location: Missoula, MT
Posts: 1,818

Dark Egg - '12 VW Touareg TDI Sport AWD
90 day: 25.81 mpg (US)
Thanks: 129
Thanked 664 Times in 452 Posts
Quote:
Originally Posted by Fat Charlie View Post
I think it's two heights and three wheelbases.
I see the Ford has 3 heights, that is what I must have been thinking.
Then there is this

So maybe there is just a USA unavailable roof type
  Reply With Quote
The Following User Says Thank You to Hersbird For This Useful Post:
aerohead (05-18-2015)
Old 05-18-2015, 10:32 PM   #10 (permalink)
EcoModding Lurker
 
Join Date: Nov 2013
Location: lakewood, co, usa
Posts: 53

subey - '99 Subaru Impreza Outback Sport

rav4 - '07 Toyota Rav4
Thanks: 3
Thanked 1 Time in 1 Post
I have the high roof. I think there is a taller one that is not available here.

  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