12-26-2017, 12:09 PM
|
#981 (permalink)
|
|
T-100 Road Warrior
Join Date: Apr 2008
Location: The Woodlands, TX
Posts: 1,921
Thanks: 3,502
Thanked 1,395 Times in 968 Posts
|
Current run to Lincoln NE with heavy snow dragged my speed down to 25mph during the last half of the trip. Mileage suffered a big hit down to about 21mpg. Snow and ice built up inside the wheel pant and expanded the sides out. I will probably need to remove either the ice build up or the wheel pant so I can continue my travels. 
__________________
Dark Aero-The world's first aerodynamic single wheel boat tail!
|
|
|
|
|
The Following User Says Thank You to BamZipPow For This Useful Post:
|
|
 Today
|
|
|
|
Other popular topics in this forum...
|
|
|
|
|
12-26-2017, 01:23 PM
|
#982 (permalink)
|
|
Master EcoModder
Join Date: Aug 2012
Location: northwest of normal
Posts: 28,493
Thanks: 8,059
Thanked 8,860 Times in 7,314 Posts
|
Road [torture] testing continues.
An electrically heated rear wheel pant?
__________________
.
.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
____________________
.
.Three conspiracy theorists walk into a bar --You can't say that is a coincidence.
|
|
|
|
|
The Following 2 Users Say Thank You to freebeard For This Useful Post:
|
|
|
12-26-2017, 02:06 PM
|
#983 (permalink)
|
|
Master EcoModder
Join Date: Dec 2014
Location: Butte, Montana
Posts: 726
Thanks: 208
Thanked 428 Times in 279 Posts
|
Ice in your pants!!! No fun. Theas environmental constraints play a major roll in desine,for me . Growing up near Yosemite and having the rear tires lock from snow accumulation in open wheel wells on a fwd car.
__________________
1st gen cummins 91.5 dodge d250 ,HX35W/12/6 QSV
ehxsost manafulld wrap, Aero Tonto
best tank: distance 649gps mi 24.04 mpg 27.011usg
Best mpg : 31.32mpg 100mi 3.193 USG 5/2/20
Former
'83 GMC S-15 Jimmy 2door 2wd O/D auto 3.73R&P
'79 Chevy K20 4X4 350ci 400hp msd custom th400 /np205. 7.5-new 14mpg modded befor modding was a thing
87' Hyundai Excel
83 ranger w/87 2.9 L FI2wd auto 18mpg on the floor
04 Mitsubishi Gallant 2.4L auto 26mpg
06 Subaru Forrester XT(WRX PACKAGE) MT AWD Turbocharged 18 plying dirty best of 26mpg@70mph
95Chevy Blazer 4x4 auto 14-18mpg
04 Chevy Blazer 4x4 auto 16-22mpg
|
|
|
|
|
The Following 2 Users Say Thank You to gumby79 For This Useful Post:
|
|
|
12-27-2017, 12:01 AM
|
#984 (permalink)
|
|
Master EcoModder
Join Date: Aug 2012
Location: northwest of normal
Posts: 28,493
Thanks: 8,059
Thanked 8,860 Times in 7,314 Posts
|
__________________
.
.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
____________________
.
.Three conspiracy theorists walk into a bar --You can't say that is a coincidence.
|
|
|
|
|
The Following 2 Users Say Thank You to freebeard For This Useful Post:
|
|
|
12-28-2017, 02:32 AM
|
#985 (permalink)
|
|
T-100 Road Warrior
Join Date: Apr 2008
Location: The Woodlands, TX
Posts: 1,921
Thanks: 3,502
Thanked 1,395 Times in 968 Posts
|
Quote:
Originally Posted by freebeard
Road [torture] testing continues.
An electrically heated rear wheel pant?
|
Road torture is correct! I think I will have to remove the wheel pant if there is any snow forcasted during my travels in those regions. I don't believe there is a real good design compromise that would allow aerodynamics and snow build up/dispersion at the same time without affecting the performance of either requirement. 
The only real way I could heat up that portion would be to divert the exhaust to that area. With my limited budget and knowledge, there's no way I could make it electrically heated.
__________________
Dark Aero-The world's first aerodynamic single wheel boat tail!
|
|
|
|
|
The Following User Says Thank You to BamZipPow For This Useful Post:
|
|
|
12-28-2017, 02:36 AM
|
#986 (permalink)
|
|
T-100 Road Warrior
Join Date: Apr 2008
Location: The Woodlands, TX
Posts: 1,921
Thanks: 3,502
Thanked 1,395 Times in 968 Posts
|
Quote:
Originally Posted by gumby79
Ice in your pants!!! No fun. Theas environmental constraints play a major roll in desine,for me . Growing up near Yosemite and having the rear tires lock from snow accumulation in open wheel wells on a fwd car.
|
Since this was the first time of playing in snow with an installed wheel pant (previous run to Iowa in the snow about 3 years ago was without a wheel pant), my simple design allowed the snow to blow out the sides. However, the snow did eventually accumulate on the tail portion and dragged it down. It bent the support rails which wasn't designed to withstand that amount of added mass. At least it gave me some ideas on how to better support the tail as well as making it easier to remove.
__________________
Dark Aero-The world's first aerodynamic single wheel boat tail!
|
|
|
|
|
The Following User Says Thank You to BamZipPow For This Useful Post:
|
|
|
12-28-2017, 02:52 AM
|
#987 (permalink)
|
|
It's all about Diesel
Join Date: Oct 2012
Location: Porto Alegre, Rio Grande do Sul, Brazil
Posts: 12,864
Thanks: 0
Thanked 1,683 Times in 1,501 Posts
|
Quote:
Originally Posted by BamZipPow
The only real way I could heat up that portion would be to divert the exhaust to that area.
|
Considering that most commercial aircraft nowadays rely on hot air bled out of the compressor, maybe it wouldn't be so pointless to use the heat from the exhaust flow to de-ice that area. I know it may sound like comparing apples to oranges, but you could try it. But it would require you to make an adjustable exhaust diffuser to blast hot exhaust gases in that area only when the heat is needed.
Quote:
|
With my limited budget and knowledge, there's no way I could make it electrically heated.
|
There might be some reasonably cost-effective way to heat it electrically. Why not try some heater pad like those ones that some people are using to heat the oil sump? |
|
|
|
|
The Following 2 Users Say Thank You to cRiPpLe_rOoStEr For This Useful Post:
|
|
|
12-28-2017, 10:57 AM
|
#988 (permalink)
|
|
Aero Wannabe
Join Date: Dec 2007
Location: NW Colo
Posts: 738
Thanks: 705
Thanked 219 Times in 170 Posts
|
Quote:
Originally Posted by cRiPpLe_rOoStEr
There might be some reasonably cost-effective way to heat it electrically. Why not try some heater pad like those ones that some people are using to heat the oil sump?
|
Wouldn't the amp draw on the alternator more than offset any minor gains in aero?
__________________
60 mpg hwy highest, 50+mpg lifetime
TDi=fast frugal fun 
https://ecomodder.com/forum/showthre...tml#post621801
Quote:
Originally Posted by freebeard
The power needed to push an object through a fluid increases as the cube of the velocity. Mechanical friction increases as the square, so increasing speed requires progressively more power.
|
|
|
|
|
|
The Following 2 Users Say Thank You to COcyclist For This Useful Post:
|
|
|
12-29-2017, 07:52 PM
|
#989 (permalink)
|
|
It's all about Diesel
Join Date: Oct 2012
Location: Porto Alegre, Rio Grande do Sul, Brazil
Posts: 12,864
Thanks: 0
Thanked 1,683 Times in 1,501 Posts
|
Quote:
Originally Posted by COcyclist
Wouldn't the amp draw on the alternator more than offset any minor gains in aero?
|
I'm not sure about it, but maybe the aerodynamic gains can still ofset the energy consumption. The efficiency of the heater might also play a major role on that matter. |
|
|
|
|
The Following 2 Users Say Thank You to cRiPpLe_rOoStEr For This Useful Post:
|
|
|
12-29-2017, 08:32 PM
|
#990 (permalink)
|
|
T-100 Road Warrior
Join Date: Apr 2008
Location: The Woodlands, TX
Posts: 1,921
Thanks: 3,502
Thanked 1,395 Times in 968 Posts
|
Well...keep in mind that I don't plan on driving in snow with Dark Aero attached in the foreseeable future. It would be easier and simpler to just remove the wheel pant if it looks like snow is in my driving range.
At least it was fun seeing what would happen.
__________________
Dark Aero-The world's first aerodynamic single wheel boat tail!
|
|
|
|
|
The Following User Says Thank You to BamZipPow For This Useful Post:
|
|
|
