jennrod12
Posts: 230
Joined: Sat Feb 11, 2012 8:51 pm
Location: Santa Clara, CA

Wheel covers

Tue Mar 20, 2012 10:14 am

I found this link on another forum: http://www.mooneyesusa.com/shop/product.php?products_id=473 It's for disk-like wheel covers. Looks aerodynamic, but I question if this would make the brakes heat up too much?

Image

Jenn
2012 Diamond White i-MiEV ES
with green racing stripes and hubcaps (thanks to WeeJohn)
Santa Clara, CA

rokeby
Posts: 31
Joined: Thu Dec 29, 2011 12:51 pm
Location: Ballamer, Merlin

Re: Wheel covers

Tue Mar 20, 2012 1:16 pm

This topic recently came up at mynissanleaf.com recently too.
Here is what I posted there:

Driving a Prius -- or any car for that matter -- for better than EPA fuel economy
typically involves using a tactic called "driving without brakes." Of course you do
have brakes, but you allow for some extra space ahead and try to anticipate stops
well ahead so that you can glide up to it. Better yet, if you're good enough or lucky
enough to time stop lights correctly, you roll right on through.

Driven like this the Prius brakes get hardly warm to the touch.
Granted, regen has a lot to do with it. Driven carefully, the hydraulic brakes only
come into play as the car slows to ~8 MPH. Quite a few Prius drivers have installed
aero wheel covers without brake overheating issues.

Wouldn't this same situation also apply to the LEAF?

It's also a frequent DIY modification at ecomodder.com for non-hybrid
cars. (They prefer flat disks made from Coroplast plastic; think political campaign
signs.) Other than some creativity needed in installing the full covers, I can't recall
any difficulties or reported instances of brake overheating.

At any rate, you pays your money and takes your chances.

FWIW, I drive an '08 Prius with 50.2 MPG over 65K miles.


FWIW, if you look closely at the picture posted, these wheel covers are held on by
drilling and tapping holes directly into the rims. Most folks will not want to do that.
IIRC, MoonEyes also has these covers with the spring tabs around the perimeter
meant to lock into the groove that the OEM covers use. All well and good, but...
I have read on multiple forums that the spring tab covers have a reputation for
coming off when the car is underway.

Just thought that you ought to know.

Here's the whole thread if you want to read more:
Aero Wheel Covers

JoeS
Site Moderator
Posts: 3842
Joined: Thu Dec 15, 2011 5:47 am
Location: Silicon Valley, California

Re: Wheel covers

Wed Mar 21, 2012 8:57 am

Hi Jenn,
A few years ago I had installed a couple of these on my Gen1 Insight seeking better aerodynamic efficiency. Drilled and tapped the wheel. Over about a year there was enough movement between the disk and the wheel that the disk gradually damaged the finish on the wheel where they were touching on the perimeter. I finally took the disks off. If you install these, I would put some very thin foam insulation on the perimeter to prevent the scratches. To answer your question, with our iMiEV's superb regen, I find it difficult to imagine our brakes ever heating up enough s.t. the restricted airflow would be a concern.
Image
EVs: 2 Wht/Blu SE Prem., '13 Tesla MS85, 3 156v CorbinSparrows (2 Li-ion), 24v EcoScoot(LiFePO4)
EV Conv: 156v '86 Ram PU, 144v '65 Saab 96
Hybrids: 48v1kW bike
ICE: '88 Isuzu Trooper. Mothballed: '67 Saab (orig.owner), '76 MBZ L206D RHD RV

jray3
Posts: 1691
Joined: Tue Dec 06, 2011 1:05 am
Location: Tacoma area, WA
Contact: Website

Re: Wheel covers (SE Drivers, eat your heart out!)

Thu Apr 05, 2012 2:34 am

So I got the spun stainless 'salt flat discs', and not the screw-mounted either, but spring tabs. I stayed away from JC Whitney and spent a bit more for the CCI brand, and am quite pleased with the heavy gauge stainless disc and precise spring tabs with a recess for the valve stem. They locked into the rim quite nicely, and my only worry now is how difficult they will be to remove! I expected the look to be good, but am even more pleased with the result.
Image
http://silverslipperimiev.shutterfly.com/pictures/11
2012 i-SE "MR BEAN" 110,300 miles
2016 KIA SOUL EV, 90 kW, 27 kWh, 34k miles
2000 Mazda Miata EV, 78 kW, 17 kWh
1983 Grumman Kurbwatt EV,170 kW, 32 kWh
1983 Mazda RX-7 EV 43 kW 10 kWh
1971 "Karmann Eclectric" EV 240 kW 19 kWh

jennrod12
Posts: 230
Joined: Sat Feb 11, 2012 8:51 pm
Location: Santa Clara, CA

Re: Wheel covers

Sun Apr 08, 2012 5:49 pm

jray3,

That sounds great, I really want to see the picture, but Shutterfly says it is marked "private" and I need to sign up to see it. Is there a way to mark it "public"?

Thanks!

Jenn
2012 Diamond White i-MiEV ES
with green racing stripes and hubcaps (thanks to WeeJohn)
Santa Clara, CA

jray3
Posts: 1691
Joined: Tue Dec 06, 2011 1:05 am
Location: Tacoma area, WA
Contact: Website

Re: Wheel covers

Thu Apr 12, 2012 11:38 am

Sorry Jenn, I think I got the link fixed now. The wheel covers really grow on ya. From old aero studies I'm hypotheizing that the Cd has been reduced by about 0.017. May have discovered one downside to the solid discs, which is a pebble rattling around inside. :lol: That just happened this morning, hopefully it will fall back out through the slotted wheel before long. At over about 10 mph the pebble stops rattling. See- who needs a fancy-schmancy Electronic Pedestrian Alert System!
2012 i-SE "MR BEAN" 110,300 miles
2016 KIA SOUL EV, 90 kW, 27 kWh, 34k miles
2000 Mazda Miata EV, 78 kW, 17 kWh
1983 Grumman Kurbwatt EV,170 kW, 32 kWh
1983 Mazda RX-7 EV 43 kW 10 kWh
1971 "Karmann Eclectric" EV 240 kW 19 kWh

jennrod12
Posts: 230
Joined: Sat Feb 11, 2012 8:51 pm
Location: Santa Clara, CA

Re: Wheel covers

Thu Apr 12, 2012 1:05 pm

Argh - it still wants me to create a shutterfly account and log in first.

Jenn
2012 Diamond White i-MiEV ES
with green racing stripes and hubcaps (thanks to WeeJohn)
Santa Clara, CA

jray3
Posts: 1691
Joined: Tue Dec 06, 2011 1:05 am
Location: Tacoma area, WA
Contact: Website

Re: Wheel covers

Thu Apr 12, 2012 8:05 pm

Otay, if you wanna see something right, you gotta blog it yourself! I thought that Shutterfly might be an easier way to share photos... Here's the i with disc wheel covers in daylight.
http://karmanneclectric.blogspot.com/2012/03/to-make-jelly-bean-fly.html
2012 i-SE "MR BEAN" 110,300 miles
2016 KIA SOUL EV, 90 kW, 27 kWh, 34k miles
2000 Mazda Miata EV, 78 kW, 17 kWh
1983 Grumman Kurbwatt EV,170 kW, 32 kWh
1983 Mazda RX-7 EV 43 kW 10 kWh
1971 "Karmann Eclectric" EV 240 kW 19 kWh

jennrod12
Posts: 230
Joined: Sat Feb 11, 2012 8:51 pm
Location: Santa Clara, CA

Re: Wheel covers

Fri Apr 13, 2012 1:46 pm

Those wheel covers look nice, I may just have to get some!

Jenn
2012 Diamond White i-MiEV ES
with green racing stripes and hubcaps (thanks to WeeJohn)
Santa Clara, CA

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