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-   -   El Mirage Dry Lake Bed (Southern California) (https://ecomodder.com/forum/showthread.php/el-mirage-dry-lake-bed-southern-california-12053.html)

cfg83 01-27-2010 04:17 AM

El Mirage Dry Lake Bed (Southern California)
 
Hello -

Looks like Bonneville light :

El Mirage Dry Lake Bed

El Mirage Main Page

El Mirage and Bonneville Land Speed Racing Event Schedule
Quote:

2010
May 15-16
Jun 13
Jul 11
Sep 12
Oct 24
Nov 13-14

This could be a great place to test aero mods in SoCal, but I can't tell how much it costs, or where our "stock" cars would fit in terms of class.

CarloSW2

Bow 01-27-2010 08:25 AM

I want to run out there on the salt SOOOO bad...

I built an engine for doing it, I just need an car to run it in...

aerohead 01-27-2010 07:14 PM

El Mirage
 
I just visited with family in Phoenix/Peoria,AZ.
One of my nephews worked for a sport truck racing team owned by a Mr.Cenni.
They did development work at El Mirage and my nephew claims that the lake bed is "open",not gated like Bonneville.
You might call the Adelanto Sheriff's Dept. and check.
Or you can join the Southern California Timing Association and run at one of their scheduled meets.
Snell approved helmet,5-lb fire extinguisher,metal valve stems,caps,and forward driveshaft sling ( if RWD ) is all that is required for "street class".
They provide fire and rescue,ambulance,and CARE-Flight if necessary.
Tires must be rated for your anticipated speed and you may have to do a 100-mph handling run to make sure your speed-indicating equipment is reasonably calibrated.
Get someone to video your run.The dust rooster-tail will reveal your wake.
Much cheaper than a big wind tunnel.

cfg83 01-27-2010 08:32 PM

aerohead -

Thanks for the info. It's about 70 minutes from home, so I may go up and investigate. Even though faster speeds make aeromods more "visible" in the data (right?!?!?!), I doubt I would go over 70 MPH. I can datalog the OBD-II protocol, so I think I could do "quality" testing with/without aeromods. I think a good aeromod would show a lower engine load (OBD-II parameter LOD) at X RPM * Y MPH.

CarloSW2

Cd 01-27-2010 08:35 PM

Quote:

Originally Posted by Bow (Post 157089)
I want to run out there on the salt SOOOO bad...

I built an engine for doing it, I just need an car to run it in...

I notice you live in Texas.
Are you familiar with the Texas Mile ?
TEXAS MILE // OFFICIAL SITE // 3 DAYS, 1 MILE: NO SPEED LIMIT

Not too far from where you live actually.:thumbup:

Bow 01-27-2010 09:17 PM

Yes Sir, I have read a lot about it, but I have yet to make it to a meet...

and that $200 enter fee to run is a bit discouraging... ;)

aerohead 01-28-2010 08:20 PM

faster
 
Quote:

Originally Posted by cfg83 (Post 157241)
aerohead -

Thanks for the info. It's about 70 minutes from home, so I may go up and investigate. Even though faster speeds make aeromods more "visible" in the data (right?!?!?!), I doubt I would go over 70 MPH. I can datalog the OBD-II protocol, so I think I could do "quality" testing with/without aeromods. I think a good aeromod would show a lower engine load (OBD-II parameter LOD) at X RPM * Y MPH.

CarloSW2

Yes,the square/cube relationship for aero drag/power really shows with speed.That's why top speed remains a telling indicator of efficiency.
The beauty of the OBD-II tech is that you don't have to burn through tankfulls of fuel to learn if a mod is working.It's the way of the future.
In addition to tuft testing,El Mirage could make for "dramatic" video.If you run up there,you might take along a co-pilot which could shoot footage as you drive at normal highway velocity across the lakebed,capturing your car's wake.
I hope to do this one day with the T-100/Viking combo.And with the gap-fillers!

cfg83 01-31-2010 04:01 PM

Hello -

Ok, I visited it with my friend yesterday. It looks like anyone can use the lake bed and there are no racing/safety requirements like the SCTA has.

The visitor center closes at 4:30 PM. We got there around 4 PM and they didn't charge us because we were only on a scouting mission. Besides, the lake bed was closed because it is still wet/muddy from the recent Southern California rains. Here is more info :

El Mirage OHV Recreation Area, Barstow Field Office, Bureau of Land Management California
http://www.blm.gov/pgdata/etc/medial...ge.860.563.gif
Quote:

El Mirage Lakebed

The lakebed is a flat playa formed in an undrained basin. Silt and clay are deposited into this basin during periods of heavy rain. When the "lake" dries, a hard pan dry lakebed is left.

This hard, smooth surface is ideal for the unique activities conducted at El Mirage. These include ultra-light aircraft and gyrocopter flying, model rocketry, remote control airplane flying, landsailing and straight track racing. Many private pilots land on the lakebed to spend the day. The surface character has attracted the interest of many filming companies. Several major movies have scenes filmed here.

There is no speed limit on the open lakebed, but vehicle operators are responsible for their own safety, OHV rules and regulations, and knowing what is going on around them. The maximum speed limit is 15 miles per hour within 50 feet of camps and staging areas.

During permitted events, special speed limits and traffic restrictions are posted. Please watch for these events. To maintain a smooth surface, the lakebed is closed when wet or muddy. The California Highway Patrol, San Bernardino County Sheriff, and BLM Rangers patrol the area to encourage safe use by visitors.

Camping is permitted on the lakebed, but no more than 100 feet from the edge. This keeps the smooth center section of the lakebed clear for night riders.
...
The permits are:

$15 for a one day permit, valid from dawn to dusk
$30 for a weekly permit, valid for 7 days
$90 for an annual permit, valid from October 1, 2009 - September 30, 2010
...

The areas of interests include El Mirage Dry Lakebed, the Shadow Mountains, El Mirage Basin, and the Twin Hills area. This makes up a 24,000 acre of public and private land. Elevations range from about 2,800 feet at the El Mirage Dry Lake to more that 3,800 feet in the Shadow Mountains.

During summer months, temperatures can reach a high of 120 degrees F. Summer thunderstorms can come with spectacular force, although most of the minimal precipitation falls during winter months. Winter lows can fall to 5 degrees F. at night, with highs in the 60 to 70 degree F. range during the day. Spring and Fall temperatures are moderate and fall between these extremes.

Based on what I am seeing this would be perfect for aeromod testing when these conditions are met :

1 - Non windy (consult weather.com for Barstow and cross your fingers it doesn't change)
2 - Not-too-many-other-people day (aka weekday?)
3 - Not-a-special-event-day (mostly weekends)

Driving notes: I haven't driven up a real hill in my car in a long time. I had to downshift from 5th to 4th gear for a few stretches because my 5th gear + hot-air-intake was making me powerless, and my grill block was heating my coolant up more than I like (in still-chilly weather). If/when I go again, I think I will remove the HAI and grill block for the uphill portion of the trip and restore them for the downhill.

CarloSW2

aerohead 02-01-2010 04:09 PM

Mojave Airport
 
Quote:

Originally Posted by cfg83 (Post 158046)
Hello -

Ok, I visited it with my friend yesterday. It looks like anyone can use the lake bed and there are no racing/safety requirements like the SCTA has.

The visitor center closes at 4:30 PM. We got there around 4 PM and they didn't charge us because we were only on a scouting mission. Besides, the lake bed was closed because it is still wet/muddy from the recent Southern California rains. Here is more info :

El Mirage OHV Recreation Area, Barstow Field Office, Bureau of Land Management California
http://www.blm.gov/pgdata/etc/medial...ge.860.563.gif


Based on what I am seeing this would be perfect for aeromod testing when these conditions are met :

1 - Non windy (consult weather.com for Barstow and cross your fingers it doesn't change)
2 - Not-too-many-other-people day (aka weekday?)
3 - Not-a-special-event-day (mostly weekends)

Driving notes: I haven't driven up a real hill in my car in a long time. I had to downshift from 5th to 4th gear for a few stretches because my 5th gear + hot-air-intake was making me powerless, and my grill block was heating my coolant up more than I like (in still-chilly weather). If/when I go again, I think I will remove the HAI and grill block for the uphill portion of the trip and restore them for the downhill.

CarloSW2

Carlo,you'll also kinda be near Mojave,north of Landcaster,Rosamond.
The Rutan Bros. Scaled Composites is their and they use the airport runways or taxiways for aero testing.You might want to drop by and see if they might share info about their setup.I hope to do so when/if I get back that way.

California98Civic 01-28-2012 02:45 AM

This would be a cool SoCal meet up site?
 
Quote:

Originally Posted by cfg83 (Post 158046)
Ok, I visited it with my friend yesterday. It looks like anyone can use the lake bed and there are no racing/safety requirements like the SCTA has.

Eventually, this is a great possible site for SoCal meet-ups and testing?

aerohead 01-28-2012 03:24 PM

testing
 
Quote:

Originally Posted by California98Civic (Post 283002)
Eventually, this is a great possible site for SoCal meet-ups and testing?

If you could do nothing more than record video of the runs you'd have something valuable.The dust vacuumed (or not) up into the cars wake would give a very good indication of aero tuning.

California98Civic 05-13-2012 07:22 PM

A fall 2012 meet-up here for testing and skill shares, before the winter rains? It's about 100 miles from me.

TOOSTUBBORN2FAIL 05-14-2012 01:26 AM

I'd be down for that, depending on the date.

California98Civic 04-16-2013 09:56 AM

2013 schedule
 
El Mirage 2013:
May 18-19
June 9
July 14
Sep 15
Oct 20
No 9-10

I might go for either the May, June, or July dates. Being in Southern California, this is much closer than Bonneville. And I was at Bonneville last year. Anyone on this board ever been to El Mirage? Would be a fun place for a Southern California meet-up, I think.

Looks a lot like Bonneville, if dust were salt and if salt could rise into the wake of the vehicles: http://www.youtube.com/watch?v=6oZu6RYmP04

aerohead 04-20-2013 01:46 PM

El Mirage
 
Quote:

Originally Posted by cfg83 (Post 157077)
Hello -

Looks like Bonneville light :

El Mirage Dry Lake Bed

El Mirage Main Page

El Mirage and Bonneville Land Speed Racing Event Schedule


This could be a great place to test aero mods in SoCal, but I can't tell how much it costs, or where our "stock" cars would fit in terms of class.

CarloSW2

Southern California Timing Association doesn't have anything like USFRA's '130 Club',and the lake
bed is really short in comparison to Bonneville.Any low-power car is going to have a tough time reaching terminal velocity there,even if they let you do it.
If you can't reach top speed you'll learn nothing useful.
Also,we need to know what affect the dirt surface of the lake bed has on rolling resistance.
If your aero AND R-R are BOTH variables it's gonna be tough to sort out your data after it's all over.
PS If you do run there,make sure you get the density-altitude for the hours you're on the track.You can call the Automated Weather Observation System phone number for the Lancaster Municipal Airport and get it on the telephone.From this you can calculate the local air density at 'race time' to help reverse-engineer your new Cd. Or,if Rick Gold (who sells racing fuel) is out there,he'll have the data you'll need.

California98Civic 10-09-2013 12:45 AM

I'm planning to make the 100 mile drive to El Mirage for the SCTA finals event Nov 9/10. Not to run. Just to observe. To spectate. See the aeromods. Hear loud engines.

If anyone else is going and would like to meet up, PM me or just post here.

james


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