|
Tracking / Autocross / HPDE / Drifting What these cars were built for! |
|
Thread Tools | Search this Thread |
08-30-2015, 09:40 PM | #1 |
Member
Join Date: Oct 2012
Drives: White FRS, 2011 Cayman, 1986 944
Location: Damascus, MD
Posts: 67
Thanks: 13
Thanked 15 Times in 11 Posts
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
|
width of a chicago box
I've got my first head designer duties for our local pca autocross this weekend. I'm planning to incorporate a Chicago box. It needs to be fairly slow, as it is the last element before the course goes between some curbs. What's the typical width between the three "slalom" cones in a Chicago box?
The approach will be directly following a turn that will bring cars in at approximately a 45' angle. The exit will have the cars continuing straight in line with the 3 cones. Thanks for your help. |
08-30-2015, 10:19 PM | #2 |
Senior Member
Join Date: May 2014
Drives: 2017 BRZ
Location: Chicago
Posts: 3,285
Thanks: 1,256
Thanked 2,928 Times in 1,714 Posts
Mentioned: 58 Post(s)
Tagged: 0 Thread(s)
|
Not big enough?
I want to say the ones I encountered last weekend were quite similar (equal?) to minimum slalom spacing, but I didn't think to compare it to a slalom because, well.... the approach was, at best, about what you describe and only if you got the line just right. I'm really not the person to ask though, I only stopped having the usual stupid settle over me the 2nd half of the 2nd day (though there was only one on day 2) |
The Following User Says Thank You to cjd For This Useful Post: | strat61caster (08-30-2015) |
08-31-2015, 08:21 AM | #3 |
Senior Member
Join Date: Jun 2012
Drives: 2022 Toyota GR86
Location: Austin, TX
Posts: 191
Thanks: 15
Thanked 48 Times in 36 Posts
Mentioned: 1 Post(s)
Tagged: 1 Thread(s)
|
the minimum distance between the cones in a slalom (Chicago Box) is 45 feet
per SCCA rules. i would keep the distance between 45 & 50'.
__________________
Eric
2022 Toyota GR86 Steel |
08-31-2015, 09:39 AM | #4 |
C-Street AutoX
Join Date: Jul 2013
Drives: 2013 Scion FR-S
Location: Walled Lake, MI
Posts: 373
Thanks: 49
Thanked 160 Times in 109 Posts
Mentioned: 5 Post(s)
Tagged: 1 Thread(s)
|
From one of the best in our local area, this may be useful for you:
http://detroit-scca.org/e107/e107_fi...e_designer.pdf
__________________
-2013 Scion FR-S C-Street
Gearhead Homes - Homes geared towards car enthusiasts: https://www.facebook.com/GearheadHomes.RealEstate |
08-31-2015, 10:43 AM | #5 |
...
Join Date: Mar 2012
Drives: Yes
Location: MD
Posts: 391
Thanks: 34
Thanked 80 Times in 64 Posts
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
|
If you're at the Bowie lot and using the bottom section, I would be most concerned with making sure the cars are going straight through the curbs and preferably less than 15mph on entry. It sucks, but it's the safest bet at that lot in order to avoid paperwork.
|
08-31-2015, 11:42 AM | #6 | |
Member
Join Date: Oct 2012
Drives: White FRS, 2011 Cayman, 1986 944
Location: Damascus, MD
Posts: 67
Thanks: 13
Thanked 15 Times in 11 Posts
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
|
Quote:
Yes, Bowie. The curbs suck, as well as all the bad pavement on the bottom section. I've drawn a Chicago box using the extra room to the left at the bottom of the top section, then through the curbs. Dunno, but 15mph seems a bit extreme. Don't think we've ever slowed cars that much. My theory has always been going through straight is more important than slow. |
|
08-31-2015, 01:38 PM | #7 |
The Stig's German cousin
Join Date: Mar 2013
Drives: 2013 FR-S
Location: Tempe, AZ
Posts: 1,066
Thanks: 140
Thanked 511 Times in 340 Posts
Mentioned: 8 Post(s)
Tagged: 2 Thread(s)
|
The origin of the Chicago box: http://www.team.net/archive/autox/2005-12/msg00047.html
Of course, the rules were amended to treat "features like slaloms" as slaloms and subject them to the minimum slalom distance rule. So if your Chicago box drives like a slalom, 45 feet. If your Chicago box drives like a pivot turn, then gate it wide enough for cars to fit. |
08-31-2015, 02:08 PM | #8 | |
Member
Join Date: Oct 2012
Drives: White FRS, 2011 Cayman, 1986 944
Location: Damascus, MD
Posts: 67
Thanks: 13
Thanked 15 Times in 11 Posts
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
|
Quote:
Fun info. I'll start with 45-50 feet (20 paces) and add as necessary. |
|
|
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Tire Width? | wootwoot | Tracking / Autocross / HPDE / Drifting | 84 | 03-06-2019 07:44 AM |
Chicago Land, is there a 86 club in Chicago? | Cahue | Great Lakes | 8 | 12-26-2013 03:32 PM |
Track width | -max- | Suspension | Chassis | Brakes -- Sponsored by 949 Racing | 16 | 08-21-2012 06:37 PM |
Correct tire width for each wheel width | DarrenDriven | Wheels | Tires | Spacers | Hub -- Sponsored by The Tire Rack | 10 | 08-16-2012 02:03 PM |
Tire Width vs Wheel Width | Synack | Wheels | Tires | Spacers | Hub -- Sponsored by The Tire Rack | 40 | 08-12-2012 11:21 PM |