PIT BOARD

TRACK SCIENCE - USDA SSURGO

16%CLAY

42%SAND

42%SILT

Ustolls - Well drained - Farnum loam, 1-3% slopes

Sandy loam -- drains fast, rubber builds slowly. Expect a longer heavy phase than a high-clay track. Surface tends to stay tacky deeper into the night when watered well. Groove runs wide early, narrows as the top comes in. Semi-banked profile means the cushion builds predictably in the corners.

Open dirt-tracks dataset - Garage setup tools

81 Speedway

Park City, KS -- 3/8 mile semi-banked - Elev. 1,373 ft

DIRT OVAL - EST. 1952

3/8 mile semi-banked clay. Gear set 10-12 on a Winters 4.11 (FDR 7.4-7.7) for heavy conditions. Sandy loam holds moisture better than high-silt tracks -- plan for a longer tacky window before it slicks. URSS, ASCS Sooner, Gunsmoke, and ASCS National all run here. Elevation 1,373 ft -- moderate DA effect. Watch humidity on race night.

3/8 mile

SIZE

clay

SURFACE

SEMI-BANKED

BANKING

1,373 ft

ELEVATION

42%

SAND PCT

4,000

CAPACITY

TIMEGRAM - 81 SPEEDWAY FRAMEinkwell.wiki/81-speedway-ks SETUP TOOLSSTAGGER - SCALE - GEAR - HUNTER FAN ZONELIVE AUDIO - NEARBY TRACKS

7700 N Broadway, Park City KS. North of Wichita on I-135, Exit 16 west. 3/8 mile semi-banked clay oval operating since 1952. One of the premier 305 sprint car venues in Kansas -- home to URSS United Rebel Sprint Series, ASCS Sooner Region, ASCS Gunsmoke Region, and ASCS National Tour stops. Weekly USRA program: Modifieds, B-Mods, Super Stocks, MiniStocks. Lil 81 kart oval in the infield. Seating 4,000. Season March-October.

81 Speedway

Design 81 Speedway merch