PIT BOARD

Shelby County Speedway

Harlan, IA — 3/8

DIRT OVAL

TRACK SCIENCE · USDA SSURGO

36%CLAY

3%SAND

61%SILT

Aquolls · Poorly drained

Zook silty clay loam, 0 to 2 percent slopes, occasionally flooded

High-clay substrate — holds moisture; watch for sealed/slick transitions as the night progresses.

Open dirt-tracks dataset · Garage setup tools

Pick your class in Black Book Garage — stagger matrix adjusts for track size and banking.

3/8

SIZE

clay

SURFACE

UNKNOWN

BANKING

TIMEGRAM · SHELBY COUNTY SPEEDWAY FRAMEinkwell.wiki/shelby-county-speedway-ia SETUP TOOLSSTAGGER · SCALE · GEAR · HUNTER FAN ZONELIVE AUDIO · NEARBY TRACKS

MERCH STUDIO · PRINTFUL

Design Shelby County Speedway merch

Custom race shirts, pit crew hoodies, and all-over print jerseys for Shelby County Speedway fans and drivers. Search 725 dirt tracks for logo art, add your number, live mockup — no MyRacePass $72/yr or design fees.

Open Merch Studio →