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Top Hobby Chess - Darts - Karts - Boats 

High Performance Bass Boat Speed Calculator
High Performance Bass Boat Speed Calculator

Enter your engine RPM, Prop Pitch in inches, and Gear Ratio and find out how fast your bass boat really goes!

You can use these calculators to calculate chess rating, darts score, kart ratio, and bass boat speed.

Darts Calculator | Harrows Darts Technology
Keep darts score.

FIDE Chess Rating calculators. Initial Rating calculator
Calculator for chess players who has not got FIDE rating. Players can check their initial rating.

FIDE Chess Rating calculators: Chess Rating change calculator
Calculator for FIDE rated players who want to check rating change after the game with FIDE rated opponent.

go-kart racing Gear Ratio Calculator
Kart Ratio Analysis Calculator

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