Ratio Calc! vs RC Maker Hub

Ratio Calc is a quick and easy tool for radio control car racers to use trackside. Knowing your final drive ratio (FDR) is very useful for comparison with other racers to determine if your car is geared correctly. It lets you quickly select your car by filtering on manufacturer and model. Select your pinion and spur size and the FDR is displayed. Tyre diameter can also be entered to calculate your rollout. Ratio and roll out charts are also available which plot pinion and spur gear combinations to create very handy reference tables. - Save your favourite cars for quick access - Select measurement units (imperial/metric) - Select your preferred gear pitch, alternative ratios in other pitches will be shown - Over 2000 cars/variants in the database which is updated regularly

RC Maker Hub is the digital paddock for the RC Maker SP2 1/10 EP touring car. Build the kit, learn the adjustments, keep your setup sheets, and open the official manual — all in one place, on your iPhone. BUILD — BAGS A TO J Follow an interactive step-by-step guide through twelve chapters. Tick each action, resume where you left off, and filter steps for carbon, aluminium or steel chassis. Parts lists, notes, tips and exploded views sit next to every step. Watch the official build with Chris Mitchell, bag by bag. ADJUSTMENT Ride height, droop, camber, up-stop and more: the kit baselines explained one setting at a time, with the “which way” notes from the SP2 manual. Flex, rockers, ARB, steering lock, springs and FDR charts are included as in-app guides. SETUP SHEETS Create or import an SP2 sheet, save your race and practice setups, export PDF, and browse community sheets by surface, indoor/outdoor, grip and weather. An account is only required to save and publish — you can still fill a sheet and download the PDF as a guest. MANUAL Open the official SP2 PDF in the app and jump to the page you need. LANGUAGES English, French and German. RC Maker Hub is the companion app for the RC Maker SP2. The physical kit and printed documentation remain the reference for assembly.