RC Data Vault
RC Setup Tools
Free calculators for gearing, speed estimation, and setup comparisons. Built for hobbyists who want real numbers, not guesswork.
Deal Value Calculator
See if a listing price is a deal, fair, or overpriced — based on real sold data
Model Comparison
Compare up to 3 models by price, market activity, and value
Setup Calculators
Gear Ratio Calculator
Calculate your final drive ratio from spur, pinion, and internal drive ratio. Understand acceleration vs. top speed tradeoffs.
Speed Estimator
Quick estimate using basic inputs. Estimate theoretical top speed from motor KV, battery voltage, gearing, and tire diameter. Includes wheel RPM and FDR output.
Gear Change Comparator
Compare your current gearing setup to a proposed change. See the FDR delta and whether you're going taller or shorter.
Battery Runtime Calculator
Estimate how long your battery will last based on capacity (mAh) and current draw. Useful for planning run sessions.
ESC Selector
Find the right ESC amp rating for your battery and use case. See matching ESCs from our catalog with direct buy links.
Advanced Brushless Speed Calculator
Full gearing, differential, and tire-based speed calculation. Estimate theoretical top speed from motor KV, LiPo cells, gearing, and tire diameter.
Brushed Speed Calculator
Estimate speed from motor turns, voltage, gearing, and tire size. Directional estimate.
Nitro & Gas Speed Calculator
RPM-based speed estimation for nitro and gas engines. Estimate top speed for nitro and gas-powered RC vehicles from engine RPM and gearing.
Gas Mix Ratio Calculator
Calculate how much 2-stroke oil to add to your fuel at any mix ratio.
Vehicle Evaluator
Estimate what your RC is worth based on its condition and upgrades installed.
Identify by Photo
Upload a photo of an RC vehicle and we'll identify the model using image matching against our catalog.
All calculations are theoretical estimates. Real-world results vary with sag voltage, temperature, terrain, and mechanical losses.