GetChecky › Garage, home & gear
Serial numbers, fault codes, gear ratios and repair-or-replace verdicts. These are the calculators and decoders the forums used to pass around on paper — rebuilt properly, with the data shown and the honest answer first.
This shelf is the math bench: type the serial number, the tire size or the symptom, and get the number or the verdict the forums used to pass around on paper. Every calculator shows its data and its conventions — where a brand's records simply don't survive, the decoder says that instead of guessing.
28 racing calculators — gearing, tire, converter, ET and more — the math pit crews actually run.
RaceCombo is the full pit-wall math bench: gear ratio and tire calculators, converter and ET predictors, engine and chassis numbers — 28 calculators that cross-check each other, with kits for the combinations racers actually build. Free to run, every time.
Calculators that pair tire size with gear ratio and show the RPM and driveability trade before you spend the money.
A regear done on forum folklore costs real money twice. RegearReady computes the ratio your tire size actually needs, what it does to highway RPM and crawl ratio, and where the JL and JT platforms differ — a decision system, not a guess.
Type the serial number — get the year for Ford, Farmall, John Deere and Massey Ferguson, with the dating conventions disclosed, not hidden.
Old tractors carry serial systems that don't agree with each other — Ford alone runs two conventions, and sellers quote the flattering one. TractorYearCheck decodes the serial against the production records and tells you which convention produced the year, so a “rare year” claim can be checked in ten seconds.
Decodes Singer serials from the full register — 9,186 dated blocks — plus Kenmore prefix and Elna charts, with an honest value read.
Singer published its serial register; almost nobody else did. SerialStitch decodes Singer machines block by exact block, covers Kenmore and Elna from their chart systems, and says plainly where a brand's records simply don't survive — then gives the value verdict without the auction-house flattery.
Free ballistics calculators — trajectory, recoil, energy and stability — plus drop charts for factory loads, all on the published G1/G7 drag models.
TruingLog runs the ballistics calculators JBM used to run: trajectory, printable range cards, recoil, chronograph string stats — free, no signup. The $39 Kit is the record nobody gives you on the web: your rifles, your loads and your chronograph strings in one log, with cards trued to your real impacts. The numbers are estimates, never load advice — the site says so itself.
A step-by-step diagnostic — freezer cold? compressor sound? frost pattern? — ending in a verdict and the repair-or-replace math.
FridgeVerdict walks the same branch logic a good technician runs: temperatures, sounds, frost, airflow. Each answer narrows the fault until the verdict is a part, a fix or an honest “replace it” — with the repair-versus-replace math done on your fridge's age, not a rule of thumb.
Symptom-by-symptom verdicts that separate a twenty-dollar fix from a dead machine.
The first of the Verdict family: pick the symptom — not draining, not cleaning, leaking, silent — and the diagnostic walks the causes in the order they actually occur, ending in the fix or the honest replace verdict. No parts cannon, no $150 service call to hear “it's the pump.”
A troubleshooter that walks spa symptoms to the failed part before you pay for the visit.
Hot tub service calls start around $150 just to show up. TubVerdict's troubleshooter works the symptom tree — no heat, no jets, tripping breaker, error codes — and names the failed component, so the call you make is for a part, not a mystery.
Symptom verdicts for no-heat, noise and no-spin — what's fixable at home this weekend and what isn't.
Most dryer failures are one of a handful of parts, and most of them are cheap. DryVerdict separates the venting and fuse problems you can fix today from the board and motor failures you shouldn't touch — with the safety lines stated plainly where electricity and gas are involved.
Decodes standby-generator fault codes into what actually failed — and the safe next step.
A home standby generator that faults during an outage gives you a code and silence. GenVerdict decodes the code by brand into the failed system and the checks that are safe to run yourself — and says clearly which ones wait for a technician.
A short diagnostic — brand, symptom, connection, system — that returns the likely cause, the first fix, and a dead-or-alive verdict.
Printers fail in a small set of ways that look identical from the outside. Unjammed asks five questions and returns the probable cause and the fix order that resolves most of them — and it tells you plainly when the printer is done, so you stop buying ink for a corpse.
Design-checked project math — span, load and sag — before you cut the wood.
Shelves fail by sag long before they fail by breaking, and the sag math depends on span, depth, material and load in ways eyeballing gets wrong. ShelfVerdict runs the numbers on your design and returns the verdict: holds, sags, or redesign — before the lumber is cut.
Decodes your QR code's vendor and expiry risk — the permanence check nobody else runs.
A QR code printed on a sign, a menu or a product can silently be a “dynamic” code rented from a vendor who can switch it off. PrintLasts decodes where your code actually points and whether it can expire — the check to run before anything goes to print.
The free Battery Deal Checker reads a used EV's battery health against the deal in front of you — the battery is 30–40% of the car's value.
Hundreds of thousands of off-lease EVs are hitting the used market, and the battery decides what the car is really worth — but sellers rarely show a battery-health number a buyer can trust. BatteryWise checks the deal before you pay; the Toolkit carries the per-model packs and the questions to ask the seller.
Guides written for this hub that sequence the checkers on this shelf:
