Àwọn Ìṣàmúlò-ètò

Gear ratio, output speed and torque — single or compound, with road speed.

Ìjádé àwọn àgbègbè

Àwọn ìsàlẹ̀-ilà àwọn ìjánu-ìjánú

Ìjánú ìṣàmúlò-ètò

rpm

Àwọn Ìjánu-ìṣàmúlò-ètò

N·m

2nd driving teeth ?

Ààyè kejì tí a fẹ́ fún ààyè àwọn ìjádà àwọn ìjádà.

2nd driven teeth

Ìjánu-ìṣàmúlò-ètò ?

Àwọn ìkúndùn: nípa ìjánu-ìjánú iparí, fi ìráwọ̀n ààyè-iṣẹ́ pamọ́.

Àwọn ìṣàmúlò-ètò ìtàn

Àwọn ìṣàmúlò-ètò —

Ìjánu-ìṣàmúlò-ètò —

Àwọn ìṣàmúlò-ètò —

Ìjánú ìsàlẹ̀-ilà —

Àwọn Àtòjọ-ẹ̀yàn àwọn ìṣàmúlò-ètò

Ńlà àwọn àwọn ààtò àtòjọ-ẹ̀yàn yìí?

Àkóónú ìṣàmúlò-ètò yìí

A gear ratio compares the teeth on the driven (output) gear to the driving (input) gear: ratio = driven / driving. It is the fundamental trade-off of gearing — a ratio above 1 is a reduction that turns the output slower but multiplies torque, while a ratio below 1 is an overdrive that spins faster but with less torque. Concretely, output RPM = input RPM ÷ ratio and output torque = input torque × ratio, so speed and torque always move in opposite directions (ignoring friction losses), keeping the power roughly constant.

As a worked example, a 10-tooth driving gear meshing with a 35-tooth driven gear gives a ratio of 35 / 10 = 3.5:1. Feed it 1,000 rpm and 20 N·m and the output turns at 1,000 / 3.5 ≈ 286 rpm but delivers 20 × 3.5 = 70 N·m. For a compound gear train, add a second pair under advanced options and the overall ratio is the product of the two stages — a 3:1 stage feeding a 2:1 stage gives 6:1 total. Enter a tyre diameter and final drive ratio and the tool also works out road speed from the wheel rpm.

Gear ratios are how machines match a power source to a load: low gears give a car or bicycle the torque to climb and accelerate, high gears give efficient cruising, and reduction gearboxes let small fast motors drive heavy slow loads. The same principle sizes winches, conveyors, clock mechanisms and drill speeds.

Àwọn Àtòjọ-ẹ̀yàn

Bawo ní a ṣe lè ṣé ìṣàmúlò-ètò ìṣàmúlò-ètò?

Divide the number of teeth on the driven gear by the number on the driving gear. A 35-tooth driven gear on a 10-tooth driver is 35 / 10 = 3.5:1.

Bawo ni àwọn ìṣàmúlò-ètò ìṣàmúlò-ètò ṣe lè fá ìráwọ̀n àti ìṣàmúlò-ètò?

A ti pọju ratio ti 3.5:1 yio mu ki output 3.5 igba ti o dara ju ti input ṣugbọn o ti pọju torque nipasẹ 3.5, ko si rii daju awọn ibajẹ friction.

Kini àwọn ìṣàmúlò-ètò ìṣàmúlò-ètò?

When two gear pairs are in series, the overall ratio is the product of the two: a 3:1 stage feeding a 2:1 stage gives 6:1 total reduction.

Kini ìfaràǹwọ́ laarin ìbàlẹ̀ náà àti àwọn ìṣàfarawé àwọn ìṣàmúlò-ètò?

Àwọn ìṣàmúlò-ètò ìṣàmúlò-ètò ní ìdájú jú 1 lọ: o mú ìjádè kù náà kù jú àwọn ààtòjú àwọn ààtòjú, tí o dara fún ìjádé àti ìṣàmúlò-ètò. Àwọn ìjádè tí a fi pamọ́ jú 1 lọ: o mú ìjádè kù jú àwọn ààtòjú àwọn ààtòjú, tí o dara fún ìjádé àwọn ààtòjú.

Ńwò nínú àwọn ààyè-iṣẹ́ àwọn ààyè-iṣẹ́?

No. Gears trade speed for torque, not the other way around — the output power can never exceed the input, and real gears lose a few percent to friction. If torque goes up by 3.5×, speed drops by the same factor so power stays about the same.

Bawo ní a tí kọ́lùmúlẹ̀ náà ṣe n ṣe iṣẹ́ láti mú ìrànwọ́ ààyè-iṣẹ́ náà?

From the wheel rpm (input rpm ÷ total ratio ÷ final drive) and the tyre circumference (π × diameter). Enter a tyre diameter in inches and a final drive ratio and it returns the speed in both mph and km/h.

Ìjánu-ìsẹ̀ wo ní "ìjánu-ìsẹ̀"?

Àwọn ààyè ìṣàmúlò-ètò (tabí àgbéwọlé) ní àwọn tí a bá kọ̀ǹpútà sí ààyè agbara - ojú motó tàbí ojú àpá. Àwọn ààyè ìṣàmúlò-ètò (àtòjọ-ẹ̀yàn) ní ààyè àwọn ààtò. Àwọn ìṣàfarawé tí a bá fi àwọn ààyè yìí pàtó nípa ìṣàmúlò-ètò, tí a bá yí ìgbàlú padà sí ààyè àwọn.

API — ló àwọn ìṣàmúlò-ètò yìí láti inú ìṣàmúlò-ètò

Fi àwọn ìṣàmúlò-ètò yìí kọ̀ǹpútà yìí láti jẹ́ ààyè-iṣẹ́ JSON tí a tí fi pamọ́ - kò ní bọ́tìnì kan tí a fẹ́. Fi àwọn fálù ààyè-iṣẹ́ sílẹ̀ sí bí àwọn àwọn ìṣàmúlò-ètò àti JSON. Anything you omit uses the same default this page is pre-filled with; an unknown parameter is a 400, never a silent zero. Ka àwọn àkọlé API kíkún →

Àwọn Ààyè Ìjánu-ìṣàmúlò-ètò

GET https://calculator.free/api/v1/gear-ratio/

curl

curl "https://calculator.free/api/v1/gear-ratio/?driving=10&driven=35&rpm=1000"

JavaScript `fetch()`

const r = await fetch(
  "https://calculator.free/api/v1/gear-ratio/?" + new URLSearchParams({
    "driving": "10",
    "driven": "35",
    "rpm": "1000"
  }));
const data = await r.json();
console.log(data.results);

Results are estimates for general guidance only, not financial, medical or tax advice.

Àkóónú ìṣàmúlò-ètò yìí

Àwọn Àtòjọ-ẹ̀yàn