Quick Answer: How much torque can a bike chain handle?

A strong rider can put about 1,500 Newton propulsive force on a pedal which, depending on the gearing, can translate into a propulsive torque of 1,000 Newton-meter. That’s a huge number, even compared to a lot of cars.

How much torque can a human produce on a bicycle?

How much maximum pedal force would the leg of an average person generate while cycling? – Quora. The torque generated is which would be 65 * 9.8 * 3.1416 * 0.15 * 2 which is about 600 Newton-meters at the exact 90 degree angle of the pedal when the person is standing on the pedal.

How much strength does it take to break chains?

As it turns out, the European ISO standard of 8,000 Newtons of minimum breaking force for a chain offers a good margin of security.

How much force can a chain withstand?

Chains have a working load limit- or WLL- of approximately one third of their break strengths (the amount of force the chains can withstand before they break).

How much torque is needed to ride a bike?

If you want to connect a motorized drive wheel, you will need to be able to generate that much force on the edge of the drive wheel. If you have a 5 cm radius wheel you would have a torque of 10 Nm (0.05 x 200), with a speed of 400 rpm (5 times greater than the speed of the pedals).

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How do I increase torque on my bike?

One way to increase your 2-stroke motorized bike’s torque is to gear down, as doing so changes your gear ratio and decreases speed at your rear wheel. You can do this by using a smaller front sprocket or a large rear sprocket like a 54 Tooth Sprocket.

How much force can a cyclist produce?

An elite cyclist can produce about 5 watts (5W) of power for every kilogram of bodyweight for a 1-hour event. For example, a 70 kg cyclist who is able to maintain a power output of 350W for 1 hour would be considered to be in the elite category.

What is breaking load of chain?

Chain Properties

Work Load Limit (WLL) is the maximum load which the chains are designed to sustain in lifting use. … Minimum Breaking Load (MBL) is the minimum force of which the chain must withstand before failure. The mean stress at this load is 800n/mm2 (MPA). The minimum elongation before failure is 20%.

How much weight can a chain hold?

ALLOY STEEL CHAIN (GRADE 80)

Trade Size In Inches Working* Load Limit Lbs. Weight per 100 Feet Lbs.
1/4 3,500 71
5/16 5,100 106
3/8 7,100 144
1/2 12,000 236

How strong is a chain?

The tensile strength of the chain products have a wide range of variation depending on the alloy and size. In general, we may consider the value of 7 – 8 lb (3.2 – 3.6 kg) as a borderline between “strong” and “weak” chains.

How much force can a bike chain take?

A strong rider can put about 1,500 Newton propulsive force on a pedal which, depending on the gearing, can translate into a propulsive torque of 1,000 Newton-meter. That’s a huge number, even compared to a lot of cars.

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Why do bicycle chains break?

Chains, like anything else on your bike, can be damaged if it gets hit hard enough. While not as common, chains can break if they are involved in a rock strike or other impact. … The reason being, wear will typically only break one chain link, while impact can damage many.

How strong is steel chain?

It is made of an alloy steel mixture which makes it extremely strong, durable, and rugged. Many Grade 80 industrial chains are available in a black lacquer finish for further protection from wear and scratching. Grade 80 chain has a maximum working load limit range of 3,500 to 47,700 lbs.

How much torque is needed to move a load?

To calculate load torque, multiply the force (F) by the distance away from the rotational axis, which is the radius of the pulley (r). If the mass of the load (blue box) is 20 Newtons, and the radius of the pulley is 5 cm away, then the required torque for the application is 20 N x 0.05 m = 1 Nm.