How does a Schlumpf drive work?

A Schlumpf Drive is a two-speed planetary gear assembly for use on bicycles. It is distinct from other bicycle planetary gear assemblies in that it is located behind the chainring rather than in the rear hub. A push-button on each side of the axle allows the rider to switch between high and low ratios.

What is Schlumpf Mountain drive?

With the schlumpf mountain drive you gain additional very low gears which enable you go climb the most extreme inclines easily. The extremely flat planetary gearbox shrinks every gear by factor 2.5, that way doubling the expansion extent of your bike.

What is a high speed drive?

The Schlumpf high speed drive has a large gear transmission ratio and is suited to riding in very high gears. A small sprocket (e.g. 27 teeth) shows great impact in a big gear with 67 teeth. High speed drive is ideal for many applications; especially folding bikes (Brompton, Birdy, etc.)

Which are two types of variable speed motors?

There are three general types of variable speed drives- DC Motor drives, Eddy Current Drives, and AC Motor drives. Each type of variable speed drive can be divided into different variations.

What are the types of drives?

Types of Drives, Features and Principles (Motors And Drives)

• Mechanical. Mechanical variable-speed drives were probably the first type of drive to make their way into the industrial environment.
• Hydraulic Drives.
• Eddy-Current Drives.
• Rotating DC Drives.
• Electronic Drives (DC)
• Electronic Drives (AC)

Why VFD is used in pumps?

Variable frequency drives are used for adjusting flow or pressure to the actual demand. They control the frequency of the electrical power supplied to pumps or fans. Significant power savings can be achieved when using a VFD pump. It controls the frequency of the electrical power supplied to the motor.

What are the 3 types of drives?

There are three different kinds of hard drives: SATA, SSD and NVMe. In this article, you’ll learn about each type and what their strengths and weaknesses are.

What are the four types of drive?

Even if you don’t recognize the term “drivetrain,” chances are, you know what kind of drivetrain your vehicle has. There are four different types of drivetrains: all-wheel drive, four-wheel drive, front-wheel drive, and rear-wheel drive.

What is VSD pump?

Variable speed drive (VSD) is a general term that refers to a pump driver that has a range of speeds—for example, from 2000RPM to 4000RPM.

What is VFD valve?

VFD Valves / Variable Frequency Drive Valves VFD motors (Variable Frequency Drive Pumps) are used in many applications from household appliances to VFD pool pumps to a VFD well pump and large drives and compressors.

What are the disadvantages of VFD?

Drawback or disadvantages of variable frequency drive:

• Some harmonics distortion.
• Electromagnetic interference.
• Inrush current.
• Limited motor lead length.
• Cable failures.
• Motor bearing failures.
• High voltage spikes.
• Corona discharge.

Why choose a Schlumpf Drive?

The Schlumpf drive in combination with the advanced belt drive provide effective travel with fewer gears. Longer service life: Schlumpf gears are designed for practically maintenance-free operation for ten thousands of kilometres. The result is utmost customer satisfaction.

How do you shift gears on a Schlumpf Drive?

Cable-free: The Schlumpf drive is shifted by simple foot action. An easy button push with the heel, while stopped or in full travel, and the gear switches reliably. Maintenance-prone cables and pulls are also a thing of the past. E-Bike-capable gear ratio: The motto is ride, don’t shift.

What is the best belt drive system for Strida folding bike?

Schlumpf Advanced Belt Drive System ABDS D.2.8. speed-drive for Strida folding bike (with eccentric bottom bracket and belt drive) -> see also E.2.5.3. D.2.9. speed-drive for excentric bottom bracket D.2.10. central speed-drive D.3. high-speed-drive