Description
Pulley Doppler Open moped
The Doppler pulley from the Open series is made entirely of high quality aluminum. The anodized silver surface provides high resistance against oxidation.
The sprocket, made of corrosion-resistant steel, centers the chainring and is set so that it virtually cannot jump out. 5 screws ensure that no shear forces occur. The milled heads are designed so automatic loosening is virtually impossible.
Scope of delivery:
- 1 aluminum pulley d.213mm, for oversize V-belt
- 1 pinion 10 teeth steel
- 2 needle cage bearings closed HK1616-2RS
- 5 screws FHC M5 x 15
Tip:
Tighten the countersunk screws crosswise with a torque of 4.5 Nm.
Grease the needle roller bearings before assembly, then every 4500km or yearly if needed.
CVT Pulleys
Pulleys are an integral part of the CVT system on scooters and mopeds with automatic CVT transmission.
The continuously variable transmission consists of fixed and moving pulleys, the V-belt rises and falls between them depending on the engine speed, changing the speed of the vehicle.
When should you change a pulley?
There are two reasons for replacing pulleys:
- Wear and tear. Although pulleys are relatively durable, the constant sliding of the V-belt can deform the surface.
- Tuning. Different pulley angles and diameters can improve the handling of scooters or mopeds.
Note: A CVT variator can only do a good job when CVT pulleys as well as torque drive pulleys are compatible with each other. Pitches and diameters of the individual elements must be matched so that the V-belt can glide evenly.
