Here is the DOPPLER ER3 variator, it is the best and most racing variator from the DOPPLER house, it is directly drawn from all of DOPPLER's experience in competition. This model is with or without clutch, so you will not be in direct drive if you do not have a clutch pulley with the version without clutch, if your MBK 51 has a starter kick, you can take the version with clutch, no more expensive and which allows you not to stall at each stop.
This drive just like the BIDALOT or MALOSSI VARIOTOP has a weight adjustment system. Adjustment level, it remains the simplest and most precise. It offers a good gain in top speed and especially in acceleration, recovery. With its blue anodized / solid-machined flange like the ER2, it really offers a racing and circuit look. It is delivered to you with an assembly / disassembly key and a set of adjustment weights.
It is all the same less solid than variotop it must be admitted. But it is also much cheaper and yet very efficient. It is also really very light! His cheeks have a very good waist angle. To be accompanied by a good belt and if possible a DOPPLER clutch pulley if you take the model without a clutch!
Model with clutch : Only for MBK 51 with kick start !!!! A small bearing is located on the barrel, which allows the machine not to stall at fire, at stops ... This system does not, however, allow you to start with the stroller, it is obviously much less efficient than a clutch pulley but that works well.
Clutchless model : Direct drive, unless you use a DOPPLER clutch pulley for example!
Summary :
-Range: 100mm
- Barrel diameter: 28mm
-Weight: NC
-Homologated: yes delivered with a flange
