MR + PZ - connection of worm gear and pre-stage helical gear

Connection of the MR worm gear with PZ pre-stage helical unit

The use of the first toothed stage (PZ rack) has many positive aspects:

- enables to obtain high efficiency of the set;
- allows you to create large gear ratios, even up to 300
- prevents heating of the worm gear;
- allows the use of a smaller mechanical size of the engine, which reduces the weight of the set.