Thanks for the words of support!
Bike weight 39 kg. Geometry issues are very complex. It is necessary to go fast as a DH, but on a horizontal surface, and sometimes up, in contrast to DH. Current trends are 29 "wheels and a long bike.
My height is 186cm, and now I am comfortable. The bike is very stable at speed, and helps out when tired and make mistakes. Perhaps plays the role of a low center of gravity and low unsprung weight rear wheel. Turning is also not bad. Low top tube does not interfere in turns. On braking is not blocked. The rear suspension works well. Distresses the fork. Need something better. Perhaps 27.5 ".
Chainstay frame 440 mm, can be increased to 470. To pull out the front wheel, you need a smaller one, but if you go up, you want more. While experimenting.
An important point, it is convenient for me to pedal when I lift the saddle up. Of course there is a buildup suspension, and the total weight of the bike. To go without a motor, it's like working on a stationary bike. But I can keep the speed of 15-20 km / h for a long time. Now I am working on a torque sensor. If you help with the trigger gas, you always want to add more, and there are no right emotions from riding on the pedals.
In general, I like everything, the prototype does not break from the loads, the transmission and suspension work. I have enough power and battery capacity. But there are many minor amendments, as well as the resource and reliability of lightweight bicycle components should be considered. Maybe soon I will make a new frame, try to reduce weight.