A chopper with electric drive

User “blowme” presents his chopper made of “trash” which had the influence on its frame.

Assumptions:
- maximum safety;
- materials used should be solid;
- electric drive with a motor with low revolutions;
- branches are supposed to be chopped into 5-10 cm long pieces.

Results:
- it works;
- length of the branches chopped does not exceed 10 cm;
- efficiency has not been assessed yet.

Pluses:
- weight of the machine contributed to its stability and made it not vibrate;
- possibility to chop a little thicker branches was not assumed;
- easiness in maintaining the bearings through the access greasing points.


Minuses:
- due to its weight, it must be towed by a tractor;
- blades sharpened at the wrong angle, which influences lower efficiency and increased noise;
- electric motor with tractor transport.

Materials
- steel frame;
- protection guards made of 2mm metal sheets;
- flywheel adapted most probably from a Kamaz;
- blades made of a coil spring from a Kamaz;
- brand new bearings;
- drive of the roller forwarding branches made of a camshaft chain adapted from a Fiat 126p;
- electric motor 7.5kW 900 revolutions;
- switching with the buttons "switch on", "switch off" is preformed by a contractor with support contacts;
- right/left revolution switch;
- two safety switches were assembled but they cannot be seen in the pictures.




Link to original thread - Rębak do gałęzi z napędem elektrycznym