Lego Technic tractor with butterfly mower
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Building level: 9397 and 8053 Technic sets
Price range: 50€~70€
Development time: 2 months
I have always loved building tractors so now I decided to build one for Lego Cuusoo. Not because Lego doesn't build tractors but because they build tractors with only a few functions.
The equipment is this time a 3-mower system with rotating blades. Farmers uses these tools to cut the grass for forage harvesting. The grass will be stored and in the winter be used for the cattle.
The tractor has all functions that a tractor must have: front and rear 3-point hitch, front and rear PTO and a 4-inline piston engine. The PTO is the power take off for the tractor: it gives energy to the tractors equipments. In this case I added one mower on the front and 2 on the rear. This configuration is called the 'butterfly' mower due to the characteristic shape. The PTO can be turned on and off and has 2 possible speeds. Therefore this model has a driving ring system in it and it was quite hard to create a simple solution there.
I estimate it to have the same difficulty level as the 9397 Technic set. I think the price is about €50~€70 because it does not contain any Power Functions elements.