Are these parts from one set, lots of related sets or just a big messy jumble? I bought a job lot of approx 2kg of Lego at a (UK) car boot sale and I'm struggling to identify the set/s that the pieces relate to. The owner said that it belonged to her late husband and that she thought that they were...


  "...all from the same set".


There are four separated bags, all of which contain fairly similar parts, mostly yellow flat plates and small black pieces with lots of large tracks and propellers. I've snapped the most obviously unusual pieces in each bag.

Bag 1:




Bag 2:




Bag 3:




Bag 4:




Any ideas?
They are definitely not from a single set, as the 16x16 yellow plate was only ever sold in Friends sets, that do not contain any Technic track pieces.

Another telltale sign is the transparent orange Brick with Shaft 1x8x1, whose only occurrence is in a few Star Wars podracer and Alpha Team sets from 1999-2001, none of which has any propeller pieces.

The first picture contains a black turbine insert with many blades, this was sold in many unrelated sets across the years.