(From: Thomas Prufer (Prufer@compuserve.com).)
|NotTaR of small Gasoline Engines and Rotary Lawn Mowers : Crankshaft-friendly blade sighted
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I recently came across a description of a blade assembly similar to the one
suggested by you to make bending the crankshaft difficult. This is in the
Royal Horticultural Societies' "Encyclopedia of Gardening". In the tools
and accessories section, under the "lawn mowers" subsection, a caption says:
"Plastic disk. This cheap replacement part cuts the grass by rotating
horizontally". The inset shows rotary, cylinder, and "Flymo" mowers. A
picture of the part shows a disc almost the diameter of a regular blade,
with one blade joined to the circumference by a pin so that centrifugal
force keeps it radial. This blade is short and narrow compared to the
plastic disc; no telling if it is plastic or metal. There is no further
reference to this part in the text. In my translation, it is on page 465.
If only they had included a name or supplier!