I read with interest the experience John Powell has had
with his serviced Winged Wheel cylinder barrel.
It may be of interest that two types of barrel exist for these
"whizzers":
The early type had a cast iron cylinder head and relied on a ground
or lapped seal with the barrel.
The later type had an aluminium cylinder head and relied on a cast
iron ring inserted in a machined groove in head as a seal.
The first and second types of barrel/heads cannot be
interchanged. The early cast iron head/barrel is in my opinion
the best as it eliminated the head distortion of later type.
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