Looking for Napier Sabre series supercharger impellers

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ThomasP

Senior Master Sergeant
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4,886
Apr 17, 2017
midwest USA
Hey everyone,

Does anyone have any authoritative information on the supercharger impellers used on the Sabre series?

I think that there were only 2 different impellers used - the two-sided double-entry type type on the Sabre I-IV and the single-sided(?) single-entry type used on the Sabre V-VII. Any info would be appreciated but I am particularly looking for the impeller diameters.

I have had no luck either on the internet or in the books I have access to and any info would be appreciated.
 

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