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Old 04-13-2019, 09:27 AM
Neil Guildford
Join Date: Jan 2003
Location: Guildford, UNITED KINGDOM
Posts: 508
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I can only think that Biela has changed the size that they manufacture to.
This engine isnít new to me and was in my Hangar 9 Corsair for three years previously, first with a 22 x 10 3b semi scale Biela, then 22 x 12 3b and lastly the 24 x 10 2b.
The 2 blade is the thickest at 34mm.
22 x 12 3b is 28mm
22 x 10 3b is 27.2mm.