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Engine Mount

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Gary

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Dec 15, 2006
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I am in the process of building a Steen Skybolt and will use a 4 cylinder Superior AEIO360 (185BHP) with an MT Constant Speed Propeller. I am in the process of laying out my engine mount but am confused on a couple of the dimensions. On sheet 12 it states that the front face of the prop flange should be 42” from the firewall. I have set up a dummy crankcase and crankshaft to that dimension, but when I check the distance from the firewall to the front of the dynafocal ring cup it comes out at 21”, whereas the plans state that distance should be 18”. I’ve also read in the Skybolt News (S1V2P13) where it states the front face of the prop should be 40” from the firewall.<?:namespace prefix = o ns = "urn:schemas-microsoft-com:eek:ffice:eek:ffice" />

Has anyone come across this in the past and if so, which was the critical dimension? I would be interested to know the engine mount dimensions that others have used with a 4 cyl engine and constant speed prop.

Many thanks, <?:namespace prefix = st1 ns = "urn:schemas-microsoft-com:eek:ffice:smarttags" /><st1:City><st1:place>Gary</st1:place></st1:City>
 

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