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Jacobs radial - 275 hp.

John Brennan

New Member
Oct 24, 2008
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Hi I am new to the group and just starting a Skybolt. I've built most of a Jungmann and Jungmeister before and i am now back in the game. My quesion - I would like to hang a Jacobs 275 hp. on this a/c - I plan to build the "D" model or do I have to go to the "R" model? Thanks - great forum and great knowledge.

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