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Need to start a discussion about engine mounts

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fixnflyr

Well-Known Member
Joined
Mar 7, 2009
Messages
61
Location
Springfield, Ga. USA (2ga2) Swaids Field
I used that article to analyze the engine mount for "HEATSTROKE" when I built a new longer mount of 22", the old mount was 7.5" long. I needed to move the CG a lot. We have to do a 6G pull to qualify at Reno. It's raced 2 years after that. I designed it for 8G load/ 12G ultimate.
I bought a copy of Brune to check buckling allowances.
I had good success with no problemsHeatstroke 2018 #2.jpg
 

karmarepair

Well-Known Member
HBA Supporter
Joined
Jan 13, 2011
Messages
320
Location
United States
The Briggs engines flying in Europe (Sd-1 and Luciole) use firewall mount, not base mount.
The vertical V-twins have numerous threaded holes for firewall attach on the engine PTO end. Sort of like the VW firewall mount on a Volkplane.
True, but for a variety of reasons, I'm driving the prop from the PTO end.
Did you post any pictures of your engine on your test stand?
 
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