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<< Lancair Builders' Mail List >>
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The firewall itself does not carry the thrust forces. The triangular chocks
at the engine mount attach locations transfer those forces into the
fuselage.<<
...Always wondered what those triangular chocks with the bitty holes on the firewall were.
Was wondering if a firewall reinforcement (engine mount attach points in the firewall) is practical considering my hypothetical notion regarding a 200HP on the 320. I 'm also a little curious to know if anyone has placed a 200HP on a 320. I think, via Internet a while ago, a fellow had built several 320's with a 200HP and has/had them for sale or sold. If it is totally discouraged than that would be nice to know also. In addition, forward thrust forces between a 180 and 200HP was not my major concern (or should it be my major one?) Torque, asymmetrical thrusts, hard landing forces with added weight of the varr.pitch prop, and CG did come to mind. A 58 lb. vari pitch prop more firewall forward with the ext. mount seems fwd heavy. And yes I do recall V2=3DV1 x cube root (hp2/hp1)...Twice the speed wanted eight times the HP needed - cool perspective! BTW, is the LML archive accessible to it's members? thanks!
vic
[The LML archive is available to everyone... just go to the LML website
and select the "Archives" menu option. It's available as a searchable
archive on the web or as textfiles that you can download and install on your own system. Complete directions are included for both.
<Marv> ]
LML website: http://www.olsusa.com/Users/Mkaye/maillist.html
LML Builders' Bookstore: http://www.buildersbooks.com/lancair
Please send your photos and drawings to marvkaye@olsusa.com.
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