Re: [ULF-1] Reconcile Rear Fin Spar Widths with Loft Diagram

From: Member 50
Date: 2012-06-06 19:15 UTC+01:00
Message: #0374

Member 67, Have you taken into account the doubler built into the fin rear
spar where it is attached to the fuselage. This is through the position of
rib one (base rib) and effectively takes up the space of the rear of the
largest fin rib, it means the rib is shorter than it would be if the doubler
was not present.

Andy Member 50





-----Original Message-----
From: [email] [mailto:[redacted]
On Behalf Of [email]
Sent: 06 June 2012 03:26
To: [email]
Cc: [email]
Subject: [ULF-1] Reconcile Rear Fin Spar Widths with Loft Diagram

Folks,

Our rudder and elevator spars are built.  We are starting on the fin spars
and have planed the spar caps to their double taper as per plan. 

We are having difficulty reconciling the width of the rear spar plan drawing
with the rib widths on the loft diagram.  The widths of ribs #1,2,4,6, and 8
on the rear fin part of the loft diagram do not match up at all with the
width of the rear spar drawing at the respective rib stations.  In fact,
they are way off. The front spar drawing seems to be OK.

Has anyone noticed any discrepancies in the rear fin spar drawing??  My
build team and I are quite perplexed by this.  Should we just modify the
rear spar plan to match up with the rib widths shown on the loft diagram??

Many thanks for your help,
Member 72


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