Author: Mark Lancaster <mlancast2004@...> Time: Sat Feb 21, 2004 11:03 pm PST Link
Question,
After match drilling the HS-601 (skin) to the horizonal stabilizer skeleton, it appears that the edge distance on the forward most hole on the HS-405 flange (where it slips into the flange of the HS-702) does not meet the edge distance requirement (from the forward edge of the flange; not the inboard edge); I may have 1 rivet diameter at this time. I cannot see given the pre-punched configuration how I can obtain the distance required. Is there any advice on how to get the 405 to slip far enough into the 702 to minimize this? Im hoping this is a common issue. I have not drilled through the union of these parts yet. Looking for tips to get more margin.
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Author: "Phil" <pjanderton@...> Time: Mon Feb 23, 2004 3:28 am PST Link
Mark,
I voiced similar concerns to Vans about the four rivets which hold
the centre section of the skeleton together on each side. Vans
pointed out that the edge clearance is critical where there are shear
loads applied to the riveted components. Obviously a thin edge would
potentially fail under shear where a thicker edge would not.
My impression is that these holes and rivets are not normally
subject to shear loads, and the normal structural loads are
distributed anyway. So the marginal edge clearance is not an issue
here. This is not the case with the the few critical rivets fastening
the control surface hinge plates. They bear significant loads in
normal operation - I would concentrate on getting these right.
Phil Anderton.
--- In RV7and7A@yahoogroups.com, Mark Lancaster <mlancast2004@y...>
wrote:
> Question,
>
> After match drilling the HS-601 (skin) to the horizonal stabilizer
skeleton, it appears that the edge distance on the forward most hole
on the HS-405 flange (where it slips into the flange of the HS-702)
does not meet the edge distance requirement (from the forward edge of
the flange; not the inboard edge); I may have 1 rivet diameter at
this time. I cannot see given the pre-punched configuration how I
can obtain the distance required. Is there any advice on how to get
the 405 to slip far enough into the 702 to minimize this? Im hoping
this is a common issue. I have not drilled through the union of
these parts yet. Looking for tips to get more margin.
Author: "Mark Freeman" <mark.freeman@...> Time: Mon Feb 23, 2004 3:28 am PST Link
Mark,
I have recently gone through this. I emailed Vans and they said it
wasn't a problem.
cheers,
Mark.
Author: "sebs164e" <sebastian.trost@...> Time: Mon Feb 23, 2004 3:29 am PST Link
--- In RV7and7A@yahoogroups.com, Mark Lancaster <mlancast2004@y...>
wrote:
> Question,
>
> After match drilling the HS-601 (skin) to the horizonal stabilizer skeleton, it
appears that the edge distance on the forward most hole on the HS-405
flange (where it slips into the flange of the HS-702) does not meet the edge
distance requirement (from the forward edge of the flange; not the inboard
edge); I may have 1 rivet diameter at this time. I cannot see given the pre-
punched configuration how I can obtain the distance required. Is there any
advice on how to get the 405 to slip far enough into the 702 to minimize this?
Im hoping this is a common issue. I have not drilled through the union of
these parts yet. Looking for tips to get more margin.
I had the same situation and called Van's. they said it was only one rivet and
was a common situation. They said to go with it as is, so I did.
Sebastian Trost
RV-7A QB working on wings