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rowlandcarson(at)gmail.co
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 Posted: Fri Aug 01, 2014 6:14 am Post subject: trimming fuselage upper moulding firewall flange |
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I've had the pre-bond inspections all signed off and am hoping to organise a Redux posse soon to glue the fuselage top on.
I note that the forward end flange which fits against the firewall is quite generous compared to the flanges elsewhere, which are between 35mm & 50mm wide. I'm intending to trim the flange for the firewall joint back to about 40mm, but thought I'd check to see if anyone thought that is a bad idea. There doesn't seem to be any explicit advice about trimming that area in the manual, but fig 8 on page 23M-5 seems to suggest that a 25mm flange is OK, since the BID tapes it illustrates going across the joint are only 50mm wide.
Any thoughts welcome.
in friendship
Rowland
| Rowland Carson ... that's Rowland with a 'w' ...
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Fred Klein
Joined: 26 Mar 2012
Posts: 503
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| Posted: Sat Aug 02, 2014 6:33 am Post subject: trimming fuselage upper moulding firewall flange |
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On Aug 1, 2014, at 7:14 AM, Rowland Carson <rowlandcarson(at)gmail.com (rowlandcarson(at)gmail.com)> wrote:
| Quote: | | There doesn't seem to be any explicit advice about trimming that area in the manual, but fig 8 on page 23M-5 seems to suggest that a 25mm flange is OK, since the BID tapes it illustrates going across the joint are only 50mm wide. |
Rowland…IMHO, it is a real stretch to interpret fig. 8 as "a suggestion that a 25 mm flange is OK”…personally, I would not consider trimming the top fuselage flange at the firewall for even a nanosecond, given its obvious contribution to the rigidity to the airframe…I read fig. 8 as an un-dimensioned illustration of the relationships of the various components at this critical intersection…nothing more...Fred
[quote][b]
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tonyrenshaw268(at)gmail.c
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| Posted: Sat Aug 02, 2014 7:50 am Post subject: trimming fuselage upper moulding firewall flange |
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Hi Rowland,
Will you have another can of Redux at the redy, borrowed or bought, just in case you need a little more?not a good time to find out you need more, and have to scrape a whole can off, and throw it in the bin for the sake of 5-10% more. Something to ponder.
Regards
Tony Renshaw
Sent from my iPad
| Quote: | On 2 Aug 2014, at 12:14 am, Rowland Carson <rowlandcarson(at)gmail.com> wrote:
I've had the pre-bond inspections all signed off and am hoping to organise a Redux posse soon to glue the fuselage top on.
I note that the forward end flange which fits against the firewall is quite generous compared to the flanges elsewhere, which are between 35mm & 50mm wide. I'm intending to trim the flange for the firewall joint back to about 40mm, but thought I'd check to see if anyone thought that is a bad idea. There doesn't seem to be any explicit advice about trimming that area in the manual, but fig 8 on page 23M-5 seems to suggest that a 25mm flange is OK, since the BID tapes it illustrates going across the joint are only 50mm wide.
Any thoughts welcome.
in friendship
Rowland
| Rowland Carson ... that's Rowland with a 'w' ...
| <rowlandcarson(at)gmail.com> http://www.rowlandcarson.org.uk
| Skype, Twitter: rowland_carson Facebook: Rowland Carson
| pictures: http://picasaweb.google.com/rowlandcarson
|
| | - The Matronics Europa-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Europa-List |
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