The Murphy Builders Site

Hi Geoff
I'm doing an Elite so my wing design is probably different...but.... what
you say seems correct and I'd expect there to be no gap. Is the outside rib
the same size as all the other ribs ? In mine it is so there is no gap
problem. If this is your first wing can you compare the outside rib to one
of the ribs for the other wing (in the Elite the ribs are all the same apart
from the solid fuel tank ones)
It could be you have a deformed rib supplied ?!
Hope this helps a bit
Nigel
745E
G-ONIG

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com]On Behalf Of
Geoff van Asch
Sent: 02 October 2007 03:07
To: rebel-builders-d@dcsol.com
Subject: [rebel-builders] Wing rib / rear spar


Hi all

Hopefully someone out there can help.
I have asked Murphy Tech, but at this stage no reply.

I'm in the process of attaching the rear spar of the right wing to the
outside wing rib.
I need a little clarification and direction please.

I have prepared the aileron hinge doubler on the outside of the rear
spar.
Now to the point of drilling through the doubler, the rear spar an into
the tail of outside rib.

I find that the tail of the outside rib is narrower than the rear spar
(see the attached photos for clarification)
You can see I have a metal ruler on top of the rib down over the spar
where the top skin would be.
If I leave it like this then the bottom of the rib is 1/4" high (note I
have put the aileron hinge on the table so you can see the gap at the
bottom).

I couldn't get the email posted to the builders log with the attachment,
if anyone wants I will separately post the photo. (if Mike will allow!!)

I don't believe it should be this way, (if you look at fig 10.5.1 of the
instructions the rib is on the table so the bottom skin flows onto the
back spar, like wise the top skin would flow down the rib and onto the
back spar, both are flush.

What am I missing?
Can I do anything about it?
If I even the spar top and bottom both will be out by 1/8", that doesn't
seem right.

Can you please point me in the right direction.

Regards

Geoff van Asch Rebel 798






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Geof,
Can you post a link to the photo? This email list won't allow attachments, I don't think anyway. Or send it to me personally. I may me able to help. I didn't have any problems of this type on my wings. Curious to see what you are dealing with.
Jesse

From: admin@airnig.co.uk
To: rebel-builders@dcsol.com
Subject: RE: [rebel-builders] Wing rib / rear spar
Date: Tue, 2 Oct 2007 17:30:50 +0100

Hi Geoff
I'm doing an Elite so my wing design is probably different...but.... what
you say seems correct and I'd expect there to be no gap. Is the outside rib
the same size as all the other ribs ? In mine it is so there is no gap
problem. If this is your first wing can you compare the outside rib to one
of the ribs for the other wing (in the Elite the ribs are all the same apart
from the solid fuel tank ones)
It could be you have a deformed rib supplied ?!
Hope this helps a bit
Nigel
745E
G-ONIG

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com]On Behalf Of
Geoff van Asch
Sent: 02 October 2007 03:07
To: rebel-builders-d@dcsol.com
Subject: [rebel-builders] Wing rib / rear spar


Hi all

Hopefully someone out there can help.
I have asked Murphy Tech, but at this stage no reply.

I'm in the process of attaching the rear spar of the right wing to the
outside wing rib.
I need a little clarification and direction please.

I have prepared the aileron hinge doubler on the outside of the rear
spar.
Now to the point of drilling through the doubler, the rear spar an into
the tail of outside rib.

I find that the tail of the outside rib is narrower than the rear spar
(see the attached photos for clarification)
You can see I have a metal ruler on top of the rib down over the spar
where the top skin would be.
If I leave it like this then the bottom of the rib is 1/4" high (note I
have put the aileron hinge on the table so you can see the gap at the
bottom).

I couldn't get the email posted to the builders log with the attachment,
if anyone wants I will separately post the photo. (if Mike will allow!!)

I don't believe it should be this way, (if you look at fig 10.5.1 of the
instructions the rib is on the table so the bottom skin flows onto the
back spar, like wise the top skin would flow down the rib and onto the
back spar, both are flush.

What am I missing?
Can I do anything about it?
If I even the spar top and bottom both will be out by 1/8", that doesn't
seem right.

Can you please point me in the right direction.

Regards

Geoff van Asch Rebel 798






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_________________________________________________________________
Boo!

Geoff
How did this work out for you?
My memory is that the bottom wing skin should flow smoothly onto the
spar but it is OK for the top skin to bump up a little if the top of the
spar is a bit high. Suspect I adjusted the top rib flanges a bit to
smooth the transition a bit. Note that you may well have to "adjust"
the top spar flange up a bit anyway to provide clearance to the top of
the flaperon when it is deflected full up.
Ken

Geoff van Asch wrote:

Hi all

Hopefully someone out there can help.
I have asked Murphy Tech, but at this stage no reply.

I'm in the process of attaching the rear spar of the right wing to the
outside wing rib.
I need a little clarification and direction please.

I have prepared the aileron hinge doubler on the outside of the rear
spar.
Now to the point of drilling through the doubler, the rear spar an into
the tail of outside rib.

I find that the tail of the outside rib is narrower than the rear spar
(see the attached photos for clarification)
You can see I have a metal ruler on top of the rib down over the spar
where the top skin would be.
If I leave it like this then the bottom of the rib is 1/4" high (note I
have put the aileron hinge on the table so you can see the gap at the
bottom).

I couldn't get the email posted to the builders log with the attachment,
if anyone wants I will separately post the photo. (if Mike will allow!!)

I don't believe it should be this way, (if you look at fig 10.5.1 of the
instructions the rib is on the table so the bottom skin flows onto the
back spar, like wise the top skin would flow down the rib and onto the
back spar, both are flush.

What am I missing?
Can I do anything about it?
If I even the spar top and bottom both will be out by 1/8", that doesn't
seem right.

Can you please point me in the right direction.

Regards

Geoff van Asch Rebel 798






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Ken

Sorry it has taken a while to get back to you
If you look under Files/Rebel/Wing you will find a picture narrated - Geoff's
rear spar to rib mismatch, they were out by plus 1/4".
Long story - short, Murphy agreed the rear spars were sub standard and
have replaced
Thank you to Darryl and the Murphy team on that.
Back to the delight of building the right wing.

Thanks to the others out there for their input, Much appreciated.

Geoff van Asch
Rebel 798



On 10/20/2007 3:44 AM, klehman@albedo.net wrote to rebel-builders:

-> Geoff
-> How did this work out for you?
-> My memory is that the bottom wing skin should flow smoothly onto the
-> spar but it is OK for the top skin to bump up a little if the top of the
-> spar is a bit high. Suspect I adjusted the top rib flanges a bit to
-> smooth the transition a bit. Note that you may well have to "adjust"
-> the top spar flange up a bit anyway to provide clearance to the top of
-> the flaperon when it is deflected full up.
-> Ken
->
-> Geoff van Asch wrote:
->
-> >Hi all
-> >
-> >Hopefully someone out there can help.
-> >I have asked Murphy Tech, but at this stage no reply.
-> >
-> >I'm in the process of attaching the rear spar of the right wing to the
-> >outside wing rib.
-> >I need a little clarification and direction please.
-> >
-> >I have prepared the aileron hinge doubler on the outside of the rear
-> >spar.
-> >Now to the point of drilling through the doubler, the rear spar an into
-> >the tail of outside rib.
-> >
-> >I find that the tail of the outside rib is narrower than the rear spar
-> >(see the attached photos for clarification)
-> >You can see I have a metal ruler on top of the rib down over the spar
-> >where the top skin would be.
-> >If I leave it like this then the bottom of the rib is 1/4" high (note I
-> >have put the aileron hinge on the table so you can see the gap at the
-> >bottom).
-> >
-> >I couldn't get the email posted to the builders log with the attachment,
-> >if anyone wants I will separately post the photo. (if Mike will allow!!)
-> >
-> >I don't believe it should be this way, (if you look at fig 10.5.1 of the
-> >instructions the rib is on the table so the bottom skin flows onto the
-> >back spar, like wise the top skin would flow down the rib and onto the
-> >back spar, both are flush.
-> >
-> >What am I missing?
-> >Can I do anything about it?
-> >If I even the spar top and bottom both will be out by 1/8", that doesn't
-> >seem right.
-> >
-> >Can you please point me in the right direction.
-> >
-> >Regards
-> >
-> >Geoff van Asch Rebel 798
-> >
-> >
-> >
-> >
-> >
-> >
-> >-----------------------------------------------------------------
-> > List archives located at: https://mail.dcsol.com/login
-> > username "rebel" password "builder"
-> > Unsubscribe: rebel-builders-unsubscribe@dcsol.com
-> > List administrator: mike.davis@dcsol.com
-> >-----------------------------------------------------------------
-> >
-> >
-> >
-> >
-> >
->
->




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That's good to hear Geoff.
MAM always came through for me as well when there was an issue with parts.
Ken.

geoff.van.asch@dcsol.com wrote:

Ken

Sorry it has taken a while to get back to you
If you look under Files/Rebel/Wing you will find a picture narrated - Geoff's
rear spar to rib mismatch, they were out by plus 1/4".
Long story - short, Murphy agreed the rear spars were sub standard and
have replaced
Thank you to Darryl and the Murphy team on that.
Back to the delight of building the right wing.

Thanks to the others out there for their input, Much appreciated.

Geoff van Asch
Rebel 798

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