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Matt Dralle
Site Admin
Joined: 08 Nov 2005
Posts: 26320
Location: Livermore CA USA
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 Posted: Fri Oct 02, 2009 5:54 pm Post subject: Side Cowl Pin Size... |
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Dear Listers,
I'm happy to report that the cowling on the 'ol RV-8 is complete and came out very nice. I was able to get the seams all around very nice and tight.
Here's my question. On the bottom cowl firewall pins and the top cowl firewall pins, the plans call out undersized pins. These go in nicely and I've got no complaints.
However, on the side pins that join the top and bottom cowling pieces, the plans call out an AN257-P3 hinge and don't mention using an undersized pin. I am able to get the side pins in and out with a drill but its a lot of work, especially going in, and it just seems like this is going to wear out the hinges after a while.
In the kit, I noticed that Van's shipped two different types of hinges in the three-foot lengths required for the cowling sides. There are two, 3' long AN257-P3 pieces and two, 3' long <other kind of hinge> that seems to be steel instead of aluminium like the AN257-P3. The pin inside of these steel hinges is about 2/3 the size of the pin in the AN257-P3 hinges. So, my logical thinking lead me to think that you're suppose just use the pins from the steel hinges on the sides for easier pin insertion/extraction. Am I reading this right? Or is it just a coincidence that they sent the steel hinges? I don't know what else to do with them.
Thanks!
Matt Dralle
RV-8 #82880 N998RV
http://www.mattsrv8.com - Matt's All New RV-8 Construction Blog
Snorkel Intake Installation & Governor Recabling (1700 hours and counting)...
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Matt Dralle
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yenduc(at)me.com
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| Posted: Fri Oct 02, 2009 10:12 pm Post subject: Side Cowl Pin Size... |
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Matt:
I used the regular hinge pins (not undersized). If you taper them on
the tips and dampen a rag slightly with ps 2 oil and then wipe the
hinge pin, it will be easier to push into place. It gets easier after
a few hours of flight. The first few times it works better with two
people -- one pushing and the other tapping along the path of the pin
with the heal of his hand as the pin passes through.
Good luck
dave(at)RAL 125 hrs 7A
On Oct 2, 2009, at 6:54 PM, Matt Dralle wrote:
| Quote: |
Dear Listers,
I'm happy to report that the cowling on the 'ol RV-8 is complete and
came out very nice. I was able to get the seams all around very
nice and tight.
Here's my question. On the bottom cowl firewall pins and the top
cowl firewall pins, the plans call out undersized pins. These go in
nicely and I've got no complaints.
However, on the side pins that join the top and bottom cowling
pieces, the plans call out an AN257-P3 hinge and don't mention using
an undersized pin. I am able to get the side pins in and out with a
drill but its a lot of work, especially going in, and it just seems
like this is going to wear out the hinges after a while.
In the kit, I noticed that Van's shipped two different types of
hinges in the three-foot lengths required for the cowling sides.
There are two, 3' long AN257-P3 pieces and two, 3' long <other kind
of hinge> that seems to be steel instead of aluminium like the AN257-
P3. The pin inside of these steel hinges is about 2/3 the size of
the pin in the AN257-P3 hinges. So, my logical thinking lead me to
think that you're suppose just use the pins from the steel hinges on
the sides for easier pin insertion/extraction. Am I reading this
right? Or is it just a coincidence that they sent the steel
hinges? I don't know what else to do with them.
Thanks!
Matt Dralle
RV-8 #82880 N998RV
http://www.mattsrv8.com - Matt's All New RV-8 Construction Blog
Snorkel Intake Installation & Governor Recabling (1700 hours and
counting)...
<2009.09.15 - RV-8 - Cowling Fitting And Installation Complete
( .jpg><2009.09.15 - RV-8 - Cowling Fitting And Installation
Complete (9).jpg><2009.09.15 - RV-8 - Cowling Fitting And
Installation Complete (11).jpg><2009.09.15 - RV-8 - Cowling Fitting
And Installation Complete (1).jpg><2009.09.15 - RV-8 - Cowling
Fitting And Installation Complete (2).jpg>
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