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Old 08-08-2018, 06:44 AM
markelliott markelliott is offline
 
Join Date: Jun 2018
Location: minneaopolis, mn
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Default EMP page 08-09 Rivet size?

Hello all - First thanks for everyone who posts questions and answers. You have no idea how much this has helped me in my steep learning curve of the project.

Step 2 on page 08-09 calls for rivets specified in figure 1 for the stringer web to the stringers. The only rivets in the plans are specified for the web to the rib and TYP -however both are thinner pieces of material. It seems to me that this should be a 470AD4-5 longer rivet going into the HA-00914 stringers.

Misprint? or am I wrong?

Thanks!!!
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  #2  
Old 08-08-2018, 09:02 AM
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RV-14E RV-14E is offline
 
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Location: Colorado
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You might consider getting a rivet length gauge.



Sometimes the plans call for a shorter rivet when the half size isn't necessarily available. So if a AN470AD4-4.5 isn't available, it might call for a 4-4. Though there are sources available for the 4-x.5 size rivets, if you have a rivet cutter, you can make your own half-size rivets.


This is something I did on the inspar rib-to-cap rivets.

4-5 rivet too short...


4-6 rivet too long...


4-5.5 is a better length...
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  #3  
Old 08-08-2018, 09:05 AM
Aluminum Aluminum is offline
 
Join Date: Jul 2017
Location: San Jose, CA
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Quote:
Originally Posted by markelliott View Post
Step 2 on page 08-09 calls for rivets specified in figure 1 for the stringer web to the stringers. The only rivets in the plans are specified for the web to the rib and TYP -however both are thinner pieces of material. It seems to me that this should be a 470AD4-5 longer rivet going into the HA-00914 stringers.

Misprint? or am I wrong?
It's always a good idea to use a rivet gauge to select proper rivet length. I found the plans call-outs to be almost always correct, but there were a few places where the lengths called out were marginal so I deviated to next longer size. Keep in mind there is some manufacturer variability too, as shown in some photos here on the forums. Also, in my emp kit a few of the bags had stickers mixed up so I ended up without one of the lengths--rivet cutter came in handy more than once.

In this particular location the web is so thin it puckers up after riveting--rivet strength won't be limiting by far. Make sure manufactured head is snug and on the web side.
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