Why aren't sheets pre-dimpled?

[David-aviator]

Originally Posted by Steve

the RV-12 comes with its holes prepunched to the final size. Maybe because its a slow(er) airplane so will put less stress on the airframe and the fasteners, etc, etc.
Steve

And perhaps because pulled rivets are usually not set in dimpled holes.

Compared to the beginning of this series of airplanes, building today is almost as easy as falling out of bed. You-all calling for pre dimpled holes are a bunch of wimps.

[1:1 Scale]

Flat sheets of aluminum will package neater and be less likely to damage adjacent sheets that pre dimpled sheets.

[G Swartley]

I love building!!

If I wanted to not build I would buy a plane built by somebody else.

The kits are way easy to build almost an assembly instead of a build. All I'm really saying is everybody should take a weekend class and find out if this building thing is for you. I did and loved the whold weekend. There are parts of the process that are less enjoyable than others, but then I just crank the music and work on. Another idea is to take frequent brakes. Or possibly your meathod of dimpling is the problem, i use a DRDT-2 and the skin dimpling is easy, quiet, and quick.

Just some random thoughts

[Deems Davis]

[quote=G Swartley;156161]I love building!!

If I wanted to not build I would buy a plane built by somebody else.


Some like to fly more than build and visa versa, I heard this from another builder who enjoyed the building-

"buying a quickbuild is like paying someone to go to the movies for you"

[kentb]

[quote=Deems Davis;156184]

Originally Posted by G Swartley

I love building!!

If I wanted to not build I would buy a plane built by somebody else.


Some like to fly more than build and visa versa, I heard this from another builder who enjoyed the building-

"buying a quickbuild is like paying someone to go to the movies for you"

Going to the movies while it is still in the theater.

Kent

[N941WR]

Originally Posted by teookie

Anyone know why they don't punch the holes out to final diameter?

Match drilling the holes also relieves the stress and helps eliminate pillowing between the rivets.

I suspect, but don't know, that with pulled rivets, such as those used on the RV-12, there is less stress put on the sheets so Van's can get away with punching them to final size.

Also, if they punch the holes and don't deburr them and they are dimpled, there might be a serious cracking problem starting in the dimples. (It almost makes me feel sorry for those guys who elect to skip the match drilling/deburring and go right to dimpling.)