Home  RV-8 RV-8 Blog Empennage HS-404 Nose Rib, Final Drill Skin (1.0)
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HS-404 Nose Rib, Final Drill Skin (1.0) |
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Written by Adam Oke
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Thursday, 24 December 2009 |
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I drilled through HS-405 rib through HS-702 spar and through HS-404 nose rib. CRAP! I blew the minimum edge distance requirement for the HS-404 Nose rib flange.
I went straight to the forums to see if this was ok, just like the HS-405 top and bottom flange edge distance closes to the front spar. Some said replace it, some said make a scab flange, some said build on! To Van's I went. Here was the response. Adam,
Yep, the edge distance is a bit close on the HS-404, but I would still fly with it. The important spec here is on the HS-814-1 which looks great. That is where he major portion of the load path is being transmitted.
The 2 rivets attaching the HS-404 are not really carrying all that much load, but more just holding that part in position. I would continue building and use the assembly as completed so far.
Thanks
Joe Blank Builder Support Vans Aircraft Inc. 503-678-6545 I'm still up in the air if I will replace it and forget about it. But either way, if I build on, it is fine!  
Upon further inspection as to why this occured, I found that my centre line crept in close to the flange side which allowed it to be offset more to the outboard of the horizontal stab. So...... TIP: Ensure that your flange centre lines are perfect or it will create stress down the road!
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