RVG8tor
Well Known Member
I need some advice. I am about to start to rivet the HS, everything is ready, but as I reviewing the DWG 3 for any gotchas and I found one. In the exploded view it says to "trim the lower flange of the rear spar" (shaded area), it does not say how much but referes you to DWG 78. In that DGW it just says you may have to trim the flange to allow the elevator the full design travel, but no dimensions are given.
I called Van's to find an answer, and I was told to wait until fitting the HS to fuselage and in the same conversation I was told I could trim it back to the start of the radius to see how that works when fitted to the fuselage.![Roll eyes :rolleyes: :rolleyes:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Given that the flange would be easier to trim now vice after it is riveted together, I would like to cut now if required. However, if there is typically no trimming required or very little then I would wait. I do not want to trim away any more than required, and trimming back to the radius seems excessive. The note cautions not to remove any of the 609 reinforcing angle. Now when you think of how deep the spar flange is there is a large margin there, how can a matched hole design have this much of a possibility unknown? Maybe it is due to the tail working for several models. Any RV-8 (A) builder out there who can tell me how much they needed to trim, and is this no big deal to leave until the fitting to the fuselage. Or is there a way to check now if any will need to be trimmed back. Thanks I know this forum will not let me down.
Cheers
I called Van's to find an answer, and I was told to wait until fitting the HS to fuselage and in the same conversation I was told I could trim it back to the start of the radius to see how that works when fitted to the fuselage.
Given that the flange would be easier to trim now vice after it is riveted together, I would like to cut now if required. However, if there is typically no trimming required or very little then I would wait. I do not want to trim away any more than required, and trimming back to the radius seems excessive. The note cautions not to remove any of the 609 reinforcing angle. Now when you think of how deep the spar flange is there is a large margin there, how can a matched hole design have this much of a possibility unknown? Maybe it is due to the tail working for several models. Any RV-8 (A) builder out there who can tell me how much they needed to trim, and is this no big deal to leave until the fitting to the fuselage. Or is there a way to check now if any will need to be trimmed back. Thanks I know this forum will not let me down.
Cheers