Sunday, January 3, 2010

RV-3 gear in Straight!


I had to make a new assembly, the first one was too wide due to using the wrong blueprint..
the first one I had drilled the tubes and the gearlegs at the same time and then welded ...When I had finished the assembly I had gotten too much heat into it and messed up the alignment of the gear legs.That created a impossible to get straight situation with the gear/fuselage alignment..
The new assy. I welded a little at a time to keep from warping the assy. Then I drilled one hole in the top assy, installed the legs and jigged them straight and centered.I filed the hole to match the gearleg holes...Then chucked up the assy. in the drill press and used the gear legs to line up the back hole...Everything turned out straight this time..
This time I clamped the assy. into place and measured off of the tail post...less than a 1/16th in. difference !!the assembly also sits perfectly in the middle of the fuse centerline! I'll go with it! I tacked it into place and have to tack the remaining 4 support tubes in place, then remove the engine mount and finish weld a little at a time to keep from heat warping/moving anything around.

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