I am building a new set of landing gear for our Breezy and it is made out of 4130 chromoly tubing with various sizes from 3/4 " to 1 1/8" diameter .065 thickness . I have good selection of tools (die grinders etc.) and a drill press . I am trying to get within 1/64 " of center to install bushings that will be reamed to 5/16 " for landing gear bolts . That is what the plans called for on this experimental airplane . The 5/16" held just fine in a hard landing ( got too slow and pancaked it on landing and bent one gear leg ). I am going to make two new ones and new bungee struts ( called for J-3 shock struts in the plans). But I am building a set from scratch .
I have used a center punch and and a drill press with OK results . I don't have a drill press vise and I think that would be a big help . How can you find dead center on a tube ? I have calipers and micrometers but I am not getting dead center on the tube . There is enough meat on the tube bushing that 1/64" will be close enough and I can fine tune it with heating the tubing . ...........It sounds simple but I want it even closer than 1/64 " if I
can ..........Any comments will be welcomed and that goes for "Love that Bob too ! " ....
I found this :
I have used a center punch and and a drill press with OK results . I don't have a drill press vise and I think that would be a big help . How can you find dead center on a tube ? I have calipers and micrometers but I am not getting dead center on the tube . There is enough meat on the tube bushing that 1/64" will be close enough and I can fine tune it with heating the tubing . ...........It sounds simple but I want it even closer than 1/64 " if I
can ..........Any comments will be welcomed and that goes for "Love that Bob too ! " ....
I found this :
