In a message dated 6/10/2004 9:59:54 AM Eastern Standard Time, ask...@microlink.zm writes: What size bolt holes are required for mounting the Diehl type u/c? (I have old KR plans with retracts).
I presume that the Grove rendition has bolts all the way through the spar from the bottom up? Steve, The bolts supplied for the attachment on the diehl gear are 1/4", I did replace mine with 5/16 due to the gross weight I am anticipating. I also floxed the attachment to the spar and the legs to the bracket. You need to do some planning as to where to drill these to place the holes as close to the centerline of the spar caps as you can. The spar will have an upward dihedral angle and the brackets need to be level to maintain the correct geometry. On my bird this also caused the bracket to protrude from the bottom of the wing on the front corner of the bracket. (new airfoil) no problem as the fairings will cover it I think the grove gear mounts on a 90* angle bracket that would be mounted to the spar in a manner similar to the diehl. I don't know if any of the KR plans show anything other than retracts (about 1/3 of book) I bought my plans in '96 or '97 Hope this helps Riley Collins Rutledge, Tn
