*Stefan Balatchev wrote:> I am considering using Oilite bushings for my tail movable surfaces. Press fit seems out of the reach for me, so I would try the following method, please let me know if somebody else tried that and if yes, what was the *outcome
Having spent a number of years in a landing gear overhaul shop, I have learned a thing or two about bushing replacement- No need to heat the part prior to any drilling operation. Heating is used to open up the bore to ease installation of the bushing. Additionally, bushings are usually cooled (submersed in liquid nitrogen) to "shrink" the OD. The combination of heating the receiving bore and cooling the bushing opens up dimensions which allows for ease of installation. When the temps normalize, the interference fit will have been achieved. I have seen bushings simply "drop" into place and then become very secure when normalized. As far as boring, the best method to hold .001" tolerances would be to drill undersize and finish with an appropriately sized reamer. On Fri, Aug 19, 2016 at 9:26 AM, Mark Langford via KRnet < krnet at list.krnet.org> wrote: > Stefan Balatchev wrote: > > > I am considering using Oilite bushings for my tail movable surfaces. > Press fit seems out of the reach for me, so I would try the following > method, please let me know if somebody else tried that and if yes, what was > the outcome...< > > I just drilled a hole, maybe reamed it to size (I forget) and used > Loctite 620 between bushing and aluminum. If it was a press fit, I > probably just tapped it in place. With 1130 hours on the plane, there > is no noticeable play in the rudder hinges. If you want to do as you > plan, you can drill the hole in advance. The hole will grow with the > rest of the part. > > Mark Langford, Harvest, AL > ML "at" N56ML.com > www.N56ML.com > > > _______________________________________________ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org > please see other KRnet info at http://www.krnet.org/info.html > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options >
