All Replaced all h36 cables at weekend but discovered both cables to steer tail wheel had cut through their white nylon outer guide which really could be missed unless you remove both cable and outer. This happened at front end about 30cm back from front crimp and spring as it goes over a rib. It really should be lowered less than 10mm so is a straight pull as to stop shimmy this has a lot of load on it. The elevator push rod goes thru this rib nearby (really big hole) and I see no problem with lowering tube outer a little into rib so it will be a straight pull It would not cause a cable failure I guess. Anyhow we replaced both cable and outer to real + all front cables and job done 2 days later!!!!
This may be a prob with hk36 tailwheel version also and you do not really pick it up until you remove the outer white hard nylon "beer line". As I mentioned earlier the inner tubes in the "S" of rudder adj moved back and exposed the metal at front end of S which cut into the rudder cable and that is with both h36 here but the one with only 400hrs only has one rudder cable cut .AND no inner liner I am certain I checked ZDD two form 2s ago (3 years ago) and all was perfect. I am open to suggestions from all but so tubes never move back again I added 2 cable ties to nylon tube (just in front of S rudder adj) then added contact adhesive and then plan a blob of glass flock mix over 2 cable ties so no way it will ever slide back. By the way what H36 use in S tube is crap and is too thin. I think I mentioned earlier when at Jindabyne 30 years ago the inner tube in a ASK21 S of rudder worked its way back so the Rudder jammed - ie could not get full right rudder. needless to say ever since I always check S tubes in rudder adj I hope Diamond have got lots of these probs fixed in their later versions. Perhaps that is why h36 must have 3000hly but the hk36 first major inspection is 6000hrs. I think 3000hlys are a good idea. I must admit a 8000hr Falke having its first 20 yearly had a lot less problems. Old Scheibe sure knew how to design gliders and still to this day (over 50 years after falke was first built) there are less than 5 ADs- I know no other glider with such a record. Tailplane fin deflection testing with 58Kg on a bar out one meter next. Ian McPhee
