- The Andair FS16 fuel shutoff valve (andair.co.uk/) is approved In Australia. I guess (but don't know) that the approval trickled down from EASA or FAA. These valves require a 1/8" NPT male to 14mm male adaptor. The only adaptor I could get needed drilling out to ensure adequate flow. - The undercarriage rod-ends are Hirschmann standard design - UC straps - Diamond Aircraft would have a monopoly on these.
No videos that I know of. regards Rob Rob Thompson 0429 493 828 On Sat, Nov 4, 2023 at 7:46 AM Kurt Redinbaugh <redinbau...@gmail.com> wrote: > Hi Rob > Thanks for your prompt responses and support! > Have you a source for the time limited parts for the H-36, specifically > the rod end bearings, fuel shut off valve and the landing gear bow brackets? > A search for these part numbers on the net does not get any results for > me. (Please excuse the poor sentence structure but you get the idea,,,) > Has anyone done a YouTube of the 3000 hour inspection? > Thanks again > Kurt > > > On Wed, Nov 1, 2023 at 5:32 PM Rob Thompson <amessageto...@gmail.com> > wrote: > >> Attached is the 3000hour inspection schedule. Check that everything is >> still current. >> >> In Australia our Gliding Federation (GFA) manages registrations so to do >> a 3000 hourly you need to be a GFA authorised maintainer with a Survey >> Rating from them. A GA maintainer can only do the inspection if the >> aircraft is registered as a GA aircraft....which very few are. >> regards >> Rob >> >> Rob Thompson >> 0429 493 828 >> >> >> >> On Thu, Nov 2, 2023 at 9:55 AM Kurt Redinbaugh <redinbau...@gmail.com> >> wrote: >> >>> I fly #3660 in Nevada and am coming up on the 3000 hour inspection. I >>> have not noticed the aileron issues noted but am concerned because this >>> ship is tied down on the ramp with full covers during the summer months >>> when we get temperatures over 100 degrees f. Your pictures of the bearing >>> issues would be very helpful in determining the condition of the bearings >>> in #3660. >>> Who can I find that is qualified to perform the 3000 hour inspection? My >>> A& P with IA is an instructor at Abaris Training here in Reno and consults >>> with all the leading airframe manufacturers worldwide so I am comfortable >>> that he understands composites. >>> The nearest Limbach service center is in the UK. Who can I use to tear >>> down and inspect my engine stateside? >>> I did send the prop to Hoffmann for IRAN with satisfaction (expensive!) >>> Thank you for your posts-they are always informative. >>> Kurt >>> >>> On Mon, Oct 30, 2023 at 9:49 PM Ian WIlliams <i...@agcon.co.nz> wrote: >>> >>>> Hi All, >>>> >>>> I thought you all may be interested in the following >>>> >>>> >>>> >>>> 1. We have finally got our replacement prop from Hoffmann (10 mths) >>>> and was rather expensive so when I was told a forklift fork had gone >>>> thru >>>> the box in transit my reaction was rather predictable. Fortunately it >>>> was >>>> not damaged >>>> 2. Before this happened, I had contact with Airmaster props here in >>>> New Zealand. They could produce a really nice little constant speed >>>> prop >>>> (electrically operated) which would be a real plus for the L2000 >>>> Dimona”s. >>>> However I got a call from the head honcho of NZ CAA airworthiness who >>>> totally rejected the idea. (being a type certified aircraft) Hence the >>>> Hoffmann prop. However now the Limbach engines no longer have EASA >>>> approval, that may change the H36 type certificate to enable “special >>>> Category” or even “experimental” so if there is anybody interested in >>>> installing an Electric Airmaster prop that will fit on an L2000 Limbach >>>> (correct rotation) let me know as I have organised 2 blades (Made by >>>> Sensnich). >>>> 3. I think the cracked ferrells of the props has been caused by >>>> excessive temperature and humidity levels in our uninsulated, shingle >>>> floor >>>> and wet hangar over a long period of time. So I am thinking of a >>>> controlled >>>> heated insulated blanket over the prop and engine. Raychem Autotrace >>>> heating cable seems a good suggestion or a slightly modified electric >>>> blanket. >>>> 4. Currently I have almost finished an annual inspection on H36 >>>> S/No 3667 ZK-GPH It has been a real mission. I found a turnbuckle >>>> fork >>>> end of one of the thrust cables under the engine was broken .. and had >>>> been >>>> so for a long time so was held only by lock wire. Quite strong lock >>>> wire I >>>> reckon >>>> 5. I have ferried it around NZ for subsequent owners and the >>>> aileron control was unacceptably stiff, to a point of “sticking” when >>>> operated. Making it a really unpleasant little rocket to fly. >>>> >>>> This H36 was not a Thai one, but was imported to NZ from Italy (tho >>>> German registered D-KEBA) in 2010. However it does have the early >>>> “aileron push rod in compression when both ailerons are forced upwards. >>>> This was a design problem which was corrected with later serial No’s which >>>> had the rods in a tension mode. The aileron bell crank for the older >>>> Dimona’s is fabricated from tube while the later (tension) bellcranks are >>>> made up of flat plate and there is only 3 bearing sets in the wings as >>>> opposed to 5. >>>> >>>> >>>> >>>> Now for the jucy bit .. >>>> >>>> We made a detailed inspection of each of the 10 bearing sets (5 per >>>> wing) with a small camera and found some of the bearing sets (3 ball >>>> bearings pointing inwards on a 3 piece metal “holder”) mounted on wooden >>>> mounts ie the control rod passed thru the bearing sets and through a hole >>>> in the mount. We found that some bearing sets were not installed dead >>>> centre of the mounting bracket hole The over all clearance being about 1 >>>> to 2 mm. >>>> >>>> The upward load on the ailerons of the H36 when doing say 90 Kts is >>>> REALLY high. And I think is underestimated. Hence the compressive load >>>> into the pushrods is also VERY high forcing the rod to bend like a snake. >>>> Putting a high lateral load to each bearing set. >>>> >>>> So with misaligned bearing sets some of the bearings were not touching >>>> the rod hence “rubbing” on the wooden bearing set mounts. So that is why >>>> the ailerons were really stiff in flight but seemed OK on the ground >>>> >>>> >>>> >>>> To repair was a mission. We didn’t want to put holes in the wing so >>>> designed a cutter system which we made from a short length of brass >>>> turned it down to 18mm, put an 8mm thread in one end, rounded off the other >>>> end and drilled a hole thru the thing used a 6mm drill cut off and a >>>> cutting edge ground so it protruded from the brass”slug” about 3 -4 mm. >>>> we then used an old push rod with the “slug” on one end and a battery drill >>>> at the other and with great care, removed the mounting bracket material as >>>> close as possible to the metal bearing fittings. >>>> >>>> >>>> >>>> So it still needs a test flight but problem solved. I think Hoffmann >>>> has issues because prior to changing the push rod configuration, there were >>>> about 5 different variations of bearing sets in the wings. >>>> >>>> >>>> >>>> If any of you want to see some pictures of the procedure let me know. >>>> >>>> >>>> >>>> Our Dimona (ex Thai) bearing sets had a solid nylon outer including the >>>> outer ball race, so we had no choice than to make big holes and replace >>>> them. As they all were seized Another Ex Thai (currently being restored) >>>> didn’t have ball type bearings, just Teflon (or nylon rings) S/no 3667 >>>> fortunately had proper bearings (ie with a metal outside ball race) and a >>>> nylon “tyre” against the push rod. >>>> >>>> >>>> >>>> So I thought you all may be interested. I am astounded that the >>>> aircraft has been flying for over 40 years like this and would be >>>> interested in your comments >>>> >>>> >>>> >>>> Best regards >>>> >>>> >>>> >>>> Ian Williams >>>> >>>> Drury >>>> >>>> Auckland >>>> >>>> New Zealand >>>> >>> >> --------------------------------------------------------------------- >> You are subscribed to the Dimona Owners Group mailing list. >> This list is archived in public. http://waikeriegliding.com/dog/ >> To unsubscribe, send email to: dog-unsubscr...@lists.riverland.net.au > >
