skippydiesel

You should be able to check that the ball is giving accurate information on the ground. Use a known acurate builders level (same bubble reading when level reversed) place across cockpit, lift undercarriage to to level fuselage. Your ball should be centered - if not instrument may need adjustment. In theory, if the aircraft is in balanced flight it should not matter where the ball is located (left, centre, right of cockpit) the ball will be centered. No matter your perception,that the aircrafts performance remains consistent, if ball allowed to "drift", aerodynamically the aircraft will be less efficient. Yaw can be produced/controlled by aileron and /or rudder. This is why I said - "An adjustments to one flying surface will nearly always require adjustment to others." When you are in Cruise, what rudder & aileron inputs are required to get the ball centered? If just rudder -attache a temporary trim tab to the rudder. Size & location, your best guess, unless you can view other identical aircraft that may already have trim fitted. Once optimum, rudder tab size, location, arrived at you may find that in Cruise the aircraft tends to consistently, slowly "slide" (wing drop) in one direction. If flaps can be independently adjusted, you may be able to counter this drop by either raising/lowering one flap. If flaps not independently adjustable, a little more rudder trim may be helpful.😈

I am trying to design a bungee cord, one way trim system for aileron & rudder. The cord will need to be: Strong enough to maintain desired adjustment Weak enough to be easily overcome by pilot inputs ie not impede normal use of stick/peddles Durable - consistent elasticity over time Prefer two diffrent colours, so as to easily ID the two separate systems Able to be used with directional pulleys eg aileron direction of pull, will be away from pilot input direction I could do with some help; Selecting likly cord - guessing 8-10 mm Source of reliable product Finding lightweight pulleys suitable for cord diameter Marine hardware stores would seem to be a likly supplier however pulleys (single) come in a bewildering array of shapes, sizes & cost - max rope size seems to be 5mm - online perusal leads to confusion in the aged mind. 😈

Every aircraft I have flown had in cockpit elevator trim adjustment - does your comment (above) mean that you don't have this facility? Again, every aircraft I have flown, requires changes to trim when speed changes - TO?/Climb, Cruise and in circuit Pre Landing and with Load changes (even fuel consumed). Some of the aircraft had, in addition to elevator, aileron/rudder trim. My current aircraft has in cockpit elevator trim and a very small fixed rudder trim (tab). In Cruise she flies straight & level (ball centered) without any hand/foot inputs. A little right rudder is require on TO/Climb. As a result of recently carrying a 78kg adult passenger, I am in the planning process, to install a simple one way bungee cord, adjustable trim, for aileron & rudder to counter the effect of having such a "load" in the right seat. Back to your aircraft - Some suggestions/observations: Before making any adjustment to flying surfaces be sure that you are starting from the kit/plans/manufacturer's advised settings for all flight control surfaces. Measurements may be in degree relative to a named location and or distance (inch/mm) to/from a certain point (eg spar). If fitted with a control stick/column, fix it in the vertical lateral plain (make a bracket with straps/Velcro) before aileron adjustment. Stick position for elevator adjustments should midway between full aft/forward. An adjustments to one flying surface will nearly always require adjustment to others. All adjustments should be small/incremental followed by a test flight to judge effect. When I adjusted my aircraft lateral trim, I made careful (mental ) note of what inputs were required to have the ball centered during Cruise. In response to aileron correction I adjusted my flaps. For Rudder, I cut several diffrent lengths of aluminium profile (see below from Bunnings Aero Space) fixed one piece at a time, using industrial double sided tape, to the trailing edge, mid span, of the rudder. Fix so that the crescent shape deflects the wind blast away from the direction of adjustment ie right rudder - tab on left side, trailing edge of crescent out. I only needed a tab that is about 50mm long The white tape is just an aesthetic effect ie little fixing quality. Hope this helps. 😈

Rotax Owners Forum https://www.rotax-owner.com/en/rotax-forum will have all the answers. ".........note in the specifications, as being unsuitable for ultralight aircraft" Cant comment on the suitabity of "Penrite MC-2ST Full Synthetic Two Stroke Oil" however this sort of comment is often applied to products, where the manufacturer is seeking to avoid/minimise liability,should their product be implicated in an aircraft incident eg Facet Fuel pumps, widely used by the light aircraft fraternity, explicitly warns against aircraft installation/use.😈

Never! Age slows you down but "window shopping" lives on😈

Please expand 😈

Many many years ago, I and my family flew Joburg/Sydney in a Super Constellation. Dont remember a lot. Think it took the best part of 3 days. Overnights in a hotel. Plenty of room in the aircraft. Wonderful cabin crew. Menu choices. Arrived fresh & ready to play. One memory that stuck was an engine shutdown over the Indian Ocean - apparently "to save fuel" ????😈

So Sling did not supply the aircraft and/or any finance - just a "happy" coincidence.??? The performance is mediocre (neither good/bad). Compare like with like - check out ATEC Faeta, Pipistrel Virus (SW). Both Rotax 912 ULS powered, 2 seat, lightweight aircraft Note on the Virus; - since being purchased by the Yanks its Stall has gone up as has its Cruise. However its independent CAFE challenge figures were approximately; Stall 30 knots - Cruise 135 knots. I don't know what the Yanks have or not done to change the performance (hype?). My real world ( aircraft instruments ) has the Faeta at the same figures. Last time I checked a base model Faeta/912 ULS (factory build) was sub $200,000 Au - I believe the Virus was well over $200,000 Au I have never flown a Virus but believe it has very nice handling. I can vouch for the Faeta - stunning! so good its almost intuitive. So not all aircraft manufactures market as aggressively as Sling. Cant blame them for that however its disappointing when pilots who should be looking beyond the hype are so easily sucked in. "The Sling 4 TSI and Sling High Wing are both '4 seaters' with a higher useable load than a Cessna 172, altho none of the three are true 4 seaters." The "gaol posts are moving" - I stand to be corrected -the video/comparison was a 2 seat Sling powered by a Rotax 912 V Cessna 172😈

Burnie my friend - Do you really believe that Sling are underwriting this trip to enhance awarnes of Crones????? I am sure the Sling performance is adequate - never suggested otherwise. My comments have consistently been to highlight the marketing hype which (along with its purchase price) is completely out of proportion to what it delivers.😈

Cessna 172 is a tried and true, 4 seat (sort of), old technology (never mind what instrument panel is installed), high wing, comparatively AvGas guzzling, much loved by the thousand who learnt to fly in one of these work horses (as I did). The Sling is a modern, hot looking, 2 seat aircraft. Its only common feature with the Cessna is its metal construction. Comparing the two would be as unfair and irrelevant, as comparing the physical performance of an old fart (me) with a 21 year old - no contest! Comparing the Sling with other modern aircraft, of similar design/mission objective, with same engine power, seating, is the only rational way to go. When you do this the Sling is just okay - nothing special (a Corolla of the air). As I have said - I have nothing against the Sling. No doubt a worth aircraft but I cant stand the irrational hype and the purported acquisition price $400,000 (if true) is totally insane.😈

You have to acknowledge Sling marketing is top notch, taking every promotional opportunity. This mornings news- a teenager, suffering from Crones disease, is flying what looks to be a Sling, around the World. Keeping an aircraft in the media forefront, will likly reinforce the perception that this is somehow an exceptional aircraft - potential buyers impressed by marketing hype, probably look past the underwhelming performance.😈

is this progress? Was a time when the journey was something to enjoy, remember. Now its something to endure, get over quickly. 😈

Reference: Rotax Owner (one of many articles on the topic) https://www.rotax-owner.com/en/912-914-technical-questions/9804-912uls-ngk-dcpr8e-spark-plugs-tools?start=0 😈

Hi Danny G, I always thought your initiating this topic was/is a stroke of geniuses. However it needs to be summarised into a logical, easily searched, list, free from the tangential debate that has accompaniment some of the entries. The big question is - how to go about making the list??? A start would be dividing the list into common aircraft, engines (some entries would likly be under two or more headings) What think you? PS - Cost effective, temperature strips may be a valuable item in managing your engines heat impact on vulnerable/expensive components. 😈

FYI: The Superglue, I used to effect a temporary repair, does not react with Perspex/ Acrylic Temporary Fix to get me airborne again I followed Ian Linke's ([email protected]) recommended temporary fix using lightweight woven fiberglass & superglue I strayed (with Ian's approval) from lightweight, ordinary woven fiberglass, to left over wing covering fabric. The wing covering fabric may have too tight a weave, which tended to trap air-bubbles, which were quite difficult to remove. A more open weave may be easier to work with. 😈

The above statesmen is missing almost half of what I wrote; "Getting ready to weigh tomorrow. Just need all items and engine oil out. Nynja at it’s level orientation for weighing." "I received a text from RAAus Tech that all my Nynja’s paperwork regarding w&b has been approved" I assume CASA has reinstated RAA's authority to approve W&B testing. However from the little you have shown & commented on I would question the legality of your process; From imperfect memory; My W&B conducted by Ceri (Kerrie) Bartlett <[email protected]> , November 2022. The aircraft must be weighed with ALL permanent items on board (including oil, coolant, POH, upholstery, extinguisher, etc). Permanent items listed/documented Fuel tanks must be empty. The aircraft will be weighed with & without pilot - this is how you get the Empty & Zero Fuel Weigh. Can only use certified scales, usually suppled by certified W&B person, who signs of on all documents/calculations. Weighed on a level floor, in an enclosed space (no wind/draft effect). Unless the rules have changed (always possible) your weighing efforts may have only delivered interesting (not CASA approved) data which is of suspect legal validity.😈

Getting ready to weigh tomorrow. Just need all items and engine oil out. Nynja at it’s level orientation for weighing. You must get a certified professional to do you W&B. Assuming that CASA has not reinstated RAA permission to do so. Ceri (Kerrie) Bartlett <[email protected]> , did mine November 22. The aircraft must be weighed with ALL permanent items on board (including oil, POH, etc). Fuel tanks must be empty. The aircraft will be weighed with & without pilot - this is how you get the Zero Fuel Weigh. Can only use certified scales, usually suppled by certified W&B person who signs of on all documents/calculations.. They preferer to weigh on a level floor, in an enclosed space (no wind/draft effect). Unless the rules have changed (always possible) your weighing efforts have only delivered interesting (not approved) data which can not legally be used for flight. 😈

I have been curious about the Max temperature that my Rotax Ignition modules are subjected to. FYI: Rotax 912ULS Max Temp. 80C Found non reversible (irreversible) temperature strips used in automotive applications, for a reasonable price (compared with other suppliers); https://www.autosport.com.au/racetech-temperature-indicator-strips I already have a single thermocouple, measuring under cowl temperature, at the one location - top of firewall. The max temp may not be in the air but on the ground, after shut down - will be interesting to see either way. 😈

Thanks Bushcaddy105 - Sounds like the longitudinal (elevator) trim I already have (see below). This wheel moved a cable attached to a spring, which in tern is attached to my elevator torque tube. The movable/adjustable spring is apposed by a fixed spring. I have a mental image/plan of how to set up an aileron trim, using a bungee cord onto my aileron torque tubes. Still working on rudder trim, which cable actuated. Unlike the elevator trim (above), which must accomodate varying air loads, generated by speed, the aileron & rudder adjust need only be in one direction as trim on these surfaces is only needed when I am carrying a full sized adult.😈

I did my BFR a few days ago. I have flown with my 65Kg wife in the Sonex but this was a first with a full sized person - my 78kg instructor/examiner. I was a bit concerned about how the aircraft would perform, weight & balance being right on the edge. The ground role & climb out were very diffrent to my usual solo experince but she got there. The bit that really surprised me was how out of lateral trim the aircraft was. I don’t usually need any rudder in Cruise or gentle turns - the ball remains centered. With two up I needed to carry left aileron (understandably ) but also a lot of rudder. The changes, in flight characteristics, made my performance in TO/Climb Out/Tums less than “smooth”. I have been thinking about KISS in flight adjustable aileron & rudder trim modifications. My last aircraft had a simple elastic cord/ pully & sailing cleat to adjust aileron left up to accomodate a passengers weight. Other than a fixed trim tab on the rudder, I have not used a rudder trim. Wonder what, in flight lateral trim adjustment, ideas you may have employed ???😈

I don't bet but if I did I would bet on this aircraft never making it to Au for anywhere near that price UNLESS; You get in now , before they realise how much of a loss they are going the wear. The Au dollar get better than parity with the US dollar, sometime soon (in your dreams)😈

Oshkosh - somewhere "Beyond The Black Stumps"???? You guy are a sloooow as the SE-1 😈

I think the Irish Air Force had two seat Spitfires - it correct , probably where it originated 😈

They gave advice (past tense) now they are gloating - nasty!😈

You guys - What does it take to confess to making a mistake??? Your a pack of "know it all's", who have never gone out on a limb - pull your heads in. IF my little experiment had worked you would all be claiming you told me so anyhow. Sad Sad people😈