Jump to content

skippydiesel

Members
  • Posts

    5,154
  • Joined

  • Last visited

  • Days Won

    49

Everything posted by skippydiesel

  1. I concur - If possible, its even more long winded than myself some interesting tips on fuel plumbing but very much focused on the Rotax 912iS. I have not viewed the whole thing & have skipped past a lot of "stuff" Seems that he had a loss of power, on a hot day, over the Rockies (+10,00ft) which he put down to fuel vaporisation. Coupled with that he had to contend with turbulence and mountain wave (he seems think fuel agitation was also a factor in vaporisation). Don't know if he mentioned, that the fuel injection system will return hot fuel to the tank - not something that will help minimise fuel vaporization on a hot day. (30+C). In addition the iS has significantly more complicated & extensive fuel supply system, than the carburettor variants, just begging for heat load issues. The focus is on the Vans (RV) 12 and US summer climatic conditions. In Australia that's almost all the time, save for a few short months in winter - we just manage the possibility of fuel vaporisation, as one more factor in safe flying (just like carb ice) no hysteria required. I have experienced (912ULS) fuel vaporization at rotation, on a near 40C takeoff (I don't usually fly when ambient exceeds 30C). Aborted TO. Returned to parking area, did as intensive eyeball engine/ fuel supply inspection as I could. Lined up and after extended run up/checks, took-off without further incident. Never had a vaporisation issue in the air.
  2. Nev, my friend - leaders of all persuasions are selected by their peer group, as potential winners. A winner is someone who will support/further their agenda. The agenda is the list of needs/wants of the people (plus some self serving likely hidden agendas), as perceived by the peer group, who will provide sufficient support for the party/group to gain power. Ultimately it is we (even in a dictatorship) who provide the environment, that the selection group (party, club, military, etc) responds too. We need to take responsibility for selecting our leaders.
  3. Most are rectangular . Could also be a square. Much much easier to fabricate a radiator with strait edges I have seen rectangular radiators in a longitudinal curve At the end of the piratical day, its what will fit the space available AND deliver adequate cooling.
  4. Prerequisite for (most) aspiring to high office - A conviction that, somehow you have been selected to lead the the great unwashed (us). Now in my dotage, I have observed that my view (not unique) holds good, for almost all leaders, no matter the organisation, be it religious, political or business. Such leaders are, unsurprisingly, given to aggressive displays of power, the changing of laws to suit their agendas, secrecy, unethical (even if not expressly illegal) activates. For the most part they rise to power over the bodies (literal/& figurative) of their colleagues. That this should to be the case, demonstrates that we as a species, have not evolved beyond the small tribal groups of our past, where we need to have a strong (sociopath) leader for our protection. I am saddened by our inability to select leaders, who do not behave in this way.
  5. If we didn't mistrust (with good reason) our political masters, we would not need to have elections - they could just stay in the job for life, doing all the good works for our benefit. In reality power corrupts. Well illustrated by the Australian democratic system, where the party in power tends to stay in position for several electoral cycles, by the last session(s) all sorts of rorts are being, almost openly, committed. So unethical do some politicians, get they gaze unblinkingly into the TV camera and state, without apparent guile, that their completely unethical act, is not actually forbidden ipso facto, approved?????? The far right and the far left, are brothers in hatred. Even if derived from supposedly different perspectives, more often than not having similar manifestos. Never forget, the German Nazi party (far right), was just a small band of rabid fringe dwellers, who tapped into (right time & place) an economic and social depression as well as a commonly held urban myth (Jewish economic World domination) and the popular notion of Eugenics (racial purity). Communism (far left) the extreme expression of socialism, is just as bad and probably responsible for even more genocide/repression than the Nazi's.
  6. Its almost the Mustang concept, that isn't working for my Sonex - hence the return to the workshop for a redesign/fit. The new and improved(??) concept, is to have the coolant radiator at the front (innovative?) - still working on the oil cooler location.
  7. Marty_d, I will be wrestling with a very similar problem,in the next month or so, when I will be returning my Sonex/Rotax 912ULS to the workshop to completely redesign its cooling system. Have you considered a sloped back, vertical (longitudinal?) placement between the exhaust pipes? The radiator does care what plane its in, just that the air flow passing through it, is from high to low pressure & is sufficient to carry enough heat away.
  8. IBob - veeery nice! may need your help in the near future to redesign/placement my Sonex cooling system.
  9. I feel for you Spacesailer - another observation (don't yawn!) ; We have a Judiciary/Court which is supposed to be independent of Government. The Judiciary, being independent, is supposed to apply the Law with consideration to the facts/circumstance (not political grandstanding, revenue raising, etc). Its a founding principal of (most) Democracies that Court hearings be public - specifically so that the public can see that the actions of the court are fair & reasonable. The Gov. as the Law maker, is not always happy with this democratic approach; Citing societal expectations, etc the Gov. will restrict the independence of the Court by making laws requiring mandatory sentencing, for certain transgressions and guilty by way of non compliance (your crime). ie the Court has little or no discretion (independence) in these areas. In matters where the Gov may be/is embarrassed, similar overreach is enacted, the excuse being State security is at risk (????). In these cases the hearing will be conducted in whole, or part, in secret (in camera) (shades of Totalitarian States?) So much for Democracy. Your "crime" is one of non compliance with a road rule - you are without doubt guilty, without trial (what happened to "Innocent until proven guilty"?) If you feel strongly enough about it you may plead your case with the court - you are unlikely to be exonerated (remember you are guilty) but may have a reduction in the penalty eg no financial penalty, mandatory (conduct) points retained. Road rules are important for all road users safety BUT we have a plethora of rules that have little if anything to do with safety and many that are about safety but do not attract much attention (revenue?). Most of us can identify with your situation (probably been there) and know that you are the victim of circumstance, not a perpetrator of unsafe driving behaviour. The Law is about safety. Your actions were not (in the circumstances described) unsafe however you broke the Law (probably something along the lines of running a red light/cuing across an intersection) The Police (now joined by a host of pseudo police) do not have the luxury of exercising judgement and may face censure if found to be doing so. Despite your reasonable appeals/protestations, you have been booked! On reflection, its a wonder to me, that you, a danger to society, are allowed to wonder the streets & express your displeasure in/on a public Forum 😀
  10. Disclaimer: No academic qualifications/knowledge - Observation; Police forces, around the Globe, are an arm of Government, much more so than the Military (some countries one in the same). Their job is to enforce the Governments rule of Law. The Police, like the military, abdicate their right to act on their personal morality/ethics (independent judgement), in favour of the Law. Ipso facto - do not expect a policeperson to exercise judgement.
  11. There you go - double dammed 😭
  12. OME -Quite the rant - I have no idea who, what, you are referring too - please explain.
  13. If you want to lodge a claim - recepts, & records of consumption , etc would be required. I am sure there are farmers/miners/fishers/etc who could abuse the system but the penalties are usually savage for those caught out - ie not worth the risk.
  14. Has anyone tried to claim back the road tax (47.7%) component of their fuel cost? Could be urban myth but I understand that if the fuel is to be used for an off (public) road purpose, the road tax can be claimed back.
  15. The Down Side Of Safety Devisces/Systems: The history of "safety" systems/equipment, fitted to cars, demonstrates that there is a strong tendency, by the drivers (for the mots part humans), to take risks/exceed their skill level, that they would not have chanced, in a non safety enhanced vehicle.
  16. Good on yah Nev - missed it - thought you guts were just banking on about acceleration etc Craven appologies!
  17. I don't think anyone mention prop noise - the closer the tips speeds are to hitting the sound barrier, the nosier (in general) the prop. The Europeans are big on noise pollution - small propeller aircraft manufactures are obliged to take steps to meet the standards - hence most of the newer small aircraft, from Europe, are noticeably quieter, than their US equivalents.
  18. Its great to hear the concept is moving from testing to the production stage. Suggest you move to Engines & Props for wider exposure
  19. Exposure (doing something more often) does increase the likely hood of an incident BUT the very same exposure, reduces the likelihood of an incident where skill & the maintenance thereof, is a factor (eg minimum of 3 take-off & landings within 90 days).
  20. Doesn't make aviaton sense -more hours, usually results in higher skill, lower risk - they need to talk to their actuary
  21. I think that pilots of both high/low wing aircraft develop cross wind landing techniques to meet the challenge of their aircraft approaching the ground in a less than optimal wind direction. For pilots transitioning from one configuration to the other, lack of familiarity makes them feel that the last aircraft was somehow better - its all in the mind.
  22. The technology & practical examples, exist today, to have a 2 seat aircraft stall at 27 knots and high speed cruise at 135 knots ,with an empty weight of 300kg and a (current) Max TO of 600 kg all on 100 hp. Don't ask me how clever the wing profile is, I don't have the knowledge but one factor is obvious - Fowler flaps (or very similar) which retract, to an almost seamless integration, with the wing itself, greatly enhancing slow speed performance and with it safety. Jab have ahead start, in their composite airframe. Surely they could improve on the current simple Plain flaps giving a rather underwhelming stall and for class fast (long) landings. While they are at it, do something to improve the "feel" of the flight surfaces (junk the pull-me-push-yous) and may be for the 2+2 seater (J230 & variants?) they might consider the Rotax 915 with optional CS prop - now we might be moving towards a "great flying" aircraft
  23. As I said "hard to beat" on the stated characteristics BUT I still question the "great to fly" statement, which sounds to me, to be comparative (with what?). I think of something that is "great to fly" as being fun, manoeuvrable, (use ailerons AND rudder) great TO /cruise performance (for available hp), etc etc Sorry but I dint find Jabs (Yawn) to be so.
  24. In many ways Product Liability is a good thing, in that it strongly encourages (forces) manufacturers to consider the safety of the consumer BUT as will all things there is a down side - Car Systems - Cars today have all sort of systems to help reduce the chance of the driver making an error eg anti (lock) skid brakes, lane change warning, proximity warning/auto braking, automatic head lamps/windscreen wipers and when all else fails body crumple zones . Then there are the features to make life easier for the driver - power steering, auto transmission, direction signal light (Optional use) noise cancelling, hands fee phone, multi channel radios, etc. (Speed cameras should be in there somewhere). I call this "Dumbing Down" - not that I wish to return to hand signals, non powers brakes , etc etc I stand to be corrected, despite all these wonderful innovations, we still seem to be having car accidents, at a not too dissimilar rate, as a percentage of driver numbers WHY? My guess we have failed to address the root cause of the problem, driver skill. I guess this will be fixed when we substitute a robot for the driver - no doubt your insurance premium will rise precipitously, if you opt to drive yourself🤣.
×
×
  • Create New...