Red
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Everything posted by Red
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it isn't. no starter discussed or pictured in this thread has a pin in the hole in the end of the pinion I've located and ordered a used Denso 228000-7460 starter as the appropriate model is no longer available new even from the motorcycle dealers who once used it, they all now supply Chinese copies. I'll report back to this thread when I find out if it is the direct replacement I believe it to be -
You are over thinking it, the makers don't vary tooth profiles between similar starters for obvious reasons, there is even one very reputable Rotax engineer supplying an alternatively sourced part that may well be the one I've found. You've mentioned this pin before, can you point me to a photo showing this? To give one example of why this type of substitution isnt always the No No you imply, Rotax used to sell a Rotax Branded oil filter that was actually an easily available Mahle type but with Rotax written on it..this I would suggest is a far more flight critical part and substitution was in fact substitution of the same part. I suspect the same in the case of the starter, that it is a Denso unit already in production for other vehicles and is simply re-badged. This is the whole point of doing the research.
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On the subject of lifting bodies, those of us of a certain age will remember the openiing sequence to Six Million Dollar Man that featured the Crash of a either a Northrop HL10 or M2-F2 (It remains an argued point and seems the fottage used is composits of the 2 types) HL10 Below https://en.wikipedia.org/wiki/Northrop_HL-10
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Fairey nuff, But what evidence did you look at to determine rotation of starter? If you take a look at drawings of a Rotax Starter arrangement and videos showing work on the starter gear train and sprag they clearly show the direction of rotation as does the same information for the BMW F650.
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Danny Check out this one.. Denso 228000-7460 (as used in Aprilia Tuano 1000 and others) I think this is the one, cw rotation all the dimensions match, .9KW Only question is does it have an internal oil seal on the output shaft and it will of course need longer fixings but I dont see that being much of a problem to source.
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This is long winded..caution Its entirely possible I've made a mistake 1: The rotax 912 starter: looking from rear of engine and rear of starter....the crank rotates CCW...there is one idler gear between the starter and the ring gear on crank Therefore the starter motor rotates the same direction as the crank when both are viewed from rear...therefore Rotax starter motor turns CCW when viewed from its rear so CW when viewed from its front/nose 2: The BMW F650 Starter: Looking from the right hand side of the engine the crank turns CW...there are 2 idler/reduction gears between the starter and the crank so starter turns CCW when viewed from this side...BUT the starter when viewed from this side has its front/nose pointing towards you. So in conclusion if you look at both starters from the nose then the Rotax starter is CW and the BMW Starter is CCW and therefore not interchangeable If someone has time to double check all this I would greatly appreciate it
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I would have thought cooling was an issue but apparently it had the same fan cooled Franklin engine as the Republic seabee and was actually better cooled during taxi and ground runs than its conventional counterparts in tractor installations
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Is the wing partially detached at the rear?
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Looks exactly like the Air Training Corps badge we all wore on our berets in the UK during 70's 80's. I dont know what the current badge looks like as they've renamed (dumbed down) the name of the organisation to "Air Cadets"
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Ouch. I think its best to regard any forum as a gathering of people with some shared interest who can often offer advice and reccomendations but as we are all human its natural that opinions, humour and thread drift will occur. Regarding it as just an information service will I fear lead to dissappointment.
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They have great Hats...really Big Ones and silly marches to rival the Russkies
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Hehe, I sometimes wear a military Growbag simply because it prevents cold drafts up my back, I dgaf how it looks tbh but usually have a hoodie on over the top of it so not very top gun
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A 2x2 bogey would be pretty much impossible to steer and even trying would introduce severe sideforces on the strut unless the bogey itself was either articulated between the front and rear pairs or both pairs could be independently steered like some 4 wheel steering cars..it would make the whole setup very complex -
The second picture has the person photoshopped in at a fake scale to make the gear look bigger, there is no aircraft with an undercarriage that size (also its not a C5 undercarriage anyway) Here is a video showing work being done on the Gear...
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I've only seen diagnosed cases of ADHD that are probably near the top of the scale in severity and wouldnt want to give any of these a Pilot's Licence. The problem I see these days is the increasing tendency to diagnose conditions that are very mild as I believe everyone has what could be catagorised as some character/personality/mental condition if you look closely enough...there is no such thing as normal. Basically over diagnosis, a child who was just classed as being a bit naughty in the 60s and perhaps just grow out of it will now be 'special needs' and carry the weight of that classification for life.
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What are the differences?
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Suitable hand held radio - Your advice, please
Red replied to old man emu's topic in Instruments, Radios and Electronics
The test was looking at how a handheld would perform in an emergency just taken out of your flight bag and used as is -
I've done 7 hours in one day solo in a microlight but I was 12 years younger and 4 other microlights were doing the same trip so we could support each other along the way, I wouldnt do it now Plan to overnight if needed and listen to your body
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Found this explanation, the presure sensors go to an ADC then from there its an electrical signal to the flight displays, so no need for pitot/static lines inside the pressure hull. I think any backup instruments are also fully electronic these days Oh hold on....further reading indicates the avionics bay that the ADC resides in actually pressurised so that throws out my theory of not needing really strong pressure lines from the static at some point inside the Pressure hull ...doh Anyway Ill stop my rambling nonsense now as it has no relevance to our systems and Im just blurting out stuff as I learn it (shouldnt go posting before my second morning coffee)
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Physical tubes are no more failsafe than cables. I think you mean there needs to be redundancy. There has to be a pressure tube to the sensor of course but I'm not convinced that any of the current glass cockpit setups use anything other than electronic pressure sensors that wouldn't need to have the sense tube enter the pressurised cockpit or display itself. The efis in my microlight does have the sensor in the panel but that's non pressurised cockpit of course. I honestly don't know though, just rambling
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I checked the calibration on mine once using a syringe tee'd into the static line, Iirc 5000' was the highest altitude I could replicate the vacumn force needed to even simulate this mediocre altitude was quite an effort. actually that raises a question....what material are thestatic lines when they enter the pressurised section of an airliner, they must be rather stoutly engineered so as not to collapse with the pressure differential, thick walled stainless tubing I guess or something similar Actually now I think about it in this day and age they are probably electronic pressure sensors outside the pressure shell with just wires to feed the instruments coming inside...but they couldnt do that in the olden day of first generation jetliners
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There is plenty of evidence That higher speeds equal higher probability of accidents and worse outcomes when they happen https://safety.fhwa.dot.gov/speedmgt/ref_mats/fhwasa1304/Resources3/08 - The Relation Between Speed and Crashes.pdf https://www.brake.org.uk/get-involved/take-action/mybrake/knowledge-centre/speed/speed-and-injury There are tons more studies that come to same (rather Obvious) conclusion, Speed isnt the only factor of course, but its a major one.
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Yes Cognative decline is very real and nobody is wholly immune to it's affect. In the current UK Driving tests there is a section where you asked to watch a video taken from the drivers viewpoint and you have to click a button every time you see a developing hazard such as someone approaching a crossing or a bicycle about to manouvre around an obstacle. I think this test should be required to be re-taken at perhaps 70 years old it would catch a lot of unsafe drivers either due mental decline, slow reactions or simply poor eyesight. How you could transfer this regime to Pilots is perhaps more complex. Edit..on the flipside the standard of driving in youngsters in this country is frankly appalling, though in this case not to do with ability but mainly poor attitude things that are far harder to tackle as they would require changes in society as a whole
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I guess after that it's a long shot and you may have already gone away, but Could you post the Videos you say you took?
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What do these Pictures have to do with the thread?
