Marc Humphries
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Everything posted by Marc Humphries
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The dangers of NOT having insurance
Marc Humphries replied to David Turner 5's topic in All Things Model Flying
Dan and BEB, See my post above for fag packet calculations that say there's one fatality every 6.5 million model flying hours. If an average flight is 10 minutes, then I can have over 39 million flights before I might "open the bomb box". So making a million flights will have the odds seriously stacked in your favour. -
David, Your instincts are right. I think a JST is good for around 5 to 7 amps absolute max.
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The dangers of NOT having insurance
Marc Humphries replied to David Turner 5's topic in All Things Model Flying
Very interesting thread. @David Perry Those of us with the misfortune to mange projects will recognise your arugument of "Impact" and "Likelihood" when we compile our risk registers and mitigation plans. Manging risk nearly always comes down to how much of it do you want to buy out? Any activity that is de-risked 100% will be unaffordable - so it boils down to what is an acceptable level of risk. So - let's have a go... Assume: 50,000 active model flyers (36,000 BMFA members plus another 30% or so) Making an average of 3 flights each per week, each of 10 mins duration In one year - 1.3 million model flying hours. In 10 years - 13 million flying hours I know there were two tragic fatalities in the last 10 years, which equates to one fatality every 6.5 million model flying hours. Put another way, if I flew my model plane 24 hours per day for 742 years - I may cause a fatality. Is that an acceptable level of risk? Before everyone starts to post - I know that fatalities are the most tragic and extreme outcome of a model flying incident. There will be many more dings to cars, property etc. But this sort of thing is what an actuary will do. Model flying is a very low risk activity which is why our insurance premiums are so low - and that about £30 per year buys out the risk involved in flying model aeroplanes. Edited By Marc Humphries on 16/09/2010 13:43:33 -
"Spain as a poor country does not have the broad base of flyers that the UK enjoys ..." Well, I agree that they do not have the equivalent of the BFMA - but they are cetainly not a poor country: Spain's mixed capitalist economy is the 12th largest in the world, and its per capita income roughly matches that of Germany and France for it's 39 million inhabitants.
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Cheers Tim
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Tumble weed and bell tolling...
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Blaze with veho mini cam
Marc Humphries replied to matthew carr's topic in Aerial Photography, First Person View, UAVs
Ooops! Typed "matthewandlaura" into Google rather than YouTube search box by mistake - and got some very different websites that use cameras... Honest mistake - honest. -
Blaze with veho mini cam
Marc Humphries replied to matthew carr's topic in Aerial Photography, First Person View, UAVs
Crikey David - 4am... Thought your rave days were behind you... -
Just wondering - as it's not listed anywhere.
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Glass fibre tube fuz - takes me back. Is it a Ronytube? Built a few A1, F1A and HLGs with these tubes. Post a picture - may be of interest to some members who have never sampled the delights of auto-rudders and KSB DT timers.
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I am amazed by the longevity of this thread and "passion" it has produced. Aren't we guilty of over complicating things? We take off, fly around for a bit and land. We are not trying to get from Heathrow to JFK with 400 passengers on board with a full fuel load. Nor are we launching a shuttle to dock with the International Space Station. Flying model planes is meant to be an enjoyable pastime - not an extension of the rigours of our legislative working environment or the real responsibility of a public model show. Turn up, start up and relax!
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Jeez Nick - just seen the pic of your trashed Formosa. You did a proper job on that!
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Hi Tony, I think you'll be fine with a Formosa as a second aileron model. It has really forgiving flight characteristics yet can ramp up the performance when you are ready. It really does need a brushless conversion though - 100 to 150 Watts is ideal. Your throttle becomes your best friend. At 50% the Formosa will cruise, giving you plenty of time to think - yet still loop and roll. At full chat, it becomes quite lively - able to pull three or four vertical rolls. Here's an old thread that will give you some clues.Formosa RocksEdited By Marc Humphries on 02/09/2010 09:34:23
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Also read on RC-Groups that one guy melted the ESC. Then he casually mentioned he used a 4S pack. Duh! Another guy told of a wing fold after 20 flights or so. Is this much awaited plane having a few teething problems?
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That's my girl!
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A beautiful day down here in my garden. Edited By Marc Humphries on 01/09/2010 14:34:52
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David, believe me I keep saying it's time to go. But the thing flies so well I just can't do it! As I fly from quite rough fields with hand launches and belly landings, all my intended replacements (Extra, Pulse, Funtana etc) get down selected because the undercarriages will last precisely one landing...Edited By Marc Humphries on 01/09/2010 14:03:05
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Well... the old girl came a cropper yesterday evening. Flat calm and bright sunshine saw me put 4 packs through the thing. Inspired by the IMAC article in the latest RCME, I had a little routine in mind. All was going well until the last landing on the last pack. Oh yes, it wasn't me trying the roll at the top of the loop, or the stall turns with hestitation rolls in the up and down lines. Not even the ridiculously slow inverted passes before flipping the thing upright with a burst of throttle and full down. Nope, in an attempt to land as close as possible I let the old girl head straight for me. The wings started to rock, and as it flew past me, in the time it took me to swivel round, it hit the deck port wing first. Fuselage in two pieces, snapped behind the canopy. Wing bolt holder pulled through - still attached to the wing. One more split in the cowl. I know - I know, it's a four year old piece of ceiling tile that cost all of £25. However, this morning saw all of ten minutes of repair time with cyano and some light weight glass cloth - and she flies again - or will do in about 15 minutes time. Keep the faith; Keep the foam.Edited By Marc Humphries on 01/09/2010 14:03:51
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Planes or the dudes?
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Paul, That's a very clean, well designed site. Is is based on proprietory shop software? Marc
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Best model to fly in a wind? Here's the glib answer - any half decent glider from a slope
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Amazing insight into full size aerobatic flying from five times champion Patty Wagstaff. She should be well known to you if you have MS Flight Sim! ps Who said Cougars can't fly Edited By Marc Humphries on 25/08/2010 15:25:27
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Some sort of set up like this will work. I guess the adjusters will sit on the fuselage (or a small cross piece mounted on the fuselage). In the past i've used the nylon bolt to cut a thread in a piece of firm balsa - remove the bolt then drip some cyano onto the thread to form a harder surface.
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