Some time ago a gentleman named John mailed Bumpy Green requesting assistance in finding the infamous Yellow 'bendy' props in my Pico-Jet thrust test article. As it was he was the first of a few people I purchased these for and sent via the post. John sent along some pictures of his workshop and models from over the years. Enjoy this delve into a fellow aeromodellers history and modelling records.
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It All Began With... |
An Email out of the blue :-
Hello,
Thank you for the most interesting and informative Bumpy Green article on "400" size props.
I am currently having a lot of "stress-less" fun with a Twin Star and would like to try a pair of the Yellow bendy props (I first read them as "beny props") and I ask if you can advise me as to where I can buy them.
Once again, many thanks for the useful article, which I have printed out to put on our club notice board.Kind regards
John Fairs
Northampton Model Aero Club
Well that made us proud as punch and as they say, set the ball rolling for a long succession of Emails for the sending of said bendy props in the post. John then went on to reveal some history of a number of his models and an account of his Easter Sunday at the Indoor Nationals.
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The Workshop... |
John has the kind of workshop most of us can only dream of in a standard household. With powered bench tools, comfy seats as well as more models, spares and r/c accessories than you could shake a stick out we at Bumpy Green can say we are just a little envious. ;)
Johns very impressive workshop Lots of storage and comfy chairs too - ideal. Plenty of room for some large projects with a convenient wall for large plans too. With so much room why not fill it up with model planes? We count 13 in this picture alone.
Lathes, a pillar drill, soldering station, fret saw, powered bench belt sander, flight battery charging area and even a stereoscopic microscope grace this well equipped modelling haven.
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The Models... |
John writes:
Cessna 152 built from the Pilot Kit. I started this in 1981 and finished it in December 2001 - is that a record?
Robbe Me109 (deceased) which flew with an Overlander 650 motor, (Al's Hobbies) Dymond 35Amp speed controller and an 8.4volt 2400mAh NiCad pack.
The paint is some very old (it was in fashion sometime) emulsion paint my wife had stashed away under the stairs, which I thinned down by 50% with tap water and brushed on 3 coats with an ordinary artists paint brush. The underside, which you can't see was from another old pot of emulsion paint, this time a very light blue.
The machine guns which are the intake cooling air for the speed controller are pieces of the outer casing of a felt tip pen. The cooling for the NiCad pack is through the hollow dummy exhaust and the cooling for the motor is through an ingenious screw device built into the spinner.
The plane flew as on rails first flight, climbing well and capable of good loops and rolls with the Overlander 650, but it was later shot down with some spurious interference we seem to get occasionally in our flying field.
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A couple of shots of my 26" span Hacker kit DH Beaver, powered by a 120 Gasparin CO2 motor. The first shot is before covering and you can see the Gasparin 120 installed.
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DH Beaver finished and ready to fly.
This is the "Ivanhoe" glider that was my very first radio control model project way back in the mid 70's.
I recently dug it out, cut ailerons into it, cut the front off and installed an Overlander 600 motor running off a 7-cell 2400 pack and it flew magnificently - even accomplishing some very nice, but basic aerobatics.
That is until I went to fly it without checking what model my Futaba FF8 transmitter thought I was flying and upon the usual hand-launch it flew vertically into the ground - as UP ELEVATOR on my Twin Star, which I had been flying previously, gave DOWN ELEVATOR on the servo operating the elevator in the Ivanhoe.
So, there are some hidden pitfall for the unwary using these new high-tech products.
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Blisworth 1978 and the same model again at Blisworth but in 2001, is this another record? I believe the Mustang is from a Cambria kit and is powered by a OS25fsr from the same period.
Incidentally, the other man in the earlier photo is Bill Harding, a well know aero-modeller who, over the years has organised many events at Old Warden and for some time he was the owner of DB Models. He still has a stand selling modelling items at many of the modelling events.
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My day at the Indoor Nationals... |
My first experience of indoor flying was gained during our Easter Sunday event and I was so enthralled from the first moment I saw these graceful models in the air that I changed my spectator badge for a flyer badge and spent the next three hours trying not to damage any of Brian Bakers models beyond repair.
When, soon after I heard that 'Roger and his gang' were going to the indoor nationals and realising Lionel would not be with them this year, I immediately put my peg on the vacant slot and laid claim to the co-pilots seat.
On the big day, I duly presented myself at Catesby house on the dot of the appointed 08:20, in my mind looking resplendent with my Marks & Spencer green and white plastic bag holding my pristine electric powered Hangar Rat. ( I never said I was a purist ) Roger, upon spotting what I now realise was a less than practical mode of indoor model transport, advised that it would be unwise of me to put it in the back of the car alongside his model box ( actually more like a P&O cabin trunk ) and suggested I carry it on my knee until Merv and Vince had stowed their boxes when we could look for somewhere safe to put my M&S bag. ( I think he really wanted to hide it )
So, ready for the off, into first gear - CRACK - who would have thought that first gear of an Audi was so far over towards the passenger seat? Cautiously peeping into the bag I saw that I now had two (smaller) wings and a detachable tail-plane. Luckily I also had some glue.
We arrive a few minutes later at our first pick-up, Merv's house and Roger goes up and knocks on the door. Then rings the bell. Then knocks on the door again, rings the bell again then peers through the front window before returning to the car mumbling something about people being 'inconsiderate' and it would be the last time he volunteered to be chauffeur.
Relenting a little (he must be softening as he gets older) Roger said he would give it one more try and if there was still no answer "we would be off". Knock Knock ... ring ring ..... then clearly in frustration BANG BANG. Still no sign of movement, so back to the car (mumble mumble), start the engine, look in mirror before pulling out, but wait ...... "isn't that Merv waving to us from down the street?" ...... "Ooops - Merv, get in quick before they find their dressing gowns and shotgun shells" - and off we zoom to pick up Vince - who thankfully had the presence of mind to live where roger thought he should live.
Now, with all on board we are on the motorway and proceeding Northwards to Nottingham at a sedate (in Rogers opinion) 85mph. That is until two Volkswagens had the audacity to pass an Audi and off we went at a rate considerably faster than Rogers 'sedate' 85mph for our white-knuckle experience of the day.
Arriving at the event a lot earlier (and some pounds lighter) than we expected, we proceeded to set up our tables in the 'also ran's' flying room and I could not wait to show off my electric powered conversion.
Out it came, glued it back together, a cautious 20 second charge, closed my eyes and let it go. To my surprise (and I think everyone else's) it flew quite well, but in very tight 10ft diameter circles until it ran out of juice and then flew in much wider and more pleasing circles until it made a graceful and perfect landing.
Back at the table, Merv advised me that my problem was that I had insufficient engine side thrust on the motor. As I had fixed it in position really well, all I could think of to alleviate the problem there and then was to add some rudder to increase the diameter of the powered circle.
Right idea! wrong application, as I gave too much rudder and the resultant circle was so wide it flew under full power - SPLAT - straight into the wall, which proved much more resilient than my Hangar Rat.
My problems were not over yet: When I was walking back to the table with my bits and pieces - SMACK - a much heavier-than-air CO² powered 'thingy' traveling at what must have been close to mach 1 smacked me straight between the eyes (really). Sufficient to draw a considerable flow of blood and concerned questions as to what had happened when I staggered back to the gang.
However, as is often the case, some good did come out of it as it enabled me to elevate my status in this august aero-modelling fraternity by announcing, to anyone that even looked in my direction, that I had received my injury through "walking into a rotating aircraft propeller!"
Undeterred at the loss of my one flying object and being aware Carolyn had given me my weeks 'spendo' before leaving home, I hot footed it to the trade counter. (now resplendent in my impressive kamikaze style blood stained headscarf) to see what RTF (as opposed to ARTF) models they had.
Here I received my first admonishment of the day, when a woman (I think it woman as it was wearing a skirt) behind the counter pounced on me when I opened a box containing an ICARA Butterfly to see which of the various colours it was, saying I should not open the boxes of this model as I could damage then by doing so - I guess there was some sort of message that went right over my head. Anyway undeterred I blew all but 5 pence of my 'spendo' (which hasn't increased since 1967), dashed back to the flying room eager to get back in the air and spent the requisite 2 minutes putting it together.
Learning from my earlier mistake, I decided to test fly it first without power, which proved to be a wise choice as it was clearly tail heavy, having not pushed the tail boom far enough into the small plastic tube. Simple to correct, just push the adjustable 1/16" square balsa tail boom in a little and -SNAP- I had broken the b---y thing. Believe me, I can tell you that these indoor flying jobbies are nowhere near as resilient as your 60 powered glass and foam pattern ships. Whilst I am waiting for the glue to dry, I decide I would walk to the other end of the room to where the NMAC 'elite' were ensconced, to watch Brian Baker flying his Junior 60 and Spook. (with wheels - Bill) What a pleasure to watch such beauty (sorry Brian I was referring to the models) and admire the modelling skills required to create them - I stood there for several minutes in envy and truly mesmerised.
Whilst down at that end of the hall, I looked up in amazement to see a 12" wingspan, rubber powered Cessna looking 'foamie' towing behind it a realistic looking glider on a gossamer thin 1-metre towline. This sight became even more wondrous as, when the tugs rubber motor ran down the glider overhauled the tug and slipped the towline, resulting in the two aircraft circling gently and independently back to terra firma to make two perfect landings. Just as I was getting over this, up goes a rubber powered helicopter. Yes a rubber powered helicopter that circled the room, with it's tail boom straight behind it all the time. When it ran out of power it landed as gentle and natural as can be. I am sorry, I cannot tell you how the owner engineered this feat because just as I was going to have a look up goes an immaculate 6" wingspan scale P51 Mustang, later being informed it weighed only 3 grams, that flew around the room perfectly and so fast it was difficult to keep up with it. But fascinatingly, when it ran out of power it slowed and remained stable enough to make a gentle and perfect landing.
And there's more. Being not too far from the Nationals room I popped in just in time to see the pylon racing. Yes rubber powered free flight models in a pylon race. Zooming around 4 tethered balloons, stood right on their wingtips describing 20ft diameter circles, before flattening out on loss of power to make perfect landings. Only to be grabbed by the two man team, rewound and thrown into the air again and again. And we think we can trim aircraft.
Anyway, enough of 'the truly gifted' and back to the more mundane reality of the rest of us.
When I was watching Brian fly one of his creations, I noticed a 'winder' on his table was a 15:1 ratio, when ours (ok Rogers) was only 5:1. So I grabbed my re-glued Butterfly and sneaked a wind only to receive my second admonishment of the day, this time from Mr Groves. It would appear I was turning the (his) winders handle too fast and as a result I would wear it out. So duly admonished back I went to our 5:1'er.
With the C of G now sorted out, I gave the Butterfly prop 200 turns, let it go and off it went in a very gentle spiral using all the width of the room, right up to the rafters. Just before it went 'a rafter too far' the motor exhausted and it spiraled down just as gently to make a perfect and safe landing - pure joy. But not for long. Before I could retrieve it a big-footed Goon who was walking backwards admiring his model fly, stepped back right onto it and -CRUNCH- for the third time that day, and now I was out of models.
However, Roger saved the day and me having to ask Steve Jones, my private banker, if I could (again) borrow some money to buy something to fly, by just at that moment declaring it was time to head off home which was fortunately passed without further incident.
Do you believe that? - "No I don't believe that" I hear you shout - and you are absolutely right.
Dear old Roger loads the car, with the remains of my Hangar Rat in the proverbial 'safe place' only to hear yet one final -CRUCH- as his P&O size cabin trunk tipped over when we took the first bend, ensuring that I returned home with more pieces of Hangar Rat than I had when I first opened the box.
So all in all an eventful day and on spite of my little problems and mishaps, one I would not have missed for the world. If you have not yet had a go at this indoor flying side of our hobby I warn you to think long and hard before you do. It may prove to be 'Addictive and Hazardous to your health'
PS
I trust you will be pleased to hear that the Hangar Rat & Butterfly are now restored to their former glory and are hanging on my workshop wall (out of harms way) - alongside two new creations, ready and waiting my next sojourn into the fascinating and captivating world of indoor model flying.
Article by John Kent of Bumpy Green Model Aerodrome
With the permission of John Fairs of Northampton Model Aero Club
October 2002
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