Wednesday 23 December 2015

163 January 2015

 RansMail #163 
January 2015
 
Picture from Ken Manley.
 
The Rans S20 'Raven'
The Rans S20 'Raven' designed by Randy Schlitter became available from 2013, it's a faster more rugged side by side seating development of the Rans Coyote II S-6S, using S7 type wings & empennage. Cruising at 112 mph the VNE limit (130 mph in the USA) is the same as their S6 family but at a higher max. AUW of 1320 lb.; 740 lb. empty,\load capacity 580 lb. Larger baggage space is e.g. for camping gear/folding bikes & totals 21 cu. ft. with similar 80 lb. load.  
[The lighter constructed S6 weighs 675lb. can carry a hefty 645 lb. The current Rans S-6ES Sport Wing combines S6-116 performance with 9:1 glide & 100 mph cruise using Rotax 9 of 80 hp.] In the real World, my 1999 Rans S6-116 is a true 584 lb. empty & limited by UK CAA/LAA AUW of 1100 lb. still means an impressive 516 lb. load pax + fuel and @ GPS 100 mph consumes ~15 litres/hour, ~30 mpg. Completed Rans S20 kit builds are accumulating in the USA (see Google) & 'RTF' planes are planned. It needs a minimum of 100 h.p., e.g. Rotax 912 series; or the UL 130 hp engine.
 
New Reader this month:
Colin Fretwell.
 
Dave Wise re Schaffen-Diest Old-timers fly-in 2014, Belgium
Is regularly accompanied by a big vintage car and caravan rally - BMW 600 four-seater with a suitably small sleeper trailer.
 
Tim Engel. Carb Leaning bigger engines, Vans info.(Jabiru forum 201214)
http://buy-ei.com/wp-content/uploads/2013/06/Pilots-Manual.pdf

2015 Fly-Ins, Stow Maries Essex WWI aerodrome (from their 'Flambards Flyer')  www.stowmaries.org.uk
9th and 10th May, Saturday 27th June Armed Forces Day, 5th and 6th September. Flying information Aerodrome Operations Manager Russell Savory russell@stowmaries.com
 
Farnborough International Airshow 2014 featured two Rans S6 aircraft
Vince, Rans S4, sent me the DVD for Christmas.  Two Rans S6 demonstrated in the middle of the  UK 'Farnborough', Yellow G-YTLY and blue G-SBAP, kit built a/c by two UK schools under Boeing sponsorship.
 
John Murphy. I had my first flight of 2015 last Sunday, sunny but windy above 600 feetTook off on frozen ground but after returning to my airfield a slight thaw had set in and I got stuck in a very wet patch while taxing back to the hanger. My aircraft is a 582 tricycle Rans S6 ES and the size of the tyres I have do not help on the wet grass strip. We have a Kitfox based in the hanger with large tyres which seems to cope better than my small tyres.  As larger tyres or can be fitted to the tail dragger variant of the Rans, I'm in the market for a Rans microlight tail dragger with a 912 fitted. Any offers suggestions please,  john.murphy63@ntlworld.com
I may consider a cheap taildragger airframe and restore it with possibly fitting the new D-Motor. I spoke to the guys from TLAC at Telford who had one in their Sherwood Ranger.
 
Tundra Tyres fitted to Rans S6-116 & progressed to flight.
Spent two hours on the bench trying to remove the old 4.00 x 6 tyres with tyre levers, vice and G clamps & only got one bead out of four to move 1/2 mm - . Split Ali rims don't help at this phase of the task & I gave up. Elite Motors tyre bay were obliging enough to have a go for me with their bead breaker, NBG. All three experienced tyre fitters shook their heads & moved onto attack using bigger levers, finally 3/4 hour later with my combined effort pushing & with much surprise at how almost impossible it was they were free.
Thereafter putting on the 'Carlisle' 8.00 X 6" tyres & tubes was straightforward, everything went together nicely- with lots of talc to ease the inner tube - & a final 12 psi inflation. Next day slid both onto the stub axles ready to fly. The 'plane now sits about 2" taller at the cabin, but being tail-wheel that's all.  
Christmas Eve, was bright with a steadier wind. Pulled her out, started and taxied up the strip using the firmer parts: 2 stages of flap, vital checks then full power with stick kept  back for a tail down take-off. No sudden slowing down this time over the softer sections and she quickly left the ground. At 5,000 rpm for a local excursion where ASI and GPS showed and on the face of it the bulkier tyres haven't made a big difference to her speed, managing about 100 true mph, nor any handling changes.
Returning & with the wind behind me yielded 116 mph over the ground and with power reduction nicely lined up on short final for 03. Below 75mph, progressive 1st, 2nd and full flap allowed a safe 60 mph to at the threshold where handfuls of throttle allow excellent control to select the best touch down point.. Still the usual amount of mud splatter to wash off the wings and tail. Walking the field after, the main wheels hardly marked the grass & even the tail wheel hadn't broken the sod. So a good result all round and a mod. well worth doing.
My thanks to Brian for providing the inspiration, Clive for supportive information,Barry for airworthiness guidance & to S6-116 Rans designer Randy Schlitter.
 
Anti Black Mould on Rans fabric.  http://www.wetandforget.co.uk/ 
£32 for 5 litres delivered the "Wet n Forget" anti black mould stuff I obtained as per Dec.RM -   was last Wednesday at a 3:1 mix  hand squeeze sprayed with an ex kitchen surface cleaner dispenser. As noted on BMAA forum it worked& has to be worth a try, the caveat is, it takes quite a few weeks. Watch this space !
 
Update on Rotax 912 ignition failures (which they don't acknowledge) An alternative repair route. (Adrian Lloyd BMAA forum 12th Jan).
Had my two 'Ducati' modules go dead after a 5 week lay-off following last flight. To cut a long story short, much research and wincing at the cost of new units, I found a company called Carmo Electronics in the Netherlands http://www.carmo.nl/index.php?main_page=index&cPath=497_624 who repair said units. I decided to take the plunge and sent them off. They arrived at Carmo on a Friday morning and  the following Wednesday they arrived back - that's customer service with a vengeance!
Refitted they work perfectly and have been for some months now. On asking what the problem was, they said that there were a number of poor quality components that had become defective and they were replaced them with higher quality ones. The units had been cut into but the re-potting was of excellent quality. How they achieved the repair amazes me, but at £160 odd per unit I'm certainly not complaining - 1st class I think. So, if anyone else has problems I thoroughly recommend Carmo Electronics.
 
Australia's CASA re Jabiru power, late December 2014.    
http://casa.gov.au/SCRIPTS/NC.DLL?WCMS:STANDARD::pc=PC_102352  "THERE IS AN ABNORMAL RISK THE ENGINE IN THE AIRCRAFT WILL MALFUNCTION."
It requires operators to take precautions and ensure full users/pax awareness of the risks from engine failure. It might now be that the Australian CAA have themselves taken the subject up with Jabiru after years of their apparently not attending to users' reports of serious engine problems. It's a disturbing story on the Jab. forum for over ten years: perhaps they will now have the incentive to address the failures and be more communicative.
That's not to say all other light a/c engine makers have trouble free products but Jabiru's outwardly attractive  a 'simple' aero engine concept of over 20 years ago has never been fully sorted.
 
Stuart Ord sent a note of this link to CASA  re. Jabiru Engines.
 
Shortly followed by this....an Unwanted Adventure (by Clive Innocent, Reality Escapade, Jabiru 2200A. 85hp (solid lifter).  Serial no: 1920.  Total hours from new :- 423.
As some of you will know, my  flight to Popham, Sunday 28th Dec. didn't go quite according to plan. I arrived O.K. and enjoyed lunch with Dave Baker and Brian Searle, it was quite busy and  had a good atmosphere.
When time to return home, I jumped in my Escapade, warmed the engine to running temperature and took off home for Hadfold Farm. The sky was clear blue and I settled down after leaving the circuit to cruise at 2,200ft. Shortly after passing Lasham there was a metallic 'bang' and propeller thrust died. Instinct was to apply carb heat in case it was severe icing, but in truth I knew it was mechanical. The Sun was low & it was getting cold. Looking below for a suitable field to aim for & only an hour and a half to go before Winter darkness fell, I dreaded being stuck alone in a field. Nursing the engine by throttling back- at the same time looking urgently for a field & monitoring the altimeter and ASI - I saw she was only sinking a couple of hundred feet per minute. But now the engine was dying & my a/c began to show increased rate of descent. Backing off still more throttle and using best glide speed I looked at my GPS to see if I could reach Colemore Common airstrip now 4 miles off, hoping by nursing the engine I could squeeze a last blast if needed on the approach. Low bright sunlight in front made seeing ahead difficult, but helped by the GPS I could  still navigate there. Now, having done all I could - it was time for a 'Mayday' call on 121.500 - in case I was less than successful landing. They were still asking for confirmation of my intentions for Colemore and it's location when on short final. That last burst of power wasn't required thanks to sufficient height remaining, dealt with using full flap and a little side slip. Over the threshold at about 30 feet, and a lovely three point landing a third of the way up the strip.
Phew ! Down without breaking anything, what a result. Boy was I glad Colemore was there !  Just after I landing, Dave made a low fly-by to check all was O.K.  Richard and Rosemary at the farm were very kind, and he drove me back to Hadfold. Next day with Tim G-P's help and John Littler's trailer we retrieved folding wing 'Paddy'. Removing the engine cowling instantly indicated that my Jabiru motor was a write-off ! An exhaust  valve had lost its head, been hit by the piston & bent the con rod, which subsequently tried to punch a hole through the top of the crank case. Oil is all over the place, except inside the engine !
Bent Con. Rod and little left of the piston.
Crankcase bent from within by thrashing components.
Battered Cylinder Head and headless exhaust valve stem just visible.
 
Though Clive meticulously maintained his Jabiru 2200 solid lifter engine to the book it was no protection. Digging since then he discovered this less publicised 'Achilles Heel' has caught out other USA & UK owners. He refuses to trust another & is actively acquiring a good Rotax 912 to install in its place.
 
Camshaft Failures (Steve, Jab forum, January '15)
I have experience with three 3300 engines on my Zenith Zodiac XL over a total of 1,575 hours. All with the same Sensenich carbon fiber propeller set at the same pitch for most of the hours. 
I put 905 hours on Jabiru SN 1256 (RIP: lifter failure, camshaft failure, heavy case fretting). And 640 hours - Jabiru SN 2340 (RIP: camshaft failure, minor case fretting).
 
CAMIT ( camitaeroengines.myshopify.com ) Queensland, Australia.Are totally independent & selling replacement/uprating components through to better parts and whole re-engineered engines which will fit straight onto the same mount as the Jab.
 
Don Lord (Rans S6-116) in the mud when departing Swanborough Farm.
I managed to turn the tables and got sympathy and help from Clive when stuck in the mud at Swanborough to complete my move to Heathfield. Clive kindly came down with his Landrover and got me out - so that's a happy ending for me.

Building a Rans Coyote II in 9 minutes, Dave Rigotti (RansFlyer forum)
Coyote Build Short https: https://www.youtube.com/watch?v=C1Iua_iDOes Time lapse video taken over the 17 months actual build time & special thanks to Lee Wiegman.
 
David North's Jodel (forum Dec '14)
One piece hollow Wing Spar & Fuselage. After 2 1/2 years, I have the Fuselage done except the turtle deck, The spar and ribs, and the empennage. Basically, most of the woodwork. I spent the last few weeks working on the trim tabs which are metal,  improving my brazing and welding skills. But there is still so much further to go.
 
 
 
Old RansMails are now on line courtesy Peter Greenrod. https://dl.dropbox.com/u/4702449/Ransmails.pdf
Collected Rans S4 & S5 Tips      http://ranss4s5tips.blogspot.co.uk/
Rotax practical owner help    http://www.rotax-owner.com/rotax-forum/index
Rans Aircraft USA site   http://www.rans.com/aircraft/home.html
 
Big visitor to Sepentine field W Australia. (Chris Tansell SABC Editor)
We host an Ericsson Sky Crane every year as a fire-fighting tool.  We get some horrendous fires here from time-to-time.
 
End  December - local drama as loaded Virgin Jumbo u/c failed & it lands back at Gatwick.
When on departure for the USA one of its four main u/c legs jammed up, it was successfully landed here with nearly 500 souls on board after a very hard touch down. A plaudit for Boeing that it is engineered to be capable, with care, of landing with any two of four u/c's deployed. The pilot following standard procedure, cross flowed fuel to lighten one side & load the 'good' wing as ballast before eventually coming in. If no. 4 hydraulic system became inop. it explains the whole scenario, assuming the Wing gears are on that system (the body gears would be on another) when they would be relying on gravity drop, which has been known to fail. But the right wing gear likely hung up on the door, or the mechanical lock failed to hold the truck in the angled position (normally held there by a hydraulic actuator) so the truck may have fouled the doors or wheel well during the attempted deployment. It helps explain the "arrival" as he might have banged it down to try to get the gear to lock out, or he was caught out by the differences from a normal landing. As surmised one of the split elevators would also be inop., so reduced authority in the flare and very limited spoiler deployment to stop the bounce, whilst the speed brake function is disabled to inhibit spoilers deploying to cause unwanted pitch-up.
Lastly P1 could have banged it down early to take account of the reduced braking i.e.4 less wheels on the ground and having to correct for asymmetrics. We think the crew did a blindingly grand job.

Trevor Sexton writes:- Various people from Motor Sport have raised an e-petition.
HMGovernment has approved it to protect the motorsport industry in the UK.
It introduces a mandatory noise complaint waiver for anyone who buys or rents a property close to motorsport venue. The petition states: “There are innumerable cases of people knowingly moving within close proximity of motorsport venues, only to try to have their planning permission revoked or have them closed completely when they take exception to the noise. It is extremely detrimental to the UK’s motorsport heritage, when all the motorsport venues start disappearing. Motorsport and the associated mechanical/engineering business is a key British export and second to none in the world of motorsports. As such, anyone who wishes to buy or rent a property within a determined distance of a motorsport venue should have to read and sign legislature that waives their right to complain about the noise from the nearby venue. If they do not wish to be bothered by something that was a fixture of the community long before they arrived, they should not move there in the first place.”
https://submissions.epetitions.direct.g ... ions/72458
Now could we combine this with Aviation and get protection for Airfields??
 
Seen in January LAA 'Light Aviation - SD1 Minisport, a fast light single seater.
 
For Sale new, never used round RPM Aircraft Spruce instrument for a points Rotax 447 two-stroke engine. Made in the USA MicroflightProducts Division of A/c Spruce P/N TA130/1 & 10-01616. Full Sweep Tacho 12 volt neg. ground. mikehallam@btinternet dot com. or mobile 0747 886 9982.
 
UK CAA Safety Data issue Dec. 2014 http://www.caa.co.uk/SafetyDataGeneralAviationReport

 
BTW.I learnt that not everybody on the 'send' list received December's RM. Please drop me a line if you didn't get yours.
Mike
 
 

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