Richard Ashworth
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Posts posted by Richard Ashworth
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Hi all.
A colleagues plane recently hit the ground at the end of an ‘unable to stop it’ spin.
All components work independently afterwards but the fuz and battery were total write offs. The motor was still running when it hit which seems to rule out Signal loss, as a failsafe check had been done pre flight. The flying control positions on recovery were left aileron up, right down, rudder hard left, elevator full up. We cannot say how much of this was movement on impact.
The aircraft was a 7lb low wing sport aircraft 5S powered and being thrown about in a brisk sport mode, in no way 3D. Both ailerons, elevator and rudder had Hitec HS322 servos on the powered through the receiver at 5v via a SBEC.
My questions (at last) are, at 3kg/cm were the servos, mainly the rudder servo, man enough for the job? Could an ‘overload’ on a servo (rudder) have occurred in the spin and prevented an exit by overpowering it , but not be apparent afterwards? Is there a general rule of thumb re flying mode, model weight, servo power?
I have not been in rc long but have used HS325s in 4lb planes and HS5485s in 6lb planes.
Advice welcome.
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Daniel.
I have sent you a private message with a few detailed comments on the build should you go for it.
Apologies if I am teaching you to suck eggs on leccy conversions but the suggestions are simple and worked for me.
Richard
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Sorry to disappoint Bruce, just an aircraft recognition nut!
An anorak would have known that the yellow chopper (standard layman term) is an Airbus Helicopters EC145
(operated by Babcock Scandinavian - but had to look that up!)
Cheers Richard
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The only item not used was the supplied hinges. Two part, metal pin joined. I was not confident in getting then in firm enough without gluing at least one solid so it was polyester / CA for the ailerons and fin and pinned 25mm Mylar for the elevator. Completed 13th June - maiden 15 June. Smooth as silk with reduced starting throws and glides like a sailplane power off!. 3548 Thumper motor, 60A esc, 11x8 leccy prop and 4cell 3000 battery (10 mins flight 50% left, must try harder).
Geoff - I am not sure how an i/c version could be sweeter! (And thanks for the warning on the fuz!)
Edited By Richard Ashworth on 17/07/2019 22:14:46
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Covering done, HK film, all put together and debut photos done!
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A bit jumbled as we had a weeks hol and on resuming forgot to take as many pics!
Cover and hatch in progress for the top of the wing.
More shaping and sanding done, rear end glued. Ailerons rudder and elevator held on with masking tape.
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Hi Daniel
I have to say it was a 50/50 decision between buying a jig or “risking it”! The “risking it” won as storage of the jig would have been a problem afterwards and I did a more difficult fuz ok sans jig last year.
I spent time on getting the central formers and servo tray in and square and checking that the rears of both fuz sides met both in length and horizontally. I also used a long steel rule as a check.
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Leading and trailing edge balsa added then wing sheeting done. Good time for another “trial”
Not sure what its going to look like finished, a bit like a “duck”!
Davids plane, Permagrit block, fine sandpaper and the first HUGE pile of shavings - one cheek piece done!
More to throw away than keep.
Second one done and have to say improves the rear!
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Using the plan and the good old set square the the wings quickly went together, Lower hardwood spar glued to ply strip, ribs glued in not forgetting servo boxes, and using the false leading edge as a check, then upper hardwood spar added and done!
R
Edited By Richard Ashworth on 17/07/2019 20:45:15
Edited By Richard Ashworth on 17/07/2019 20:45:47
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Control run snakes in, rear decking to do and thinking of wings already!
Main spars and ribs. I wasn’t sure about the amount of cut out at the front and rear of the ribs but with a front D box and rear cap strips on I have found them to be very sturdy.
Decking on and front hatch made and shaped you just have to see what its going to look like with cowl fin and tailplane don’t you?
Edited By Richard Ashworth on 17/07/2019 20:36:51
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The ply fuz sides give a good idea of quality of cut.
Balsa doublers attached, a few formers and
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The good thing with having a May birthday is that its a good excuse to buy another plane kit to build and its warm enough in the garage to build it.
After a few months of reading up on the net and pondering if it would take my flying skills forward early May the SLEC Electric FUNFLY was purchased.
On delivery the box was opened to”check for damage” and take out the build instructions for a sneaky pre birthday read and put together a motor, esc, servos and any other goodies I fancied shopping list.
The contents of the box were well packed with everything neat and tidy and the included hardware and small parts neatly wrapped in sealed poly bags.
The plastic cowl had a small rip / crease in the top but only effecting the area that would be cut away when the excess was cut away for fitting.
One day after birthday, build began with identifying and cleaning off fuz parts as very well documented and described in the build instructions. A plan is provided for the wing but all other parts are “build - stuck together as per the detailed written instructions cross referenced to a book of pictures.
Excellent wood selection, very accurate laser and cnc cutting made the build easy with other than the standard sanding of laser cut parts a fairly painless experience.
Aliphatic and epoxy were the glues of choice and with parts being interlocking, a flat work surface and a set square things progressed quickly.
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In order
Kamov KA 27 anti submarine helicopters
Ilyushin IL 20 maritime reconnaissance turboprop
Ilyushin IL76 freighter in early warning radar mode with Sukhoi SU30 fighters
Tupolev TU114 Bear, long range bomber, that likes spooking the RAF north of the UK.
Richard
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This years flat pack addition.
SLEC FunFly - excellent wood selection, laser and cnc cutting, comprehensive accessories.
Motor and Esc installed Saturday, maiden Monday 5 flights. With full throws it’s going to be “fun,”
Edited By Richard Ashworth on 16/07/2019 21:13:37
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MRI and Biopsy. When I went for the prostate MRI at Leeds I was told that 50% or MRI scans were ‘inconclusive’ and needed a biopsy follow up. That was only a year ago and they recently said they were trialing a new MRI test, things keep changing and improving.
The MRI is less invasive so was the first choice course of action.
Glad that this thread is demystifying the prostate, over 60, make sure you are getting a regular PSA blood test!
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Give it the big one.
Don’t mess around tapping it with little hammers, hit it with the big hammer!
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Easy to find on U Tube
search - Renaissance Mass build.
One smooth flight! Looks really good.
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Another vote for Get Tested!
I have had two “scares”.
In 2015 I started getting tested after a urine infection and a slightly raised PSA blood test. Multipoint biopsy (sounds worse than it is, I couldn’t class it even as uncomfortable!) clear, and eventually PSA dropped back to “normal”.
2018 PSA again tested raised. Leeds this time did a MRI scan (considered in some cases a more effective test) and advised enlarged prostate but nothing of concern on the scan which at 66 suggests unlikely to have problems in future, higher PSA level not unexpected due to enlargement. Also PSA level varies day to day.
If there is a problem best caught and treated as early as possible, better to know rather than bury the head in the sand.
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We have a nominated safety officer but have three distinct groups within the club, midweek, Saturday and Sunday fliers. In the absence of a safety officer for each group we have elected to emphasise that safety is the responsibility of each member and we are encouraged that if we see anything we think is wrong, do something!
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The 60s. All those who participated then are still participating now but in stead of balsa, tissue, dope and rubber or tow line ( 049 powered free flight or control line if you could afford it) we now are flying computer TX multi channel RC. Plus we have the time to do it seven days a week. Without the 60s how many would be flying now?
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For those building the Renaissance in case you have not spotted it, Sarik are doing a BMFA promotion on Short Kits, advertised on page 8 of the latest BMFA mag. Offer runs until the end of Feb.
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Hi TP
I and two colleagues, all A level flyers, are looking to improve our flying by practicing flying each of the manouvers in the Clubman schedule on the GBRCAA Site. Once we have got one sorted we try adding it into a mini schedule, better than a random approach. I think that the ribbon is fairly easy to follow.
We had hoped to get further this year, but the weather intervened! Roll on summer 2019.
Hope this helps
Edited By Richard Ashworth on 08/12/2018 21:17:48
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I have reached the point where I have now done my own last two maidens.
ARTF Wot4 - a doddle, been flying a foamie for years, Kit Galaxy Hornet - total panic for two circuits then managed to put it down softly. Lot of aileron trim needed.
It's next flight was in the hands of one of the club 3Ders who sorted the trims and gave it a good workout.
The satisfaction of seeing it fly well was immense. When this windy period ends I will have a go again myself.
Real planes are first flown by test pilots, why not models?
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Yet another vote for Titebond aliphatic, general work inc wing bandage. ( cleans off easily)
Epoxy, 15 minute, for formers, and high stress areas ( bottle of meths and cloth to clean off fingers)
Thin CA for complex tight fitting sections (debonder spray ready for when it gets the fingers)
Servo Torque guide - Sport Flying (electric)
in Hints and Tips
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Thanks Martin.
My colleague is an ex light plane CFI and 737 captain and his first actions were as suggested. The problem is that nothing he did worked and we are working through why he couldn’t get a recovery. We are aware that the surfaces were more or less as he put them to, intentionally, at a safe height, to put the plane into the spin, left hand direction.
I was trying to get discussion focussed on were the servos man enough without a discussion on the plane he was flying but for information it was a Ripmax ARTF Acro Wot, rip!
Edited By Richard Ashworth on 28/07/2019 19:08:34
Edited By Richard Ashworth on 28/07/2019 19:09:24