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Everything posted by John Lee
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Sounds like the e-flite Hyper taxi
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Cut the wire in half & solder each end into one or two concentric brass tubes?
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As GG says just follow the manual:
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https://youtu.be/FhWQBMcfV44
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There is an advertorial in this month's (March 2025) Aeromodeller where John Bristow from Deluxe Materials describes a method of using cellulose dope with coloured EZE tissue. The gist of it is to apply the tissue wet using tissue paste and then spray thinned cellulose dope using an airbrush. Once dry further coats of dope can be applied with a brush or spray with 'careful handling'.
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That may be because tab(s) fitted further outboard may tend to twist the wing, actually exacerbating the wash-in. I would expect that the structure inboard of the ailerons will be stiffer so better able to resist the twisting. It is the same effect as the phenomenon of aileron reversal where a wing has insufficient stiffness and leads to control difficulties. This reversal was more common in the early days of manned aviation but still needs to be guarded against today. Many airliners with their long floppy wings have inboard high speed ailerons as one of the measures to ensure controllability in all flight regimes.
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I would expect that there will be bespoke charges & availability for the World Championships. I too am hoping to attend.
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I have 3 twins between 3 & 10 years old. Each has the ESCs in the nacelles & I must confess I never even considered positioning them any other way. None have given a moment's bother.
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I bought mine from the 'One Hundred Percent' store on AliExpress in 2023. I've had a few items from them over the years & they lived up to their name!😀
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I have a ISDT Q8, a Toolkit M6DAC and a SkyRC D200Neo/BD380 combo all in regular use. I've had the scroll/press button on 2 previous ISDT chargers fail which prompted the change to the Toolkit & SkyRC. The ISDT Q8 is touchscreen & has been faultless. Other than that they are all much of a muchness. The Toolkit probably gets the most use mainly because of its ease of use & memory function.
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Model ID help.
John Lee replied to Roy Thompson's topic in Vintage Kits, Semi-Kits and Plan Projects
Hmmm.... It also resembles a 'canopyised' True Line Low Boy, this from a 1975 RCM&E advert. It could of course be an own design inspired by these rather generic 'Boy' models that were popular at the time. -
Model ID help.
John Lee replied to Roy Thompson's topic in Vintage Kits, Semi-Kits and Plan Projects
It has a more than passing resemblance to a Svenson Mini Boy Coincided with RichB -
LiFe packs - as safe as thought?
John Lee replied to Martin Harris - Moderator's topic in General Radio Discussion
Last year I saw a similar LiFe Rx pack that had swollen a bit more than Martin's. It was being used in an RC yacht at a local boat club and the owner asked for opinions as to whether it was OK to use. I commented at the time that I had never seen one that had swollen before but that it was relatively common with LiPos. Of course I gave suitable disposal advice. So not unknown, but rare. It made me wonder as to the exact chemistry of these packs and whether they are true LiFe's? -
It is a Ripmax Zephyr http://www.ripmax.com/Instructions/a-artf6905.pdf
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That is what comes of you being the product, not the customer. They exist to sell you to advertisers. If you want proper backup be prepared to pay.
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How would you use a reversing ESC on a fixed wing plane
John Lee replied to Nigel Heather's topic in All Things Model Flying
I'm another with a reversing ESC, this on my FunCub NG for use on water, where it is very useful. The activation switch also has a sound file attached which announces 'Reversing, beep, beep, beep' when in use, like a lot of vans/HGVs. Ostensibly it is a warning against accidental activation but it generally provokes a smile, providing it is used sparingly. -
Netamo produce a WiFi linked smoke alarm that should do the job provided it is in range of your router. Whilst I don't have their smoke alarm I do have several of their other products and they all work extremely well. https://shop.netatmo.com/en-gb/security/smoke-alarms/smoke-alarm
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No there is not. Since 2016 recreational pilots need only self declare that they meet the standards for a car driving licence, known as a Pilots Medical Declaration or PMD. An initial PMD is required that is valid up to the age of 70, thereafter you need to re-declare every 3 years. There are no tests. The move away from regular testing has been very successful and has not led to any material increased risk. The PMD system is presently under review which should further simplify and clarify the application process. To suggest more restrictions for model flyers when the CAA is moving in the opposite direction for full size flying is shameful in my opinion.
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In the latest (March 2025) edition of RCM& E David Ashby reviews the 'TOP RC Hobby' AT-6 & Sia Marchetti, 80gram scale models with gyro. David says 'the main electronics board has ports for DSM satellites and Futaba S-FHSS S=Bus receivers....'.You may want to check out the series of models as they appear to meet your needs. David goes on to say later 'We had a young lad join our club last year. He started with a mini warbird like this, a Spitfire of course, teaching himself to fly in the local park. Impressively, the little warbird had done its job so he was soon steering the club trainer around without any bother at all' Go for it!
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Yes, for tailwheel aircraft with propellors rotating in the conventional direction there are 4 forces all of which are trying to make your model turn left. 1) Torque 2) P-factor 3) Gyroscopic precession as the tail lifts 4) Spiralling slipstream affecting the fin & rudder. You need to be on the ball from the moment the model starts moving until it is, proverbially, back 'locked in the hangar'.
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How worthwhile is aileron differential?
John Lee replied to Alistair Scolley's topic in All Things Model Flying
Certainly. One of those conditions exploited by full size glider pilots in cross country flying is to fly straight & slow down in lift, thus spending more time in rising air, and speed up in sink, again reducing the time going down. If your model glider has a vario you can exploit this technique also. But and it is a very big BUT, that only works when going straight. An aircraft is always - always - more efficient when in balance and has a streamlined flow along its axis. As soon as you induce any yaw you lose efficiency in at least two ways. You have the much increased drag from dragging the fuselage, fin and rudder sideways through the air. And the airflow across the wing is flowing sideways across the chord, effectively lowering the aspect ratio & also presenting a sub optimal airfoil to the flow. So always pays to keep in balance. This is where we came in. Aileron differential is one of the tools in our locker that helps us achieve that balance. Another used in some aircraft, notably the high wing Cessna singles, is the Frise aileron. These create more drag with the up going aileron to try & match the increased drag of the down going aileron. This increased drag on both sides is still more efficient than allowing any slip and helps the lazy pilot who keeps his feet on the floor instead of the rudder pedals. Again from my study notes: But these are just aids, rudder is invariably required to optimise the flight path. Commercial aircraft use yaw dampers to this end. Unfortunately being pilots stuck on the ground we cannot see the invisible forces acting on our models but we can learn from the theory, wind tunnel experiments & full size practices. But to some extent it does not matter. It’s a hobby and what ever you do safely, if it brings a smile to your face, and satisfaction to your flying then it is fine by me. -
How worthwhile is aileron differential?
John Lee replied to Alistair Scolley's topic in All Things Model Flying
Afraid I disagree 100% Jonathan. This is one of the occasions where reality may be counter-intuitive to perception. A co-ordinated thermal turn, keeping the string straight or ball in the centre in full size terms, is the most efficient. Keeping the wing flat & trying to turn with the rudder &/or opposite rudder to the direction of ailerons produces a side-slip which is less efficient and indeed is what can be use to lose height. You really do have to do the maths (below is an extract from my studies from a few decades ago!) showing the force vectors to prove the theory, but I have practiced & taught these side slips on both full size & models and the result is clearly evident on the instruments in the full size and is also apparent in comparison tests with a model. -
Hand Launch EDF ,any tips on what to protect the underside ?
John Lee replied to flying daddy's topic in Hints and Tips
Multiplex supply a clear plastic protection sheet for a number of their models, such as this one for the Lentus. They easily stretch around the compound curves of a fuselage and provide good protection. The one I linked to is about 55cm x 7cm so should be good for 2 or 3 small EDFs, or you could search for a similar film. -
New from Multiplex - Lentus 3m Glider
John Lee replied to Steve Colman's topic in Gliders and Gliding - General Discussion
Mine is 4 years old now and has done a lot of flying. Every flight has been hand launched by myself with zero issues. It replaced a Heron (which I passed on to a Club mate & is still flying) and is very much a notch up in performance. It also benefits from a better wing attachment with a central pin fitting, shown in my photo above, and fixed green MPX plug & sockets. This makes assembly on the field a 30 second affair. The Heron has individual plug & sockets for the 4 wing servos which makes it a bit more fiddly. The Heron is still a great aircraft but I have no regrets about spending the extra on the Lentus.