john davidson 1
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john davidson 1 last won the day on July 15 2021
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My 2017 Xtrail refused to start a few weeks ago, changed the battery ( £150) , no issues, stop start began working much more so this could be used as an indicator of battery health if only you knew? Mind you my old much lamented SAAB had a voltmeter which left no doubt.
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Alternative to Blenderm Tape for Hinges
john davidson 1 replied to Edgeflyer's topic in All Things Model Flying
Reinforced sticky tape. cut into 30mm lengths two lengths stuck together to make 50 mm long ( with one reversed( ,made into figure of 8 hinges ( four hinges per surface). Easy version of sewn hinge ! -
Four cell lipos which have a duff cell cell are near enough to 12 volts so can be discharged with a bulb. I use such old lipos as a power source for LED day running lights on my old Triumph then dispose when flat. Nearly all vehicles now have these LEDs so I feel more comfortable that I can be seen by car drivers, always a worry on a bike. I once put a lipo in a bucket of water then pierced it . It boiled away for a while under water, showing how difficult to extinguish they are. Just the once!
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If I see a disposable Vape on the pavement I pick it up and dispose of it properly by separating the battery,Following the possible re-use with interest,
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They control the vortices from the tips which cause drag
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Not flying demo for obvious reasons!
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As I have said before converting to electrickery the main problem is enlarging the tank bay to fit a battery up against the motor mount , otherwise the cg is too far aft. My Christen Eagle had a wide cowl so managed to fit a battery transversely , the cg was spot on without ballast.
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Thanks Ron. Just wondering if this could be adapted to depron? Balsa veneer is stuck to foam cores with PVA , or perhaps use water based varnish . I do use vinyl from the local sign shop which makes the wing almost bomb proof but brown paper would be cheaper and also sandable and would take emulsion . Worth a try any way
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Shelf life for poxy seems to infinite
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Limbo Dancer Ken andersons old bird
john davidson 1 replied to DavyW22's topic in All Things Model Flying
Cut the fire wall off and extend the tank bay to make a battery box, thus bringing the cg forward. -
Volantex Echine and Sonik Mini Planes (Corsair ETC)
john davidson 1 replied to Zflyer's topic in All Things Model Flying
I have managed to lose three,one trying to fly the wrong plane in formation, one looped on launch into the sun and one too far away, is this a record? -
Volantex Echine and Sonik Mini Planes (Corsair ETC)
john davidson 1 replied to Zflyer's topic in All Things Model Flying
They will usually loop in intermediate, release at top of loop for an Immelman -
I have a rather jaundiced opinion about most insurance, other than essential such as house and car insurance, the companies try not to pay out if they can. Last year got a wood screw in a front tyre, too near the edge, the fitter said for a plug so bought another tyre, an all season as usual. Few weeks later, blow me, had the same in the other side so sent off for a packer of repair screws which screw in from outside. Added a touch of POR to help things and it has been 100% air tight, I have individual sensors in each wheel so can keep an eye on pressure which gives a bit peace of mind , tyres and brakes, really not best to cut corners but this fix seems a good product!
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Winter is here....who's been flying?
john davidson 1 replied to Chris Walby's topic in Flying Field Reports and Chat
Paint over the PRU blue with PRU PINK