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john davidson 1

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john davidson 1 last won the day on July 15 2021

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  1. 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.
  2. 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 !
  3. 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!
  4. 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,
  5. They control the vortices from the tips which cause drag
  6. Or the bad news , we have amputated the wrong foot, -------- the good news is the man in the next bed wants to buy your slippers.
  7. Not flying demo for obvious reasons!
  8. 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.
  9. 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
  10. Shelf life for poxy seems to infinite
  11. Cut the fire wall off and extend the tank bay to make a battery box, thus bringing the cg forward.
  12. 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?
  13. They will usually loop in intermediate, release at top of loop for an Immelman
  14. 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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