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Jonathan M

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Jonathan M last won the day on February 23

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  1. Meanwhile... at the pure FF diesel end of things, I recently finished my 23.5" Gordon Whitehead Nieuport Baby, built from an original 1972 Aeromodeller plan. It was supposed to be powered by a 1959 E.D. Baby 0.46cc which I acquired completely gummed up, but stripping and cleaning it then putting it back together revealed an engine that had actually had very little prior use: I've now run it in properly (the exhaust residue has gone from dark-grey to light-straw probably for the first time in over 60 years!) and it is very sweet upright. However, for reasons I've not been able to fathom, it has proved almost impossible to start inverted. So I've now retrofitted an equally old but invertible Allbon Dart 0.5cc into the Nieuport. First flights were impressively high and sometimes manic, as the old Dart is still a bit too powerful. So this video of the last trim flight of the day, with the 7x3 prop mounted on backwards to help kill the excess thrust (even at lower, burbling revs) shows the model closer to an acceptable state of trim: https://photos.app.goo.gl/VaV26H5e5pqUfFiC9 The glide is steep because (1) it is obviously a very draggy WW1 biplane, (2) it is a bit heavy for its small size, and (3) I had to bend in down-elevator trim to overcome the previous ballooning climb. I've now fitted an 8x3 prop, as the 'flywheel effect' of this larger prop better helps keep the engine running at lower compression settings, and I'll also increase the down-thrust from 7° to 8° and the right-thrust from 4.5° to 5.5° to tame the excessive bank and climb at anything above minimal revs (sounds mad but in my experience this type of very short-nosed FF model really needs that much of both!). Then I'll be able to restore the tad of down-elevator trim to neutral to improve the glide-phase angle, bend in more left rudder and re-tweak the already bent-in differential washout... the aim being to achieve a consistent left-hand circuit on both power and glide phases (it currently turns right once the power cuts) without the model rolling in one way or the other, etc. Complicated stuff this FF malarkey...
  2. Hi Mike - just seen this. The CB is on hold for building this coming autumn/winter. (Since finishing the Gangster, I've been focussed on building a couple of trad FF diesel models - a Veron Cardinal and Gordon Whitehead's all-sheet Nieuport Baby - as well as flying RC thermal and indoor FF scale.) Your observations about wood densities and model stiffness are spot on. Jon
  3. Steve C - The two 2m size is very handy and capable and still visible at several hundred meters (just!), only limitations of a light airframe with a fixed camber wing are ambient wind-speeds, which limit one to 10-12mph max. I don't know what RES models are available in 2.5-3m sizes, but if you want to go balsa and film (rather than foam or moulded) and are happy with full-house then have a look at the 2.5m FXj from Austria (two versions, pure glider and electric-launch) FXj 2.5m kit and video here FXj 2.5m electric Steve EB - how's the X-RES getting on? Jon
  4. Steve, if you go for something in the 2m F5-RES class, then you'll find it a complete revelation compared to larger heavier models - typically a third of the weight of your Solius and much more efficient - and you'll also be eligible to enter the growing FxRES competitions if you're inclined. Here's a friend of mine expertly flying his bungee-launched version https://youtu.be/Nm_fASOpz74 That's an X-RES in the F3L class (previously known as F3-RES) and weighs about 430g or so, an electric version for F5-RES (typically using something like a 3s 450mAh) should still come in below 500g. See https://www.hyperflight.co.uk/products.asp?cat=RC+Models&subcat=F3-RES+Thermal+Gliders for the usual range from Hyperflight. I fly a PuRES off the bungee (photo below in last Sunday's first comp of the year), and have an X-RES electric conversion in the pipeline. See also https://www.fxres.co.uk/ Jon
  5. I maidened my FF Cardinal yesterday. A bit breezy so got in a lot of model-recovery exercise over half a dozen flights, but hugely satisfying! ? https://photos.app.goo.gl/KzYKm5ktiVnEdv4L6
  6. Fair enough Matt. For some reason I'm feeling a bit tired and distracted at the moment. But given the nature of the (online) world we now all live in its worth looking up Poe's Law...
  7. I'm lost for words reading this. The entire world is incredibly nervous about "sudden" extremely destabilising events in Eastern Europe (think August 1914, September 1939, August 1945, the 1961 Cuban Missile Crisis, Pol Pot, Mao Tse Tung, Adi Amin, Osama Bin Laden, Super Covid, the Spanish Flu, the Black Death, and the extinction of the dinosaurs 60 million years ago all combined into one very nasty "terminal" possibility), and you think an RAF Station Commander is just looking for excuses to stop a bunch of British children in adult bodies having fun with their pretend aeroplanes this summer.
  8. Original Veron Cardinal kit, covered with Litespan, powered by a late (yellow head) DC Dart... all 100% proper FF.
  9. Cheers Andy - I've already joined and have put the various event dates in my diary.
  10. Hi Steve - just seen this. I've got a PDF of the plan and article from PM. Would be helpful though to know where I can get a printed copy and cut parts as well. Cheers Jon
  11. Practicing for my B Certificate has given me something to aim for, has improved my flying skills considerably so far, and has impelled me to build a suitable model for the task - all for the pure personal pleasure and challenge of it rather than because its a prerequisite for anything else. Having said that, it has also got me interested in flying classic aerobatics, for which there are half a dozen UKCAA events scheduled for this summer...
  12. Yes, me. I have a good ASP 70 FS from new that briefly powered my ARTF Acrowot, i.e. VGC. PM me if you're interested.
  13. That's beginning to look nicely rhapsodic! ?
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