David perry 1

Thanks guys.  The FF9 is modulised, so maybe thats worth looking at, I'd not considered that.  Tahnks.   david

2.4GHz has been around a while now, and while my FF9 is not exactly going wrong, it looks tired and I need new receivers, crystals (remember them??) etc etc.  So, IF I was to change over to the blackmagic band, is there one provider which stands out from the crowd?    I like Futaba and I understand their menu systems, so I guess staying with them would make sense. Equally, I like the look of Spekrtum (JR??), but I have never used them.   Mind you, wwith everybody else on 2.4 the peg board for 35MHz is always free!   D

You are correct re the single bladed props...I never did get to grips with the thrust / drag, static vs dynamic idea of them at all!   D

IIRC leave the pitch the same but knock an inch (actually, c 10%) off the dia.   If its leccy though, use a meter.   Dont do it for performance though will you, 3 bladers are worse than 2.  They werent used for performance reasons (unless you class not hitting the ground during rotation as performance, in which case they were!!!)   D

ha, you want acronyms? Look at the Airbus manuals.    David

Ref CGISBAGF, yes, but how wrong were we back then?   How many dicussions were held alongside the field, in the pits and in pubs on wet days, about the terrrible influx of these horrid ARTFs and the trashy undisciplined sort of modellers, and modelling, that would enter the hallowed halls of AeroModelling?   Boy were we wrong.  The stuff was tatty at the beginning, but now? What would we do woithout it. And the quality of the modellers? Bit arrogant weren't we?   My only gripe about RTF / ARTF is that the species has been plagued by the virus known as Edg E5 40 and clones.   D

ROG = rise of ground, ROW...ditto, water!   Anyone old enough to recall...DEACs? Aghhhh!!!!!!   D

The Britflight Arrow   david

How fast are you lifting the tail? Forgive me if I'm teaching you the bleedin obvious but: hold UP elevator as she starts to roll, then let it slowly go to neutral befor finally pusshign the elevator DOWN to rotate prior to pulling UP again the unstick.   If you are trying to do all this too fast you MIGHT be getting these faults.   Its worth experimenting with techniques. D

Thanks!   D

What does BNF and PNP mean when applied to foamiesetc?   I stop reading the mags for a few months and new acronyms creep in!!   Build n fly? Plug n Play?    I understand RTF, but these new 'uns...     David

The best for me must be two best ones actually: the Galaxy FoxJet and clones, simply absolutley superb fun, and the Super 60...ahhhhhh Unbeatable.  I have made dozens of each and love every one.   The worst was another Galaxy Models offering, the name of which escapes me now, but it was a sort of Piper Warrior lookalike and it was simply awful!  The model dated from about 1987 ish and is no longer made!   david

The reason that full size aircraft have their props going the way they do (top blades towards the fuz) is because the net effect of the propeller is to throw the thrust line towards the fuselage (opposite rotation would have the opposite effect).  This is important because if an engine fails then thrust line position is what makes it easy or hard to control the sudden yaw.  Imagine an engine set out on the wing somewhere, and the yaw forces involved. Now imagine that same engine sat on the centre line (as in a "single"), there are few yaw forces to contend with.     The big powerful WW2 twins were a real problem because of the massive torque involved - uncontrollable in fact in many, many cases.  Thus pairing the engines to put the thrust lines closer to the centreline.   In an electric model where the single-engine case is almost unimaginable, there is no point to counter-rotating props at all.  In almost aall cases for twin engined aeroplanes, models and full sized, the best option upon engine failure is to close the other throttle and glide to a gentle crash!  This is not the case of course in "Performance A" machines which can continue on one engine...provided the pilot is trained well enough!   My day job is as an Airbus pilot and we still consider very carefully the option of adding thrust on the good engine when we lose one as the yaw forces are huge.   HTH   david

Thanks David, yes he has the old original brushed version.  It seems such a pity to scraap the entire guts of the thing.  Maybe we should just replace it with a new P51 fuz and leave it at that.   Thanks again   David

My son's PZ P51 has finally had enough.  He could just replace the fuz and carry on Mustanging but ha fancies a change, so does anyone know whether the PZ Me 109 is a suitable replacement shell for the radio gear in the P51?   David

I did this years ago: I managed to get all the club chaps to fill in a crash log, for every signle crash over a summer. Then I analysed them into stage of flight, nature of weather etc.  It was a useful exercise.   I cant recall the actual outcomes now, but it was almost always pilot error: too slow, too fast, too much control etc.  Many people struggle to fly in strong winds because they confuse ground speed and airspeed -  I wrote an article for RCME about it and I see another one was published quite recently on the same subject, so it must be a perennial issue   The only crashes I have had in recent years have been caused by ejection of the nicad under high g loads, which is shameful I know but it happened.   The best bit of advice i ever received, years and years ago went like this; the guy had landed about two feet short and bitten the grassy verge. I said "oh bad luck". He turned right round and said "No, bad flying".   David   still trying to flog a H9 P51 and Saito 180 if anyone's interested.