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Member postings for Peter Christy

Here is a list of all the postings Peter Christy has made in our forums. Click on a thread name to jump to the thread.

Thread: BMFA numbers. Is this true, or a gross exaggeration?
14/11/2019 10:12:04
Posted by Wilco Wingco on 14/11/2019 09:51:19:

Well said Peter. How many of the current BMFA members remember the SMAE ?. We all started with chuck gliders, then KK rubber power or glider. Then, when we could afford it, a Mills 75 or DC Merlin. We built out own single channel R/C bang bang and flew in local parks. Not now. All must have at least 6 channel radio with a big trainer and a 40 nitro. We still had loads of fun for not much money. yes

Totally agree! I still get as much enjoyment -maybe more - out of flying a basic, single channel model, as I do a multi-channel aerobatic aeroplane or even a helicopter! My fellow club members think I'm nuts!

But here's a thought - and its something that the magazines may want to take on board. Back then, the mags were as much about the technology as the modelling. There was always a transmitter design, or a new receiver or some other project ongoing. Part of the attraction was that these things were NOT easy to build and get working. They were a challenge.

Alright, technology has moved on, but there are still plenty of projects out there for the computer generation. Look at Phil Green's Arduino encoder projects for modernising old radios, or his single channel emulators. Why don't the mags feature some of these projects? They are interesting and educational to the computer generation, as well as being challenging.

For myself, the first page I turn to when a new mag arrives is one of Shaun Garrity's excellent retro articles. Far more entertaining than reviews of the latest foamie fantastic, which frankly mostly have all the appeal of a month dead mackerel!

<Sigh!> Nostalgia's not what it used to be....! wink



13/11/2019 16:05:44

Martyn K: Well said! Couldn't agree more!



12/11/2019 18:07:55

Er, since membership runs from December 31st to December 31st, how do they know they've lost 2K members this year?

Surely, they won't know until the renewals are in and counted in January? And even then, there's always a fair number of stragglers!

Sounds like "journalistic license" to me!

I did read somewhere that the French FMAA (?) had lost 2K members. Perhaps the journalist misheard - or more likely, didn't care!

Journalists motto: "Never let the facts stand in the way of a good story!".



Thread: Help! Twisted wing
11/11/2019 10:42:16

Is the polyester covering heat-shrink? If so (and maybe even if not), simply twisting that wing BEYOND true and warming it with a hot-air gun should get it back in to shape.

It will need a bit of trial and error. When I've had this problem in the past, I sit on a stool, clamp the centre section between my knees, and twist the warped wing section by a roughly equal and opposite amount with one hand, whilst wafting the hot-air gun over it with the other. Let it cool while holding it in place, and when released it will spring back a bit (hence the over-correction). After a couple of goes, it should come true.

You may have to repeat the procedure periodically, as over time, it may return to its original twist.

Once you've done it a couple of times, it becomes second nature, and is a lot quicker than recovering and repainting!



Thread: The Gov't, CAA, BMFA & UAV legislation thread
11/11/2019 08:49:17
Posted by Chris Berry on 11/11/2019 08:13:05:

Apologies if this question has already been answered but what is the situation with people who do not have any access to emails or computers?

Several of our members do not use computers or have email addresses.

As i understand it, in order to register\test everyone needs an email address.

Can this be clarified please?


Edited By Chris Berry on 11/11/2019 08:24:54

I believe you can request a written version from the CAA.

This was one of the points I made in my written response to the consultation.



Thread: Charge rate ???
10/11/2019 18:49:12

Watts=Volts X Amps. Your Overlander charger is rated at 80 watts. A 6S LiPo is approximately 22.5 volts (will vary slightly with charge state).

So, re-arranging the above equation to Watts / Volts = Amps, we can see that 80/22.5= 3.55 amps. In other words, the MAXIMUM current you can expect from it with a 6S LiPo is 3.55 amps.

This is very close to the figure you are getting in practice.

To charge a 6S pack at 5A you need a charger (and power supply) rated at 22.5 X 5 = 112.5W minimum. Say 120W in round figures.

(Phil beat me to it!)




Edited By Peter Christy on 10/11/2019 18:49:46

Thread: The Gov't, CAA, BMFA & UAV legislation thread
10/11/2019 16:40:37
Posted by Michael Adams 3 on 10/11/2019 16:24:19:

What a lot of twaddle, I am now going to sign off, and carry on flying, to much is being put into this, what the CAA does that will be it & we will have to comply. go & have a fly & enjoy it, practice if you must. I am happy as I am.

Bye 4 now. Mike.





10/11/2019 11:56:24

Having just read the CAA's official response, (CAP1804, downloadable via a link on the BMFA web site) it is quite clear that there is absolutely no need to rush into registration.

I quote: "The legal requirement to register by 30 Novemeber 2019 remains unchanged, other than for members of the BMFA,SAA, LMA FPV-UK and ARPAS-UK and further selected organisations who will benefit from from general exemptions to allow their registrations to be completed as part of their membership process until 31 January 2020."

So if you are a member of any of the main UK flying associations, you don't need to do anything until you renew your membership. You are exempted until the end of January 2020 (to allow time for the renewal process to go through).

Further: "We will issue general exemptions from the requirement to complete the online competency test ahead of 30 November 2019 to: <snip> Qualifying members of the UK Model Aircraft associations." In other words, anyone who has an A or B cert or has taken the BMFA online competency test (when it appears - hopefully soon).

So, in short, there is no need to panic. Just keep calm and carry on.

Regarding the exemptions expiring on 30 June 2020, this is when the full EU UAS regulations come into effect, so the UK law will need bringing into line at that point. This will mean that any exemptions will need bringing into line at the same time. I think too much is being read into this "end date", and would expect any new legislation necessary to comply with the EU UAS regs to include a similar exemption.

Again, don't panic. Just keep calm and carry on.

I suspect we will know a lot more after the upcoming BMFA AGM. And for those chomping at the bit about the BMFA competency test, bear in mind that the BMFA has only a very small staff for such a large organisation, with much of the work being done by volunteers. This is necessary to keep membership costs down. We all know what a fuss even a trivial rise in membership fees causes.

I have no inside information, but I will be amazed if a lot of work is not going on behind the scenes to get all the necessary schemes up and running as fast as possible. And this is in addition to their regular workload, plus preparing for the AGM!

So, just be patient, and for heaven's sake, stop panicking! We may not be in an ideal situation, but it is far better than looked likely only a few short weeks ago.



09/11/2019 14:22:41

Well, there's the stated purpose and the intended purpose, and as with most government schemes, its often difficult to distinguish if the two are the same!

My point is that if the vast bulk of registrations come from the associations, it will raise the question of why the DfT / CAAis bothering at all, as it will just be a duplication of effort.

I believe we may be in danger of undermining the negotiating power of our associations if too many members register directly with the CAA.



Thread: CAA BMFA
09/11/2019 11:51:34

Registering via the BMFA (or one of the other associations) will make it much easier to determine the relative proportion of model pilots compared to drone pilots, which could be advantageous in future negotiations (see the other thread).



Thread: The Gov't, CAA, BMFA & UAV legislation thread
09/11/2019 11:47:56
Posted by Nigel Heather on 09/11/2019 10:59:25:

I was in two minds whether to register as an operator directly with the BMFA. Recently I’ve been leaning towards the direct approach with the CAA as it will be quicker and less palaver, but I’ve just had a thought.

Not that it will do any good (as the Hitchhiker’s Guide to the Galaxy analogy above) but I think we should all register through our respective associations.

That way will will be able to gauge just how many registrations there actually are and more importantly what percentage of those are from flying clubs. Though I suspect the CAA won’t be prepared to share that info if it turns out anything like I suspect.



Edited By Nigel Heather on 09/11/2019 11:00:09

Nigel makes a very good point here. If you register via the CAA, they will have no idea if you are a "drone" flyer, or a model aircraft flyer. If you register via the BMFA (or one of the other associations), it should be a simple matter to determine what percentage of registrations are independent drone operators compared to model flyers.

If the vast majority of registrations are for model flyers - association members, whom the CAA admit are not a problem - then the scheme can be shown to have failed in its intended purpose quite quickly, and to the benefit of us all.

I will be registering via the BMFA, and will be recommending that our club members do the same.



Thread: How many flyable aircraft do you have ?
05/11/2019 14:02:17

Too many! Fourteen, I think, plus around twelve helicopters!

Ranging from single-channel - complete with rubber driven escapements, via one with vintage "reeds", up to vintage full-house aerobatics and a couple of scale models. The helis are mostly vintage or scale, with a couple of (non-3D) aerobatic models.

Note to self: Must stop building......! surprise



Thread: The Gov't, CAA, BMFA & UAV legislation thread
03/11/2019 11:46:10




Thread: Where are the 50cc engines?
03/11/2019 09:34:01
Posted by Jason-I on 02/11/2019 17:09:58:

OS still sell a 0.15, a 0.35 and a 0.46.....

Perhaps I should have said affordable sub-.40 size engines! Over £100 for a .15? Really? And has anyone (other than Just Engines) actually got any in stock?

Even in Japan, that 15 is over £70! So I say again, where are the small affordable engines?



02/11/2019 16:59:49

More to the point for many of us, where are the engines under .40ci (6.55cc)?

For decades, engines in the .15 to .40ci (2.5cc to 6.5cc) were the cornerstone of club flying! Nowadays, aside from classified ads and ebay, these engines are just about extinct! PAW still produce diesels in this class, but where are the glows? How are people meant to learn how to master ic engines without the "beginners / club" size motors?

Or am I just being a sad old - er - person? indecision



Thread: power panel
02/11/2019 08:36:57

One of the reasons for using a large-ish ammeter is that it makes it very easy to diagnose when an engine is flooded or dry - as well as indicating a burned out plug! Old car battery chargers, broken power panels or ebay are good sources!

Whilst different makes of plug draw different currents, once you know what the normal current is, an ammeter will show clearly any problems. If the plug is drawing more current than usual, it is flooded. If the current rises slightly when the motor is cranked by the starter, but drops back to normal when the starter is removed, it is dry.

Also bear in mind that most plugs are designed for 1.5 volts. A plug should only glow cherry red, NOT ORANGE when lit! Running it at a higher voltage will not necessarily burn it out, but it can lead to the platinum coating flaking off, leaving the wire looking dull grey. If this happens, no amount of heat will get the engine running correctly, as the combustion process relies heavily on the catalytic action of the platinum - not just the temperature!

Cylon cells may be OK if used with long leads - say 3 ft of bell wire. But with a decent single NiMh, it is impossible to damage a plug by over-driving it, yet such a cell will deliver all the current that a plug needs.



01/11/2019 12:19:29


Use a good size (sub-C or C) NiMh with an ammeter in series as your glowdriver (fit inside a readily available plastic box), and fabricate a mount for a past-its-sell-by-date LiPo on your starter.

Far cheaper and more reliable than any power panel!




Thread: The Gov't, CAA, BMFA & UAV legislation thread
01/11/2019 08:38:35

Posted by BlueSky on 01/11/2019 08:14:50:

The rozzers do not have a good track record in making balanced judgments. Witness the harassment of the couple who happpend to live within a 5 mile radius of Gatwick airport. They had a facebook account with a photo of a drone that the bloke used to own and sold a long time before the 'incident'.

That was at the height of the "incident", when the plods were under extreme pressure to do something, anything - not that that's any excuse for 1) not investigating properly, before jumping to conclusions or 2) allowing the information to fall into the hands of the gutter press.

Our local police don't even have enough manpower to round up a gang of feral teens terrorising passengers at the bus station, let alone start hunting for drone flyers.

I dare say if they receive a complaint, and happen to be in the neighbourhood, they might investigate, so beware if your club has any "anti" neighbours. Otherwise, I can't see them bothering.

As for that poor couple who were pilloried, I hope they got handsome compensation from both the press AND the plods!



31/10/2019 14:42:47

Steve J: I stand corrected! I thought it was EASA who were tasked with drafting the rules - but presumably these were then adopted by the EU?

I somehow get the impression that, like so much bureaucracy, the intention is to be able to deflect criticism when it all goes wrong, rather than implement something worthwhile! (We didn't write this, honest guv!)

Or am I just an old cynic?



31/10/2019 11:15:46
Posted by Cuban8 on 31/10/2019 10:30:54:
So the basis for model flying within the jurisdiction of EASA being included in the drone legislation is because EASA decrees it.

Correct. However, all countries seem to have jumped the gun - imposing their own interpretation of the EASA regulations, before those regulations actually come into effect (due some time in 2020 IIRC).

As a result, there is no consistency between countries at present, neither do they seem to recognise each others regulations - something the EU was supposed to prevent! (Mods: Not a political statement, just factual!)

For example, the French pay no fees, so they probably aren't inclined to protest. On the other hand, the Germans have to install a metal, fire-proof plate, bearing their registration number!

How all this will shake down when the full regulations come into effect is anyone's guess at the moment!

My own view on this is that in five or ten years time, the whole thing will be abandoned! Drones whizzing around urban areas will become increasingly unpopular, so commercialisation will fail. The fad of drones in amateur hands will pass (just as CB radio did), and it will become uneconomic to collect the license fees (again, just as with CB radio, and indeed RC transmitting licenses).

Yes, there will be a year or two of upheaval and gnashing of teeth, but then it will settle down to "business as usual".

But there again, I'm an eternal optimist!




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