On 01/01/2019 14:43, Martin Gregorie wrote:
> On Tue, 01 Jan 2019 11:55:02 +0000, The Natural Philosopher wrote:
>
>> Well as I said I started out with rudder only.  The model glided in at
>> its own speed.
>>
> I started off with Control-line and sport free flight (Aeromodeller
> plans) and then into single channel radio (Baz Bombs if you remember them
> - lots of fun)

Mine was the sharkface...I remeber Baz Bombs OK, similar but a bit larger



and then switched rather abruptly into just flying
> competition Free Flight models: FAI power, 1/2A power, A1 and A/2 gliders
> with a bit of payload, scale and small rubber on the side.
>
> I concentrated on concentrating on F1A (A/2 towline gliders) and 1/2A/F1J
> (small power models) from 1975 until 2004 when I jumped tracks again to
> full-size gliding.
>
>> Translating that to model terms thats probably 10mph plus half the
>> wind speed,
>>
> 15 mph may be a better estimate. An F1A glider (2.25m span, 15 dm^2 area,
> 420g all-up weight) glides at about 10mph - in flat calm you can run
> alongside the model and pick it out of the air as it comes down to chest
> height. Thats a moderate to slow running speed, so I'm guessing 10 mph.
>
> I've never seen any powered RC model fly that slow, though I suppose a
> park flyer might do so.

Ah well I fly old timers mainly.

And park flyers.

And gliders.


>
>> I wouldnt normally fly at all at anything over 10mph wind
>>
> Free flight competitions are stopped when the wind speed exceeds 9 m/s
> averaged over 30 seconds. Thats 20 mph or 17.5 kts. For comparison I
> don't normally fly my (full size) Libelle if the wind exceeds 25kts at
> flying height. Above that the thermals get broken up by wind and I'd be
> flying landing approaches at 65 kts or a bit more.
>
>


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