Messages

1

FPV / FPV in IRL

« on: May 03, 2010, 23:42:20 PM »

It looks like game is not worthy the candle. All this hassle with licence, then equipment for more then 1k $ , everything just to try the new toy - I am not sure. If someone wants to be very legal must not excite 25 mW for 5.8G transmitter. It is enough to reach 100m range (using quite expensive devices). On the other hand , I found report about 400m range on the ground with the same power and band. 300-500m is the range what I  look for.
And two words about 'being legal' :  Many people buy/import 5.8G AV links to transmit video from room to room , to look after a baby , to see who knocks to door. Most of them don't even know what they use. Intensity of electromagnetic field   decreases proportionally to R^4 (R - distance between aerials) ... so this kind of occasional transmission (25mW), far from the cities and people aggregations would be hard to track , but most important : the chance that it would  flood or interference other signal is very little.
Common sense is needed.
To be save : don't use 0.9 ; 1.2 ; 1.3 ; 2.4 GHz.
A few days ago I found an interesting website (not mine ) with 5.8G devices , reportedly very good but... prices , uff.
http://www.iftrontech.com/index.html

best regards - Krzysztof

2

FPV / FPV in IRL

« on: April 30, 2010, 04:21:21 AM »

900/1800 MHz band is used by cell phones. I wouldn't go this way..
I don't want to write my next post from behind the bars
2.4G and 10mW ... maybe a little bit more

Another alternative is 440MHz for video. Advantage of this system is that it would be possible to fly with company of 2.4G and 35 MHz RC transmitters. I found the webside with very tiny TX.

3

FPV / FPV in IRL

« on: April 29, 2010, 06:55:39 AM »

I can only say what I heard from people who tried to place video Tx and model Rx on board (close together). Please take under review that Video Tx are not perfect and have problems with frequency drift, temperature frequency drift etc.  A few meters distance is OK but few centimeters is not enough.  That is way flayers use 1.2G or 1.3G for video. 2.4 is not good for crowded places.
When you ask about FASST system , you're absolutely right but even that you will not see anything if this kind of  Tx works close to you. This is from practice experience (not mine I have to stress).
I have just order Eagle Tree OSD and telemetry system for my 3.3m glider. The issue of Tx for video is still open. I am going to use 35MHz system and probably 2.4G. Wicklow Mountains is the place where I am going to fly. I'll let you know , be patient

best regards

PS sorry for my English

4

FPV / FPV in IRL

« on: April 27, 2010, 05:07:33 AM »

''It will be interesting to hear what kankrz has to tell us about the matter.''

What are you laughing at ? I really don't understand .The problem is that TX and Rx cannot be to close. Strong Tx signal will stop up/look  Rx.
You loose control after a few meters  flight. How do I know ?  From people who tried to do this.  Reportedly , FASST from futaba cause big problems. The only useful band is 1.2 or 1.3G.

Best regards

5

FPV / FPV in IRL

« on: April 26, 2010, 02:56:23 AM »

It looks like we can assume that FPV is banned in Ireland. Tx 2.4G/10mW is not sufficient for this purpose. One working FASST futaba transmitter  will successfully block any video on this band.  Additionally, 2.4G video TX cannot be installed  together with 2.4G Rx.

6

FPV / FPV in IRL

« on: April 21, 2010, 14:10:11 PM »

Hi Guys
I guess everyones heard about First Person View flight systems. Who knows what kind of Tx devices are legal in Ireland ? How can I get information about Tx restrictions ?
I now that people (around the world) use 900MHz/1W , 1.2GHz/500mW  or 5.8GHz/500mW for video links.
I found a website in UK which offers  2.4GHz  and 5.8GHz Tx/Rx systems and I assume that this devices are legal in UK. Is Irish law similar to UKs  in this matter?

7

Slope Soaring / HLG

« on: May 09, 2007, 23:49:45 PM »

Nice bird

8

Slope Soaring / Destiny - set up

« on: May 02, 2007, 11:52:43 AM »

Hi

I am not sure if I've understood 'set-up' properly But , Destiny is flown by 2xHS81 for tail and 2xHS125 in wing. Receiver Graupner R16 scan , transmiter MC19 synth. Manufacturer recommends CG at 54-57mm and it is done like that.  I had to put in to the nose about 130g lead to balance it.
Battery : 4xAAA uniros 700mAh. I am not very experienced pilot and this model is my first such small. Maybe I simply need more time in air with this model.
Now I am busy with Piper and I have to decide what engine will have installed - MVVS petrol what I have is too big. I've  seen very atractive offer from US - Saito 72 black (4stroke) costs about 250$.  Did someone buy engine in US ? How does custom duty look?
The second option is OS 70 FL from Germany (170euros).
Any suggestions ?
Thanks and very sorry for my broken English - Kris

9

Slope Soaring / Last Friday on slope

« on: May 01, 2007, 05:22:31 AM »

Last Friday I was flying my new glider 'Destiny' on Glencree slope.
I my opinion this model is a bit to heavy and needs to be perfect balanced.
Two mms back or forward make a big diference.
When I was flying , my car was visited by unwanted guest. I lost all my money in cash and mobile phone   . So be carefull and pay attention on dark green Renault Laguna.  Unfortunately I did not noticed registration numbers of this car.
This story took place about 12.00 - that is unbelievable !
When I spoted that some one is in my car I had to do an emergancy landing and then I hardly found my glider.
Pictures soon.

regards - Kris

10

Sports / It's not too big ?

« on: April 20, 2007, 00:48:59 AM »

Hi all
About a year ago I bought in Germany acro model 'Super Star' 1.8m. Model was provided with petrol engine 1.6 (26cm). I have never flown this sort of model before but in my opinion the price was very attractive so I bought it.
I decided to improve my fly skills before I try to fly it. In the meantime I bought 2m Piper Cub for flying training. Manufacturer recommends glow engine .46 - 60. My question is : may I use this petrol engine for Piper ?  It is MVVS 26cm.
I heard opinion that it would be a perfect replacement but it was only one opinion. What do you think guys ?
Now, I have two sport engine models on my wardrobe and I am flying glider
Help

regards - Cris

11

Slope Sites in Ireland / Thanks to everybody

« on: April 19, 2007, 23:15:11 PM »

Hi Guys

I would like to thank  everybody for all hints where to fly.
Tomorrow I am going to check mentioned places.  'Destiny' is ready to fly, batteries for model and camera are also ready.  I hope, the weather is not going to be worse.
After flying I will try to put here a few pictures from this trip.

Thanks and see you on the slope - Cris

12

Slope Sites in Ireland / wind from S

« on: April 19, 2007, 03:21:57 AM »

Hi all

I am new here.  I came to Dublin from Poland in 2004. Since last month I am trying to fly by my glider (Andromeda from ArtHobby) on Killakee slope.
Few days ago I bought new model 'Destiny' from Valenta and it's almost ready to its first flight. My question is : Where usually do dublins guys fly with S wind ?.
We will have S wind  this weekend.

thanks in advance and sorry for my broken English - Cris