anjum_jabiru

I have ordered an inline volume control cable. I will use it at near minimum volume with my audio recorder, and see if it does the trick 😉

Just to clarify, you attach the recorder through line in - to your splitter from the audio jack in the intercom, and not directly into your headset. Is this correct? And if that's the case, the magic lies in your recorder and setting the input volume to the minimum with no AGC. Thank you so much. You have been so helpful!

Hi, I had a look at your video. Your audio is crystal clear. Please could you let me know, what set up do you use for your audio? Thanks:)

You have any video footage on YouTube that I can watch? I was thinking of getting DJI Osmo 6s action cam at some point.

I am currently using a cheap action cam, Qpix. But what I realised was that the quality of most action cams or dash cams is not very good. I am therefore planning to use my old Samsung S5 for the video, with line in audio as well on the S5, or a separate audio recording with an audio recorder, which I can then sync with my video.

I was planning to do something similar with my old S5, if everything else failed. I use Autoboy app on the phone as it records for > an hour. I was wondering what app do you use, so that it does not stop recording every half an hour. Also, I believe it will consume a lot of battery about 1 % per min, in 720p with screen backlight off.

The problem is with getting a clear audio. My current set up is giving a lot of static which I find hard to eliminate using audacity. I am planning to use my phone audio recording with a TRRS splitter / adapter to see if I can get a better quality recording. I have tried using a ground loop isolator, but results were still disappointing while recording audio from the radio. Another option is to try using a dedicated audio recorder with a line-in facility rather than just a mic option, to see if it gives me any better results.

Looks like a very expensive option. I would rather spend that money on flying.

Hi Everyone, I am looking to record the cockpit audio during my flying. I would be grateful if someone could suggest a proper set up. Currently I have a digital audio recorder of mediocre quality attached via a 3.5 mm adapter pin and splitter to one of the headphone jacks of the intercom. Unfortunately, I get a lot of noise / hiss / buzz / static which is unbearable and almost completely blots out the audio in the recording. It is impossible to hear what is being said, when listening to the recording. It does not interfere with the normal operation of the intercom, while listening or transmitting on the intercom. Any help or suggestions will be really appreciated. If there is an existing thread on this topic, please move this or direct me to the existing thread. Thanks

Hi Dayble, In case you are still looking for an answer, the J230 cruising at 107 knots is expected to burn 17 litres / hour at 2600 RPM. You can go to the link below and press CTRL+F and type 107 in the search box. It gives a table of RPM/Fuel Consumption/True Air Speed http://adelaidesoaring.on.net/wp-content/uploads/2017/02/J230C_Section0_9_POH.pdf Cheers 🙂

Any reason why one of the cylinders would lose compression in mid-flight?

Hi kgwilson, when I did a few lessons on a Cessna 152, it was from the shortest licensed grass strip (490m), in Netherthorpe, UK. The instructor used to use 10' flaps and called it the "hedge" check. This was to ensure you clear the hedge at the end of the runway. I think it's a good idea to use half flaps so that you can be airborne asap, and start climbing, in case you have an engine failure and need the runway ahead of you. Besides, one never knows, but you might need the runway for a longer than usual run on a hot day or high altitude. I completely agree with regards to retracting half flaps and full power. The only issue is, that in the 3 to 5 seconds it takes to retract the flaps, and push the carb heat in, one can chew up to 100m of useful runway in a t&g, if you are travelling at 50knots. May not be very practical, while landing on a short runway, if you are already 200m into the runway during your landing flare. The best option may still be to go around with full flaps, with nose forward, and retract flaps once you are established in a climb.

I think this makes a lot of sense. The reason you apply take-off flaps is not to increase the lift. It is actually to increase the drag, without affecting the lift too much. This gives you a steeper climb path (if there is such a thing), making it appear as though you have a better climb performance. What is actually happening in reality, is that you are able to climb to the desired height, within a lesser horizontal distance travelled (due to the drag created by the take-off flap). On applying take-off flap in a glide, once again the horizontal distance travelled will reduce (due to the increased drag), without much impact on the lift being generated. Hence your glide distance (horizontal distance travelled) from a given height will reduce. Thus causing a deterioration in your glide performance!

The Jabiru lists the best glide speed of 65kt for the J230. Any ideas, if this is without flaps or with half flaps? In my understanding half flaps increase lift, without increasing much drag, hence half flaps should give you better glide performance.

A Jabiru Gen4 engine quit today, and the J170 landed safely in a paddock. No further details available. So yes, the Gen4 engine is not immune to failures. Just not being reported like many other engine failures.