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Bryan Searle wrote, On 4/26/2014 12:56 AM:
There is no way that you can use a boom mic with a petrol engine! The vibration will couple directly through the fuselage attached boom and produces a huge signal. The use of ear-buds is a great idea, but the cost is somewhat eye-watering! I just use the cheapest Ebay aviation headset which will collapse to a reasonable size, unlike the premium headsets. Anyway, its is very difficult to converse with a self-launching 2 stroke at +6000rpm just behind your head, however much you pay for a headset/whatever. Vibration? What's that? I've used a boom microphone in my ASH 26 E for 19 years with no problems or complaints. I've used the cheapest ANR headphones I could find in 1998, and they've worked fine, also, though the sound reduction is quite acceptable even when the ANR is turned off. I use the boom mike with a foam "muff" cover, and speak with my lips touching the foam. I don't think a boom mike would work well in a noisy cockpit if it's away from your lips. -- Eric Greenwell - Washington State, USA (change ".netto" to ".us" to email me) - "A Guide to Self-Launching Sailplane Operation" https://sites.google.com/site/motorg...ad-the-guide-1 - "Transponders in Sailplanes - Feb/2010" also ADS-B, PCAS, Flarm http://tinyurl.com/yb3xywl |
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On Saturday, April 26, 2014 3:56:21 AM UTC-4, Bryan Searle wrote:
There is no way that you can use a boom mic with a petrol engine! The vibration will couple directly through the fuselage attached boom and produces a huge signal. My previous motor-glider (gas-powered) was delivered with a fuselage-attached boom mike, which worked adequately. The use of ear-buds is a great idea, but the cost is somewhat eye-watering! Compared to the cost of a motor-glider? I just use the cheapest Ebay aviation headset which will collapse to a reasonable size, unlike the premium headsets. Should go well with a motor-glider purchased on eBay... |
#13
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OK - I was wrong, it does appear possible to use a boom mic with a petrol
engine (Wankel?)! But I thought the idea of this thread was to gather useful advice on new installations and switching mics. In general I hear that vibration causes a lot of problems, so although a boom mic may work OK it seems sensible not to advise its use with the engine on. Further, there are alternatives to the traditional dynamic boom mic for gliders (not supported by some radios) that may usefully be considered and preferred by some. At 21:19 26 April 2014, Eric Greenwell wrote: Bryan Searle wrote, On 4/26/2014 12:56 AM: There is no way that you can use a boom mic with a petrol engine! The vibration will couple directly through the fuselage attached boom and produces a huge signal. The use of ear-buds is a great idea, but the cost is somewhat eye-watering! I just use the cheapest Ebay aviation headset which will collapse to a reasonable size, unlike the premium headsets. Anyway, its is very difficult to converse with a self-launching 2 stroke at +6000rpm just behind your head, however much you pay for a headset/whatever. Vibration? What's that? I've used a boom microphone in my ASH 26 E for 19 years with no problems or complaints. I've used the cheapest ANR headphones I could find in 1998, and they've worked fine, also, though the sound reduction is quite acceptable even when the ANR is turned off. I use the boom mike with a foam "muff" cover, and speak with my lips touching the foam. I don't think a boom mike would work well in a noisy cockpit if it's away from your lips. -- Eric Greenwell - Washington State, USA (change ".netto" to ".us" to email me) - "A Guide to Self-Launching Sailplane Operation" https://sites.google.com/site/motorg...ad-the-guide-1 - "Transponders in Sailplanes - Feb/2010" also ADS-B, PCAS, Flarm http://tinyurl.com/yb3xywl |
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