Fantastic work Henning, best I have seen. Try the super muffler with an APC- 7-3,& 7-4 prop. I did not have your equipment but what I found out with my testing...
Yikes! Standard Fora puts out 112 dB. I can't believe some people don't wear hearing protection at all around combat engines. First time I've heard the term...
Jeff Rein: " Fantastic work Henning, best I have seen. Try the super muffler with an APC- 7-3,& 7-4 prop. I did not have your equipment but what I found out...
Update on F2D Noise Reduction: - See the official Russian proposal for noise reduction - A response to the Russian proposals - Interesting results from a test...
Interesting indeed - does 27,000 RPM really make much of a difference noise-wise vs. 30,000 RPM? Does anyone actually launch at 30,000 RPM? I think those who...
Henning, did you think of 5.5 or 5mm output to have some tests? Noise wise it should be more effective for sure, course it's expected the power loss even more...
Hi Yaroslav My idea is not to make any restriction on the outlet from the silencers. I only want to check that the silencer can reduce the pink noise from...
Hi Henning, As far as I understood your idea is to measure the noise it's self. Well, I have followed up all the ideas in Russian forum came up lately and...
Hi Yaroslav My idea is not measure the noise from a running engine on a model but to test the effectiveness of the silencers with a noise generator. At a...
Hi Yaroslav My idea is not measure the noise from a running engine on a model but to test the effectiveness of the silencers with a noise generator. At a...
Can't say I know for sure, but I've been told sub-piston induction does not work that well for muffled engines. Unless the engine is so inefficient that there...
I would tend to agree with that. F2D banned sub piston induction when they brought in the 4mm venturi. Otherwise we would have seen piston port intake motors. ...
I would partly agree. I think the idea of sub piston induction is to get more aggressive blowing off, as actually the power doesn't go up if you keep ...
The best rules are the simplest. We(combat fliers in general) do not have the time or money to deal with complicated rules. We do not have support of large...
Nice work for letting us in on the info, but this is getting out of control. No new flyers will be entering f2d after they see what is going on. We need to...
Yes. Maybe we should think about just doing our own thing over here in the USA. All the noise restrictions are due primarily to too many people crowded in...
Come to the BG no mufflers, no ear plugs. Buzz ... From: combat-l@yahoogroups.com [mailto:combat-l@yahoogroups.com] On Behalf Of Jensenator Sent: Thursday,...
Jeffs contest flier for the Bladder Grabber looks rad! If I'm not to old to say that. Hope he's having Tee shirts this year. I'm putting my order in for a 2XL...
I think you guys are beginning to see the "Light"......... Â For the 8 guys that actually take F2D seriously (OK, maybe it's 12 guys).....the rest of us just...
Easy Soup, ya don't wanna blow a gasket. You're right and here in the little N.W we are doing our own thing. The speed limit combat event we call 80 mph has...
Henning, I guess these proposals you do because of somebody from FAI quite push you guys? As I don't think it's fun for you at all to see F2D dying. What ever...
sorry... didn't finish... checking the entry list now, it looks only 1/3 of all the countries participate in the event have full team of 4 fliers. Netherlands,...
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