brubakermal(at)yahoo.com
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 Posted: Tue Mar 10, 2015 5:29 pm Post subject: firefly parts for sale |
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I have a wind screen axil fittings and folding wing brace for sale i can send pics off list .make a offer
Sent from Yahoo Mail on Android From: mojavjoe(at)comcast.net <mojavjoe(at)comcast.net>;
To: kolb-list <kolb-list(at)matronics.com>;
Subject: Re: Headset Modification
Sent: Wed, Mar 11, 2015 12:46:47 AM
To make ear buds more like Clarity Aloft ear pieces I found a set of ear buds that had the rubber ear pieces that slipped over a small knob. Removed the rubber and found a small straw that would fit snugly over the knob. Purchased some of the hearing protectors that mash down and using a small heated drill bit burnt a small hole through the length of them. Cut the straw about 1/4 to 3/8" long and slide the base of the protector over it and the whole thing over the knob. The straw keeps the hole open and will still allow the ear piece to be mashed enough to fit into the ear cavity.
From: "John Hauck" <jhauck(at)elmore.rr.com>
To: "kolb-list" <kolb-list(at)matronics.com>
Sent: Tuesday, March 10, 2015 6:11:23 PM
Subject: RE: Headset Modification
Larry C:
Sounds great. Got to get me some "cheap" ear buds and go to work. I have several DC and Sigtronic headsets to play with.
My hearing has gotten so bad and the noise level is so great in the MKIII it takes the fun out of flying. Biggest complaint I have trying to knock out 8 hour flight days. Noise is extremely fatiguing.
BTW: No cockpit noise comparison between a Kolb and an RV4. Kolb is much, much louder and of a much higher frequency, engine and prop. Pushers are normally much louder inside as well as outside the cockpit. Irritates me how quiet my friends RANS S7 is with the same engine and prop I am flying. 
john h
mkIII
Titus, Alabama
From: owner-kolb-list-server(at)matronics.com [mailto:owner-kolb-list-server(at)matronics.com] On Behalf Of Larry Cottrell
Sent: Tuesday, March 10, 2015 4:14 PM
To: kolb-list(at)matronics.com
Subject: Re: Headset Modification
On Tue, Mar 10, 2015 at 1:34 PM, Charlie England <[url=javascript:return]ceengland7(at)gmail.com[/url]> wrote:
I fly an RV-4 using a QT Halo earplug style headset, and it is quite a bit quieter than the old Lightspeed 15's (active noise cancelling) I used to use. The Halo actually has the speaker elements mounted on the headband, with small tubing connecting to the ear plugs. I would have thought that the Clarity Aloft would be even quieter. Are you sure you had a good seal between the ear plugs and your ear canal?
------------------------------------------------------------------------------------------------------------------------
I just finished modifying my Sig S45 headset with a set of "ear buds". Using a "pencil solder gun" I had no problem at all with soldering the wires? to the speaker. Perhaps it was the type of flux core solder that I had.
I also bought the QT Halo headset, and I liked it for the most part. I had no problem hearing the radio, in fact I had to turn it down quite a bit, and the best part is that I could listen to my music while flying. Not very satisfying with a normal headset. I however was not a fan of the mic. I put an Oregon Areo mic cover on it and it helped a lot, but the "boom for the mic was as limp as 30 day old celery. I finally taped it to some alum wire to give it a bit of a spine. Other wise I had to hold it in front of my mouth if I wanted to talk to some one. My cockpit is just a cover (factory wrap around) over the area that I sit. If I turned my head it would crack the squelch and I would get a shot of full motor noise. So it was necessary to turn up the squelch a lot to keep it from cracking.
You asked about seal, and I did have a good seal, but you also pick up ambient noise through the bones that surround your ear as well. While I could hear great, I felt that the noise of that HKS was still too loud. I was considering using a set of ear muffs to help with the noise. To be clear- I never had any problem with hearing the radio or my music. My wife however often mentioned the motor noise was quite loud, and there was occasional static. ( I think that there are better mic's out there than the one that they use.)
I have a base station here at the house so I can talk with the wife to get her input on clarity on her end of the conversation.
I decided to try adding the ear buds to my Sig S45's. I have found them to be the best option for me even over ANR headsets. ( The ANR is set for GA and works best on the 2400 RPM's of those engines. Ours turning 6000 RPM, are out of the range that they generally work best at.)
However wearing glasses I was not happy with the noise even with gel ear seals on the S 45's. I felt that I had to turn the sounds that I wanted to hear up to the point that my old experienced ears would be still getting damaging noise levels. I could not hear my music very well and if I played it as loud as I needed to hear it at all in the plane, it would cause me to wince at that level out of the plane.
After completing the modification I rolled the plane out for some touch and go's. I plugged the ear buds in, covered my ears with the headset, and found that I had to turn the volume down on both the headset and the music radio for the first time. The noise level was substantially reduced from both the Halo set and the S45 before modification, with the ear buds. Upon landing my wife also confirmed that on her end the transmissions were a lot clearer, louder and without static.
I will be using my Halo set as a backup. There was that much improvement.
Thanks Malcom.
Larry
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