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lcottrell
Joined: 29 May 2006
Posts: 1494
Location: Jordan Valley, Or
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 Posted: Wed Oct 19, 2011 6:24 pm Post subject: camera mounts |
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As most of you know, I bought a Tachyon HD camera, and I have been unable to get the harmonic wave out of it. It has been very disappointing to say the least. I was able to tame all that with the regular Tachyon (at) 480, but something about the HD mode will not be tamed by foam. If one sticks it on their head it does fine, but you end up with greatly reduced visibility shooting through the wind screen. The fella that shot the recent video with the camera mounted on the gear leg impressed me with the stability of the video, so I thought that I would try it and see what would happen with this Tachyon.
The attachments show what I came up with. I made a preliminary flight test today and found that at max throttle of 6000 RPM's there were no harmonics, but at 5400 where I normally cruise, I had some, not as bad as before, but more than I want. Tomorrow I will, weather permitting, do some more testing and see what RPM's give me the best video. It does look promising for a change. The nice part of where it is located, is that I can reach out the back of the door and turn it on and off as I need and cut down on battery usage, and editing.
Larry
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Richard Pike
Joined: 09 Jan 2006
Posts: 1670
Location: Blountville, Tennessee
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| Posted: Thu Oct 20, 2011 3:52 am Post subject: Re: camera mounts |
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Keep us posted. I got a Kodak Zi8, and I love the pictures, but the shape of the camera is totally wrong for putting out in the windstream.
Have you thought about adding some weight to the mount? My old Honda Ascot 500 single has a heavy weight in each handle bar end, and it does wonders for the vibration.
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Richard Pike
Kolb MKIII N420P (420ldPoops)
Kingsport, TN 3TN0
Forgiving is tough, being forgiven is wonderful, and God's grace really is amazing. |
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lcottrell
Joined: 29 May 2006
Posts: 1494
Location: Jordan Valley, Or
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| Posted: Thu Oct 20, 2011 5:56 am Post subject: camera mounts |
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Phil,
The list is so quiet, I doubt if we will be disturbing anyone. It is engine harmonics that affects the camera. The way that it is now is as solid as I can make it. After all it has a 400 pound airplane attached to it by Velcro bottom and side, and the mount is as solid as I could make it. As I said I didn't have any problem with the regular camera that recorded at 480 mounted in foam to absorb the vibration, but the HD is another thing altogether. My test flight was with cleko's, I have now riveted it in solid and the gear leg covering is foamed in pretty solid. The weather should cooperate today and I will try to see if I can find a rpm setting that will stabilize the thing.
Larry
Note: If you forward this email, please delete the forwarding history, which includes my email address.
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dan42101(at)yahoo.com
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| Posted: Thu Oct 20, 2011 7:37 am Post subject: camera mounts |
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If the camera has remote control RFI could be a possibility... If the foam with bob-weight does not help, you may want to try rfi shielding.
From: Larry Cottrell <lcottrell1020(at)gmail.com>
To: kolb-list(at)matronics.com
Sent: Thursday, October 20, 2011 8:53 AM
Subject: Re: Kolb-List: camera mounts
Phil,
The list is so quiet, I doubt if we will be disturbing anyone. It is engine harmonics that affects the camera. The way that it is now is as solid as I can make it. After all it has a 400 pound airplane attached to it by Velcro bottom and side, and the mount is as solid as I could make it. As I said I didn't have any problem with the regular camera that recorded at 480 mounted in foam to absorb the vibration, but the HD is another thing altogether. My test flight was with cleko's, I have now riveted it in solid and the gear leg covering is foamed in pretty solid. The weather should cooperate today and I will try to see if I can find a rpm setting that will stabilize the thing.
Larry
Note: If you forward this email, please delete the forwarding history, which includes my email address.
[quote] ---
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phactor9
Joined: 16 Jun 2011
Posts: 78
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| Posted: Thu Oct 20, 2011 8:15 am Post subject: camera mounts |
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Yea, you're right.
Anyway, my reasoning is that the entire airframe vibrates, so why not make the cam body heavy by affixing it to a weight, and then isolating it from the airframe much like we isolate the engine using Lord (and other) mounts. Paintballers don't have the problem we do; a shaking plane.
When I'm finally able to test (in a few months), I'll report my findings, too. I can't wait to put my new Tachyon OPS HD to the test!
Phil H.
--- On Thu, 10/20/11, Larry Cottrell <lcottrell1020(at)gmail.com> wrote:
[quote]
From: Larry Cottrell <lcottrell1020(at)gmail.com>
Subject: Re: camera mounts
To: kolb-list(at)matronics.com
Date: Thursday, October 20, 2011, 9:53 AM
Phil,
The list is so quiet, I doubt if we will be disturbing anyone. It is engine harmonics that affects the camera. The way that it is now is as solid as I can make it. After all it has a 400 pound airplane attached to it by Velcro bottom and side, and the mount is as solid as I could make it. As I said I didn't have any problem with the regular camera that recorded at 480 mounted in foam to absorb the vibration, but the HD is another thing altogether. My test flight was with cleko's, I have now riveted it in solid and the gear leg covering is foamed in pretty solid. The weather should cooperate today and I will try to see if I can find a rpm setting that will stabilize the thing.
Larry
Note: If you forward this email, please delete the forwarding history, which includes my email address.
[quote] ---
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lcottrell
Joined: 29 May 2006
Posts: 1494
Location: Jordan Valley, Or
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| Posted: Thu Oct 20, 2011 9:10 am Post subject: camera mounts |
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Phil, if yours is the Micro camera with the rechargeable battery then it may well not have the same problem that I have encountered.
I just landed after my RPM tests and am putting together a video that will show my findings, but that will take a while. Should be online before evening. In essesence here are the findings. The HKS top cruise is 5800. I did a few minutes at 5800 and found that there was a bit of shake. At 5600 it smoothed out and was as nice as anyone other than a perfectionist could ask for. At 5400 which is where I generally cruise at and is best speed verses fuel consumption, it shakes enough to piss me off. At 5100 which is minimum cruise to my mind, it is as steady as a rock. The wife says that it is so slow that it is boring, so I guess it is 5600 RPM's for me most of the time.
Keep in mind that if one used a three blade prop, or a different engine all that would change. The best part is that it is possible without too much trouble, and I can turn it on and off while I am flying. That has to be done manually since this one doesn't have a remote. It takes some serious batteries to run this little sucker, and by only using it when you actually want to record something you could use the cheaper Duracell type.
My gear leg covers are of aluminum filled with foam.
Film at 2PM
Larry
Note: If you forward this email, please delete the forwarding history, which includes my email address.
[quote] ---
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phactor9
Joined: 16 Jun 2011
Posts: 78
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| Posted: Thu Oct 20, 2011 10:12 am Post subject: camera mounts |
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Mine is the newest OPS HD, which Tachyon is just now shipping (paid for mine months ago, but just got it last week).
http://www.tachyoninc.com/opshd.php
1.2 oz
34 grams
2.9 x 1 x 1 in
7.35 x 2.6 x 2.6 cm
The one that is three quarters wide, not two. I can't wait to put it on something! Maybe the neighbor's dog!
--- On Thu, 10/20/11, Larry Cottrell <lcottrell1020(at)gmail.com> wrote:
[quote]
From: Larry Cottrell <lcottrell1020(at)gmail.com>
Subject: Re: camera mounts
To: kolb-list(at)matronics.com
Date: Thursday, October 20, 2011, 1:06 PM
Phil, if yours is the Micro camera with the rechargeable battery then it may well not have the same problem that I have encountered.
I just landed after my RPM tests and am putting together a video that will show my findings, but that will take a while. Should be online before evening. In essesence here are the findings. The HKS top cruise is 5800. I did a few minutes at 5800 and found that there was a bit of shake. At 5600 it smoothed out and was as nice as anyone other than a perfectionist could ask for. At 5400 which is where I generally cruise at and is best speed verses fuel consumption, it shakes enough to piss me off. At 5100 which is minimum cruise to my mind, it is as steady as a rock. The wife says that it is so slow that it is boring, so I guess it is 5600 RPM's for me most of the time.
Keep in mind that if one used a three blade prop, or a different engine all that would change. The best part is that it is possible without too much trouble, and I can turn it on and off while I am flying. That has to be done manually since this one doesn't have a remote. It takes some serious batteries to run this little sucker, and by only using it when you actually want to record something you could use the cheaper Duracell type.
My gear leg covers are of aluminum filled with foam.
Film at 2PM
Larry
Note: If you forward this email, please delete the forwarding history, which includes my email address.
[quote] ---
| | - The Matronics Kolb-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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lcottrell
Joined: 29 May 2006
Posts: 1494
Location: Jordan Valley, Or
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| Posted: Thu Oct 20, 2011 10:35 am Post subject: camera mounts |
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I am looking forward to seeing how it works out. I wish that I had waited for it. I believe it will work better than the one that I have. The mounting system that comes with it or at least the one with mine wasn't snug enough and I think contributed to the problem.
Larry
Note: If you forward this email, please delete the forwarding history, which includes my email address.
[quote] ---
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