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07-13-2012, 10:24 AM
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Join Date: Sep 2006
Location: Port Orange, FL
Posts: 1,020
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Engine valve video made using cheap dental cam
After reading Erich Weaver's report on cheap Chinese made dental cam I brought one and modified it. This morning after oil change I inserted the camera through lower spark plug holes and recorded video of valves. Since I held the camera in one hand and turned propeller using the other at times images were shaking. I don't have experience on engine thus can not tell if my valves are fine. If you see any problem please let me know.
Erich's report:
http://www.vansairforce.com/communit...ad.php?t=83011
My video:
http://youtu.be/Dq0H_yqSuGw
__________________
Ted Chang, VAF #681
RV-9A #91048, flying since 8/2006. 2,050 hrs.
2018 Due paid
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07-13-2012, 11:42 AM
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Join Date: May 2012
Location: Bowdoinham
Posts: 180
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I have to say...that's pretty cool...
__________________
Nick "Hairball" Knobil
RV8 N80549 (First Flight 2003)
Aerosport O-360A1A, Dual LS CDIs, WW200C
Bowdoinham, Maine
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07-13-2012, 12:16 PM
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Join Date: Aug 2006
Location: santa barbara, CA
Posts: 1,682
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Way to go Ted!
The color pattern on your exhaust valves looks nice and symmetrical, which is what you want.
Which camera did you go with? I'm guessing you cut the camera case at the neck to make it smaller and used some heat shrink tubing to hold it together?
Erich
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07-13-2012, 12:20 PM
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Join Date: Sep 2006
Location: Port Orange, FL
Posts: 1,020
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Quote:
Originally Posted by erich weaver
Way to go Ted!
Which camera did you go with? I'm guessing you cut the camera case at the neck to make it smaller and used some heat shrink tubing to hold it together?
Erich
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Erich,
I got ORC-03B that is the same as yours, I belive. Yes, I cut the case using a hand saw. It quite easy to do. I don't have big heat shrink so I just used tape. It works well. Thanks for sharing the information.
Ted
__________________
Ted Chang, VAF #681
RV-9A #91048, flying since 8/2006. 2,050 hrs.
2018 Due paid
Last edited by tc1234c : 07-16-2012 at 09:11 AM.
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07-13-2012, 12:39 PM
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Join Date: May 2005
Location: Tuttle, Oklahoma
Posts: 2,563
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Quote:
Originally Posted by tc1234c
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Hey! How did you get that little tiny man into that little tiny hole? He sure is looking down his nose at the camera. Or maybe he is just "thumbing his nose" at the camera. 
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07-13-2012, 01:11 PM
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Join Date: Sep 2006
Location: Port Orange, FL
Posts: 1,020
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Quote:
Originally Posted by RVbySDI
Hey! How did you get that little tiny man into that little tiny hole? He sure is looking down his nose at the camera. Or maybe he is just "thumbing his nose" at the camera. 
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I have auto plugs on top. If not, the tiny man would be able to get through the hole  .
__________________
Ted Chang, VAF #681
RV-9A #91048, flying since 8/2006. 2,050 hrs.
2018 Due paid
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07-13-2012, 01:37 PM
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Join Date: May 2008
Location: Brisbane Qld. Aust.
Posts: 2,271
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Why were the valves replaced at 330 or something hours?
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07-13-2012, 01:43 PM
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Join Date: Sep 2006
Location: Port Orange, FL
Posts: 1,020
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Quote:
Originally Posted by RV10inOz
Why were the valves replaced at 330 or something hours?
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My cylinders were on the ECi cylinder head rework SB list. They could not rework them so they sent me four new ones instead.
__________________
Ted Chang, VAF #681
RV-9A #91048, flying since 8/2006. 2,050 hrs.
2018 Due paid
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07-16-2012, 05:55 AM
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Join Date: Jul 2010
Location: Novi, MI & Venice, FL
Posts: 66
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Read some of Mike Busch's columns. He's a regular contributor to Sport Aviation. Also has a web site, SavvyAviator or something like that. I once read that if you have symmetry, which your valves look like, then you'll typically go another 100 hours without valve failure.
The video from this camera looks pretty good. Maybe we could get a group buy on the cams.
__________________
Rich Bond
Just a wishful observer
Gave up awaiting AOPA/EAA exemption request
2015 =VAF= Contributor
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07-16-2012, 08:10 AM
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Join Date: Mar 2005
Location: SE Florida
Posts: 1,499
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Quote:
Originally Posted by tc1234c
Erich,
I got OC-03B that is the same as yours, I believe. Yes, I cut the case using a hand saw. It quite easy to do. I don't have big heat shrink so I just used tape. It works well. Thanks for sharing the information.
Ted
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Ted,
I just did a Google search on OC-03B dental camera and came up with nothing. I did find a listing for a ZD-03 [linked below].
http://factory.dhgate.com/dental-equ...p36909791.html
Could you please supply who manufactures this thing and perhaps a photo or link of it?
Charlie
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