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01-05-2013, 09:35 AM
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Join Date: Mar 2006
Location: Newport, TN
Posts: 7,496
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This one looks OK for a cheap model..
$37.89 at Amazon clearing house...
http://www.amazon.com/Flexible-Inspe.../dp/B007ROP3FO
Most of the reviews seem to suggest it might work OK for our use.
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01-05-2013, 09:52 AM
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Senior Curmudgeon
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Join Date: Sep 2005
Location: Dayton Airpark, NV A34
Posts: 15,420
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Quote:
Originally Posted by N427EF
I am still hoping to find out what made you pull the cylinder or did I miss it.
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You missed it. Post 29.
__________________
Mike Starkey
VAF 909
Rv-10, N210LM.
Flying as of 12/4/2010
Phase 1 done, 2/4/2011 
Sold after 240+ wonderful hours of flight.
"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
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01-07-2013, 12:49 PM
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Join Date: Jun 2006
Location: Roanoke, Texas
Posts: 76
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Dry lifter valve clearances
I've seen this on several low time kit engines and it was most likely caused by really tight valve to rocker clearances holding the valve open at higher rpm causing it to burn over time. I've found several to measure less than .020 dry.
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Randy Richmond
A&P, IA, Private Pilot
RV Builder
Owner:Richmond Aircraft Service
11563 Airway Blvd.
Roanoke, TX 76262
(52F)
817-401-809six
Inspections, Prebuys, Builder assistance,
Damage Repairs, Ferry Services
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01-07-2013, 12:56 PM
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Join Date: Dec 2006
Location: Newnan, GA
Posts: 317
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Check this video from Ted Chang that posts on here..
http://www.youtube.com/watch?v=Dq0H_...e_9ZIKIKKJpZqg
Quote:
Originally Posted by scard
Since we've slid into talking about borescopes, my first 'cheap' try is a fail.
http://www.amazon.com/Sewell-IntraOr...ra+oral+camera
The focal length is way too short. Now that I have it, it says that the focal length is 1cm~3cm. It is really exactly 1cm which I find just doesn't work in the cylinder even though the head does actually fit in the sparkplug hole without modification. Time for the next try...
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__________________
Brian Kilby
flying RV-6A, previously flying RV-9A
based at KCTJ, Carrollton, GA
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01-07-2013, 03:54 PM
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Join Date: May 2008
Location: Brisbane Qld. Aust.
Posts: 2,271
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These work well, no bits to fall off inside your cylinder
Skinny so you can wiggle it around. Size DOES matter.
http://www.ebay.com/itm/ws/eBayISAPI...m=260919713262
Here is a sample.

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______________________________
David Brown
DYNON Authorised Dealer and Installer
The two best investments you can make, by any financial test, an EMS and APS!
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01-07-2013, 04:10 PM
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Join Date: Jan 2006
Posts: 307
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camera
great video is this taken from the same dental style camera or something different.
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01-07-2013, 05:40 PM
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Join Date: Jun 2006
Location: 8I3
Posts: 3,564
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Quote:
Originally Posted by Monkey
I've seen this on several low time kit engines and it was most likely caused by really tight valve to rocker clearances holding the valve open at higher rpm causing it to burn over time. I've found several to measure less than .020 dry.
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.028 is the bottom limit. I don't think a valve could stretch far enough or seats to wear to take up that much difference, assuming the engine was put together right at the bottom limit.
__________________
Please don't PM me! Email only!
Bob Japundza CFI A&PIA
N9187P PA-24-260B Comanche, flying
N678X F1 Rocket, under const.
N244BJ RV-6 "victim of SNF tornado" 1200+ hrs, rebuilding
N8155F C150 flying
N7925P PA-24-250 Comanche, restoring
Not a thing I own is stock.
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01-08-2013, 02:28 AM
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Join Date: Feb 2006
Location: Sydney, Australia
Posts: 251
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Check pushrod lengths
Quote:
Originally Posted by Monkey
I've seen this on several low time kit engines and it was most likely caused by really tight valve to rocker clearances holding the valve open at higher rpm causing it to burn over time. I've found several to measure less than .020 dry.
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Randy makes a good point. I recently replaced the ECI group B cylinders on my Mattituck engine. When we checked the dry tappet clearances I needed to swap the pushrods from -30 to -34. The engine shop thought that was quite unusual as an O-360 normally takes -34 to -36.
Granted that is a larger push rod, so not necessarily the problem described but if you have not checked them since changing cylinders I would definitely suggest that you do.
Cheers
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Richard Talbot
RV-7A
Sydney, Australia
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01-12-2013, 03:20 PM
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Join Date: May 2010
Location: Denver
Posts: 564
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Quote:
Originally Posted by RV10inOz
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David,
The eBay site for this camera indicates it will focus to infinity. Is that your experience? I have already tried two of the dental cameras, and neither will focus beyond 3 cm.
Jim Berry
RV-10
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01-12-2013, 05:48 PM
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Join Date: May 2008
Location: Brisbane Qld. Aust.
Posts: 2,271
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Jim, I have not tried the focal length out at all.
I was after it for its skinny shaft diameter. Not used it enough yet to see what the limits are.
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______________________________
David Brown
DYNON Authorised Dealer and Installer
The two best investments you can make, by any financial test, an EMS and APS!
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