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Old 02-22-2021, 01:32 PM
rightrudder rightrudder is offline
Join Date: Mar 2014
Location: Laguna Hills, CA
Posts: 1,837

White tire crayon reference mark for valve stem alignment. But I make sure that both inside and outside sidewalls of tire are marked...that way, when I'm rolling the plane fore/aft by tugging on the prop, I can easily see those inside marks.

And yes, I take all precautions when I move the aircraft by the prop!!
RV-9A "slider"
Flew to Osh in 2017, 2018 & 2019!
Tail number N427DK
Donation made for 2021
You haven't seen a tree until you've seen its shadow from the sky -- Amelia Earhart
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Old 02-22-2021, 02:25 PM
Kent Ashton Kent Ashton is offline
Join Date: May 2010
Location: Concord, NC
Posts: 131

tire marks using a small template
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Old 02-23-2021, 10:17 AM
Iluke Iluke is offline
Join Date: Jun 2011
Location: Hope Valley, Rhode Island
Posts: 145
Default tire pressure?

I know this is a dumb question, but what tire pressure do you guys run?
Ivan Luke
Hope Valley, RI
Almost ready to move to the airport!
2021 dues paid
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Old 02-23-2021, 10:40 AM
Bud K's Avatar
Bud K Bud K is offline
Join Date: Jan 2008
Location: Shell Knob, MO
Posts: 132
Default What type of borescope is that?

David, I've been looking for a borescope to replace my old dental camera. What type of borescope do you use? And the WiFi box?
Bud K
N682TT RV-7
Legal Eagle - Flying
FFR Roadster (sold)
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Old 02-23-2021, 11:47 AM
HFS HFS is offline
Join Date: Aug 2009
Location: Lemoore, CA
Posts: 313
Default Type Borescope

I'm using something called "EndoSnake" - primarily made for gun smithing work.

It is completely self contained and relies on getting an "app" for your smart phone for the interface.

Plenty easy to use - even for a dinosaur like me!

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Old 02-23-2021, 12:37 PM
Roadjunkie1's Avatar
Roadjunkie1 Roadjunkie1 is offline
Join Date: Jun 2017
Location: Erie, Colorado
Posts: 91
Default Tire pressure

Originally Posted by Iluke View Post
I know this is a dumb question, but what tire pressure do you guys run?
Not a dumb question, just off-topic. It's actually a very pertinent question.

I think a lot of it is experimentation but a good start is, in the R-4, main gear: 35 psi. That is a good starting point but can be adjusted up and down depending on mission weight, OAT, runway conditions, propensity for the gear to vibrate, etc. I found changing the pressure made a difference in gear vibration. Going out to a turf runway: 30 or so. I wouldn't go much less than that. I believe you have a -7 about ready to go. Experiment once you get her up in the Test Flight Card numbers..... Think about 35 but that is likely open to debate.........

Rear gear: zero. Solid tire.....
RV-4 2860
1946 C-90 J-3 Cub
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Old 02-23-2021, 08:53 PM
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rv6n6r rv6n6r is offline
Join Date: May 2007
Location: Gearhart Oregon
Posts: 297

Originally Posted by Bill Boyd View Post
Lecture me if I need it, but it wasn't long into my RV ownership that I simply left off the valve stem cap. There, I said it
I've been tempted to do this but remember that the cap on these tires has an O-ring that can provide some redundancy in the case of a valve stem core failure. Yes it's unlikely, but I also remember it happening to a friend when we were traveling in Canada in our RV-6s, when he landed at one air-carrier airport and had a sudden-ish stoppage on the runway due to a flat. It was subsequently determined to be a valve core failure, and a loose cap. No damage but he wound up blocking the runway with airliners waiting to land. Just something I think about whenever I mess with the cap! Personally I just use a nut driver; it fits okay through the hole in the wheel pant, a little fussy sometimes but works okay.
Randall Henderson
RV-6 / O-360 / CS, 1500+ hrs, 1st flight Sept. 1999
Outstanding Workmanship OSH 2000
Airport committee chair & ASNV for Seaside, OR Municipal (56S),
Donated August 2020
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Old 02-23-2021, 09:11 PM
NewbRVator NewbRVator is offline
Join Date: Jul 2018
Location: CA
Posts: 261

Originally Posted by Kent Ashton View Post
tire marks using a small template
I like that a lot. My problem is my marks get hard to read in short order.
20 dues paid member since 2018
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Old 02-23-2021, 09:37 PM
NYTOM NYTOM is offline
Join Date: Jun 2005
Location: Raleigh, North Carolina
Posts: 1,150
Default Borescope / Endoscopy

Since your talking about them. Iíve been seeing ads on FB from a company called Diyzit for their duel lens Endoscopy. Self contained with 4 1/2Ē screen. No WiFi to phone. I have the WiFi type now and itís a pain. Image jumps and you need the mirror attachment to see the valves in the engine. And sometimes the WiFi looses connection or has trouble connecting at all. Well anyway, if you search Ebay you can get the exact same unit as the Diyzit model only direct from the factory in China and a lot cheaper at about 40 to 50 bucks. Havenít received it yet but Iíll give a review when it comes in. Those things are really handy in more areas than just the cylinders.
Tom Norwood
Classic "Short Tail 6A N822PM
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