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-   -   Join the flight levels club (https://vansairforce.net/community/showthread.php?t=167308)

Captain_John 01-05-2019 05:22 AM

Quote:

Originally Posted by TS Flightlines (Post 1313979)
whats the highest altitude of an RV?

Just asking--
Tom

Tom, I seem to recall this article being printed in the EAA magazine about this guy but I couldn't find it in the archives. I did locate this story about it though. Looks like 26,900 feet was his maximum alatitude according to the article.

http://survincity.com/2015/09/27-000-feet-in-an-rv-7/

:) CJ

Captain_John 01-05-2019 05:34 AM

Quote:

Originally Posted by BCP Boys (Post 1313963)
I also struggle with finding a good place to refill the tanks. Maybe we can extend the threat to best way to refill the tanks

Refill the tanks yourself. They sell trans fill adapters and all you need to do is buy the oxygen in bulk.

Check out this article about using welders oxygen. Oxygen is oxygen he says and that's what we have been using. I'm not dead yet.

https://www.avweb.com/news/pelican/182079-1.html

I have the mountain high 02 D2 system and I love it. I use very little oxygen And it works very well.

:rolleyes: CJ

Snowflake 01-05-2019 09:45 AM

Quote:

Originally Posted by TS Flightlines (Post 1313979)
whats the highest altitude of an RV?

Well, if you accept that all RV's are "modified" to some extent, then a "modified" RV-4 made it to 47,530.

https://en.wikipedia.org/wiki/Bohannon_B-1
https://airandspace.si.edu/support/w...bruce-bohannon

airguy 01-05-2019 01:46 PM

Quote:

Originally Posted by Captain_John (Post 1314227)
Refill the tanks yourself. They sell trans fill adapters and all you need to do is buy the oxygen in bulk.

Check out this article about using welders oxygen. Oxygen is oxygen he says and that's what we have been using. I'm not dead yet.

https://www.avweb.com/news/pelican/182079-1.html

I have the mountain high 02 D2 system and I love it. I use very little oxygen And it works very well.

:rolleyes: CJ

I've got about 200 hours in my RV sucking oxygen, and refill my own tanks.

smokyray 01-06-2019 01:06 PM

Breezy....
 
Quote:

Originally Posted by airguy (Post 1313026)
Since we've got the "200 knots" club and it's been around for a while, I thought we should have this one as well. I know quite a few of us have been up there with our RV's, and a couple of us have gone WAY up there.

Anyway, here's my entry, coming back home from Reno 2018, was picking up a trace of ice in the top of a layer at 17,000 so requested FL190 to get clear.

Greg,
Many moons ago I nursed my 150HP, wood propped, non painted, built for under $20K RV4 with flea market steam gauges and ECO Trex Hiking GPS to 20K. Darn near froze to death, heaters weren’t a big priority in FL. :). Heaters are overrated anyway



Your winds were light at 190. Here’s what the winds were descending today near Chicago at FL300...not in an RV.
Would be a LONG day in an RV headed West..:)

V/R
Smokey

skylor 01-06-2019 01:26 PM

Pressure or Density Altitude
 
Quote:

Originally Posted by BobTurner (Post 1313940)
While it may seem logical, this is false. An engine?s power depends on how much O2 enters the cylinders. The human body also depends on getting sufficient O2, but it needs to cross a membrane in the lung, and that depends on (partial) pressure.
This is one area where the FARs got it right - ?cabin pressure altitude?, not density altitude, is what?s important.

You have it correct! Also, pulmonary oxygen level is not significantly impacted by air temperature because respirated air is pretty much warmed or cooled to constant temperature (body temperature) by the time it reaches the alveoli.

Skylor

airguy 01-06-2019 07:54 PM

Quote:

Originally Posted by smokyray (Post 1314578)
Greg,
Many moons ago I nursed my 150HP, wood propped, non painted, built for under $20K RV4 with flea market steam gauges and ECO Trex Hiking GPS to 20K. Darn near froze to death, heaters weren?t a big priority in FL. :). Heaters are overrated anyway

Your winds were light at 190. Here?s what the winds were descending today near Chicago at FL300...not in an RV.
Would be a LONG day in an RV headed West..:)

V/R
Smokey

Nicely done. As posted, I wasn't motivated by the winds, but rather to escape trace-to-light icing conditions in the top of a layer. Secondary to that was the need/desire to fill in some data in my econ-cruise spreadsheet for 21k DA conditions.

BruceEicher 02-14-2019 12:00 AM

Another potential member
 
It was so cold my fingers and brain missed the altimeter adjustment by .01. Hope this and the dirty screen is forgiven.
Flying home from Arizona last weekend.
I should have also turned into the wind, slowed to approach speed and flew backwards, but I was too cold so I pushed on and around the weather. You can see my deviation from the flight plan to avoid further weather.

airguy 02-14-2019 07:36 AM

It can get cold up there for sure, and our RV heaters are not known to be all that good. I bought one of those 12-volt heated jacket liners a while back that the motorcycle and snowmobilers use and wore that under my regular jacket for the recent trip KMDD-KHOT, at 17,000 the OAT was variable between +12 and +8 F and after about 20 minutes the cold started to soak into me pretty good. I plugged in the jacket and turned it on and it nearly roasted me on high, I kicked it down to the lowest setting and it was right on target, that made it completely comfortable.

Dugaru 02-14-2019 02:57 PM

Also happy with the Mountain High O2D2
 
+1. It's a tremendous gadget, really cuts down on the O2 usage. Looks like they recently introduced an improved model, as well.

I was pondering getting my own setup to fill O2 tanks but discovered that my local scuba guy (been buying stuff from him for years....) will fill my cylinder for $10. And with the O2D2 a cylinder lasts a loooong time. So I just go the scuba route.

Quote:

Originally Posted by Captain_John (Post 1314227)
I have the mountain high 02 D2 system and I love it. I use very little oxygen And it works very well.



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