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  #31  
Old 01-05-2019, 06:22 AM
Captain_John's Avatar
Captain_John Captain_John is offline
 
Join Date: Jan 2005
Location: KPYM
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Quote:
Originally Posted by TS Flightlines View Post
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
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  #32  
Old 01-05-2019, 06:34 AM
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Captain_John Captain_John is offline
 
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Quote:
Originally Posted by BCP Boys View Post
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.

CJ
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  #33  
Old 01-05-2019, 10:45 AM
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Snowflake Snowflake is online now
 
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Location: Sidney, BC, Canada
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Quote:
Originally Posted by TS Flightlines View Post
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
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  #34  
Old 01-05-2019, 02:46 PM
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airguy airguy is offline
 
Join Date: Oct 2006
Location: Garden City, Tx
Posts: 5,590
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Quote:
Originally Posted by Captain_John View Post
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.

CJ
I've got about 200 hours in my RV sucking oxygen, and refill my own tanks.
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Greg Niehues - SEL, IFR, Repairman Cert.
Garden City, TX VAF 2021 dues paid
N16GN flying 900 hrs and counting; IO360, SDS, WWRV200, Dynon HDX, IFD440, G5
Built an off-plan RV9A with too much fuel and too much HP. Should drop dead any minute now.
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  #35  
Old 01-06-2019, 02:06 PM
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smokyray smokyray is offline
 
Join Date: Jan 2005
Location: TX32
Posts: 1,965
Default Breezy....

Quote:
Originally Posted by airguy View Post
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

Last edited by smokyray : 01-06-2019 at 02:20 PM.
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  #36  
Old 01-06-2019, 02:26 PM
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skylor skylor is offline
 
Join Date: Aug 2009
Location: Southern California
Posts: 1,022
Default Pressure or Density Altitude

Quote:
Originally Posted by BobTurner View Post
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
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  #37  
Old 01-06-2019, 08:54 PM
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airguy airguy is offline
 
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Quote:
Originally Posted by smokyray View Post
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.
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Greg Niehues - SEL, IFR, Repairman Cert.
Garden City, TX VAF 2021 dues paid
N16GN flying 900 hrs and counting; IO360, SDS, WWRV200, Dynon HDX, IFD440, G5
Built an off-plan RV9A with too much fuel and too much HP. Should drop dead any minute now.
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  #38  
Old 02-14-2019, 01:00 AM
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BruceEicher BruceEicher is offline
 
Join Date: Feb 2012
Location: Wilsonville/Aurora KUAO Oregon
Posts: 760
Default 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.
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Last edited by BruceEicher : 02-14-2019 at 01:02 AM.
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  #39  
Old 02-14-2019, 08:36 AM
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airguy airguy is offline
 
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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.
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Greg Niehues - SEL, IFR, Repairman Cert.
Garden City, TX VAF 2021 dues paid
N16GN flying 900 hrs and counting; IO360, SDS, WWRV200, Dynon HDX, IFD440, G5
Built an off-plan RV9A with too much fuel and too much HP. Should drop dead any minute now.
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  #40  
Old 02-14-2019, 03:57 PM
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Dugaru Dugaru is offline
 
Join Date: Jan 2016
Location: Richmond VA, USA
Posts: 595
Default 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 View Post
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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