VansAirForceForums  
Home > VansAirForceForums

- POSTING RULES
- Donate yearly (please).
- Advertise in here!

- Today's Posts | Insert Pics


Go Back   VAF Forums > Main > RV General Discussion/News
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
  #71  
Old 12-21-2011, 08:29 AM
mtnflyer mtnflyer is offline
 
Join Date: Jul 2007
Location: granby co
Posts: 180
Default Green instructor and a ride in a 4

While chasing parts at Redding Ca and a CFI in the back seat, along for the ride one spring morning. We took off and headed south at tree top level, following the river. The young man looked up ahead at the 180 degree turn in this river and said, "ain't no way you can make that turn". He ate those words for lunch and a month later owned his own RV4
Reply With Quote
  #72  
Old 12-21-2011, 09:08 AM
bkthomps bkthomps is offline
 
Join Date: Jan 2010
Location: Destin
Posts: 1,543
Default

Quote:
Originally Posted by Vlad View Post
In tight spot over a river between Bravos, I never fly fast

LGA; N666BK what kind of experimental are you?

me; Vans Aircraft ... 6BK...

LGA; Are you a jet..... or prop....?

me; prop...

LGA; ok proceed as requested. What's your maximum speed?

me; .....200
you're quoting 200kt maximum speeds? I don't think they're asking for Vne
Reply With Quote
  #73  
Old 12-21-2011, 10:26 AM
Pilottonny Pilottonny is offline
 
Join Date: Jan 2006
Location: Belgium
Posts: 645
Question Shock cooling?

Quote:
Originally Posted by Jamie View Post
Indeed. I have been 180kts TAS on downwind abeam the departure end at my home field and landed with no problem at all with close in base to final turn.
When I am faster than something like 120 kts, entering the pattern, I will not be able to slow down to 60 kts on final, without the Dynon EMS shouting "shock cooling" at me! How do you guys do that, just close the throtle and forget about your cylinders?

Regards, Tonny.
__________________
"Pilottonny"
Tonny Tromp
Lanaken, Belgium (EU)
RV9A, Registration: PH-VAN
ECI-Titan IOX-320 with dual EI, turning a Whirlwind 200RV CS prop.
Sold
Reply With Quote
  #74  
Old 12-21-2011, 10:39 AM
Bavafa Bavafa is offline
 
Join Date: Oct 2007
Location: Sacramento, CA
Posts: 3,351
Default

Just a few days ago heading back to my home airport, I made my call 8 miles out for runway 23 and there was another Diamond who made the same call for 8 miles out and we were agreed I go first.

When I made my call ?clear 23? he was still on his 45.
__________________
Mehrdad
N825SM RV7A - IO360M1B - SOLD
N825MS RV14A - IO390 - Flying
Dues paid
Reply With Quote
  #75  
Old 12-21-2011, 10:44 AM
N355DW's Avatar
N355DW N355DW is offline
 
Join Date: Oct 2011
Location: Port St Lucie, FL
Posts: 261
Default

Quote:
Originally Posted by Pilottonny View Post
When I am faster than something like 120 kts, entering the pattern, I will not be able to slow down to 60 kts on final, without the Dynon EMS shouting "shock cooling" at me! How do you guys do that, just close the throtle and forget about your cylinders?

Regards, Tonny.

I personally think the fear of shock cooling a normally aspirated Lycoming engine is a little overblown. I'm not an engine tech or expert by any means, just basing this on my own personal experience, so take it for what it's worth. Although I will say all the mechanics in aerobatics I have known have never seemed to think it was an issue.


I have probably 1500 or more hours with higher compression Lycoming engines, maybe 300 or 400 of those hours actually flying aerobatics where I routinely went from full power to full idle quite a few times every flight. I've never cracked a cylinder. In all the eighteen years with the IAC I personally am unaware of anyone ever having a problem with shock cooling. It may have happened, but it's extremely rare if it does.
Yes, we tear up bearings regularly and sometimes and crack or even break crankshafts, but in my experience our cylinders seem to hold up to far more abuse than they would ever get in most RV's in a lifetime.

I think turbocharged engines are the ones to watch with shock cooling. And maybe Continentals, never have seen one of those in a serious acro mount!

Again, I am certainly no expert, but I have seen these engines abused routinely. Done it myself! They are amazingly tough.
Reply With Quote
  #76  
Old 12-21-2011, 03:22 PM
Doug Rohrer Doug Rohrer is offline
 
Join Date: May 2009
Location: Bowling Green, KY
Posts: 294
Smile Fast Flight Home

After Oshkosh 2010, my wife wanted to visit Macinaw Island, so we flew up the western shore of Lake Michigan and landed at St. Ignace in the UP where we stayed a couple of days. We left at 7:30AM Central Time and flew directly south through Michigan with a good tailwind. We stopped at Marshall in sothern MI for fuel and potty break. Took off south and had to detour into Ohio to avoid incoming storms from the west over Ft. Wayne, IN. I was seeing 220 kts on the GPS! We then turned southwest and landed at home in Bowling Green, KY, refuled the plane, wiped off the bugs and pushed it into the hanger. Then went across the street for lunch. We were sitting at our table at 12:30 PM Central! Probably 825 miles and a fuel stop in less than five hours! We love our RV-9A!
Reply With Quote
  #77  
Old 12-22-2011, 08:43 PM
Bud K's Avatar
Bud K Bud K is offline
 
Join Date: Jan 2008
Location: Shell Knob, MO
Posts: 119
Default Got to get me one of those!

Love the stories. Still planning but these are certainly motivational!
__________________
Bud K
N682TT RV-7
Legal Eagle - Flying
FFR Roadster (sold)
Reply With Quote
  #78  
Old 12-23-2011, 12:19 AM
DakotaHawk's Avatar
DakotaHawk DakotaHawk is offline
 
Join Date: Oct 2008
Location: Arlington, WA
Posts: 799
Default

I took a family of four for a demo flight today (not all at the same time, of course!) Mom wanted the smooth air, straight and level flight to look at the snow-tipped mountains. Dad wanted to feel stalls and get a little stick time. Two daughters, ages 14 and 20, wanted to do loops and rolls.

As we finished our various flights and began the descent back to the airport from about 6000' down to pattern altitude of 1200', we were travelling at about 2300rpm / 18" at about 150 mph straight and level. Beginning the descent, I left power alone and pushed the nose over for about a 1000FPM descent. Pointing out the Airspeed, we watched it climb from 150 mph to 200 mph without touching the throttle! The Dynon showed that we were getting about 31 mpg!
__________________
_______________________________
Scott "Grumpy" Stewart
RV-7 N957RV (First Flight on Dec 18, 2009)
RV-14 N144P (Empennage complete, wings almost complete, fuselage almost complete)
#866 on the Van's RV-7 hobbs
#6563 on Van's generic hobbs
Arlington, WA
Reply With Quote
  #79  
Old 12-23-2011, 08:04 AM
DonFromTX's Avatar
DonFromTX DonFromTX is offline
 
Join Date: Oct 2010
Location: La Feria Texas
Posts: 3,822
Default

I expect some interesting conversations when I start flying my Experimental. Model of aircraft is: "Air Force 1", serial number is AF1, paint job is air force one.
__________________
A&P, PP-SEL, Pathological Flier, EAA Technical Counselor
EAA Chapter 595 President,http://www.595.eaachapter.org/index.htm
Retired US Army Officer
Reply With Quote
  #80  
Old 12-23-2011, 11:49 AM
Greg Arehart's Avatar
Greg Arehart Greg Arehart is offline
 
Join Date: Jul 2007
Location: Delta, CO/Atlin, BC
Posts: 2,391
Default

Don, you will have to post some of those conversations here! Looking forward to a few laughs.

greg
__________________
Greg Arehart
RV-9B (Big tires) Tipup @AJZ or CYSQ
N 7965A
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 07:01 AM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.