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01-02-2011, 08:45 AM
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Join Date: Apr 2007
Location: phx
Posts: 61
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speed brakes are very nice when you are running a turbo. Open the waste gate @ 11500 leave throtle wide open and nose it over @ 2000 fpm no pitch change 180 ktas no speed increase lower alt like 8500,I can do 3000 fpm no problem full power open wastegate
turbo-normalized 9.5:1 is no sweat. Intercooler lowers the intake temp to prevent detonation. Its only when you get up to 38-39' map its going to be a problem. but not at 100 LL fuel and there is alot of peoble saying this and that but really this is very safe. I can run this thing 110 % power at 11500 alt and 2300 rpm and 14.7 gph very easy. come and se for your self
doug what is "t/o mp" sorry cant ansver if i dont now what it is
the hottest i have seen on a 24 celcius day was a climp from 3500 alt to 11500 alt 32' mp @ 1500 fpm cht was on # 3. 406. F and oil was 220 F and as soon as i level of it fell to 197 F and cht was 368. F
heres a picture of my oil scavenge pump and oilpan

__________________
Mike Poulsen
Phoenix
RV 6 TURBO
N 694 MP
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01-02-2011, 10:26 AM
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Join Date: Nov 2005
Location: Flagstaff, AZ
Posts: 447
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Impressive!
Quote:
Originally Posted by mike in phx
the hottest i have seen on a 24 celcius day was a climp from 3500 alt to 11500 alt 32' mp @ 1500 fpm cht was on # 3. 406. F and oil was 220 F and as soon as i level of it fell to 197 F and cht was 368. F
heres a picture of my oil scavenge pump and oilpan
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Now this puts the E (IN BOLD) in Experimental. All the oil lines look like a snake pit! I would expect higher Temps with the power output you are now getting. Your cooling plenum is successfull also. Great job!
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01-02-2011, 11:17 AM
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Join Date: Jan 2005
Location: SC
Posts: 12,887
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Quote:
Originally Posted by mike in phx
...heres a picture of my ...oilpan

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That is some VERY nice machine work! Careful as you will get others who want one. (Like me!)
__________________
Bill R.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC
www.repucci.com/bill/baf.html
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01-02-2011, 11:26 AM
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Join Date: Jan 2005
Location: Sherwood, Oregon
Posts: 981
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Cowling?
I would love to see a photo of the lower cowling because it looks like it would need modification. Great looking install tho!!!
.
__________________
Jerry Cochran
Sherwood, Oregon
RV-7a 707DD Bot from David Domeier 12/01/11
Lycoming IO-360 Catto 3 blade Panel upgrade in progress
RV6a 18XP 1st flite 03/21/07 sold to Dale Walter 10/22/2011
Superior IO-360, Hartzell Blended, GRT/Dynon
Happily "autopaying" DR
"Suppose you were an idiot, and suppose you were a member of Congress; but I repeat myself."
Mark Twain
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01-02-2011, 07:02 PM
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Join Date: Jan 2005
Location: Twin Cities, MN
Posts: 1,565
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This certainly looks cool!
Question: What is the Vne of your aircraft?
__________________
Brad Benson, Maplewood MN.
RV-6A N164BL, Flying since Nov 2012!
If you're not making mistakes, you're probably not making anything
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01-02-2011, 08:46 PM
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Join Date: Dec 2006
Location: Arroyo Grande, CA
Posts: 938
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Oil pan cooling
I'd like to add some suggestions for using the oil pan with cooling fins to aid oil cooling. First, to be really efficient, you need to place a sheet of metal over the ends of the fins to form a plenum to keep the air in close contact with the fins. Second, you need to feed this plenum with outside air, not the hot air off the cylinders. Third, long fins build up a boundary layer which inhibits heat transfer from the fins to the air. This can be overcome by making the fins wavy rather than straight, or making the fin surface very rough to promote turbulence and scrubbing-off of the boundary layer, as smooth fins result in lowered heat transfer. 'For what it's worth!
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01-03-2011, 01:07 AM
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Join Date: Dec 2009
Location: Phoenix, AZ
Posts: 30
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Quote:
Originally Posted by mike in phx
It sure is nice to have a forum like this to get some info. If anyone would like to try what it's like to fly a turbo RV-6, feel free to let me know...I'm always up for flying.
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Mike if you are up for some flying please let me know. I would really like to see your setup. I'm in the process of finishing up a RV7 and would like to get some input from you on turbo.
I'm based at DVT as well and will treat for the fuel and pancakes whenever you have the time.
__________________
Jerry Green
Air Show Communication Consultant
RV7 Project 91.23% complete
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01-03-2011, 02:19 AM
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Join Date: Apr 2007
Location: phx
Posts: 61
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Quote:
Originally Posted by ChiefPilot
This certainly looks cool!
Question: What is the Vne of your aircraft?
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Hi the Vne would be the same as on Bob Axsom's RV 6 A and your own RV 6 A
I hope that answers your question and thanks for the compliment
Quote:
Originally Posted by elippse
I'd like to add some suggestions for using the oil pan with cooling fins to aid oil cooling. First, to be really efficient, you need to place a sheet of metal over the ends of the fins to form a plenum to keep the air in close contact with the fins. Second, you need to feed this plenum with outside air, not the hot air off the cylinders. Third, long fins build up a boundary layer which inhibits heat transfer from the fins to the air. This can be overcome by making the fins wavy rather than straight, or making the fin surface very rough to promote turbulence and scrubbing-off of the boundary layer, as smooth fins result in lowered heat transfer. 'For what it's worth!
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Heres a deal of a life time.
If that is what you want for you system. Ill be happy making that for you, it adds to the price just so you know.
I just needed the stiffnes and strengh to hang a turbo from it with out the extra lbs.
Its a good idea and maybe worth looking in to.
Thanks for the input
for the other question about cowling i think i have enough room in a stock cowl. Maybe open it up just a litle bit. Mine was big to begin with, Ill post some pics later
if you want to ride in it. Im at dvt just send a pm and we can set it up.
Thanks to all of you for the nice compliments it makes all the work worth it
__________________
Mike Poulsen
Phoenix
RV 6 TURBO
N 694 MP
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01-03-2011, 05:18 AM
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Join Date: Jan 2005
Location: Louisville, Ga
Posts: 7,840
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Very, very nice work!
FYI: to/mp= takeoff power/manifold pressure
Best,
__________________
Pierre Smith
RV-10, 510 TT
RV6A (Sojourner) 180 HP, Catto 3 Bl (502Hrs), gone...and already missed
Air Tractor AT 502B PT 6-15 Sold
Air Tractor 402 PT-6-20 Sold
EAA Flight Advisor/CFI/Tech Counselor
Louisville, Ga
It's never skill or craftsmanship that completes airplanes, it's the will to do so,
Patrick Kenny, EAA 275132
Dues gladly paid!
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01-03-2011, 05:49 AM
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Join Date: Apr 2007
Location: phx
Posts: 61
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aaahhh t/o mp
Thanks pierre I dont always get the short for
but T/O MP is what pilot wants. I dont go over 33" MP.
It can be made for higher MP.
At 33' your stepping on that ruder to keep the ball in center
__________________
Mike Poulsen
Phoenix
RV 6 TURBO
N 694 MP
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