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04-13-2011, 04:36 AM
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Join Date: Jan 2005
Location: Louisville, Ga
Posts: 7,840
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Probably...
Quote:
Originally Posted by Bruce
Rocket,
..........Can I get more speed pulling the prop back to 2600.
I hope Bob A doesn't see this post 
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I asked Alan Barrett if I could leave my engine wide open for 45 minutes, during a XC race last year. He remarked that I could run WOT for the life of the engine!
That said, he pointed out, "You might wanna try something less than 2700 RPM for a bit more "bite" from the prop." So I did and discovered 2 more MPH at 2640, according to my D-100 TAS. Went from 209 MPH TAS to 211.
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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04-13-2011, 08:20 AM
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Join Date: Feb 2007
Location: colorado
Posts: 873
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rockets on video at race
Betty Meyer of the Alabama Aviator site, took some video at a race in 2009 and it has some nice shots of the racing rockets. That 550 sounds REALLY good. There is a youtube of Wayne's rocket making the speed dash too. Not the best video but it sure sounds good.
http://www.alabamaaviator.com/index.asp?record_no=16794
click on video link farther down the page
search Tennessee Valley Speed Dash on youtube for the other video.
CM
Last edited by Christopher Murphy : 04-13-2011 at 08:21 AM.
Reason: addition
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04-13-2011, 09:37 AM
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Join Date: Nov 2007
Location: Reno, NV
Posts: 2,125
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Fun thread...and see, go skiing one day and then fly with buds and build wooden RV formation models the next day, and ya miss a lot here on VAF!
Quote:
Originally Posted by F1Boss
First, call Rhonda at Barrett Engines and get one of her cold air systems, then call Don at Airflow and get an FM300 fuel controller....all up, about $8K, or 8 aircraft financial units. Piece o cake!
Mark
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Roger all...expensive cake...tasty, but expensive! Thanks for the info...maybe between the 2012 and 2103 seasons, eh! (Prop and exit area first!)
Quote:
Originally Posted by pierre smith
...about $2,666 per added knot  $8,000 ? 3 = 2,666
Best,
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Good calcs Pierre...the BA prop is about a grand per knot...hopefully! Saving pennies up now!
Quote:
Originally Posted by F1Boss
Hey Boomer:
Once I caught up to Bob Mills, I pulled back to 2400 turns, but left the GO lever in the corner. Flew the 2nd half of the race in formation. 2600 is probably a good number for this prop, but it sure sounds better at 2750!
Carry on!
Mark
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That post hurts on so many levels, I just can't tell ya!
Quote:
Originally Posted by pat
It looks like the RV has smoke on and is keeping up with the rocket. Were they in the race? please explain a little more about the RV. thanks.
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As mentioned ever so painfully above  , Mark caught me after about 50 miles, now that his beast was breathing well, and his fairings were all staying on  . However, his temps were hi, so we had a great time going around the course, comparing engine readings, listening to position calls, and trying to suck in the Turbo Rocket ahead of us...which we were doing slowly, till he dove for the finish. As we neared the finish, Mark showed me he had been toying with me, and pushed up the throttle to give the finish crowd at Macho Grande a show. I stayed behind him and pedaled as fast as I could go. My guess is it sounded pretty cool on the ground!
Quote:
Originally Posted by Bruce
Thanks Rocket.
Will try that and see if I can get Mach .77
That is no regular RV. Thats Bob Mills SuperSix. Lots of
Smoke Lots of engine and very fast and it looks good too.
He trying to keep up with Rocket.
Can't wait to watch them race again even though I am
about 3 laps behind in Nascar rules 
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Thanks Boomer, right back atcha!
Quote:
Originally Posted by Bob Axsom
This is a snap shot taken at Taylor before the 4-2-11 race. It is important to date the photo because it may look different soon as the mods continue.
Bob Axsom
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Count on that!
Quote:
Originally Posted by pierre smith
I asked Alan Barrett if I could leave my engine wide open for 45 minutes, during a XC race last year. He remarked that I could run WOT for the life of the engine!
That said, he pointed out, "You might wanna try something less than 2700 RPM for a bit more "bite" from the prop." So I did and discovered 2 more MPH at 2640, according to my D-100 TAS. Went from 209 MPH TAS to 211.
Best,
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Guess what the next series of tests will be!  We'll see if the same is true for the D-twist paddle. So far more RPM has been faster, but I skipped from 2500 to 2700. Guess I need to go in smaller increments!
And Pierre, its funny...even though I balanced my prop at 2300 RPM, its smoother at 2700...engine just likes it there (my wallet doesn't, but the fun meter does!)
Those darn Rockets all seem to be getting faster, and at a faster rate. Back into the books and the Tom M, Mark F, Wayne H, Bob A and Dan H study guides!
Cheers,
Bob
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04-13-2011, 10:03 AM
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Join Date: Aug 2006
Location: Taylor Texas
Posts: 813
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More data
Quote:
Originally Posted by pierre smith
I asked Alan Barrett if I could leave my engine wide open for 45 minutes, during a XC race last year. He remarked that I could run WOT for the life of the engine!
That said, he pointed out, "You might wanna try something less than 2700 RPM for a bit more "bite" from the prop." So I did and discovered 2 more MPH at 2640, according to my D-100 TAS. Went from 209 MPH TAS to 211.
Best,
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Hey Pierre:
Which prop are you running?
Thx
Mark
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04-13-2011, 10:40 AM
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Join Date: Nov 2005
Location: tulsa, Oklahoma
Posts: 178
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Quote:
Originally Posted by F1Boss
Hey Pierre:
Which prop are you running?
Thx
Mark
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DON'T TELL HIM! 
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04-13-2011, 10:53 AM
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Join Date: Aug 2006
Location: Taylor Texas
Posts: 813
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Huh?
Quote:
Originally Posted by Allen Barrett
DON'T TELL HIM! 
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Are you takin' orders from your sister again?
Carry on!
Mark
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04-13-2011, 03:06 PM
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Join Date: Nov 2005
Location: tulsa, Oklahoma
Posts: 178
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Quote:
Originally Posted by F1Boss
Are you takin' orders from your sister again?
Carry on!
Mark
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She thinks I listen to her, or something like that! 
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04-13-2011, 04:05 PM
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Join Date: Feb 2005
Location: Chesterfield, Missouri
Posts: 4,514
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Quote:
Originally Posted by Allen Barrett
She thinks I listen to her, or something like that! 
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It's mostly something like that.....
If you buy an engine from BPE, not only do you get a great motor but Allen will throw in a huge greasy hamburger with cheese and fried onions at a place not far from the airport, I think it's Hank Hamburgers, or something like that. Whatever its called, it is a memorable joint.
(The engine is running fine, Allen, no oil leaks which is most unusual for a Lycoming. I have not yet found a fuel pump that is agreeable with E10 fuel but Aero Accessories is working on certification of one.)
This is an interesting thread about speed and more speed.
__________________
RV-12 Build Helper
RV-7A...Sold #70374
The RV-8...Sold #83261
I'm in, dues paid 2019 This place is worth it!
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04-13-2011, 04:48 PM
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Join Date: Mar 2005
Posts: 5,685
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OH ME!
Quote:
Originally Posted by Allen Barrett
DON'T TELL HIM! 
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My competitor Bruce has an expert in his corner? Woe is me.
Bob Axsom
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04-13-2011, 06:25 PM
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Join Date: Oct 2005
Location: 08A
Posts: 9,500
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Quote:
Originally Posted by David-aviator
If you buy an engine from BPE, not only do you get a great motor but Allen will throw in a huge greasy hamburger with cheese and fried onions at a place not far from the airport
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Ha! I got a chicken with purple polka dot panties. Rhonda gave it to me. It was probably Allens's

__________________
Dan Horton
RV-8 SS
Barrett IO-390
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