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Search: Posts Made By: sandifer
Forum: RV-6/6A 08-21-2018, 08:14 AM
Replies: 3
Views: 1,032
Posted By sandifer
I like the idea of the RV event. Regarding spins,...

I like the idea of the RV event. Regarding spins, it's up to the builder how far they take Phase I testing. There's no prohibition from Vans against spinning any of the aerobatic models, side by side...
Forum: RV-6/6A 08-20-2018, 02:09 PM
Replies: 3
Views: 1,032
Posted By sandifer
Do you have an example sequence flown for this RV...

Do you have an example sequence flown for this RV Event? And just curious - what is the issue with RV inverted spins? Is there a UK regulation related to spin testing performed (or not performed) by...
Forum: RV-14 08-08-2018, 04:21 PM
Replies: 15
Views: 1,313
Posted By sandifer
More like removes technique discipline. :D

More like removes technique discipline. :D
Forum: RV-14 08-08-2018, 07:47 AM
Replies: 15
Views: 1,313
Posted By sandifer
Aerobatic planes route the breather all the way...

Aerobatic planes route the breather all the way to the tail so that any dribble will not end up on the belly. Even with a full inverted system, the "slobber pot" will still allow a small amount of...
Forum: RV-14 08-07-2018, 09:19 PM
Replies: 15
Views: 1,313
Posted By sandifer
"Slow rolls" even at RV roll rates are fast...

"Slow rolls" even at RV roll rates are fast enough that an inverted oil ball valve has insufficient time to properly reseat and redirect oil pressure under negative G before the roll is finished, so...
Forum: Traditional Aircraft Engines 06-20-2018, 07:22 PM
Replies: 22
Views: 3,352
Posted By sandifer
Yeah, full throttle applied in conjunction with...

Yeah, full throttle applied in conjunction with the recovery rudder can help stop competition spins more crisply. No need to do this with recreational spins unless you just want to see how your plane...
Forum: RV General Discussion/News 06-05-2018, 07:44 AM
Replies: 16
Views: 1,757
Posted By sandifer
Absolutely Ron! I mentioned that an actual round...

Absolutely Ron! I mentioned that an actual round loop will require more than the 3-3.5G he was pulling, but not to sweat it prior to getting ground critiquing since it's almost pointless to try for...
Forum: RV General Discussion/News 06-04-2018, 04:51 PM
Replies: 16
Views: 1,757
Posted By sandifer
There's a degree of gyroscopic yaw to the right...

There's a degree of gyroscopic yaw to the right any time you pitch toward the canopy in an airplane with a Lycoming turning motor. But the amount of precession of course depends on RPM, prop mass,...
Forum: RV General Discussion/News 06-01-2018, 02:55 PM
Replies: 16
Views: 1,757
Posted By sandifer
Hey Figs, first of all don't worry about making...

Hey Figs, first of all don't worry about making what you think is a round loop. It won't be. :) Never seen anyone come close to an actual round loop who hasn't had a good bit of help from the ground....
Forum: RV General Discussion/News 05-21-2018, 10:19 AM
Replies: 32
Views: 3,664
Posted By sandifer
Dang you guys are whipped. :) I wonder how...

Dang you guys are whipped. :) I wonder how married guys ever came to own Cubs, Champs, and Pitts'. ;) Of course my wife has a horse she rides all the time so she can't complain about what type of...
Forum: RV General Discussion/News 05-21-2018, 07:59 AM
Replies: 23
Views: 3,755
Posted By sandifer
Brian, I think you're confusing what Oliver was...

Brian, I think you're confusing what Oliver was saying. Oliver has fuel injection. There are no figures in Sportsman with long enough negative G duration to require a flop tube (inverted fuel)....
Forum: RV General Discussion/News 05-19-2018, 03:40 PM
Replies: 23
Views: 3,755
Posted By sandifer
How are you sure the nose is dropping too much...

How are you sure the nose is dropping too much inverted? Are you below the pitch attitude required for inverted level flight for your specific airspeed? That pitch attitude should be burned into your...
Forum: RV General Discussion/News 05-10-2018, 12:13 PM
Replies: 10
Views: 1,794
Posted By sandifer
Hey Brian, trust me - the ex fighter jocks have...

Hey Brian, trust me - the ex fighter jocks have ZERO advantage over anyone else. And contests are more fun when you don't have high expectations anyway. It can be a humbling sport. ;) Most fun flight...
Forum: RV General Discussion/News 04-29-2018, 09:20 AM
Replies: 21
Views: 2,638
Posted By sandifer
Jerry has that smooth but assertive and calm...

Jerry has that smooth but assertive and calm flying style that makes competition flights beautiful to watch. Well done Jerry!
Forum: RV General Discussion/News 04-09-2018, 02:07 PM
Replies: 4
Views: 598
Posted By sandifer
Just for anyone else, don't be discouraged by a...

Just for anyone else, don't be discouraged by a lack of other experienced RV competition pilots in your area. Acro is acro, and anyone in this sport can help you, and would be glad to. There's...
Forum: RV Photo/Video URLs 03-30-2018, 10:35 AM
Replies: 17
Views: 2,929
Posted By sandifer
Looking pretty good Karl. I think you can see...

Looking pretty good Karl. I think you can see some little attitude issues here and there. On the wedge, you'll definitely want to accelerate your pitch rate more as you approach the end of the radius...
Forum: RV General Discussion/News 03-23-2018, 10:14 AM
Replies: 33
Views: 3,476
Posted By sandifer
Nah, it's natural to roll a little better and...

Nah, it's natural to roll a little better and more naturally one way vs. the other. Takes some work get them automatic in both directions. There's nothing about torque, slipstream, or gyroscopic...
Forum: RV General Discussion/News 03-15-2018, 03:59 PM
Replies: 19
Views: 2,463
Posted By sandifer
Ron, little clarification - 45 lines are graded...

Ron, little clarification - 45 lines are graded on attitude rather than flight path. Only level lines are graded on flight path.

And the only airplanes that really appear on a 45 attitude when...
Forum: RV General Discussion/News 09-10-2017, 07:40 PM
Replies: 7
Views: 869
Posted By sandifer
Glad you had a good time Dave. Not to hijack the...

Glad you had a good time Dave.

Not to hijack the thread, but since Bill mentioned it, here's Ron and his RV-8 flying the Intermediate Known at Warrenton yesterday -...
Forum: RV General Discussion/News 07-15-2017, 08:22 AM
Replies: 32
Views: 7,994
Posted By sandifer
I don't understand the comparison to Tucker's...

I don't understand the comparison to Tucker's flying. He sees 280mph speeds, +9/-7G, lots of snaps and high speed gyroscopic/shoulder roll maneuvers that twist the **** out of everything on the...
Forum: RV General Discussion/News 07-14-2017, 08:58 AM
Replies: 32
Views: 7,994
Posted By sandifer
If you're already doing acro, why do you feel...

If you're already doing acro, why do you feel competition acro would accelerate your maintenance schedule? One of the widespread misconceptions about the sport is that you must beat the airplane...
Forum: RV General Discussion/News 06-17-2017, 11:54 AM
Replies: 14
Views: 1,771
Posted By sandifer
No, that's not simpler, just way cooler. :) I...

No, that's not simpler, just way cooler. :)

I meant ignoring the tach.
Forum: RV General Discussion/News 06-17-2017, 10:24 AM
Replies: 14
Views: 1,771
Posted By sandifer
Hey Oliver, simplify your life like all us Pitts...

Hey Oliver, simplify your life like all us Pitts S-1 pilots do. :)
Forum: RV General Discussion/News 05-10-2017, 11:56 AM
Replies: 6
Views: 961
Posted By sandifer
ACS still has the #3 B&S reamers and the AN386...

ACS still has the #3 B&S reamers and the AN386 pins for the B&S taper. I used these when I replaced the engine mount on my RV-3 13yrs ago and they worked very well for the gear legs. Reaming the...
Forum: RV General Discussion/News 05-10-2017, 09:29 AM
Replies: 24
Views: 3,615
Posted By sandifer
Yep, same as people asking me when I'm gonna get...

Yep, same as people asking me when I'm gonna get a monoplane. ;)
Forum: RV General Discussion/News 05-09-2017, 03:21 PM
Replies: 24
Views: 3,615
Posted By sandifer
Gash, your points over participation are right...

Gash, your points over participation are right on. Here are the highlights of the feedback I've seen on VAF over the years regarding what holds folks back from getting involved in the sport. There...
Forum: RV-3 05-02-2017, 02:03 PM
Replies: 22
Views: 3,941
Posted By sandifer
I had an RV-3A w/ 125HP O-290G, wood prop of...

I had an RV-3A w/ 125HP O-290G, wood prop of course, no electrical, and J-3 simple panel. Builder listed it as 690 lbs. empty, which included a 15 lb. lead block bolted to the bottom of the engine...
Forum: RV-8/8A 03-31-2017, 12:42 PM
Replies: 12
Views: 3,086
Posted By sandifer
Not required for flying in Primary or Sportsman,...

Not required for flying in Primary or Sportsman, which is most likely where you'd be with the RV. IAC rule below.

2.3(k) Dual seat belts with separate attach points and a shoulder harness are...
Forum: RV-4 02-07-2017, 09:13 PM
Replies: 12
Views: 4,010
Posted By sandifer
That of course depends on the prop pitch you...

That of course depends on the prop pitch you select. Craig can build anything.



That's an interesting observation, and I'm curious how the RV platform would differ so much from my experience and...
Forum: Safety 01-03-2017, 10:17 AM
Replies: 45
Views: 12,196
Posted By sandifer
Yes, there are aircraft that will not recover all...

Yes, there are aircraft that will not recover all spin modes using this 'Finagin' technique. The Yak 52 is another well known example that will not recover a developed flat spin using this technique....
Forum: RV General Discussion/News 12-17-2016, 06:38 AM
Replies: 71
Views: 17,611
Posted By sandifer
You don't need another RVer, just some...

You don't need another RVer, just some experienced folks to help you. The aircraft type doesn't matter. There's a wide range of a/c types that compete, and ground critiquing/judging basics apply to...
Forum: RV General Discussion/News 12-16-2016, 02:39 PM
Replies: 71
Views: 17,611
Posted By sandifer
If you're safe and comfortable doing loops,...

If you're safe and comfortable doing loops, rolls, and spins on your own, I'd suggest ditching the instructor and hooking up with your nearest IACers for some ground coaching/critiquing if you have...
Forum: RV-4 12-13-2016, 04:56 PM
Replies: 6
Views: 3,812
Posted By sandifer
Don't be too concerned about trying to replicate...

Don't be too concerned about trying to replicate your setup. Very basic aerobatic instruction doesn't require the use of inverted systems, and any decent aerobatic instructor will talk to you about...
Forum: RV General Discussion/News 12-05-2016, 09:43 AM
Replies: 27
Views: 7,756
Posted By sandifer
Absolutely right. I sorta side tracked by...

Absolutely right. I sorta side tracked by bringing up the other point, since on occasion folks have a tendency to obsess about using the most efficient technique. I don't think that was happening...
Forum: RV General Discussion/News 12-05-2016, 09:31 AM
Replies: 11
Views: 4,165
Posted By sandifer
Bill, assuming the pilot recognizes a potential...

Bill, assuming the pilot recognizes a potential tail slide developing (not necessarily obvious, depending on experience), I would recommend against pulling power to idle and waiting for something to...
Forum: RV General Discussion/News 12-02-2016, 10:35 AM
Replies: 27
Views: 7,756
Posted By sandifer
Keep in mind that the small differences in...

Keep in mind that the small differences in recovery efficiency between PARE, Beggs, and "Finagin" are more academic than important from a practical standpoint. PARE is not an emergency recovery...
Forum: RV General Discussion/News 11-30-2016, 09:50 AM
Replies: 27
Views: 7,756
Posted By sandifer
To be clear, it's not so much how abruptly you...

To be clear, it's not so much how abruptly you unload the elevator during spin recovery that can cause a crossover, but in how far forward of neutral you move the elevator while you still have a...
Forum: RV General Discussion/News 11-29-2016, 03:35 PM
Replies: 27
Views: 7,756
Posted By sandifer
Jim well described the elevator/aileron technique...

Jim well described the elevator/aileron technique which can clean up competition spins. The high performance monoplanes especially require this type of technique to get spins to look decent. Also...
Forum: RV models of the future (RV-??) 11-24-2016, 10:03 AM
Replies: 387
Views: 88,671
Posted By sandifer
That would be cool, since the current options for...

That would be cool, since the current options for building an Advanced-capable aircraft are limited to a few options, and none are available in kit form. I agree that the market is very small, at...
Forum: RV General Discussion/News 11-15-2016, 09:55 AM
Replies: 9
Views: 5,047
Posted By sandifer
Scott, I'd be willing to bet that with practice...

Scott, I'd be willing to bet that with practice and experimentation you will learn to find a way to get consistent results. Variable aileron (both ways) and elevator inputs, or a combination of both...
Forum: RV General Discussion/News 11-07-2016, 08:01 AM
Replies: 20
Views: 5,730
Posted By sandifer
Excellent - you guys made my morning. Great job...

Excellent - you guys made my morning. Great job Jerry!
Forum: RV General Discussion/News 11-03-2016, 09:25 AM
Replies: 35
Views: 7,588
Posted By sandifer
He typically recommends 2-blade for 320's and...

He typically recommends 2-blade for 320's and 3-blade for 360's.
Forum: RV General Discussion/News 10-20-2016, 10:38 AM
Replies: 71
Views: 17,611
Posted By sandifer
Check out this local TV news segment. Bill you...

Check out this local TV news segment. Bill you are just flat awesome!

http://www.wtvy.com/content/news/Dal...397509161.html
Forum: RV General Discussion/News 10-17-2016, 12:48 PM
Replies: 4
Views: 1,754
Posted By sandifer
Well Bill, since I have trouble beating the top...

Well Bill, since I have trouble beating the top Advanced 'lifer' guys in their MX-2's, I just moved to Unlimited so I don't have to fly against them. :) But seriously, I'm only doing this for...
Forum: RV General Discussion/News 10-17-2016, 10:18 AM
Replies: 4
Views: 1,754
Posted By sandifer
Ron also ended up with a 1st place in the 2016...

Ron also ended up with a 1st place in the 2016 IAC Regional Series for Sportsman in the Northeast Region, which ranks the highest scoring pilots for each category in their Region of the country,...
Forum: RV General Discussion/News 09-28-2016, 09:01 PM
Replies: 71
Views: 17,611
Posted By sandifer
Well since nobody can use the RV as an excuse...

Well since nobody can use the RV as an excuse anymore, guess ya gotta drum up others. :p
Forum: RV General Discussion/News 09-28-2016, 08:58 PM
Replies: 71
Views: 17,611
Posted By sandifer
Ha...he'd just lose a couple years learning to...

Ha...he'd just lose a couple years learning to fly it equally well. :)
Forum: RV General Discussion/News 09-28-2016, 03:09 PM
Replies: 71
Views: 17,611
Posted By sandifer
Congratulations Bill!

Nationals is a wrap for the RV guys, and huge congrats to Bill McLean for finishing with a 3rd place overall medal in Sportsman! As you can see, he was only one percentage point behind 1st. I figured...
Forum: RV General Discussion/News 09-27-2016, 03:31 PM
Replies: 71
Views: 17,611
Posted By sandifer
Bill kicked butt this afternoon and placed 2nd in...

Bill kicked butt this afternoon and placed 2nd in the second flight flying his Free sequence here. Now sitting at 4th overall after two flights. Patrick Coggin also had a great 2nd flight, placing...
Forum: RV General Discussion/News 09-27-2016, 08:10 AM
Replies: 71
Views: 17,611
Posted By sandifer
Hope he submitted the signed copies!

Hope he submitted the signed copies!
Forum: RV General Discussion/News 09-24-2016, 09:27 PM
Replies: 71
Views: 17,611
Posted By sandifer
Disagree. Sounds like you've got a halo for her....

Disagree. Sounds like you've got a halo for her. ;)

Fly good fellas!
Forum: RV General Discussion/News 09-23-2016, 11:39 PM
Replies: 17
Views: 5,908
Posted By sandifer
Well, this thread is about the Pitts S-1, which...

Well, this thread is about the Pitts S-1, which is a different airplane from the S-2. Though the Christen Eagle is S-2 sized, it's different from both Pitts' in that it has wide, soft spring gear as...
Forum: RV General Discussion/News 09-23-2016, 11:44 AM
Replies: 17
Views: 5,908
Posted By sandifer
Good post Jim. This is mine - just a classic '76...

Good post Jim. This is mine - just a classic '76 factory 180 HP S-1S, stock except for the Catto prop (Exp/Exhibition recert).

My only other advice to the OP regarding transitioning from the RV-3...
Forum: RV General Discussion/News 09-22-2016, 08:45 PM
Replies: 17
Views: 5,908
Posted By sandifer
I flew an RV-3 for about 400 hrs before buying...

I flew an RV-3 for about 400 hrs before buying the Pitts S-1S that I have now. About 600 hrs on the Pitts now. I've been fortunate to have flown eight different S-1 Pitts', including the S-1C, S-1D,...
Forum: RV General Discussion/News 09-12-2016, 02:54 PM
Replies: 7
Views: 1,345
Posted By sandifer
Great first flight Brad. Looks like you felt...

Great first flight Brad. Looks like you felt sorry for the poor Pitts' on your 2nd flight. :)
Forum: RV General Discussion/News 08-25-2016, 09:36 AM
Replies: 12
Views: 9,122
Posted By sandifer
I gather you have attended, but not flown a...

I gather you have attended, but not flown a contest. For most of us who enjoy contests, everything you state above applies - except "a day" becomes 2 1/2 days or so. Everyone takes different things...
Forum: RV-3 08-08-2016, 07:52 AM
Replies: 18
Views: 3,610
Posted By sandifer
My old RV-3 with a 125 hp O-290 had pretty decent...

My old RV-3 with a 125 hp O-290 had pretty decent T/O performance. ;) No real wind that day -

http://www.youtube.com/watch?v=5SEYsX0Bio4
Forum: RV-8/8A 08-02-2016, 04:03 PM
Replies: 17
Views: 3,577
Posted By sandifer
My Pitts S-1S has no side support and I don't...

My Pitts S-1S has no side support and I don't miss the molded side supports found in the S-2B/C. As mentioned, it's all about having a ratchet belt. I don't need to tighten mine uncomfortably, just a...
Forum: RV General Discussion/News 07-10-2016, 12:03 PM
Replies: 6
Views: 2,420
Posted By sandifer
Unfortunately most of the resistance to this...

Unfortunately most of the resistance to this notion originated within the RV community itself. I hope this discussion is now for the archives. Bill never had an agenda- he evolved into a top level...
Forum: RV-7/7A 06-13-2016, 11:06 AM
Replies: 26
Views: 10,381
Posted By sandifer
So would I. It's still better than a single belt....

So would I. It's still better than a single belt. With the double Hooker belt, I have accidentally unlatched one side while flying acro. Others have as well. We don't exactly have a rash of folks...
Forum: RV-4 05-18-2016, 12:59 PM
Replies: 16
Views: 6,209
Posted By sandifer
For those of you with FP props, simplify your...

For those of you with FP props, simplify your life and ignore the tach during acro. Seriously. You will not hurt anything by going well beyond 2,700 RPM for a few seconds on a downline. We Pitts S-1...
Forum: RV-4 05-03-2016, 10:42 AM
Replies: 16
Views: 6,209
Posted By sandifer
Too many variables with aircraft setup, DA,...

Too many variables with aircraft setup, DA, G-pull, what you're trying to accomplish, and how you want it to look. This is something you must determine on your own. It's common to be concerned with...
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