VansAirForceForums  
Home > VansAirForceForums

-POSTING RULES
-Advertise in here!
- Today's Posts | Insert Pics

Keep VAF Going
Donate methods

Point your
camera app here
to donate fast.


Go Back   VAF Forums > Search Forums
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Showing results 1 to 64 of 500
Search took 0.02 seconds.
Search: Posts Made By: sandifer
Forum: RV General Discussion/News 03-31-2021, 11:27 AM
Replies: 8
Views: 1,220
Posted By sandifer
No fooling, an RV is guaranteed to go home with...

No fooling, an RV is guaranteed to go home with an Unlimited trophy at most Regional contests. ;):)
Forum: RV-3 09-28-2020, 09:38 PM
Replies: 0
Views: 632
Posted By sandifer
CN-2 Spar Mod Experience

Have an A&P friend who acquired a nice RV-3A and is looking for someone with experience performing the CN-2 spar mod. If anyone can advise, please PM me. Thanks
Forum: RV-8/8A 08-04-2020, 10:21 AM
Replies: 25
Views: 7,935
Posted By sandifer
There is no need to close the throttle in any...

There is no need to close the throttle in any airplane. Laws of physics dictate that from a constant power setting you cannot gain airspeed if your entry and exit altitudes are equal. Leave the power...
Forum: RV-7/7A 07-21-2020, 02:16 PM
Replies: 9
Views: 2,228
Posted By sandifer
Are we now concerned about RV tails coming apart...

Are we now concerned about RV tails coming apart from doing SPINS? :confused:
Forum: RV-7/7A 07-21-2020, 10:20 AM
Replies: 9
Views: 2,228
Posted By sandifer
I agree with Ron, what's the point? Power on flat...

I agree with Ron, what's the point? Power on flat spin recovery is standard stuff in acro planes, and the RV responds like any other. I've flown many a flight in that particular box, mostly good...
Forum: RV-7/7A 07-14-2020, 10:03 AM
Replies: 34
Views: 13,946
Posted By sandifer
I've never flown an airplane that will gain...

I've never flown an airplane that will gain energy through a loop, assuming a constant power setting (full power or not) and an equal entry/exit altitude. The power setting in a Pitts during acro is...
Forum: RV-7/7A 07-13-2020, 06:04 PM
Replies: 34
Views: 13,946
Posted By sandifer
This is a fallacy. If you left the throttle alone...

This is a fallacy. If you left the throttle alone and oversped while exiting at the same altitude you started from, then you just defied the laws of physics. :) You're not going to gain airspeed...
Forum: RV General Discussion/News 07-10-2020, 07:45 AM
Replies: 43
Views: 8,346
Posted By sandifer
The secrets are now coming out! I take back the...

The secrets are now coming out! I take back the ASI comment for RV hammers based on Bill and Karl's feedback. :)

Saville, the clues available for pivot timing vary a bit between aircraft types, and...
Forum: RV General Discussion/News 07-09-2020, 07:30 AM
Replies: 43
Views: 8,346
Posted By sandifer
Entry speed is whatever allows you to get to...

Entry speed is whatever allows you to get to vertical without stalling or falling out. You could do this from 100mph or from Vne, it doesn't matter. Entry speeds don't matter for the basic figures....
Forum: RV General Discussion/News 07-08-2020, 09:44 PM
Replies: 43
Views: 8,346
Posted By sandifer
Skylor, I might offer an alternative take on the...

Skylor, I might offer an alternative take on the snap roll. In your video, you definitely did a snap. You cannot mistake a snap for a shoulder roll since a shoulder roll is a very uncomfortable...
Forum: RV-8/8A 07-03-2020, 06:08 PM
Replies: 18
Views: 6,582
Posted By sandifer
Well... to dry off, you're gonna have to explain...

Well... to dry off, you're gonna have to explain how to enter a spin with neutral elevator and your feet on the floor. :)
Forum: RV-8/8A 07-02-2020, 06:43 AM
Replies: 18
Views: 6,582
Posted By sandifer
I disagee that a good aileron roll is done with...

I disagee that a good aileron roll is done with your feet on the floor, but you can definitely do that if you're just getting started and want to simplify things for the ol' brain to manage. And I...
Forum: RV General Discussion/News 06-29-2020, 09:54 PM
Replies: 43
Views: 8,346
Posted By sandifer
Hey Jerry, I hear ya. And lest anyone feel "real"...

Hey Jerry, I hear ya. And lest anyone feel "real" aerobatic airplanes hold up forever to acro, after 1900 hrs on my Pitts airframe, with lots of acro time all flown within limits, it ended up with...
Forum: RV General Discussion/News 06-29-2020, 01:42 PM
Replies: 43
Views: 8,346
Posted By sandifer
I've been a judge for the last 8 years and...

I've been a judge for the last 8 years and competed for 10 years through all the categories, so I do have some perspective here, but...



There's more than one technique which can achieve good...
Forum: RV General Discussion/News 06-29-2020, 12:05 PM
Replies: 43
Views: 8,346
Posted By sandifer
If you're running fuel injection, the charge of...

If you're running fuel injection, the charge of fuel in the lines alone will keep the engine running plenty long enough for temporary zero or neg G exposure, especially if it's so short in duration...
Forum: RV General Discussion/News 06-29-2020, 10:42 AM
Replies: 43
Views: 8,346
Posted By sandifer
But do you actually have competition experience?...

But do you actually have competition experience? I don't see you in the IAC records unless your activity pre-dates '06. I only bring this up because nearly everyone who makes these types of...
Forum: RV-7/7A 06-27-2020, 11:16 AM
Replies: 29
Views: 6,307
Posted By sandifer
Curtis Pitts designed the S-1 in the mid 40's...

Curtis Pitts designed the S-1 in the mid 40's because he just wanted an airplane that handled and rolled better than the Wacos of the day. Competition acro didn't exist back then. The Decathlon is a...
Forum: RV-7/7A 06-27-2020, 09:41 AM
Replies: 29
Views: 6,307
Posted By sandifer
Why do so many RVers still feel compelled to say...

Why do so many RVers still feel compelled to say they are not "competition" machines? There has never been, nor does there seem to be a new trend of folks confusing them with a +/-10G Extra 330SC....
Forum: RV-7/7A 06-26-2020, 09:31 PM
Replies: 29
Views: 6,307
Posted By sandifer
If you'll indulge a little thread drift, here's a...

If you'll indulge a little thread drift, here's a video I made a few weeks ago on what 720 deg/sec ACTUALLY looks like. It's an epic Facebook topic among certain circles....
Forum: RV-7/7A 06-26-2020, 09:01 PM
Replies: 29
Views: 6,307
Posted By sandifer
I agree with the comment about it being likely...

I agree with the comment about it being likely that you were holding some aft stick during the roll, which caused you to "dish" out low. 20 degrees nose high at 125KT in an RV-7 is just fine if you...
Forum: RV-3 05-26-2020, 08:56 AM
Replies: 6
Views: 1,927
Posted By sandifer
Does yours have a CS prop? Otherwise, these...

Does yours have a CS prop? Otherwise, these planes don't glide that steeply. When I first started flying my RV-3 years back, I was coming from a Champ, which slips quite well. I overshot a number of...
Forum: RV Photo/Video URLs 05-08-2020, 04:04 PM
Replies: 19
Views: 3,732
Posted By sandifer
Yep, many a metal-wing Super D has experienced...

Yep, many a metal-wing Super D has experienced fuel leaks due to fuel sloshing from snaps, which cracked the tank/baffles over time. The tank design was updated at some point on late models, but I'd...
Forum: RV Photo/Video URLs 05-06-2020, 08:05 PM
Replies: 19
Views: 3,732
Posted By sandifer
Yep, half roll per 45 degrees of turn is one...

Yep, half roll per 45 degrees of turn is one flavor. The other two flavors they come in are 60 degrees of turn per half roll, and 90 degrees of turn per half roll...all done both to the inside and...
Forum: RV Photo/Video URLs 05-05-2020, 11:51 AM
Replies: 19
Views: 3,732
Posted By sandifer
Hey Brian, great to see you being branching out...

Hey Brian, great to see you being branching out with the RV! Though the IAC judge in me must mention that you are doing a whole lot of turning under positive G, but almost no turning under negative...
Forum: RV-3 05-04-2020, 07:29 PM
Replies: 13
Views: 2,280
Posted By sandifer
Everyone's approach speed will be different due...

Everyone's approach speed will be different due to pilot preference, comfort level, ASI errors, and weight differences. My old RV-3 weighed 700 lbs. empty (O-290, wood prop, VFR panel, no elec.) and...
Forum: RV-14 02-01-2020, 06:34 PM
Replies: 37
Views: 7,918
Posted By sandifer
Here's what T-37 spin recovery technique looks...

Here's what T-37 spin recovery technique looks like in normal acro planes. :)

http://www.youtube.com/watch?v=NBQWZCKYWO4
Forum: RV-3 11-27-2019, 07:42 AM
Replies: 24
Views: 5,613
Posted By sandifer
He was referring to the One Design rather than an...

He was referring to the One Design rather than an Extra. The wing of a 1D is barely more efficient than a baseball bat.
Forum: RV-3 11-25-2019, 12:49 PM
Replies: 24
Views: 5,613
Posted By sandifer
That's cool to hear Rob. Now you and Mark get...

That's cool to hear Rob. Now you and Mark get your butts to a contest in that thing! :D
Forum: RV General Discussion/News 04-08-2019, 09:32 AM
Replies: 43
Views: 8,098
Posted By sandifer
I dealt with this all the time in the Pitts at my...

I dealt with this all the time in the Pitts at my old airport with students (and private pilots) going round and round the pattern all day long in trainers. Most of them were prone to the extended...
Forum: RV General Discussion/News 03-19-2019, 03:00 PM
Replies: 166
Views: 20,855
Posted By sandifer
That's a giant stretch there sunshine. It was...

That's a giant stretch there sunshine. It was clearly a joke, and as a former RV pilot, I've been a huge advocate for RV competition/precision acro (on VAF and in general) for many years and have...
Forum: RV General Discussion/News 03-19-2019, 10:51 AM
Replies: 166
Views: 20,855
Posted By sandifer
Glad you've got the interest, just be aware that...

Glad you've got the interest, just be aware that it's really not that much of a time suck. This is a common misconception about the sport. You choose your own level of time commitment. I'd guess I...
Forum: RV General Discussion/News 03-19-2019, 10:43 AM
Replies: 166
Views: 20,855
Posted By sandifer
Hel|, RVs don't roll fast enough to start...

Hel|, RVs don't roll fast enough to start "aggressively". :D To each their own, but anyone who thinks competition acro is all about jerking the airplane around as abruptly as possible doesn't really...
Forum: RV General Discussion/News 03-19-2019, 09:29 AM
Replies: 166
Views: 20,855
Posted By sandifer
To me, there is a more underlying question...

To me, there is a more underlying question associated with Ron's poll, and that is why more RV pilots are not MORE interested in acro and hanging out with like-minded folks who can help them...
Forum: RV General Discussion/News 01-19-2019, 12:40 PM
Replies: 24
Views: 6,667
Posted By sandifer
IMO those who often call snaps "horizontal spins"...

IMO those who often call snaps "horizontal spins" do a huge disservice to the understanding of proper snap technique. As you've discovered, pulling to the stall or buffet before applying rudder...
Forum: RV General Discussion/News 12-27-2018, 08:34 AM
Replies: 24
Views: 6,667
Posted By sandifer
Randy, have you had quality coaching/critiquing...

Randy, have you had quality coaching/critiquing on snap technique from someone truly able to dispense it? That can go a long way. Really good, repeatable snaps are a high art form and take a whole...
Forum: RV General Discussion/News 12-26-2018, 08:32 PM
Replies: 24
Views: 6,667
Posted By sandifer
Unfortunately, misinformation about the...

Unfortunately, misinformation about the suitability of RVs for competition acro has largely come from those within the RV community itself who have little or no experience with it. Fortunately folks...
Forum: RV General Discussion/News 12-26-2018, 04:11 PM
Replies: 24
Views: 6,667
Posted By sandifer
Randy, the lack of spin in the Known is not...

Randy, the lack of spin in the Known is not really a strategic trend beginning this year. The Known changes every year, and sometimes they simply don't have a spin. This has happened before....
Forum: RV-6/6A 08-21-2018, 07:14 AM
Replies: 3
Views: 2,000
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, 01:09 PM
Replies: 3
Views: 2,000
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, 03:21 PM
Replies: 34
Views: 9,524
Posted By sandifer
More like removes technique discipline. :D

More like removes technique discipline. :D
Forum: RV-14 08-08-2018, 06:47 AM
Replies: 34
Views: 9,524
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, 08:19 PM
Replies: 34
Views: 9,524
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, 06:22 PM
Replies: 22
Views: 5,460
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, 06:44 AM
Replies: 16
Views: 2,586
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, 03:51 PM
Replies: 16
Views: 2,586
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, 01:55 PM
Replies: 16
Views: 2,586
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, 09:19 AM
Replies: 32
Views: 5,173
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, 06:59 AM
Replies: 23
Views: 6,164
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, 02:40 PM
Replies: 23
Views: 6,164
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, 11:13 AM
Replies: 10
Views: 2,827
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, 08:20 AM
Replies: 21
Views: 4,512
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, 01:07 PM
Replies: 4
Views: 1,107
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, 09:35 AM
Replies: 16
Views: 4,133
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, 09:14 AM
Replies: 29
Views: 4,790
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, 02:59 PM
Replies: 19
Views: 3,954
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, 06:40 PM
Replies: 7
Views: 1,371
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, 07:22 AM
Replies: 32
Views: 9,920
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, 07:58 AM
Replies: 32
Views: 9,920
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, 10:54 AM
Replies: 14
Views: 3,252
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, 09:24 AM
Replies: 14
Views: 3,252
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, 10:56 AM
Replies: 6
Views: 1,282
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, 08:29 AM
Replies: 24
Views: 5,042
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, 02:21 PM
Replies: 24
Views: 5,042
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, 01:03 PM
Replies: 22
Views: 5,139
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...
Showing results 1 to 64 of 500

 
Forum Jump

All times are GMT -6. The time now is 05:05 PM.


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.