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Search: Posts Made By: skylor
Forum: Safety 02-22-2021, 12:39 AM
Replies: 46
Views: 2,694
Posted By skylor
Steve, I don’t know if there is a check valve in...

Steve,

I don’t know if there is a check valve in the governor or if the internal oil pump is a constant displacement pump that just didn’t have any significant internal leak-by when new and...
Forum: Safety 02-21-2021, 03:22 PM
Replies: 46
Views: 2,694
Posted By skylor
This seems to be dependent on prop governor. On...

This seems to be dependent on prop governor. On my IO-360A1B6 with MT (Avia) governor, I have full prop control down to very low engine speed. In my own "true power-off" glide testing (mixture...
Forum: RV General Discussion/News 02-16-2021, 02:38 PM
Replies: 12
Views: 735
Posted By skylor
Yep, the cylinder re-test requirement is a...

Yep, the cylinder re-test requirement is a Department Of Transportion requirement, which very much applies to cylinders being carried aboard aircraft! Of course this doesn't have much to do with ELT...
Forum: Safety 02-11-2021, 12:35 PM
Replies: 46
Views: 2,694
Posted By skylor
A lot of factors are at play here. If you were at...

A lot of factors are at play here. If you were at idle power with the prop pulled back (or someone with a FP prop) you likely have some residual thrust increasing the "glide" ratio. Winds will also...
Forum: Safety 02-09-2021, 09:45 PM
Replies: 46
Views: 2,694
Posted By skylor
360 Degree Turns

Steve,

Altitude for a 360 degree gliding turn is largely dependent on turn rate and turn radius which in turn are dependent on bank angle and speed. Like you, I've found that V_bg is too fast for...
Forum: RV Photo/Video URLs 02-06-2021, 02:12 PM
Replies: 0
Views: 305
Posted By skylor
AvWeb Pictures of the Week

A buddy of mine and I took turns winning AvWeb's Photo of the Week.

This week his picture that he shot of me a few weeks ago was the number 1...
Forum: Traditional Aircraft Engines 02-04-2021, 12:29 AM
Replies: 13
Views: 957
Posted By skylor
Compression Ratio

Most if the IO-360 series excluded from the auto fuel columns have higher compression ratios (8.7:1) than the O-360 (8.5:1). Th IO-390 which is also excluded has an 8.9:1 CR.

Iím not too familiar...
Forum: RV General Discussion/News 02-03-2021, 09:40 PM
Replies: 12
Views: 1,387
Posted By skylor
Glide Ratio

Yes, this will affect your engine out glide ratio IF you lose the ability for the governor to supply oil to the prop. The fine pitch stop that's being referred to is (on Hartzell propellers) an...
Forum: California 02-02-2021, 12:51 AM
Replies: 6
Views: 348
Posted By skylor
Torrance

I have an RV8 in 2751I and I'm there almost every Friday through Sunday in the afternoons.

Did you used to share hangar space with Dave Richardson?

Skylor
Forum: RV-8/8A 02-01-2021, 12:34 AM
Replies: 4
Views: 491
Posted By skylor
What is stopping them?

What is limiting the travel of your ailerons? I.E what is causing them to stop before they reach full travel?

Skylor
Forum: RV-8/8A 01-30-2021, 11:43 PM
Replies: 2
Views: 519
Posted By skylor
What are your doing with an -8? Skylor

What are your doing with an -8?

Skylor
Forum: RV General Discussion/News 01-30-2021, 11:39 PM
Replies: 30
Views: 2,910
Posted By skylor
Many refer to that as lying by omission. Skylor

Many refer to that as lying by omission.

Skylor
Forum: RV General Discussion/News 01-30-2021, 02:31 PM
Replies: 137
Views: 33,159
Posted By skylor
Light Twin

Iíve heard it said that on light piston twins the second engine barely overcomes its extra drag and weight. Iíve also heard that certified twins typically cost about three times as much to fly and...
Forum: RV General Discussion/News 01-27-2021, 12:49 AM
Replies: 81
Views: 8,688
Posted By skylor
RV?

Hey, I didnít know youíre building an RV!

Skylor
Forum: Alternative Engines 01-25-2021, 02:37 PM
Replies: 52
Views: 3,116
Posted By skylor
Here's a pretty good article on this...

Here's a pretty good article on this subject:

https://www.forbes.com/sites/enriquedans/2018/08/19/myths-and-shibboleths-about-electric-vehicles-the-long-tailpipe-theory/?sh=217de0b27f26

Skylor
Forum: Alternative Engines 01-25-2021, 02:35 PM
Replies: 52
Views: 3,116
Posted By skylor
That's probably true, but electric motors don't...

That's probably true, but electric motors don't have a perfectly smooth torque delivery either and still have drivetrain harmonics. They are probably smoother than our 4 or 6 cylinder piston engines...
Forum: Glass Cockpit 01-23-2021, 02:19 PM
Replies: 3
Views: 291
Posted By skylor
GRT AHRS

The AHRS should be installed level with the nominal level flight attitude of the aircraft as defined in the plans and aligned with its forward/aft axis parallel to the aircraft center line. I'm not...
Forum: RV General Discussion/News 01-23-2021, 01:44 PM
Replies: 13
Views: 1,476
Posted By skylor
Weight Adders

Primer and paint as mentioned above are a biggie. If you choose to prime interior and structural parts, pay particular attention to keeping the application as thin as possible because the weight can...
Forum: RV General Discussion/News 01-23-2021, 12:59 PM
Replies: 13
Views: 1,476
Posted By skylor
Also, some planes, including certified ones, run...

Also, some planes, including certified ones, run out of elevator authority at forward CGís and low speed before they reach stall. This sometimes shows up in POH performance tables and charts leading...
Forum: RV General Discussion/News 01-17-2021, 03:42 PM
Replies: 28
Views: 2,373
Posted By skylor
This false sentiment is thrown about by...

This false sentiment is thrown about by side-by-side owners and builders more than the the -9x crowd insist that theirs is better than the -7x .

I've never have someone complain about getting a ride...
Forum: RV Ongoing Maintenance Issues 01-14-2021, 08:44 PM
Replies: 40
Views: 5,033
Posted By skylor
Blue Dye

It has been posted elsewhere here on VAF that the softening of pro-seal isn't due to fuel vapor, it's due to high concentrations of the blue dye when exposed to oxygen (air). The softening occurs in...
Forum: RV General Discussion/News 01-13-2021, 08:54 PM
Replies: 9
Views: 1,087
Posted By skylor
By the way, I do agree that it's annoying that...

By the way, I do agree that it's annoying that FAA registration and certificate data can be accessed so easily and be taken advantage of by unscrupulous businesses like this. I too received one of...
Forum: RV General Discussion/News 01-13-2021, 03:03 PM
Replies: 9
Views: 1,087
Posted By skylor
So I'm a bit confused by your description. Was...

So I'm a bit confused by your description. Was your registration renewal notice from the FAA or from the "service provider". I think the FAA renewal notice has a URL right on it, but if not it's...
Forum: Traditional Aircraft Engines 01-09-2021, 01:06 PM
Replies: 19
Views: 1,901
Posted By skylor
I experienced a similar behavior change with...

I experienced a similar behavior change with starts on my IO-360 a little over a year ago except my issue started occurring during hot starts. I traced the problem to an intake tube seal leak and...
Forum: RV Ongoing Maintenance Issues 01-08-2021, 11:55 PM
Replies: 38
Views: 3,945
Posted By skylor
Filter Installation or Mounting

Much of the early discussion in the thread seemed to focus around excess oil pressure. I don't believe that's the issue. I took a look at both a Tempest filter as well as a Motorcraft automotive...
Forum: RV-9/9A 01-04-2021, 03:46 PM
Replies: 29
Views: 3,650
Posted By skylor
Spar

This is incorrect. The 9 wing is thicker and the spar is taller then the -7. The -9 fuselage has a different center section than the -7 to accommodate the different wing spar.

Skylor
Forum: RV-8/8A 01-02-2021, 02:49 PM
Replies: 44
Views: 5,541
Posted By skylor
FWF Temperatures

I wonder if engine temperature and FWF temperature has anything to do with engine sag. I.E. are those when engines that tend to run hot likely to see more sag over time than those who's engines...
Forum: RV General Discussion/News 01-01-2021, 12:26 PM
Replies: 21
Views: 2,685
Posted By skylor
You forgot the retractable gear option. You...

You forgot the retractable gear option. You really need it at those speeds.

Skylor
Forum: RV-8/8A 12-25-2020, 06:57 PM
Replies: 14
Views: 1,891
Posted By skylor
As posted above, "OP" is shorthand for "Original...

As posted above, "OP" is shorthand for "Original Poster".

I'm not sure why the original poster posted a drawing for the RV7/7A in an 8/8A forum and when his signature says he has an 8. ...
Forum: RV-8/8A 12-25-2020, 11:22 AM
Replies: 14
Views: 1,891
Posted By skylor
Kit Versiom

This depends on which version of the 8 kit the OP is building. If itís the original ďnon matched-holeĒ fuselage kit, then drawing 27 is the correct drawing. If heís building the ď-1Ē fuselage then...
Forum: RV-8/8A 12-25-2020, 02:02 AM
Replies: 14
Views: 1,891
Posted By skylor
VS Spar Trim

It’s been a few years, but I recall following the plans for trimming the end of the VS forward spar and it worked out fine. Are you sure that you have the HS incidence correctly set and that you are...
Forum: Safety 12-25-2020, 01:56 AM
Replies: 61
Views: 7,982
Posted By skylor
Depleted Battery

So several comments:

1. Launching an electrical dependent panel or plane or for a night flight immediately after jump-starting a dead battery is frequently going to be a recipe for disaster, as I...
Forum: RV General Discussion/News 12-24-2020, 01:33 PM
Replies: 35
Views: 2,632
Posted By skylor
Va Speed

Something often overlooked is that "POH" Va speed is for gross weight. At loadings less than gross weight, Va needs to be reduced.

Skylor
Forum: Alternative Engines 12-24-2020, 11:18 AM
Replies: 748
Views: 154,604
Posted By skylor
Some cars out there have returnless fuel systems...

Some cars out there have returnless fuel systems and no pressure regulator. They control injector rail pressure with the fuel pump.

Skylor
Forum: Alternative Engines 12-24-2020, 11:12 AM
Replies: 748
Views: 154,604
Posted By skylor
Pump Control

Cooling requirements of the pump should be proportional to the power input. Donít some modern cars use PWM control of the fuel pumps to control fuel rail pressures?

Skylor
Forum: RV General Discussion/News 12-24-2020, 10:54 AM
Replies: 35
Views: 2,632
Posted By skylor
What makes you think this? This implies that you...

What makes you think this? This implies that you believe the RV has more ďmarginĒ in the yellow than other aircraft. I honestly donít think the RV tails are significantly over-built in terms of...
Forum: Safety 12-20-2020, 08:38 PM
Replies: 28
Views: 2,868
Posted By skylor
These units really need an inline...

These units really need an inline check-valve/relief valve plumbed in parallel to the ball valve shut-off valve (or solenoid valve) to prevent over-pressure of the accumulator when the valve is...
Forum: RV General Discussion/News 12-18-2020, 11:17 AM
Replies: 53
Views: 3,870
Posted By skylor
Idle Thrus

Just be mindful of the the fact that at idle and low RPM setting, youíre still getting some thrust from your engine. This can make a big difference in SFO performance in a light, clean plane. Also,...
Forum: RV General Discussion/News 12-18-2020, 01:08 AM
Replies: 53
Views: 3,870
Posted By skylor
Yes you are

You might not be dreaming but your scenario may not have been realistic to a true engine failure on departure.

1. Were you “engine off” or at idle power?
2. Do you have a constant speed or fixed...
Forum: RV General Discussion/News 12-17-2020, 12:58 PM
Replies: 53
Views: 3,870
Posted By skylor
The BOLD part above is the misunderstanding. A...

The BOLD part above is the misunderstanding. A turn at normal glide angles does not reduce load factor appreciably over that of a level turn.* In the case of a "wing-over" maneuver, that might be...
Forum: RV General Discussion/News 12-17-2020, 09:52 AM
Replies: 53
Views: 3,870
Posted By skylor
Stall/Spin

Unfortunately, Iím aware of at least two cases where this doesnít seem to be true. The first was a Mooney accident from a number of years ago that was caught on video. The spin appeared to happen...
Forum: RV General Discussion/News 12-17-2020, 01:04 AM
Replies: 53
Views: 3,870
Posted By skylor
This is precisely the type misunderstanding of...

This is precisely the type misunderstanding of physics and flight characteristics that can get people hurt when attempting engine out turn-backs.

A descending turn at a steady rate of descent does...
Forum: RV General Discussion/News 12-17-2020, 12:36 AM
Replies: 52
Views: 7,681
Posted By skylor
iPad Mini age

The first iPad Mini wasnít even announced until October 2012.

Skylor
Forum: Traditional Aircraft Engines 12-16-2020, 11:32 AM
Replies: 36
Views: 4,136
Posted By skylor
Good Call.

That's the right approach! This may seem like a pain right now but in the long run this is the safest path forward and will give you peace of mind down the road!

Skylor
Forum: Traditional Aircraft Engines 12-16-2020, 01:02 AM
Replies: 36
Views: 4,136
Posted By skylor
Damaged Gear

The pictures you show of the accessory case gear in post 11 clearly show a damaged gear tooth. In my opinion, the accessory case needs to come apart at a minimum to replace that gear and search for...
Forum: RV General Discussion/News 12-11-2020, 10:29 AM
Replies: 16
Views: 1,156
Posted By skylor
Slip Indicator

I think you are over-thinking this. Why don’t you just temporarily put a real “slip/skid indicator” ball on your panel or glare shield to test this? Look for “Lev-O-Gauge” at a marine store or...
Forum: RV Building Tips/Techniques 11-26-2020, 10:12 PM
Replies: 12
Views: 1,518
Posted By skylor
Fame Pattern

This reasoning is precisely why I chose to fabricate a SS cowl exit ramp for my RV-8, and it's backed up with fiberfrax ceramic insulation. The reasoning here is that a fuel fed FWF fire will result...
Forum: RV General Discussion/News 11-26-2020, 01:21 PM
Replies: 68
Views: 9,026
Posted By skylor
Ground Injuries

While occasionally, though rare, RV sized (even the -10) single engine general aviation aircraft accidents have caused individual fatalities on the ground, it's quite rare for these accidents to...
Forum: RV General Discussion/News 11-25-2020, 03:29 PM
Replies: 68
Views: 9,026
Posted By skylor
Registration

How do they enforce this? Aircraft registrations are submitted to the FAA, not the state government.


Skylor
Forum: RV-8/8A 11-23-2020, 11:59 PM
Replies: 9
Views: 1,322
Posted By skylor
Toe Out vs. Toe In

This seems to be an age old debate with tail-wheel aircraft. My experience is exactly the opposite of what you say. Very slight toe-in (~.1 degree each side) resulted in somewhat unpredictable and...
Forum: RV General Discussion/News 11-21-2020, 12:40 AM
Replies: 26
Views: 4,694
Posted By skylor
We don't have cold weather or snow...

We don't have cold weather or snow...
Forum: RV General Discussion/News 11-17-2020, 12:40 AM
Replies: 25
Views: 3,698
Posted By skylor
Speed Vs Efficiency

Thatís often the case but not always. For example, a fixed pitch prop optimized for max full power speed probably wonít yield the best cruise efficiency....

Skylor
Forum: RV General Discussion/News 11-13-2020, 02:44 PM
Replies: 62
Views: 7,686
Posted By skylor
Closed Course Wind

Actually, wind is a factor on a closed course...but it only serves to slow down the average lap speed.

By the way, from 2017 on, the current Reno lap distance is the measured straight-line distance...
Forum: Traditional Aircraft Engines 11-11-2020, 11:24 PM
Replies: 13
Views: 1,837
Posted By skylor
Who did the inspection of the Mags? Were the...

Who did the inspection of the Mags? Were the breaker points re-timed by any chance?

Skylor
Forum: RV-8/8A 11-08-2020, 03:15 PM
Replies: 124
Views: 67,578
Posted By skylor
Landing Gear Bolt Torque Check

Why the inspection overkill? This is the RV-8 Manual recommendation:

Check these bolts and re-torqued after the first ten flying hours, then again
at 50 hours, and annually thereafter.

After...
Forum: RV-8/8A 10-30-2020, 10:39 PM
Replies: 26
Views: 5,400
Posted By skylor
Engine Size

Most people with ďsmaller enginesĒ will tell you thatís the way to go. But, Iíve never heard anyone with a an angle valve and constant speed prop complain that they wished they installed a...
Forum: Safety 10-30-2020, 04:25 PM
Replies: 11
Views: 2,712
Posted By skylor
Waste

What a waste of my tax dollars. I also find it incredibly annoying that I couldn’t find the “monthly lists” the last time I looked. :mad:

Skylor
Forum: RV-8/8A 10-28-2020, 01:09 AM
Replies: 48
Views: 10,484
Posted By skylor
Mueller/Beggs Decathlon

I know for a fact Mueller/Beggs doesnít work in a Decathlon either:

Instructor: I want you to enter a spin then take your hands and feet off of the controls.
Me:OK
(enters spin)
Instructor: Let go...
Forum: Traditional Aircraft Engines 10-25-2020, 04:44 PM
Replies: 23
Views: 3,782
Posted By skylor
Ground Run

Did this engine see much ground run time and high-power run ups without the cowling before it was flown?
Forum: Traditional Aircraft Engines 10-24-2020, 08:27 PM
Replies: 23
Views: 3,782
Posted By skylor
The original poster indicated that he ran at 75...

The original poster indicated that he ran at 75 degrees ROP while at 75 percent power or above. 75 degrees ROP is just about the worst possible place to run an engine while at high power settings as...
Forum: RV-8/8A 10-24-2020, 01:57 AM
Replies: 25
Views: 4,519
Posted By skylor
I didn't know you needed an endorsement to have a...

I didn't know you needed an endorsement to have a tailwind. Is that why all my trips always seem to end up having headwinds ! :eek:
Forum: Traditional Aircraft Engines 10-23-2020, 08:07 PM
Replies: 52
Views: 7,249
Posted By skylor
Yep, and if you read post #46 youíll see that Iím...

Yep, and if you read post #46 youíll see that Iím well aware of what the risks are. Also, youíll note on the IO-360-A sea level and altitude performance chart it states ďBest Power Mixture Unless...
Forum: Traditional Aircraft Engines 10-23-2020, 12:52 AM
Replies: 52
Views: 7,249
Posted By skylor
Smooth

I should point out that the plane is surprisingly smooth and quiet when operated this way. Itís nothing like lugging the !968 Karmann Ghia I used to drive years ago.

Skylor
Forum: Traditional Aircraft Engines 10-22-2020, 10:18 AM
Replies: 52
Views: 7,249
Posted By skylor
High MP

The primary issue normally caused by low RPM at high MPs is high peak cylinder pressures. This can cause several issues including high CHTs, detonation, pendulum absorber harmonics and failure,...
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