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Search: Posts Made By: skylor
Forum: California 05-07-2021, 10:35 PM
Replies: 4
Views: 367
Posted By skylor
Speed Limit

Iím probably too late with this but please be aware that the LAX special flight rules corridor has a 140 kias speed limit.

Skylor
Forum: RV Building Tips/Techniques 05-07-2021, 10:28 PM
Replies: 12
Views: 618
Posted By skylor
Tensile?

There is really no tensile load in this application because the last nut canít be torqued, otherwise the pedals will bind. The problem with using a fully threaded fastener is that the threaded shank...
Forum: RV-7/7A 05-05-2021, 10:18 PM
Replies: 20
Views: 1,801
Posted By skylor
Nitrous

Nah, I'm the guy with just a couple of meager little tanks! Two other guys are carrying waaaay more than I am. :)

Skylor
Forum: RV-7/7A 05-05-2021, 01:29 PM
Replies: 20
Views: 1,801
Posted By skylor
Who, me? :o

Who, me? :o
Forum: RV-7/7A 05-04-2021, 06:37 PM
Replies: 20
Views: 1,801
Posted By skylor
SB

I'm in middle of incorporating the SB on my -8. I discovered the cracks during annual condition inspection several weeks ago. The air frame has 980 hours on it. I have inspected it every year since...
Forum: RV-8/8A 04-25-2021, 10:24 PM
Replies: 9
Views: 795
Posted By skylor
Radius

The threaded post on the tailwheel fork often has a fairly large radius where it transitions to the larger diameter steering shaft. This prevents the washer from seating flat against the surface at...
Forum: RV General Discussion/News 04-25-2021, 02:18 PM
Replies: 53
Views: 5,184
Posted By skylor
.1 g/gal

I can't find any references that indicate regular unleaded gasoline still contains 0.1 g/gal of lead. Where are you getting this information?

Skylor
Forum: RV General Discussion/News 04-19-2021, 09:35 PM
Replies: 32
Views: 2,034
Posted By skylor
Inflight (P) Mag Check

Hi Evan,

On my angle valve (mags), 2 or 3 degrees change in timing does not cause that much change in EGT. Also, unless your probes are literally right at the exhaust flanges, 1550 EGT seems pretty...
Forum: Traditional Aircraft Engines 04-10-2021, 12:06 PM
Replies: 15
Views: 1,361
Posted By skylor
If it's on a FI engine, my guess is that it could...

If it's on a FI engine, my guess is that it could be relieving vapor pressure between the mechanical pump and the servo. I'm not sure why someone would want to do this unless it helps prevent the...
Forum: RV-8/8A 04-02-2021, 09:33 PM
Replies: 35
Views: 3,518
Posted By skylor
CTE

I think a large contributor to many of these crack incidents is the vastly different coefficient of thermal expansion (CTE) between The Acrylic canopy and the steel frame. Acrylic has a CTE of at...
Forum: RV General Discussion/News 03-29-2021, 02:11 PM
Replies: 69
Views: 6,929
Posted By skylor
Tide Pods vs MMO

Hey, maybe Tide Pods would be good for our engines if we add them to the fuel and oil. ;) Ater all, I've heard detergent fuels and detergent oils are good :)

Skylor
Forum: Traditional Aircraft Engines 03-20-2021, 01:18 PM
Replies: 228
Views: 49,148
Posted By skylor
"Only 3 Failures"?

Per AvWeb:

Some 257 four-cylinder Superior and Lycoming engines are now subject to a new airworthiness directive requiring crankshaft replacement within 25 hours.

3 failures of 257 in service...
Forum: Traditional Aircraft Engines 03-18-2021, 12:33 PM
Replies: 22
Views: 2,919
Posted By skylor
Flaw?

While I agree with many (but not all) things that Mike preaches, what is written above (if true) provides an interesting discussion point. This engine was run to nearly 3x TBO before the failure...
Forum: Alternative Engines 03-11-2021, 02:23 PM
Replies: 95
Views: 9,924
Posted By skylor
Torque alone means nothing!

Here's something that I posted in response to another thread, but it's applicable here:

Torque alone doesn't make anything go! Torque is a measurement of force only and is but one component required...
Forum: RV General Discussion/News 03-06-2021, 10:41 PM
Replies: 7
Views: 817
Posted By skylor
Oops, I mis-read your original post...

Oops, I mis-read your original post...
Forum: RV Ongoing Maintenance Issues 03-06-2021, 09:10 PM
Replies: 9
Views: 714
Posted By skylor
Brakes

Something isn’t right. The stock brakes have plenty of braking power. When I took transition training with Mike Segar in the -7, the brakes seemed hard to press with very little braking. Then I...
Forum: RV General Discussion/News 03-06-2021, 09:05 PM
Replies: 7
Views: 817
Posted By skylor
Why are you changing? Other than the weight, the...

Why are you changing? Other than the weight, the Hartzell BA series are really good propellers!

Skylor
Forum: Traditional Aircraft Engines 03-01-2021, 01:26 PM
Replies: 10
Views: 1,154
Posted By skylor
Throttle Position?

Are you changing the manifold pressure setting between the 2300 and 2500 RPM (i.e., closing the throttle) to keep the same theoretical 65% power setting?

Skylor
Forum: Fuel Injection Systems 02-28-2021, 01:32 PM
Replies: 90
Views: 8,028
Posted By skylor
Cam Sensor?

Ross,

Great information in your post, as always!

I am, however, curious why you would need a cam sensor on an engine with fixed cam timing to use sequential injection? On Lycoming's, since the cam...
Forum: RV-8/8A 02-26-2021, 09:36 PM
Replies: 8
Views: 1,160
Posted By skylor
No pictures but...

I don’t have any pictures, but I did this before drilling the outboard gear holes:

After securing the inboard part of the gear legs with the large fasteners I installed the axles the used ratchet...
Forum: Safety 02-21-2021, 11:39 PM
Replies: 47
Views: 5,035
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, 02:22 PM
Replies: 47
Views: 5,035
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, 01:38 PM
Replies: 13
Views: 1,405
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, 11:35 AM
Replies: 47
Views: 5,035
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, 08:45 PM
Replies: 47
Views: 5,035
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, 01:12 PM
Replies: 0
Views: 475
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 02-03-2021, 11:29 PM
Replies: 13
Views: 1,503
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, 08:40 PM
Replies: 12
Views: 1,797
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 02-01-2021, 11:51 PM
Replies: 6
Views: 522
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 01-31-2021, 11:34 PM
Replies: 4
Views: 791
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, 10:43 PM
Replies: 2
Views: 874
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, 10:39 PM
Replies: 30
Views: 3,435
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, 01:31 PM
Replies: 137
Views: 34,801
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 01-26-2021, 11:49 PM
Replies: 82
Views: 10,529
Posted By skylor
RV?

Hey, I didnít know youíre building an RV!

Skylor
Forum: Alternative Engines 01-25-2021, 01:37 PM
Replies: 52
Views: 4,706
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, 01:35 PM
Replies: 52
Views: 4,706
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, 01:19 PM
Replies: 3
Views: 438
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, 12:44 PM
Replies: 13
Views: 1,920
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, 11:59 AM
Replies: 13
Views: 1,920
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, 02:42 PM
Replies: 28
Views: 3,162
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, 07:44 PM
Replies: 40
Views: 6,676
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, 07:54 PM
Replies: 9
Views: 1,442
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, 02:03 PM
Replies: 9
Views: 1,442
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, 12:06 PM
Replies: 27
Views: 3,532
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, 10:55 PM
Replies: 38
Views: 4,740
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, 02:46 PM
Replies: 29
Views: 4,483
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, 01:49 PM
Replies: 44
Views: 6,734
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 models of the future (RV-??) 01-01-2021, 11:26 AM
Replies: 45
Views: 7,211
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, 05:57 PM
Replies: 14
Views: 2,386
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, 10:22 AM
Replies: 14
Views: 2,386
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, 01:02 AM
Replies: 14
Views: 2,386
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, 12:56 AM
Replies: 61
Views: 9,391
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, 12:33 PM
Replies: 35
Views: 3,144
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, 10:18 AM
Replies: 749
Views: 169,240
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, 10:12 AM
Replies: 749
Views: 169,240
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, 09:54 AM
Replies: 35
Views: 3,144
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, 07:38 PM
Replies: 28
Views: 3,355
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, 10:17 AM
Replies: 53
Views: 4,639
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, 12:08 AM
Replies: 53
Views: 4,639
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, 11:58 AM
Replies: 53
Views: 4,639
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, 08:52 AM
Replies: 53
Views: 4,639
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, 12:04 AM
Replies: 53
Views: 4,639
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 12-16-2020, 11:36 PM
Replies: 52
Views: 8,538
Posted By skylor
iPad Mini age

The first iPad Mini wasnít even announced until October 2012.

Skylor
Forum: Traditional Aircraft Engines 12-16-2020, 10:32 AM
Replies: 36
Views: 5,168
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
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