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Search: Posts Made By: sblack
Forum: Safety 01-03-2022, 08:23 PM
Replies: 15
Views: 3,214
Posted By sblack
There is no indication if a loss of directional...

There is no indication if a loss of directional stability, as noted in the X axis of the 2nd plot. That would require measurement of sideslip and rudder angle. You must be referring to lateral...
Forum: Canada 12-08-2021, 10:27 AM
Replies: 10
Views: 915
Posted By sblack
While I am a fan of Mike, I would not expect him...

While I am a fan of Mike, I would not expect him to know the Canadian regs. The OP is asking for advice on how to interpret the rules, not recommendations for best practices. I donít think we can...
Forum: Fiberglass 12-08-2021, 10:23 AM
Replies: 21
Views: 1,834
Posted By sblack
I have a 30 yr old kit with white gelcoat. I hate...

I have a 30 yr old kit with white gelcoat. I hate gelcoat. It is heavy and prone to cracking. I sanded it all off. There is a lot of gelcoat on an rv4 cowl both in terms of surface area and...
Forum: Safety 11-25-2021, 09:39 PM
Replies: 100
Views: 16,009
Posted By sblack
The way to optimize the turn back is to pull as...

The way to optimize the turn back is to pull as close as you can to stall without stalling. Of course that is dangerous bordering on insane but thatís what the math says works. Lift is everything and...
Forum: RV General Discussion/News 11-25-2021, 09:32 PM
Replies: 16
Views: 1,543
Posted By sblack
Fantastic news. Congratulations. Must have hauled...

Fantastic news. Congratulations. Must have hauled *** with todayís temps too!
Forum: Traditional Aircraft Engines 11-24-2021, 12:11 AM
Replies: 112
Views: 10,988
Posted By sblack
I know several cases where guys had stuck valves....

I know several cases where guys had stuck valves. The engines shook like crazy and lost power and scared the **** out them. They had to do the rooe trick and clean the valve stems, and in some cases...
Forum: RV Building Tips/Techniques 11-23-2021, 11:42 PM
Replies: 18
Views: 2,257
Posted By sblack
Just recall that the wing is stressed for...

Just recall that the wing is stressed for something like 6g plus 50% at max gross weight. Negative g is less but still substantial. The load from it sitting in the ground is a teensy weensy fraction...
Forum: RV-8/8A 11-16-2021, 02:52 PM
Replies: 990
Views: 828,437
Posted By sblack
Bonne chances Scott at CSE4

Bonne chances

Scott at CSE4
Forum: RV General Discussion/News 11-04-2021, 07:20 PM
Replies: 29
Views: 4,245
Posted By sblack
The singer John Denver didn’t know his fuel...

The singer John Denver didn’t know his fuel system well on the longez he bought and it cost him his life. Sometimes the most seemingly insignificant thing can bite you. Knowing your airplane inside...
Forum: Safety 10-30-2021, 02:06 PM
Replies: 10
Views: 1,832
Posted By sblack
I suspect a sufficiently motivated person could...

I suspect a sufficiently motivated person could get out of a tip up.

There is an old joke about a guy in bed with his best friendís wife. They hear the front door open and are panic stricken. He...
Forum: Traditional Aircraft Engines 08-19-2021, 10:41 AM
Replies: 28
Views: 3,637
Posted By sblack
I 2nd the mag check. You need to see if this...

I 2nd the mag check. You need to see if this behavior is there independent of which ignition is on.
Forum: RV-8/8A 08-10-2021, 09:45 PM
Replies: 16
Views: 2,690
Posted By sblack
I have tested different winglet designs in a high...

I have tested different winglet designs in a high speed wind tunnel for business jets. A 2% drag reduction at higher lift coefficients is considered spectacular. Unlike our RVs, business jets do...
Forum: RV models of the future (RV-??) 07-26-2021, 02:02 PM
Replies: 50
Views: 35,581
Posted By sblack
I am not usually a proponent of violence but I...

I am not usually a proponent of violence but I would be willing to make an exception. At minimum a super wedgie is called for. The worst is that while I am old enough to remember song I never saw the...
Forum: RV models of the future (RV-??) 07-26-2021, 12:58 PM
Replies: 50
Views: 35,581
Posted By sblack
Folding wings are a significant weight penalty...

Folding wings are a significant weight penalty and a pita from what
I have seen of my friendís glastar. It compromises the spar location/attachment and the strut location (assuming there is a...
Forum: RV models of the future (RV-??) 07-26-2021, 12:52 PM
Replies: 50
Views: 35,581
Posted By sblack
You think the 8 is an updated version of the 4? I...

You think the 8 is an updated version of the 4? I guess it depends on your definition of updated. They both have wings and a tail and an engine at the front but thatís about the end of the similarity.
Forum: RV Ongoing Maintenance Issues 07-15-2021, 06:09 PM
Replies: 21
Views: 2,124
Posted By sblack
I have to disagree. The idea of one traditional...

I have to disagree. The idea of one traditional mag and an electronic one is that the magneto doesnít need ships power so if your charging system fails you can still fly. Not necessarily an issue for...
Forum: RV-8/8A 07-08-2021, 08:29 PM
Replies: 36
Views: 5,124
Posted By sblack
I dont fly my RV yet but on my other airplane I...

I dont fly my RV yet but on my other airplane I vary the speed factor (1.3) depending on conditions. Really gusty I will be above 1.3. On those dead calm summer nights where holding a precise speed...
Forum: Fiberglass 06-18-2021, 09:16 AM
Replies: 21
Views: 5,324
Posted By sblack
Every temp increase of 10 deg F cuts the cure...

Every temp increase of 10 deg F cuts the cure time in half. If it is In a pot you minimize the surface area for heat to dissipate so as it gets hotter it speeds up the exotherm, which makes it...
Forum: RV-14 06-16-2021, 12:23 PM
Replies: 12
Views: 2,127
Posted By sblack
So this guy is in bed with his best friendís wife...

So this guy is in bed with his best friendís wife (stay with me here, it is related to the subject at hand....). They are carrying on when all of a sudden they hear the front door open and the wife...
Forum: My RV Build Project 05-16-2021, 10:00 PM
Replies: 71
Views: 26,882
Posted By sblack
I find the easiest way to remove powder coat is...

I find the easiest way to remove powder coat is with a plumbers torch and a wire brush.
Forum: RV-4 04-13-2021, 06:55 PM
Replies: 5
Views: 763
Posted By sblack
But I did read the manual....6 yrs ago :o. I will...

But I did read the manual....6 yrs ago :o. I will review it. Thank you.
Forum: RV-4 04-13-2021, 07:56 AM
Replies: 5
Views: 763
Posted By sblack
For me the question is ďinstead of what?Ē. I...

For me the question is ďinstead of what?Ē. I canít make out the designerís intention from the plans.
Forum: RV-4 04-12-2021, 08:33 PM
Replies: 5
Views: 763
Posted By sblack
Elevator stops

I am looking at sheet 30 and the details regarding the elevator stops are a bit sparse. For the up stop it appears that I need to add a cross piece on the fin spar. For the down stop all I see is a...
Forum: Close Calls / Lessons Learned 04-02-2021, 09:42 PM
Replies: 79
Views: 13,998
Posted By sblack
At the risk of drifting off topic I am curious...

At the risk of drifting off topic I am curious how many pilots get trained how to land without a functioning airspeed indicator? I was fortunate to have an old school instructor who taught me. The 2...
Forum: RV General Discussion/News 04-02-2021, 08:16 AM
Replies: 2
Views: 455
Posted By sblack
I think to do that I need a print to pdf driver...

I think to do that I need a print to pdf driver which I donít have. It will only create a prn file

I can export to dwg or dxf, rhino has tons of filters. Hopefully nothing gets corrupted. Worth a...
Forum: RV General Discussion/News 04-01-2021, 11:24 AM
Replies: 2
Views: 455
Posted By sblack
Need help from a Rhino CAD user

I have a 12 yr old laptop with an old version of Rhino 4.0 on it. I have drawn all my panel markings on it but to get them turned into rub on transfers I need to generate a pdf. There are no printer...
Forum: RV Building Tips/Techniques 02-14-2021, 01:04 PM
Replies: 11
Views: 1,372
Posted By sblack
The dimples are for the rivets to hold the...

The dimples are for the rivets to hold the nutplate.
Forum: RV Building Tips/Techniques 02-13-2021, 03:48 PM
Replies: 11
Views: 1,372
Posted By sblack
Thanks for the rivnut warning. I have no...

Thanks for the rivnut warning. I have no experience with them.
Forum: RV Building Tips/Techniques 02-13-2021, 03:47 PM
Replies: 11
Views: 1,372
Posted By sblack
Did you countersink or dimple the skins? I think...

Did you countersink or dimple the skins? I think I could buck a rivet but certainly can't dimple. On both the vertical and horizontal the plates are on the blind side of the end ribs and naturally...
Forum: RV Building Tips/Techniques 02-13-2021, 10:36 AM
Replies: 11
Views: 1,372
Posted By sblack
Tail fairing nut plates

What are most of u folks doing for the tail fairing nut plates? There is very poor access to the inside of the vertical and horizontal stabs to buck rivets or to even dimple the skins. I tried gluing...
Forum: Traditional Aircraft Engines 02-10-2021, 02:48 PM
Replies: 49
Views: 8,920
Posted By sblack
Happened to a friend of mine. He never checked it...

Happened to a friend of mine. He never checked it on the ground for some reason prior to first flight. Took it up and when he turned off the pump the engine quit. He had the wrong pump. Why he never...
Forum: Electronic Ignition Systems 02-07-2021, 11:43 PM
Replies: 36
Views: 7,978
Posted By sblack
There is something fundamentally wrong with...

There is something fundamentally wrong with having switch labels that donít tell the truth. If the ignition switch says L and R then it should be switching the left and right ignitions as labelled....
Forum: RV General Discussion/News 01-22-2021, 09:02 PM
Replies: 10
Views: 2,607
Posted By sblack
When we trained on cessnas we had nothing to...

When we trained on cessnas we had nothing to compare with. That was our normal. We tuned our internal control system to adapt to the airplane. Then you get in an RV and wow, it is so responsively....
Forum: Electrical Systems 01-19-2021, 11:24 AM
Replies: 10
Views: 2,131
Posted By sblack
Why change from simple Motors to servos? What is...

Why change from simple Motors to servos? What is the advantage?
Forum: RV Ongoing Maintenance Issues 01-19-2021, 11:22 AM
Replies: 25
Views: 7,728
Posted By sblack
Wouldnít mildew have a strong odor? I would stick...

Wouldnít mildew have a strong odor? I would stick my nise down there and give it a wiff (no not kidding). But this looks quite unusual so my money woukd be on fire ext. if yours is nearby and dry...
Forum: RV Ongoing Maintenance Issues 12-21-2020, 11:29 AM
Replies: 9
Views: 3,105
Posted By sblack
Wink Don't use anything filler other than epoxy and...

Don't use anything filler other than epoxy and micro balloons I.e. don't use bonding. Find an RV or Composite home builder in your area. A LongEZ guy could fix this in his sleep. Also if it turns out...
Forum: Painting your RV 12-01-2020, 05:09 PM
Replies: 5
Views: 1,506
Posted By sblack
Thanks everyone.

Thanks everyone.
Forum: Painting your RV 12-01-2020, 04:02 PM
Replies: 5
Views: 1,506
Posted By sblack
Paint prep problem

I'm priming and running in to fisheye I wiped down with a wax remover degreaser that smells like jet A. It left a bit of residue so I wiped down with a micro fiber cloth soaked in la quercetin...
Forum: RV-10 11-17-2020, 11:01 PM
Replies: 7
Views: 1,872
Posted By sblack
These are bandaid fixes for the real problem. The...

These are bandaid fixes for the real problem. The third wheel is on the wrong end of the airplane! :D
Forum: RV Building Tips/Techniques 11-16-2020, 08:06 PM
Replies: 19
Views: 3,268
Posted By sblack
Also the long bit allows you to get closer to a...

Also the long bit allows you to get closer to a rivet that is right up against some.min this case you canít get the rivet removal tool straight up and down because of clearance, the same would likely...
Forum: Electrical Systems 11-09-2020, 09:40 AM
Replies: 29
Views: 5,899
Posted By sblack
What is a MOV? I am strictly vfr but I will...

What is a MOV?

I am strictly vfr but I will have my eris on the backup battery for startup, then will switch it to the main bus. No avionics master, as per nuckolds. But if it all goes dark I will...
Forum: RV General Discussion/News 11-05-2020, 03:17 PM
Replies: 8
Views: 3,031
Posted By sblack
Mine (in my Jodel) is a home brew version of the...

Mine (in my Jodel) is a home brew version of the ACS one. I don't plumb it into the exhaust. The vapor goes out a vent tube and the liquid collects and I drain it out after flight. Periodically I...
Forum: RV-6/6A 11-05-2020, 11:00 AM
Replies: 25
Views: 7,841
Posted By sblack
I would go to an aircraft structural maintenance...

I would go to an aircraft structural maintenance guy, these are the guys who are qualified to sign off repairs to primary structure, and have them devise a repair for you. They don't do a lot of...
Forum: RV Ongoing Maintenance Issues 11-03-2020, 09:12 PM
Replies: 13
Views: 3,513
Posted By sblack
Fir the education of those if us not familiar...

Fir the education of those if us not familiar with how this works, I see the discoloration on the valve and on the seat but what exactly causes it? Is it crud on the valve seat that prevents the...
Forum: My RV Build Project 11-02-2020, 09:31 PM
Replies: 19
Views: 15,667
Posted By sblack
Thanks Scott, I will check for the triangle....

Thanks Scott, I will check for the triangle.

Chris, the 3/8Ē holes are supposed to be reamed to 0.374, so one thou under nominal size. So a hardware store bolt very likely should NOT fit.
Forum: RV-4 11-02-2020, 09:27 PM
Replies: 3
Views: 2,542
Posted By sblack
I sanded the gelcoat off, but getting this to fit...

I sanded the gelcoat off, but getting this to fit has been a real bear. Weeks and weeks of frustration. I guess the cowl sat fir years and became twisted. If you have more money than time buy the new...
Forum: RV General Discussion/News 11-02-2020, 09:19 PM
Replies: 7
Views: 1,580
Posted By sblack
Oh this is so true. Then they climb into their...

Oh this is so true. Then they climb into their certified champ with no shoulder harnesses, a glass gascolator and no firesleeve on any lines. The degree to which people believe flying a certified...
Forum: Safety 11-02-2020, 08:51 PM
Replies: 28
Views: 7,733
Posted By sblack
Yes, but it doesnít seem to be the case.

Yes, but it doesnít seem to be the case.
Forum: RV-6/6A 11-02-2020, 08:45 PM
Replies: 25
Views: 7,841
Posted By sblack
Worst case is they make you put some...

Worst case is they make you put some reinforcement in but I bet you a dozen donuts (brave man) they wonít. You donít have a paperweight. It is actually a very small reduction in cross section going...
Forum: Safety 11-02-2020, 03:36 PM
Replies: 28
Views: 7,733
Posted By sblack
Please send a link to this thread to the next...

Please send a link to this thread to the next chump who tries to tell you that winds donít affect your airspeed. I got into a great debate about this here on VAF sometime back and all the guys who...
Forum: My RV Build Project 11-02-2020, 01:48 PM
Replies: 19
Views: 15,667
Posted By sblack
I am going to be doing this step in a few months...

I am going to be doing this step in a few months so I read your post very carefully. My understanding is that the spar splice plate bolts that tie the whole thing together are "close tolerance"...
Forum: RV-12/RV-12iS 10-23-2020, 11:52 AM
Replies: 44
Views: 13,185
Posted By sblack
Kind of disappointing that he couldn't work that...

Kind of disappointing that he couldn't work that out for himself.
Forum: RV General Discussion/News 10-23-2020, 11:50 AM
Replies: 10
Views: 2,657
Posted By sblack
People buy airplanes without inspecting them?...

People buy airplanes without inspecting them? Wow. I guess people play russian roulette too. There have been some pretty entertaining things shown here on VAF. My favorite was the builders who...
Forum: RV General Discussion/News 10-23-2020, 11:43 AM
Replies: 31
Views: 7,352
Posted By sblack
I see it all the time in Canada on Cessna etc. It...

I see it all the time in Canada on Cessna etc. It has to be subtle. One of those grey areas likely that can vary with inspector temperament. If u aren't sure find pictures of similar markings on...
Forum: RV-8/8A 10-21-2020, 11:25 PM
Replies: 5
Views: 2,513
Posted By sblack
Is this the same guy who used to race Pushy...

Is this the same guy who used to race Pushy Galore?
Forum: RV-12/RV-12iS 10-21-2020, 11:18 PM
Replies: 44
Views: 13,185
Posted By sblack
I have a friend who had 150 hrs in gliders and...

I have a friend who had 150 hrs in gliders and went to get his powered private license. On an early lesson on downwind the young instructor said ok now we will do a simulated engine failure....
Forum: RV General Discussion/News 10-21-2020, 11:09 PM
Replies: 12
Views: 3,958
Posted By sblack
I did the opposite. Had a US pilot fly the...

I did the opposite. Had a US pilot fly the airplane in, then drove him back across the border. The guy I bought it from immediately sent a form to the faa deregistering the airplane. Then I applied...
Forum: RV General Discussion/News 10-21-2020, 11:08 PM
Replies: 12
Views: 3,958
Posted By sblack
I did the opposite. Had a US pilot fly the...

I did the opposite. Had a US pilot fly the airplane in, then drove him back across the border. The guy I bought it from immediately sent a form to the faa deregistering the airplane. Then I applied...
Forum: RV-12/RV-12iS 10-21-2020, 10:58 PM
Replies: 44
Views: 13,185
Posted By sblack
And if you are dumb enough to answer that...

And if you are dumb enough to answer that question honestly you deserve what you get :p
Forum: RV Building Tips/Techniques 10-21-2020, 10:55 PM
Replies: 38
Views: 8,034
Posted By sblack
Turning vanes are pretty common in ducts. Every...

Turning vanes are pretty common in ducts. Every closed circuit wind tunnel Iíve seen has them. Optimizing them is Iím sure a very deep subject and poorly designed ones might be worse than none. But...
Forum: RV-12/RV-12iS 10-21-2020, 04:42 PM
Replies: 31
Views: 11,760
Posted By sblack
You should be able to fly without it certified if...

You should be able to fly without it certified if you stay out of controlled airspace and placard it DO NOT USE. What would the DAR do if you took it out of the airplane? Will it crash?
Forum: Electrical Systems 10-21-2020, 04:38 PM
Replies: 29
Views: 6,214
Posted By sblack
Like every other aspect of the build it is all...

Like every other aspect of the build it is all broken down into bite sized chunks. Wiring up my efis and engine module (mgl) was actually pretty straight forward. There is a pin out diagram and you...
Forum: RV-7/7A 10-21-2020, 04:29 PM
Replies: 35
Views: 12,218
Posted By sblack
I went in a friends o360 rv7a with a cs prop. It...

I went in a friends o360 rv7a with a cs prop. It snapped my neck back on brake release. The climb rate and angle blew away every other light ac I ever flew in. Unless your day job is flying f15s you...
Forum: RV-8/8A 10-21-2020, 04:24 PM
Replies: 7
Views: 3,081
Posted By sblack
The OP was asking about the pitch angle of his...

The OP was asking about the pitch angle of his airplane in level flight wasn't he? I am confused as to why people are responding regarding elevator angle, which is irrelevant, as is thrust line.

In...
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