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Search: Posts Made By: scsmith
Forum: Tools 11-08-2018, 06:08 PM
Replies: 20
Views: 1,225
Posted By scsmith
Turn around and run. Run very fast. The only...

Turn around and run. Run very fast.

The only tool worse than a Grizzly tool is a Harbor Freight tool. Or is it Harbor Fright?

I bought a 14" Delta about 4 years ago. It was a new design and model...
Forum: RV General Discussion/News 11-07-2018, 02:16 PM
Replies: 13
Views: 743
Posted By scsmith
+1 for a box truck. Although I found that the...

+1 for a box truck. Although I found that the Penske trucks had much harder suspension. I think maybe the ones with round wheels were extra.

Uhaul truck rode smoother. Still a lot more dynamics...
Forum: RV-10 11-06-2018, 03:04 PM
Replies: 22
Views: 4,076
Posted By scsmith
Do annuals cost a lot because of the retracts?

Do annuals cost a lot because of the retracts?
Forum: RV General Discussion/News 11-05-2018, 10:49 PM
Replies: 11
Views: 1,126
Posted By scsmith
Funny -- when you said, "Beaver, Otter, Cub" I...

Funny -- when you said, "Beaver, Otter, Cub" I just knew immediately that you went through NAVY TPS at PAX.

My good friend Bill Shoemaker ("Doc") had a similar NAVY career, instructed in T-45, flew...
Forum: RV-10 11-05-2018, 08:00 PM
Replies: 22
Views: 4,076
Posted By scsmith
The right seat in the Piper does not have...

The right seat in the Piper does not have brakes?

Is that a GX60 GPS? I just bought an old 1959 C-182 that has one of those, so I guess I need to learn how to use it.

Camanches are really nice...
Forum: Traditional Aircraft Engines 11-05-2018, 07:46 PM
Replies: 27
Views: 3,870
Posted By scsmith
Yuck! E-yew! I didn't know there was liquid in...

Yuck! E-yew!

I didn't know there was liquid in them. I suppose its like a spinal disc -- kind of like a jelly doughnut.

Supposedly the aerobatic mounts are a little stiffer, as others have...
Forum: RV-14 11-05-2018, 06:27 PM
Replies: 20
Views: 2,042
Posted By scsmith
To the OP's original question, there is one...

To the OP's original question, there is one aspect of installing Pmags that the FAA does actually care about. You will get a 40 hr phase I test period rather than a 25 hr phase I test period. ...
Forum: RV Ongoing Maintenance Issues 11-05-2018, 03:36 PM
Replies: 19
Views: 1,452
Posted By scsmith
I replaced all my hoses at 6 years. I think...

I replaced all my hoses at 6 years. I think Cessna and Piper service manuals say 5 years.

I replaced my hoses with teflon-lined hoses from TS Flightlines. I think those are not life limited. Plan...
Forum: Propellers 11-04-2018, 02:05 PM
Replies: 28
Views: 2,744
Posted By scsmith
You are really balancing the engine/prop system,...

You are really balancing the engine/prop system, with all its attachments. At least in my case, the balance weights (bolt and washers) were attached to the ring gear.

I did have a friend with a...
Forum: Propellers 11-03-2018, 10:12 PM
Replies: 28
Views: 2,744
Posted By scsmith
no one should say 'no' to a prop balance

My Whirl Wind 200RV prop was initially about 0.35 ips....much better than average for a C/S prop. When Kregg Victory was done ( I think he used Dynavibe, but I forget) it was less then 0.015 ips. ...
Forum: RV General Discussion/News 11-01-2018, 02:45 AM
Replies: 9
Views: 835
Posted By scsmith
I wonder about the long-term durability of...

I wonder about the long-term durability of bridging the pin holes rather than filling them up. Thermal stresses or internal pressure from moisture/pressure changes might eventually cause the bridge...
Forum: RV General Discussion/News 10-31-2018, 08:03 PM
Replies: 8
Views: 749
Posted By scsmith
Yes, you just want to torque it enough to keep...

Yes, you just want to torque it enough to keep the taper seated. I tapped my taper pins in with a plastic-headed mallet on the head end, fairly hard to be sure the taper was seated, and then...
Forum: RV General Discussion/News 10-28-2018, 07:40 PM
Replies: 13
Views: 1,894
Posted By scsmith
Yeah. But SINCE 1975, I don't think Cessna has...

Yeah. But SINCE 1975, I don't think Cessna has built 10,000.
1975 is about when Van got started. So I think Van is beating the field now.
Forum: RV-8/8A 10-28-2018, 12:55 PM
Replies: 4
Views: 575
Posted By scsmith
Thats for one flap.

Thats for one flap.
Forum: RV General Discussion/News 10-28-2018, 12:53 PM
Replies: 3
Views: 674
Posted By scsmith
I have 380 x 150 - 5 tires on my RV-8. On grass...

I have 380 x 150 - 5 tires on my RV-8. On grass strips, gravel, even packed sandy surfaces like at my gliderport, the larger tires are great, a really noticeable improvement.

I would not say,...
Forum: Midwest 10-26-2018, 12:25 PM
Replies: 24
Views: 1,898
Posted By scsmith
Actually Pete, that's pretty good. It reflects...

Actually Pete, that's pretty good. It reflects the complexity and attention to detail that the homebuilder faces, and shows that while we think of ALMOST everything, we miss something once in a...
Forum: Midwest 10-25-2018, 10:55 PM
Replies: 24
Views: 1,898
Posted By scsmith
Dare I ask why Pete's right wing root fairing is...

Dare I ask why Pete's right wing root fairing is not painted, on an otherwise really nice looking airplane?

At the risk of some thread drift, I confess I have a couple of unpainted bits on my...
Forum: Midwest 10-25-2018, 12:30 AM
Replies: 24
Views: 1,898
Posted By scsmith
Aren't you supposed to be hauling puppies around?...

Aren't you supposed to be hauling puppies around?

Moving beer across state lines.....hmmmm.

The headline reminded me of a hash club. So now, you are a drinking club with a flying problem?
Forum: RV-8/8A 10-24-2018, 03:02 PM
Replies: 49
Views: 4,704
Posted By scsmith
Darwin, I would be delighted to work with you on...

Darwin, I would be delighted to work with you on a modified steering arm geometry, and an accompanying longer link.
Forum: RV-8/8A 10-24-2018, 02:59 PM
Replies: 49
Views: 4,704
Posted By scsmith
It would not be difficult to cut one out of...

It would not be difficult to cut one out of normalized 4130 sheet. But it would require taking it somewhere for heat treat to make the latching notch durable.

I suppose I could cut one out of...
Forum: RV-8/8A 10-23-2018, 06:20 PM
Replies: 49
Views: 4,704
Posted By scsmith
I had exactly the same experience trying to...

I had exactly the same experience trying to discuss it with him.

I would say no, it does not feel as quick and positive as the Rocket Link, but that may be because I set mine with just a little...
Forum: RV-10 10-23-2018, 02:53 PM
Replies: 48
Views: 3,635
Posted By scsmith
I think that is true when ROP, but my observation...

I think that is true when ROP, but my observation of the Bendix servo behavior when LOP is that it does not change fuel flow to match changes in MP in a way that keeps mixture even approximately...
Forum: RV-8/8A 10-23-2018, 02:44 PM
Replies: 49
Views: 4,704
Posted By scsmith
Beware of asymmetry in castor release point

Bruce Eicher linked to the thread I posted where I found out the hard way (although not as hard as it could have been) that with the rocket link, there is an asymmetry in the geometry that causes the...
Forum: RV-10 10-22-2018, 10:35 PM
Replies: 48
Views: 3,635
Posted By scsmith
This question seems to have gotten forgotten as...

This question seems to have gotten forgotten as the thread moved along. I think what happens is that there is some conduction heating of the intake tubes from the cylinders that heats the intake...
Forum: RV-10 10-21-2018, 11:53 PM
Replies: 48
Views: 3,635
Posted By scsmith
Ah, yes, I see. My bad. When you look at...

Ah, yes, I see. My bad. When you look at "today's posts" it doesn't jump out at you which sub-forum it was posted under. I should have looked.

So your numbers look like they are in the ball...
Forum: Traditional Aircraft Engines 10-21-2018, 08:47 PM
Replies: 3
Views: 771
Posted By scsmith
My impression from my limited dealings with them,...

My impression from my limited dealings with them, and word of mouth from friends, all when I used to live in that neck of the woods, was that they were quite good, very thorough, but pretty darn...
Forum: RV-7/7A 10-21-2018, 08:42 PM
Replies: 14
Views: 1,664
Posted By scsmith
Mel, you may well be exactly right here. On...

Mel, you may well be exactly right here. On low-aspect ratio wings, and wings with rectangular planform (we have both!) Hoerner tips are quite good. The primary benefit of the sheared tip is that...
Forum: RV-10 10-21-2018, 08:27 PM
Replies: 48
Views: 3,635
Posted By scsmith
What engine do you have?

The fuel flow and power numbers depend on which engine you have, but no, I don't think your numbers sound right. In particular, your fuel flow is way too high to be LOP unless you have a bigger than...
Forum: RV Ongoing Maintenance Issues 10-21-2018, 01:04 PM
Replies: 15
Views: 2,863
Posted By scsmith
You got me!

When I first started reading the post, I thought, "Wait! What? How can it be that the Val could only have 500 hrs on it after all these years? Granted Paul divides his time among several other...
Forum: California 10-18-2018, 12:02 PM
Replies: 6
Views: 583
Posted By scsmith
Attitude Aviation in Livermore

Attitude Aviation in Livermore
Forum: RV General Discussion/News 10-18-2018, 12:50 AM
Replies: 15
Views: 994
Posted By scsmith
PLUS 1 Until last year, I had agreed with Carl....

PLUS 1

Until last year, I had agreed with Carl. But then I tried the sleeves. Fantastic. High confidence in a solid joint, fast, easy, no muss, no fuss. I'm a convert.
Forum: RV General Discussion/News 10-15-2018, 10:19 PM
Replies: 15
Views: 1,250
Posted By scsmith
Just to clarify in case that was confusing for...

Just to clarify in case that was confusing for some, the torque is the hanging weight times the length of the wrench to the point where the string is tied plus the weight of the wrench itself times...
Forum: RV General Discussion/News 10-15-2018, 01:50 AM
Replies: 15
Views: 1,250
Posted By scsmith
Yes, that should do nicely. Make sure the...

Yes, that should do nicely. Make sure the pointer is on zero when unloaded, and make sure you apply pressure exactly at the intended spot. Most flex-beam torque wrenches have a handle that is free...
Forum: RV General Discussion/News 10-14-2018, 06:31 PM
Replies: 15
Views: 1,250
Posted By scsmith
I agree with Scott, with the fine tuning that you...

I agree with Scott, with the fine tuning that you would like to know the torque required while turning, not to just get it to start. That much I kind of agree with what Aluminum said. ...
Forum: Traditional Aircraft Engines 10-13-2018, 05:19 PM
Replies: 28
Views: 4,378
Posted By scsmith
I agree. Although your description doesn't...

I agree. Although your description doesn't specifically address wrist pin scuffing. But it is easy to imagine little bits of stuff getting lodged in the pocket at the wrist pin ends and scuffing...
Forum: Traditional Aircraft Engines 10-13-2018, 02:06 PM
Replies: 28
Views: 4,378
Posted By scsmith
Part of the original question....

scoring.

I have a question about wrist-pin scoring on cylinder walls. Can a small amount of light scoring from wrist pins be expected and normal? Or is it always a sign of an issue?
Forum: Traditional Aircraft Engines 10-12-2018, 10:17 PM
Replies: 28
Views: 4,378
Posted By scsmith
16 gph at 75% power? I don't think so.

16 gph at 75% power? I don't think so.
Forum: RV General Discussion/News 10-12-2018, 10:14 PM
Replies: 4
Views: 399
Posted By scsmith
OK, the RV-9A at Siskiyou....Dale Bush is the...

OK, the RV-9A at Siskiyou....Dale Bush is the owner. He will be at the airport on Saturday at noon, showing the RV-7 to a prospective buyer. He is happy to let you look at the RV-9A. You could...
Forum: Electrical Systems 10-12-2018, 07:22 PM
Replies: 10
Views: 807
Posted By scsmith
Wouldn't be easier and safer to install an inline...

Wouldn't be easier and safer to install an inline fuse holder?
Forum: RV General Discussion/News 10-12-2018, 07:19 PM
Replies: 4
Views: 399
Posted By scsmith
There is an RV-9A at Siskiyou Co. Airport, 45 s....

There is an RV-9A at Siskiyou Co. Airport, 45 s. mi. west of Klamath Falls, although it is quite a bit longer drive - no roads go direct. Google Maps says it is 82 road miles via US-97, county rd...
Forum: Traditional Aircraft Engines 10-07-2018, 10:01 PM
Replies: 28
Views: 4,378
Posted By scsmith
cooling baffles!

While you are puzzling over the engine, I think you should focus some attention on why your cylinders got so hot. I immediately suspect you have baffle leaks that you are not aware of. Have you...
Forum: RV General Discussion/News 10-03-2018, 11:44 PM
Replies: 27
Views: 3,149
Posted By scsmith
the article referenced by the home-page story...

the article referenced by the home-page story says, "In class E airspace, IFR traffic is controlled by ATC."

This begs the question, and forgive me, I'm not IFR rated -- but isn't IFR traffic ALWAYS...
Forum: RV General Discussion/News 10-03-2018, 11:15 PM
Replies: 27
Views: 3,149
Posted By scsmith
Not marked as a MOA on the Sectional. That is an...

Not marked as a MOA on the Sectional.

That is an odd thing indeed. Exactly 1 nm wide, and 25 nm long.

Maybe it is a designated Phase I test area for E-AB? I'm joking!!!!

The practical...
Forum: RV-14 10-03-2018, 12:50 AM
Replies: 11
Views: 1,289
Posted By scsmith
You mentioned putting the heated pitot tube in...

You mentioned putting the heated pitot tube in the first rib bay outboard of the wing-walk ribs. It sounds to me that location would be in the propwash.

It is hard to find a place to put a pitot...
Forum: RV General Discussion/News 09-30-2018, 10:43 AM
Replies: 10
Views: 671
Posted By scsmith
Thanks guys. I was asking for a friend who just...

Thanks guys. I was asking for a friend who just bought a nice -7 and the tires show very uneven wear. So I was just wondering.

We will do the measurements, but the expectation based on what you...
Forum: RV General Discussion/News 09-30-2018, 12:44 AM
Replies: 25
Views: 2,266
Posted By scsmith
Gil beat me to it. +1.

Gil beat me to it. +1.
Forum: RV General Discussion/News 09-30-2018, 12:39 AM
Replies: 10
Views: 671
Posted By scsmith
wheel alignment on RV-6,7,9

For the RV-8, it is possible to shim the attachment of the axle to the gear strut to adjust the wheel toe-in.

For an RV-7, or any of the the other round strut RVs, is there any way to adjust the...
Forum: Flight Testing 09-30-2018, 12:29 AM
Replies: 20
Views: 1,363
Posted By scsmith
You are more than welcome, I'm glad it turned out...

You are more than welcome, I'm glad it turned out so well too!
Forum: Flight Testing 09-30-2018, 12:21 AM
Replies: 20
Views: 1,363
Posted By scsmith
Yes, of course! Since induced drag is actually...

Yes, of course! Since induced drag is actually my area of specialization!

Thus listed in the assumptions a constant span efficiency, and why I listed the span and weight in the assumptions. In...
Forum: Flight Testing 09-29-2018, 06:30 PM
Replies: 20
Views: 1,363
Posted By scsmith
I just put together a quickie spreadsheet to...

I just put together a quickie spreadsheet to calculate top speed at various altitudes.

Assumptions:
Span=23 ft
Weight = 1550
Max power =180 Hp
prop efficiency 0.85 (constant)
span efficiency 0.95...
Forum: Flight Testing 09-29-2018, 05:47 PM
Replies: 20
Views: 1,363
Posted By scsmith
This logic would be correct except for two...

This logic would be correct except for two factors. First, as you change altitude, engine power changes in proportion to density. But Profile drag changes in proportion to the square root of the...
Forum: Flight Testing 09-29-2018, 05:29 PM
Replies: 20
Views: 1,363
Posted By scsmith
Well that's because he lived in Colorado, IIRC,...

Well that's because he lived in Colorado, IIRC, so he couldn't test much lower than that even if he wanted to. Does not address what altitude to get the best TAS.
Forum: RV-8/8A 09-28-2018, 07:19 PM
Replies: 10
Views: 1,518
Posted By scsmith
Mine also cruises with no trim, although it is...

Mine also cruises with no trim, although it is just a thin fraction of a ball off. Built to plans. Just the slight weight of my relaxed right foot is enough to keep it perfect. I also found that...
Forum: RV General Discussion/News 09-26-2018, 07:24 PM
Replies: 6
Views: 460
Posted By scsmith
I find this ironic. The only spinner I have ever...

I find this ironic. The only spinner I have ever seen crack at the prop blade cut out was flanged. The flange also adds drag.
Forum: RV-9/9A 09-20-2018, 11:12 AM
Replies: 8
Views: 1,392
Posted By scsmith
I agree! When I had a Citabria, lots of my...

I agree!

When I had a Citabria, lots of my tailwheel friends would kind of scoff and say that it almost didn't count as tailwheel.
Forum: RV General Discussion/News 09-19-2018, 07:37 PM
Replies: 39
Views: 5,038
Posted By scsmith
Andy's prop looked a fair bit smaller in diameter...

Andy's prop looked a fair bit smaller in diameter than Jeff's or Bob Mills'. I assumed the smaller prop allowed higher RPM without transonic tip losses.
Forum: RV General Discussion/News 09-17-2018, 10:41 PM
Replies: 9
Views: 682
Posted By scsmith
Permatex "high tack" or Permatex "Aviation...

Permatex "high tack" or Permatex "Aviation Form-a-gasket" Neither one has ever let me down on exactly this type of application. It is what I have on my RV-8 tank access covers, AND using the...
Forum: Traditional Aircraft Engines 09-11-2018, 01:12 AM
Replies: 19
Views: 2,468
Posted By scsmith
Well, that's true, I don't get afterfires. What...

Well, that's true, I don't get afterfires. What I get is a very rough-running engine. But you are right, I don't get pops and bangs. As you pointed out, with one ignition, it will still burn, it's...
Forum: Traditional Aircraft Engines 09-10-2018, 11:01 PM
Replies: 19
Views: 2,468
Posted By scsmith
Sure, if you are ROP. Try it 60 LOP and see...

Sure, if you are ROP.

Try it 60 LOP and see what happens
Forum: Traditional Aircraft Engines 09-10-2018, 11:00 PM
Replies: 19
Views: 2,468
Posted By scsmith
No doubt this is true ROP. If you are very LOP,...

No doubt this is true ROP. If you are very LOP, not so true at all.
Forum: Primers 09-09-2018, 01:49 AM
Replies: 23
Views: 1,741
Posted By scsmith
It does? Are you sure?

It does? Are you sure?
Forum: Traditional Aircraft Engines 09-09-2018, 01:41 AM
Replies: 19
Views: 2,468
Posted By scsmith
If your mag plugs are fouled badly, you get a...

If your mag plugs are fouled badly, you get a partial misfire even though the LSE plug is firing and lighting the mixture. This is related to an extensive thread on ignition advance and multi-plug...
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