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Search: Posts Made By: scsmith
Forum: Electrical Systems 05-20-2018, 11:21 AM
Replies: 196
Views: 8,718
Posted By scsmith
A slight thread drift (sorry) but a couple of...

A slight thread drift (sorry) but a couple of Michael's points here are thought provoking. The idea of being a good maintainer, and the observation that wire bundles are generally very...
Forum: RV General Discussion/News 05-17-2018, 07:32 PM
Replies: 26
Views: 1,674
Posted By scsmith
Nice recovery. That looks fine. As others have...

Nice recovery. That looks fine. As others have said, some think time is good. And as you go, you will get better at both avoiding mistakes and coming up with creative recoveries.
Forum: RV General Discussion/News 05-17-2018, 06:33 PM
Replies: 17
Views: 646
Posted By scsmith
Good to know. I do need 240V. Too bad the...

Good to know. I do need 240V. Too bad the parallel setups can't be run 180 degrees out of phase to produce 240V.
Forum: RV General Discussion/News 05-17-2018, 06:31 PM
Replies: 17
Views: 646
Posted By scsmith
An interesting concept. My old tractor would go...

An interesting concept. My old tractor would go through diesel pretty fast doing this. I guess the output frequency depends on tractor PTO rpm? I doubt I could set rpm to within a couple of...
Forum: RV General Discussion/News 05-17-2018, 01:26 PM
Replies: 17
Views: 646
Posted By scsmith
That is a big help Mike. Now I understand why...

That is a big help Mike. Now I understand why the Honda is so much more money. It is an inverter generator, true sine wave output. They can also be paralleled.

Thanks to Raymo and Lenny too. ...
Forum: RV General Discussion/News 05-17-2018, 11:28 AM
Replies: 17
Views: 646
Posted By scsmith
OT portable generator waveform?

I'm sorry this is a stretch to call it RV-related, except that people may use portable generators for power in their hangars where their RVs are kept. But I wanted to try to tap into the expertise...
Forum: Electrical Systems 05-17-2018, 11:14 AM
Replies: 196
Views: 8,718
Posted By scsmith
For the record:

This quote, well, almost, was originally from Ed Heinemann of Douglas Aircraft.
It was said during a prelinary design review for the Douglas A4D. The actual quote was, "simplicate, and add lightness"
Forum: Electrical Systems 05-11-2018, 10:57 PM
Replies: 3
Views: 495
Posted By scsmith
I am also interested to hear what anyone has...

I am also interested to hear what anyone has found in the way of LEDs for MR16 sockets. I replaced my Vans halogen bulbs with HID bulbs, but those are no longer available. :(
Forum: Electrical Systems 05-10-2018, 11:18 AM
Replies: 196
Views: 8,718
Posted By scsmith
That may be so. But it doesn't answer my...

That may be so. But it doesn't answer my question. How can you claim this to be a redundant system (triple redundant on your website) when its all in one box?

The "home brew solution" you are...
Forum: RV-14 05-09-2018, 11:32 AM
Replies: 9
Views: 822
Posted By scsmith
We are not talking about a 37-degree flare here.

We are not talking about a 37-degree flare here.
Forum: Oregon 05-09-2018, 10:46 AM
Replies: 10
Views: 1,188
Posted By scsmith
Farther south, Gold Beach is a good destination. ...

Farther south, Gold Beach is a good destination. airport is easy walk to beach and town. Bandon, the airport is a ways out of town, but they may still have a rental car or courtesy car, not sure.
Forum: Electrical Systems 05-08-2018, 11:32 PM
Replies: 196
Views: 8,718
Posted By scsmith
I'm kind of late to this conversation, and...

I'm kind of late to this conversation, and learning as I go. But it strikes me oddly to have a single box that performs lots of functions, including essential ones, and claim redundancy or added...
Forum: RV-8/8A 05-07-2018, 05:56 PM
Replies: 72
Views: 39,363
Posted By scsmith
As shown in the original post where we did the...

As shown in the original post where we did the strength tests, the bad nuts are NAS679A6. The good nuts are NAS1804-6.

The origin and history of the NAS679 nuts I believes goes back to the...
Forum: RV-8/8A 05-06-2018, 10:20 AM
Replies: 72
Views: 39,363
Posted By scsmith
Steve, the -8 is the only model with a flat steel...

Steve, the -8 is the only model with a flat steel (or Grove aluminum) gear strut that is bolted to the fuselage with steel saddle clamps. All the other models have round steel gear that engage...
Forum: RV-8/8A 05-05-2018, 11:28 PM
Replies: 72
Views: 39,363
Posted By scsmith
<xxxx> For new-comers that may not have seen our...

<xxxx> For new-comers that may not have seen our tests a few years ago, and unfortunately are still using the horrible stamped lightweight nuts that Vans supplies (or at least used to supply),...
Forum: RV-6/6A 05-03-2018, 10:35 PM
Replies: 4
Views: 1,063
Posted By scsmith
A little curious how you achieve 24 squared at...

A little curious how you achieve 24 squared at 8,000 ft. Std pressure at 8,000 ft is about 22 in. hg.
Forum: Alternative Engines 04-25-2018, 10:35 PM
Replies: 25
Views: 3,743
Posted By scsmith
Wow!...........

Wow!...........
Forum: RV Ongoing Maintenance Issues 04-25-2018, 10:32 PM
Replies: 10
Views: 1,665
Posted By scsmith
Your valve looks just like mine, no issues,...

Your valve looks just like mine, no issues, EXCEPT, what is going on at the very top of the first picture? Maybe that's just a shadow? It doesn't have the halo colors of a burned valve.

fingers...
Forum: RV-4 04-23-2018, 12:29 AM
Replies: 3
Views: 465
Posted By scsmith
I just got some replacement hardware from Rick...

I just got some replacement hardware from Rick Robbins yesterday.
quick friendly service if you call him by phone.
Forum: RV General Discussion/News 04-22-2018, 07:31 PM
Replies: 11
Views: 1,159
Posted By scsmith
You could easily make your own using two sizes of...

You could easily make your own using two sizes of hole saws. Cut the big hole first, then cut the small hole in the disc. Holding onto it is a little tricky - maybe make some plywood plates to...
Forum: RV General Discussion/News 04-22-2018, 07:29 PM
Replies: 20
Views: 1,283
Posted By scsmith
Yes, I think if you etch/alodine after dishwasher...

Yes, I think if you etch/alodine after dishwasher detergent, it will take off the surfactant film.

Dawn dish soap is great.

Alodine is very good treatment, no question. It is just a very bad...
Forum: RV General Discussion/News 04-22-2018, 07:25 PM
Replies: 20
Views: 1,283
Posted By scsmith
And how are going to dispose of the used Alodine?...

And how are going to dispose of the used Alodine? NASTY STUFF! PLEASE DO NOT POUR IT DOWN THE DRAIN
Forum: California 04-22-2018, 07:24 PM
Replies: 14
Views: 971
Posted By scsmith
Thanks Bruce, that is a great suggestion. The...

Thanks Bruce, that is a great suggestion. The mid-AM stratus was also a concern.
Forum: California 04-22-2018, 06:02 PM
Replies: 14
Views: 971
Posted By scsmith
I've been thinking about a similar trip,...

I've been thinking about a similar trip, approaching from the north. To avoid flying across downtown, it looks like the two options are to stay out off shore (no thanks), or stay well inland and go...
Forum: RV General Discussion/News 04-22-2018, 05:56 PM
Replies: 20
Views: 1,283
Posted By scsmith
All good thoughts from everyone on achieving...

All good thoughts from everyone on achieving adhesion of the primer, which was never a worry. (although I think the dishwasher detergent is a bad idea).

What I was worried about was getting a good...
Forum: RV General Discussion/News 04-21-2018, 08:19 PM
Replies: 20
Views: 1,283
Posted By scsmith
PreKote placebo?

We had to prime a whole bunch of aluminum parts for the stub spars and flap and aileron hinges for our tapered composite RV wings.

I really did not want to use alodine because of the severe...
Forum: RV General Discussion/News 04-19-2018, 05:40 PM
Replies: 20
Views: 1,754
Posted By scsmith
Ah thanks Scott, that makes sense. Both your...

Ah thanks Scott, that makes sense.

Both your points are why I used one of these

http://www.tcwtech.com/control_valve_servo_kit.html
on my firewall mounted cooler. The throttle valve is flanged and...
Forum: RV General Discussion/News 04-19-2018, 12:16 PM
Replies: 20
Views: 1,754
Posted By scsmith
Why should it matter whether you throttle the...

Why should it matter whether you throttle the flow at the inlet side rather than the outlet side of the cooler? The only reason I could see is significant leakage around the perimeter of the louver...
Forum: Electronic Ignition Systems 04-17-2018, 05:19 AM
Replies: 11
Views: 1,088
Posted By scsmith
Bill, could you elaborate on your issue with...

Bill, could you elaborate on your issue with lower center baffle seal plate?

I assume you are talking about the intercylinder baffle? It is a complex shape part under the cylinder, held in place...
Forum: Trip Write-ups 04-15-2018, 07:00 PM
Replies: 24
Views: 2,040
Posted By scsmith
I guess the trick is defining what the "base"...

I guess the trick is defining what the "base" is.
Forum: Trip Write-ups 04-15-2018, 05:33 PM
Replies: 24
Views: 2,040
Posted By scsmith
Wow, it looks so different from the southeast...

Wow, it looks so different from the southeast than it does from the northwest.

Can you explain the claim of tallest land-based mountain on earth? Why wouldn't Everest be?
Forum: Traditional Aircraft Engines 04-14-2018, 09:50 PM
Replies: 21
Views: 2,413
Posted By scsmith
plus 1 for Deakien

Read through all the Pelican Brief articles by Deakin.

You could have been doing LOP after 3--5 hrs. But better start now!
Forum: RV-8/8A 04-10-2018, 11:57 AM
Replies: 31
Views: 5,249
Posted By scsmith
The ramp surface of your sub cowl is separated...

The ramp surface of your sub cowl is separated because the angle is too steep, so there is too much adverse pressure gradient.

I trust that the leading edge of your sub cowl blends smoothly into the...
Forum: RV-7/7A 03-29-2018, 12:15 PM
Replies: 40
Views: 6,799
Posted By scsmith
I'm pretty sure the O-320 mount is a drop-in...

I'm pretty sure the O-320 mount is a drop-in replacement.
I'm also pretty sure there is enough extra fiberglass on the IO-360 cowl as delivered to reach the extra 2". If it isn't it is very easy to...
Forum: RV-14 03-25-2018, 01:57 PM
Replies: 25
Views: 4,177
Posted By scsmith
I've always been surprised by how low the torque...

I've always been surprised by how low the torque specs for AN bolts are compared to similar strength and size bolts in general engineering application. It is true they are predominantly used in...
Forum: RV General Discussion/News 03-23-2018, 12:16 AM
Replies: 18
Views: 1,129
Posted By scsmith
I'm sorry Larry, but this is simply false. The...

I'm sorry Larry, but this is simply false. The taper forces the faces of the threads into intimate contact, and at that point, when the thread faces seat against each other, the roots and tips of the...
Forum: RV General Discussion/News 03-22-2018, 05:01 PM
Replies: 18
Views: 1,129
Posted By scsmith
No, it can not be liquid tight without sealant. ...

No, it can not be liquid tight without sealant. The tapered threads still have helical leak paths at the roots and crests of the threads, because you can not cut a thread precisely enough that will...
Forum: RV General Discussion/News 03-19-2018, 08:30 PM
Replies: 19
Views: 2,351
Posted By scsmith
Thanks Scott, that makes sense. I think I will...

Thanks Scott, that makes sense. I think I will order a set. I have a feeling that Bill's observation explains my slow leak, not an incomplete RTV seal around the backside of the rivet with tube...
Forum: RV General Discussion/News 03-19-2018, 08:28 PM
Replies: 19
Views: 2,351
Posted By scsmith
Thanks Bill! That may well explain the very...

Thanks Bill! That may well explain the very slow leak that I have been ignoring for years and gave up on. I think I will try getting rid of those barb fittings.
Forum: RV General Discussion/News 03-14-2018, 09:13 PM
Replies: 19
Views: 2,351
Posted By scsmith
I have the rivet type. I've been thinking about...

I have the rivet type.
I've been thinking about making some ports myself that replicate the rivet profile but with a thread for a nut on the inside and a barb fitting to fit the 1/8" tubing.

I just...
Forum: GPS 03-10-2018, 07:01 PM
Replies: 22
Views: 2,125
Posted By scsmith
Ah, yes, I remember now. What I stated above is...

Ah, yes, I remember now. What I stated above is not true. (post deleted) The base plate is not threaded. The screws pass through from above and get nuts on the underside. So yes, I can see that...
Forum: RV-14 02-26-2018, 07:15 PM
Replies: 18
Views: 1,699
Posted By scsmith
chord, not cord

Hey guys, hate to be persnickety, but the mid-line through an airfoil that bisects the trailing edge angle is the chord line, not spelled cord.

A cord is a rubber thing with wires in it to supply...
Forum: RV Ongoing Maintenance Issues 02-18-2018, 03:21 AM
Replies: 38
Views: 4,673
Posted By scsmith
I'm sorry, but I just can not resist a...

I'm sorry, but I just can not resist a light-hearted joke. I see this thread title show up periodically as a new post is made, and each time I see it, I have the same reaction:

"Engine missing -...
Forum: RV General Discussion/News 02-12-2018, 05:20 PM
Replies: 33
Views: 2,214
Posted By scsmith
It would seem pretty difficult to get any water...

It would seem pretty difficult to get any water in there. The vent tube starts out as high as it can get in the tank - water would never float up into that corner to get carried into the vent...
Forum: RV-8/8A 02-08-2018, 12:06 PM
Replies: 8
Views: 908
Posted By scsmith
Where?

where do these thrust washers go? I don't remember making these.
Forum: RV General Discussion/News 02-07-2018, 10:45 AM
Replies: 15
Views: 1,799
Posted By scsmith
Good going!

Good going!
Forum: RV-9/9A 02-07-2018, 10:42 AM
Replies: 16
Views: 1,468
Posted By scsmith
A couple of issues to think about in adding to...

A couple of issues to think about in adding to the fuel tank on the inboard end:

1) if you shift the whole tank outboard, all of the match-drilled attachment screws, and the z-brackets, may not line...
Forum: RV-7/7A 02-03-2018, 12:22 PM
Replies: 9
Views: 885
Posted By scsmith
Cooler exit diffuser

If I ever re-do my firewall, or build another one, I will do something kind of similar to what Dan did. I will mount the cooler at 90 degrees to the firewall, and then make an exit diffuser for...
Forum: RV-7/7A 02-03-2018, 12:15 PM
Replies: 9
Views: 885
Posted By scsmith
Nicely done. Did you custom make the 3.5" to 4"...

Nicely done. Did you custom make the 3.5" to 4" transition or were you able to buy that?
Forum: RV-7/7A 02-02-2018, 07:22 PM
Replies: 9
Views: 885
Posted By scsmith
There was room on my -8 to mount it on the...

There was room on my -8 to mount it on the firewall. I made my own mount patterned after the RV-10 firewall mount, but adjusted the angle so the face of the cooler is parallel to the motor mount...
Forum: Oregon 01-24-2018, 05:03 PM
Replies: 2
Views: 519
Posted By scsmith
I live in Talent, my RV-8 is at the Ashland...

I live in Talent, my RV-8 is at the Ashland airport. Happy to get together any time to help/make suggestions/answer questions. Send me PM or email and I will send you my phone #

I built my...
Forum: RV-8/8A 01-19-2018, 07:12 PM
Replies: 7
Views: 1,042
Posted By scsmith
A different support strut

Laz,
there is another type of baggage door support that you might be interested in.
It is basically a tightly wound coil spring with little brackets on each end. You put one bracket on the door, one...
Forum: RV Building Tips/Techniques 01-18-2018, 12:14 PM
Replies: 64
Views: 6,924
Posted By scsmith
But of course, brittle fracture can occur at a...

But of course, brittle fracture can occur at a flaw at stresses WAY less than normal tensile strength. Its like the stress concentration were in the thousands. I'm having a hard time finding data...
Forum: RV-8/8A 01-16-2018, 12:03 PM
Replies: 25
Views: 3,707
Posted By scsmith
I've thought about it a lot. I put in four hard...

I've thought about it a lot. I put in four hard points in the belly using the wing tie-down extrusion, riveted to the under-floor ribs. I currently have flat-head screws plugging the holes where...
Forum: RV-12 01-16-2018, 11:53 AM
Replies: 26
Views: 4,697
Posted By scsmith
What is a screw clamp?

What is a screw clamp?
Forum: ADS-B 01-12-2018, 04:27 PM
Replies: 87
Views: 16,355
Posted By scsmith
I guess I don't know what that means. I didn't...

I guess I don't know what that means. I didn't think you could have a reservation prior to installing the unit. They just started shipping a few weeks ago, after the note you quote was posted. So...
Forum: ADS-B 01-12-2018, 04:04 PM
Replies: 87
Views: 16,355
Posted By scsmith
Oh! I was under the impression that the rebates...

Oh! I was under the impression that the rebates were all used up. Are there still rebates?

I'm eagerly awaiting my GDL-82 arrival.
Forum: RV Building Tips/Techniques 01-12-2018, 03:56 PM
Replies: 38
Views: 12,706
Posted By scsmith
Thanks Scott, great informative write-up. As I...

Thanks Scott, great informative write-up.

As I read along, I kept hoping for the big surprise that the filler material would in fact become transparent. I wonder if there is a product that would...
Forum: RV-14 01-02-2018, 05:33 PM
Replies: 17
Views: 3,524
Posted By scsmith
I did just about the same thing.

I did just about the same thing.
Forum: RV General Discussion/News 12-31-2017, 01:38 PM
Replies: 48
Views: 17,283
Posted By scsmith
Next steps:

The next step will be to remove the upper skin, and install the corner tapes where the ribs bond to the lower skin. We will do some clean-up on the raw edges of the bond flange tapes that were molded...
Forum: RV General Discussion/News 12-31-2017, 12:25 PM
Replies: 48
Views: 17,283
Posted By scsmith
Additional progress

Bob, nice job catching everyone up. all the pictures look great too.

I thought I would add just a few more details and additional progress.

First, we were not very outspoken about it and some...
Forum: RV-8/8A 12-30-2017, 01:39 PM
Replies: 33
Views: 9,546
Posted By scsmith
handle on RV-8 roll bar

I have one, in the left-side position. I use it every time I get in and out.

My back seaters often use it too. That would not be the case for an -8A, only-8s because of the nose high attitude,...
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