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Search: Posts Made By: scsmith
Forum: RV General Discussion/News 01-13-2022, 07:06 PM
Replies: 51
Views: 7,295
Posted By scsmith
The time required to produce a daily shipping...

The time required to produce a daily shipping document for release would probably be greater than the time to crate a kit. Just adding more overhead. I think the queue will move fastest if everyone...
Forum: RV Building Tips/Techniques 01-10-2022, 06:25 PM
Replies: 11
Views: 435
Posted By scsmith
Thanks to all. Our mast is steel, and the weld...

Thanks to all. Our mast is steel, and the weld looks perfect.

Yes I see now that the location for the screws falls in the area where the wall has been substantially thickened to allow plenty of...
Forum: VAF Classifieds (posts in here deleted after 30 days) 01-10-2022, 04:54 PM
Replies: 2
Views: 193
Posted By scsmith
I have one I would love to sell you. PM'ed.

I have one I would love to sell you. PM'ed.
Forum: RV Building Tips/Techniques 01-10-2022, 01:31 AM
Replies: 11
Views: 435
Posted By scsmith
Thanks Bob.

Thanks Bob.
Forum: RV Building Tips/Techniques 01-09-2022, 09:58 PM
Replies: 11
Views: 435
Posted By scsmith
The question here is whether the shell material...

The question here is whether the shell material is thick enough to cut threads into.

I'm not worried about match-drilling a tap drill hole into it, controlling the depth to just go through the...
Forum: Electrical Systems 01-09-2022, 09:55 PM
Replies: 20
Views: 1,213
Posted By scsmith
Unknown. It was fine on the afternoon flight -...

Unknown. It was fine on the afternoon flight - was a pre-flight item to check tension. (could barely get a finger on it through the cooling inlet IIRC. It was fine for the evening return flight...
Forum: RV Building Tips/Techniques 01-09-2022, 09:47 PM
Replies: 11
Views: 435
Posted By scsmith
Dynon heated pitot/AOA mounting question

I am installing a Dynon heated pitot/AOA probe in our tapered composite wings for Bob Mills' Rocket 6. The Dynon instructions are pretty lean on how to attach the probe body to the mount strut. The...
Forum: Electrical Systems 01-09-2022, 07:45 PM
Replies: 20
Views: 1,213
Posted By scsmith
I had a broken belt on a C-152 early in my ASEL...

I had a broken belt on a C-152 early in my ASEL flying experience, on a night flight too.
Forum: RV Building Tips/Techniques 01-08-2022, 10:30 PM
Replies: 13
Views: 1,258
Posted By scsmith
could you give a rough description of what the...

could you give a rough description of what the surface of the vaccuum box is like. I assume it is porous with holes to allow suction. But would 'big' holes like a Masonite peg-board work? Or are...
Forum: RV-8/8A 01-06-2022, 07:40 PM
Replies: 10
Views: 890
Posted By scsmith
Dan, are we sure that there is enough 'meat' on...

Dan, are we sure that there is enough 'meat' on the standard IO-390-A1B6 sump to allow relocating the studs and opening the hole to mount an FM-200? IF so, this seems a great way to go.
Forum: RV-8/8A 01-05-2022, 10:28 PM
Replies: 10
Views: 890
Posted By scsmith
Well, the engine mount of course. You should...

Well, the engine mount of course. You should plan to put the battery in the back. Hoses are a complete wildcard.

You will probably want to roll your own firewall mount for the oil cooler. Several...
Forum: RV Building Tips/Techniques 01-05-2022, 10:14 PM
Replies: 26
Views: 4,127
Posted By scsmith
Bravo! Nicely done! A bit of microballoons here...

Bravo! Nicely done! A bit of microballoons here and there and it will be beautiful. I think I will copy you when I (perhaps soon) become a repeat offender.
Forum: RV-8/8A 01-04-2022, 07:18 PM
Replies: 32
Views: 10,040
Posted By scsmith
I made the distinction because even the early...

I made the distinction because even the early (pre-2006) fuselage kits are (mostly) pre-punched. I suppose we should just refer to the newer kits as the -1 fuselage, but some may not know what that...
Forum: Temp / Test / Misc. (posts deleted after 2 weeks) 01-04-2022, 06:44 PM
Replies: 58
Views: 3,547
Posted By scsmith
Congrats. I highly recommend it!

Congrats. I highly recommend it!
Forum: RV-8/8A 01-03-2022, 08:30 PM
Replies: 9
Views: 1,046
Posted By scsmith
Greg Hughes says the new -1 matched-hole kit...

Greg Hughes says the new -1 matched-hole kit baggage door is much easier to build well. The older kits took quite a bit of fiddling, and ideally a shrinker, to get everything just right for a good...
Forum: RV-8/8A 01-03-2022, 03:55 PM
Replies: 32
Views: 10,040
Posted By scsmith
Thanks Greg, that is very helpful. I wonder if...

Thanks Greg, that is very helpful.

I wonder if there are any builders still working on the earlier kits that might still want a baggage door? Or would the market be pretty much only be for the new...
Forum: RV-8/8A 01-03-2022, 01:49 PM
Replies: 32
Views: 10,040
Posted By scsmith
Question: Is the fuselage contour in the...

Question: Is the fuselage contour in the vicinity of the baggage door the same on the -1 matched-hole fuselage kits as the earlier kits?

This might be a product that HP Aircraft LLC would be...
Forum: RV-3 12-31-2021, 07:18 PM
Replies: 15
Views: 1,276
Posted By scsmith
I agree on all counts! I am really happy with my...

I agree on all counts!

I am really happy with my Tail Lynx.
Forum: Electronic Ignition Systems 12-31-2021, 07:11 PM
Replies: 5
Views: 838
Posted By scsmith
I have a lightspeed on the left and a slick mag...

I have a lightspeed on the left and a slick mag on the right. I start on the lightspeed only. The mag is not impulse coupled.

If the base timing on the Lightspeed is more advanced than the mag,...
Forum: Alternative Engines 12-30-2021, 10:54 PM
Replies: 801
Views: 216,856
Posted By scsmith
Having high pressure inside the cowl is a really...

Having high pressure inside the cowl is a really good thing. The trick is to take that pressure and get thrust from it by designing the cowl exit properly to convert that pressure into momentum.
Forum: Traditional Aircraft Engines 12-29-2021, 07:57 PM
Replies: 10
Views: 726
Posted By scsmith
One option might be the great o-ring seal system...

One option might be the great o-ring seal system that SDS sells. It was jointly developed by Ross Farnham (SDS) and Mike Robinson (Toobuilder).

You do have to cut the tubes to install the new...
Forum: RV Building Tips/Techniques 12-29-2021, 02:32 PM
Replies: 29
Views: 3,271
Posted By scsmith
paint stripper?

paint stripper?
Forum: My RV Build Project 12-28-2021, 07:44 PM
Replies: 605
Views: 385,809
Posted By scsmith
Wow those are big tires to put on an RV-3! I...

Wow those are big tires to put on an RV-3! I have them on my RV-8 and I love them. But at your substantially lower weight, I would think 500x5 would be more than adequate.
Forum: RV-4 12-21-2021, 12:25 PM
Replies: 18
Views: 1,380
Posted By scsmith
Ah-hem.....yes John Roncz did design the RV-9...

Ah-hem.....yes John Roncz did design the RV-9 airfoil. But as Bob K mentioned the RV10/14 airfoil is mine. Reducing pitching moment is a benefit, as you describe, except that all these airfoils...
Forum: RV-4 12-21-2021, 12:35 AM
Replies: 18
Views: 1,380
Posted By scsmith
Not sure you could even measure the drag...

Not sure you could even measure the drag difference in any case, but the degree of flushness depends somewhat on your workmanship and time investment. The recess is approximately the same depth as...
Forum: RV-4 12-20-2021, 03:53 PM
Replies: 18
Views: 1,380
Posted By scsmith
The light cavity is sized to accept the AeroLEDs...

The light cavity is sized to accept the AeroLEDs Pulsar modules. The FlyLED's fellow has developed a kit for these tips and I believe the first set is in the mail to Bob K.

Here are a couple of...
Forum: RV-4 12-20-2021, 03:49 PM
Replies: 18
Views: 1,380
Posted By scsmith
We periodically post updates on the tapered...

We periodically post updates on the tapered composite wing project in a separate thread, but we are probably overdue. We have closed the wings, and chased all but one fuel tank leak. Should have...
Forum: RV-4 12-19-2021, 11:22 AM
Replies: 18
Views: 1,380
Posted By scsmith
The HP Aircraft LLC short tips are now shipping...

The HP Aircraft LLC short tips are now shipping with provision for lights (nav + strobe). The set that Bob made for me are super light, since they are just 2 plies of 12 oz Knytex. I weighed them...
Forum: RV Building Tips/Techniques 12-18-2021, 08:35 PM
Replies: 3
Views: 589
Posted By scsmith
For any tap other than 6-32 I do this too. 6-32...

For any tap other than 6-32 I do this too. 6-32 is probably the weakest tap, and for those, I just start it in the lathe, then take it out and turn it carefully by hand.

Back in the day, we had a...
Forum: RV-7/7A 12-15-2021, 01:41 PM
Replies: 8
Views: 676
Posted By scsmith
OP asked about fit on the IO-360-A1A and got info...

OP asked about fit on the IO-360-A1A and got info back on a bunch of different engines.

I have an IO-360-A1A and I have the NL starter. Fits great. I did cut off one lug IIRC.

I do not have a...
Forum: RV-4 12-14-2021, 02:47 PM
Replies: 5
Views: 483
Posted By scsmith
It seems like most of the other models specify...

It seems like most of the other models specify edge distance of 5/8" there (to the center of the hole). That would help you a little.

The edge distance dimension is shown on a drawing that is...
Forum: Traditional Aircraft Engines 12-12-2021, 04:34 PM
Replies: 26
Views: 2,555
Posted By scsmith
I did not know that. It puzzles me why the...

I did not know that. It puzzles me why the combination of higher displacement AND the higher CR does not produce more power.

390/360 * 200= 216 even at the same CR.
With a CR of 8.9:1, why...
Forum: Safety 12-06-2021, 10:46 PM
Replies: 79
Views: 5,720
Posted By scsmith
cross-wind entries

being beyond the departure end of the runway feels really silly when the runway is 11,000 ft long. Mid-field cross-wind entry starts to make a lot of sense.

I see many 45-entries flown on a...
Forum: RV General Discussion/News 12-02-2021, 06:53 PM
Replies: 33
Views: 5,995
Posted By scsmith
New tips

I know the OP said he didn't want to change wingtips, but one solution for this lens issue is to switch to the new short wingtips from HP Aircraft LLC. Non-lighted tips are shipping now, and tips...
Forum: Electronic Ignition Systems 12-02-2021, 12:06 PM
Replies: 37
Views: 5,331
Posted By scsmith
Thanks. Good to know.

Thanks. Good to know.
Forum: Electronic Ignition Systems 12-01-2021, 01:44 PM
Replies: 37
Views: 5,331
Posted By scsmith
Likely. Although, Bob has a cold-air induction...

Likely. Although, Bob has a cold-air induction manifold that is super open and all cylinders have very similar shape and length tubes. I can't attest that they are all the same length though, which...
Forum: Electronic Ignition Systems 12-01-2021, 01:40 PM
Replies: 37
Views: 5,331
Posted By scsmith
Thanks Larry, that is super helpful. I never dug...

Thanks Larry, that is super helpful. I never dug inside one.
Forum: Electronic Ignition Systems 12-01-2021, 12:55 AM
Replies: 37
Views: 5,331
Posted By scsmith
Ross, why is there a difference between AV and PV...

Ross, why is there a difference between AV and PV for the same CR? I'm guessing there is a different combustion chamber shape that goes along with the different valve orientation? And the...
Forum: RV-8/8A 11-25-2021, 10:12 AM
Replies: 32
Views: 10,040
Posted By scsmith
Mostly, but not entirely. Epoxy is pretty much...

Mostly, but not entirely. Epoxy is pretty much liquid-water proof, but not gas-impermeable. So over time in humid environments, enough water vapor can diffuse into the carbon-epoxy laminate to...
Forum: RV General Discussion/News 11-24-2021, 11:52 PM
Replies: 17
Views: 1,755
Posted By scsmith
I guess you know you have been flying a long time...

I guess you know you have been flying a long time when you have to buy your third parachute.
Forum: Safety 11-22-2021, 11:01 PM
Replies: 15
Views: 1,526
Posted By scsmith
We had a three-board set-up at Sky Sailing years...

We had a three-board set-up at Sky Sailing years ago. Pretty much a daytime only thing, but pretty useful. Maybe with enough reflective tape and a pilot-activated flood light it could be seen a...
Forum: RV General Discussion/News 11-21-2021, 10:49 PM
Replies: 10
Views: 1,430
Posted By scsmith
Names for things

So you hit one of my peeves. We use names for things to communicate clearly. It works best when we use the correct names.

plate nut, or nut plate? (Plate nut is correct)

Sorry for the thread...
Forum: Traditional Aircraft Engines 11-21-2021, 10:43 PM
Replies: 4
Views: 767
Posted By scsmith
If you go, ask them about re-grinding crankshafts.

If you go, ask them about re-grinding crankshafts.
Forum: Flight Testing 11-21-2021, 10:04 PM
Replies: 30
Views: 4,489
Posted By scsmith
Bob is correct on both counts. 1) I think at...

Bob is correct on both counts.

1) I think at that altitude, you might find a slightly better performance from zero flap than -3. Someone please try it and report back.

2) I recall from my...
Forum: RV Building Tips/Techniques 11-17-2021, 07:29 PM
Replies: 6
Views: 1,032
Posted By scsmith
Its a little close, but I think you will be OK. ...

Its a little close, but I think you will be OK. I have just about a 1/2" clearance at the top. You will have to open up the cut-out to maintain 5/8" gap to the tire.
Forum: RV Building Tips/Techniques 11-17-2021, 01:10 PM
Replies: 37
Views: 3,361
Posted By scsmith
There are varying qualities of carbon uni-tape,...

There are varying qualities of carbon uni-tape, but none have the ridge that woven glass tapes have. They use a cross stitch of polyester thread to hold the unidirectional fiber bundles together. ...
Forum: RV Building Tips/Techniques 11-17-2021, 01:04 PM
Replies: 37
Views: 3,361
Posted By scsmith
Ah good to know, thanks.

Ah good to know, thanks.
Forum: RV Building Tips/Techniques 11-16-2021, 02:00 PM
Replies: 37
Views: 3,361
Posted By scsmith
Its been a long time, but I think I used 0.040"...

Its been a long time, but I think I used 0.040" for the strips. (might be 0.032").

I got everything fit with straight strips, then came back and added scallops afterward. One advantage along the...
Forum: RV-7/7A 11-14-2021, 04:15 PM
Replies: 44
Views: 8,174
Posted By scsmith
Mickey, we generally have one pair of lights...

Mickey, we generally have one pair of lights aimed for flight attitude, and one pair aimed low to hit the ground when taxiing. Controlled by separate circuits
Forum: RV-7/7A 11-10-2021, 10:28 PM
Replies: 44
Views: 8,174
Posted By scsmith
Another wingtip option

And by now hopefully most people are aware that there is yet another option for wingtips for your RV-4,6,7,8.

HP Aircraft LLC is making "minimum wetted area" wingtips that take almost 14 sq ft of...
Forum: RV General Discussion/News 11-10-2021, 12:15 AM
Replies: 17
Views: 2,368
Posted By scsmith
Isn't Milbar supposed to be the top-of-the-line...

Isn't Milbar supposed to be the top-of-the-line brand for safety wire pliers? I was thinking about buying one of the smaller, one-hand operation ones. But if that is a testament to their quality...
Forum: RV General Discussion/News 11-08-2021, 07:00 PM
Replies: 21
Views: 4,009
Posted By scsmith
I finally got around to the project of re-doing...

I finally got around to the project of re-doing my oil cooler air supply. My previous installation was kind of marginal, and would not have supplied enough air as I start to close down the cowl...
Forum: Electrical Systems 11-05-2021, 11:25 PM
Replies: 10
Views: 1,046
Posted By scsmith
I confess to looking for a zebra in a horse...

I confess to looking for a zebra in a horse corral here, (meaning, a wild obscure idea where there is probably a simpler explanation) :

but is there any chance that the ground path (meaning the...
Forum: RV General Discussion/News 11-04-2021, 05:43 PM
Replies: 53
Views: 6,400
Posted By scsmith
And if a patent was issued, it may have expired...

And if a patent was issued, it may have expired by now?
Forum: RV General Discussion/News 11-04-2021, 05:07 PM
Replies: 6
Views: 763
Posted By scsmith
This type of stacking hangar door system would be...

This type of stacking hangar door system would be pretty easy to DIY. You could probably buy the little trolley wheels and use U-channel for a track.

17846
Forum: RV-8/8A 10-22-2021, 01:50 PM
Replies: 38
Views: 12,880
Posted By scsmith
These are the prettiest extensions I've seen. ...

These are the prettiest extensions I've seen. Very nice finish work. Looks totally professional. Mine are functionally similar, but nowhere near as pretty!
Forum: RV-7/7A 10-21-2021, 07:22 PM
Replies: 47
Views: 9,568
Posted By scsmith
Nice! How did you get the 'before' data? It...

Nice!

How did you get the 'before' data? It does not appear to be the same as the 'before' data you reported on with the original narrow aluminum prototype. Did you remove the first one, fly,...
Forum: RV-8/8A 10-20-2021, 07:31 PM
Replies: 38
Views: 12,880
Posted By scsmith
just another data point

just to add another data point, I made lower extensions similar to what Randy Lervold did. I bent them aft so that it changes the effective angle of the pedal to be less upright.

To me, this...
Forum: RV-8/8A 10-18-2021, 01:11 PM
Replies: 9
Views: 776
Posted By scsmith
Wow!

They are expensive!
Forum: Job Board 10-13-2021, 07:36 PM
Replies: 12
Views: 3,225
Posted By scsmith
Any plan to replace the missing fan blades?

Any plan to replace the missing fan blades?
Forum: Tools 10-09-2021, 06:58 PM
Replies: 10
Views: 1,319
Posted By scsmith
Gee, that is a really strange comment. Every...

Gee, that is a really strange comment. Every device that has a D-sub connector on the back of it gets its power and ground through that connector. Garmin boxes have special longer, heavier pins that...
Forum: Tools 10-08-2021, 08:55 PM
Replies: 10
Views: 1,319
Posted By scsmith
What about crimping the bigger power input and...

What about crimping the bigger power input and ground pins for D-sub? Surely these need a different crimper die? The bigger power and ground pins are like $2 each from Garmin!?!?!
Forum: RV General Discussion/News 10-08-2021, 12:42 PM
Replies: 27
Views: 4,048
Posted By scsmith
Wow! Not the news I expected to find on a Friday...

Wow! Not the news I expected to find on a Friday morning. Kevin, please stay connected to the VAF family regardless of what airplane(s) you end up with. You are one of the mainstays of core...
Forum: RV General Discussion/News 10-04-2021, 05:58 PM
Replies: 11
Views: 2,872
Posted By scsmith
stall speed

There have been quite a few people with questions about the change in stall speed. Comparing the short tips to the Hoerner tips, the change in wing area is 6%, so the change in stall speed will be...
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