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Search: Posts Made By: DanH
Forum: RV General Discussion/News Today, 07:51 AM
Replies: 19
Views: 1,494
Posted By DanH
Apparently not. Look, here's the message again,...

Apparently not. Look, here's the message again, in case it zoomed by the first time.

There is some risk, and you should know a fair bit of thought went into the decision to hold the event. The...
Forum: RV-8/8A Today, 07:00 AM
Replies: 10
Views: 567
Posted By DanH
I know your pain ;) Two easy mods, sketches...

I know your pain ;)

Two easy mods, sketches below.

Cut down the sides of the pedals near the top where they taper inwards.

Cut two short lengths of aluminum tube as shown. Attach them to the...
Forum: RV General Discussion/News 05-09-2021, 02:14 PM
Replies: 19
Views: 1,494
Posted By DanH
Bob, do you have some specific objection to a...

Bob, do you have some specific objection to a host encouraging vaccination for the good of the community, given very, very few will be wearing a mask at this event?
Forum: RV General Discussion/News 05-09-2021, 11:12 AM
Replies: 19
Views: 1,494
Posted By DanH
Spectacular formation shot (with credit to Shawna...

Spectacular formation shot (with credit to Shawna Redden...go girl!):

https://www.danhorton.net/Misc/Shawna%20Malvini%20Redden%20Shot.jpg

A formation is based on trust. No matter how any one pilot...
Forum: Electronic Ignition Systems 05-09-2021, 10:31 AM
Replies: 39
Views: 2,027
Posted By DanH
Probably not. Over time, the various human...

Probably not. Over time, the various human operators will arguably be the least reliable items in the loop, so keeping all factors the same for both ignitions is desirable.
Forum: Electronic Ignition Systems 05-08-2021, 12:55 PM
Replies: 39
Views: 2,027
Posted By DanH
I was rather amused to learn (a recent thread) a...

I was rather amused to learn (a recent thread) a P-mag could be failed simply by disconnecting a ground wire.
Forum: RV-14 05-08-2021, 06:58 AM
Replies: 30
Views: 1,839
Posted By DanH
Sure, normal. It's not just an RV thing either. ...

Sure, normal. It's not just an RV thing either. Just for fun, trim a C-182 for 80 knots, then add full throttle and see if you can hold the yoke forward with one hand.

Recent thread focusing on...
Forum: Safety 05-08-2021, 06:47 AM
Replies: 11
Views: 3,232
Posted By DanH
Gang, let's wait for the report. Remember, no...

Gang, let's wait for the report. Remember, no speculation.
Forum: RV General Discussion/News 05-08-2021, 06:27 AM
Replies: 19
Views: 1,494
Posted By DanH
Easy to find 1366 W....

Easy to find 1366 W. Waukau!


https://www.danhorton.net/Misc/OSH%20Social%20Map.jpg
Forum: RV General Discussion/News 05-07-2021, 01:38 PM
Replies: 19
Views: 1,494
Posted By DanH
2021 Oshkosh RV Social

https://www.danhorton.net/VAF/Beer%20Fairy/Ber%20Fairy%20Trumpets.jpg


2021 Oshkosh RV Social

Monday July 26th

1366 WEST WAUKAU AVENUE
Forum: RV Ongoing Maintenance Issues 05-06-2021, 10:57 AM
Replies: 18
Views: 943
Posted By DanH
Time out. Yes, AFP sells a 40 micron filter, and...

Time out.

Yes, AFP sells a 40 micron filter, and a 74, but the recommended inline filter prior to the boost pump is a 125 micron unit. The servo inlet has a small 75 micron filter, as does the flow...
Forum: Traditional Aircraft Engines 05-05-2021, 08:02 PM
Replies: 31
Views: 2,693
Posted By DanH
There is plenty of air available. You're giving...

There is plenty of air available. You're giving up deltaP, which determines velocity through the fins, which in turn affects the degree of turbulence at the fin surfaces, thus affecting heat...
Forum: RV General Discussion/News 05-04-2021, 07:22 PM
Replies: 36
Views: 4,323
Posted By DanH
So you believe pressure air can leave the filter...

So you believe pressure air can leave the filter past the anti-drainback, and bubble downhill, then up into the cooler, displacing the oil, all without pushing any oil back to the sump?

Never mind....
Forum: RV General Discussion/News 05-04-2021, 05:06 PM
Replies: 36
Views: 4,323
Posted By DanH
Allen, would you kind enough to explain how a...

Allen, would you kind enough to explain how a cooler can be plumbed backwards?
Forum: RV General Discussion/News 05-04-2021, 05:02 PM
Replies: 36
Views: 4,323
Posted By DanH
In theory, this approach won't drain the cooler,...

In theory, this approach won't drain the cooler, for two reasons.

First, the rubber anti-drainback ring in the filter should seal. You're looking right it every time you cut a filter. See the...
Forum: RV Building Tips/Techniques 05-04-2021, 11:29 AM
Replies: 7
Views: 687
Posted By DanH
Why not just make the mold from nylon, or a...

Why not just make the mold from nylon, or a similar no-stick material?
Forum: RV Ongoing Maintenance Issues 05-04-2021, 06:58 AM
Replies: 2
Views: 200
Posted By DanH
The NAPA 2-29000 now seems to be numbered CRB...

The NAPA 2-29000 now seems to be numbered CRB 229000. Failure simply allows passage of air both ways. Just blow through it when it's off to clean the header tube. Be sure to install two, with...
Forum: Traditional Aircraft Engines 05-03-2021, 05:30 PM
Replies: 31
Views: 3,384
Posted By DanH
Maybe you should. Looks like a good solution...

Maybe you should.



Looks like a good solution to me. Add some adels to fixate the line to the intake pipes

11210
Forum: Fiberglass 05-03-2021, 01:48 PM
Replies: 2
Views: 302
Posted By DanH
Polyester filler will work fine, micro/epoxy even...

Polyester filler will work fine, micro/epoxy even better. Can't ever matter much inside the top cowl.
Forum: Traditional Aircraft Engines 05-03-2021, 11:28 AM
Replies: 31
Views: 3,384
Posted By DanH
Need to reroute so the pump-to-servo line is not...

Need to reroute so the pump-to-servo line is not contacting that motor mount tube. See attached.



Compared to a 45, a 90 increases the leverage applied by the hose. However, clocking makes a...
Forum: RV Ongoing Maintenance Issues 05-03-2021, 08:40 AM
Replies: 6
Views: 717
Posted By DanH
No vacuum in the lower cowl volume, which of...

No vacuum in the lower cowl volume, which of course includes the volume between the accessory case and firewall.

Even vacuum is a poor descriptive. If the upper cowl surface is bowing in due to...
Forum: RV Ongoing Maintenance Issues 05-03-2021, 06:11 AM
Replies: 6
Views: 717
Posted By DanH
Tell us more. Got pictures? Sucked in is...

Tell us more. Got pictures? Sucked in is unlikely...buckling perhaps?
Forum: Places To Fly...Things to See...Things to Eat 05-02-2021, 09:27 AM
Replies: 23
Views: 2,685
Posted By DanH
It was fun! A few of us were standing on the...

It was fun!

A few of us were standing on the ramp laughing about having the same worry on the way to the event...that we might not recognize aviation friends and acquaintances we had not seen in...
Forum: RV General Discussion/News 04-30-2021, 11:22 AM
Replies: 3
Views: 362
Posted By DanH
Royco 782 is an 83282 fluid, entirely compatible...

Royco 782 is an 83282 fluid, entirely compatible with 5606.
Forum: RV-9/9A 04-30-2021, 08:30 AM
Replies: 27
Views: 2,949
Posted By DanH
6" lengths of 3/4" aluminum angle, strung...

6" lengths of 3/4" aluminum angle, strung together in pairs.
Forum: RV-9/9A 04-30-2021, 05:45 AM
Replies: 27
Views: 2,949
Posted By DanH
The rubber galoshes are not needed for grass ops....

The rubber galoshes are not needed for grass ops. They just allow grass ops with pants mounted low to cover the max amount of tire, while sealing the perimeter of the opening. In other words, drag...
Forum: RV-9/9A 04-29-2021, 05:49 PM
Replies: 27
Views: 2,949
Posted By DanH
Yep, same thing, room temperature urethane rubber...

Yep, same thing, room temperature urethane rubber rolled into 9oz plain weave between 4 mil plastic sheets. The trimmed galoshes glue on with a urethane adhesive. There's an old thread somewhere...
Forum: RV-8/8A 04-29-2021, 12:44 PM
Replies: 31
Views: 3,770
Posted By DanH
"Vixen"? She's naughty, but the word ain't...

"Vixen"?

She's naughty, but the word ain't ;)
Forum: RV-8/8A 04-29-2021, 12:15 PM
Replies: 25
Views: 1,621
Posted By DanH
That's nice!

That's nice!
Forum: RV General Discussion/News 04-29-2021, 12:10 PM
Replies: 52
Views: 4,577
Posted By DanH
Gang, it's Oshkosh. At peak times it's only...

Gang, it's Oshkosh. At peak times it's only realistic to assume a mess at the runways, or a mess in the approach path/holds, or both. Best bet is to avoid peak times, or come prepared to perform at...
Forum: RV-9/9A 04-29-2021, 05:31 AM
Replies: 27
Views: 2,949
Posted By DanH
Rubber bottoms. Mold in place then cut away the...

Rubber bottoms. Mold in place then cut away the glass underneath, bond into place. The edges are tight to the tire sidewall.

I operate these with 3/4" ground clearance, everywhere. In rough...
Forum: Traditional Aircraft Engines 04-28-2021, 08:26 AM
Replies: 24
Views: 4,610
Posted By DanH
Don't recall anyone mentioning 15W-50 Aeroshell...

Don't recall anyone mentioning 15W-50 Aeroshell by name...significant percentage synthetic.

https://www.shell.com/business-customers/aviation/aeroshell/piston-engine-oil/w15w50.html
Forum: RV-8/8A 04-28-2021, 05:38 AM
Replies: 25
Views: 1,621
Posted By DanH
Do not cut a hole in the side skin. It would...

Do not cut a hole in the side skin.

It would be all but useless anyway. You will remove the baggage compartment shelf and rear bulkhead at least once a year for a decent inspection. A quick...
Forum: Fiberglass 04-27-2021, 08:56 AM
Replies: 8
Views: 330
Posted By DanH
Given the craftsmanship seen so far, methinks...

Given the craftsmanship seen so far, methinks David will be bothered, and paint it in a month or two ;)
Forum: RV General Discussion/News 04-27-2021, 08:54 AM
Replies: 29
Views: 1,828
Posted By DanH
Anecdotal, but I've had fine screen material...

Anecdotal, but I've had fine screen material formed over the vent tips since new, held in place with a loop of safety wire. I think highly of them.
Forum: RV-8/8A 04-27-2021, 06:09 AM
Replies: 6
Views: 632
Posted By DanH
Just mask it and paint it. Nothing real special....

Just mask it and paint it. Nothing real special.

Tips? Fully finish the inside through primer sealer before bonding the canopy to the outside of the flange, so the inside is totally ready for...
Forum: Traditional Aircraft Engines 04-26-2021, 06:13 AM
Replies: 31
Views: 2,693
Posted By DanH
Yes, absolutely. And you'll find the same...

Yes, absolutely. And you'll find the same opening at the no-fin base of #4.

I seem to recall the baffle kit as having a tab there, which should be bent to close much of the gap. The rest is...
Forum: RV General Discussion/News 04-24-2021, 02:10 PM
Replies: 53
Views: 5,222
Posted By DanH
Sure. The operative word is "pull". Line...

Sure. The operative word is "pull". Line pressure from tank to pump is reduced.

A pump in the tank or very near the outlet, prior to valves and fittings, means no pressure drop. Cars went that...
Forum: RV General Discussion/News 04-24-2021, 08:01 AM
Replies: 52
Views: 4,577
Posted By DanH
Can't say as I blame them. Previous video as a...

Can't say as I blame them. Previous video as a minor example, and to be honest, we do haul lawn chairs to 27 on Sunday afternoon to watch the excitement.

You know, it's possible to make a...
Forum: RV General Discussion/News 04-24-2021, 06:45 AM
Replies: 53
Views: 5,222
Posted By DanH
Small factor, very small in our application. ...

Small factor, very small in our application. For RVs, the large bore of interest is the 390. I think its omission from the mogas list is due to slightly higher compression ratio (8.9 vs the 360's...
Forum: RV-12/RV-12iS 04-23-2021, 08:17 PM
Replies: 19
Views: 1,353
Posted By DanH
John, as previously noted, Bing CV's have been...

John, as previously noted, Bing CV's have been hanging on motorcycles about 50 years, maybe more. They've seen every kind of gas in every country in the world. Care and feeding is not much harder...
Forum: RV-10 04-23-2021, 05:30 PM
Replies: 7
Views: 1,343
Posted By DanH
Good example of a cooling intake set up for...

Good example of a cooling intake set up for internal diffusion, although the left inlet appears to be greatly compromised to clear something like a governor or AC compressor. He only shows the right...
Forum: RV General Discussion/News 04-23-2021, 05:09 PM
Replies: 52
Views: 4,577
Posted By DanH
Fair chance it's not quite what you're led to...

Fair chance it's not quite what you're led to believe.

The "offending" airplane was probably cleared to the orange dot, with Mr. Hunt cleared to the green, or a little past it as he writes. ...
Forum: RV General Discussion/News 04-23-2021, 09:01 AM
Replies: 14
Views: 668
Posted By DanH
It's about cooling the compressor outlet air. If...

It's about cooling the compressor outlet air. If you want small and temporary, copper loops in a ice tub. The permanent solution is about 50 feet of standard steel pipe run around the shop...
Forum: Traditional Aircraft Engines 04-23-2021, 08:51 AM
Replies: 13
Views: 1,611
Posted By DanH
...distant from the dipstick. I've never tried...

...distant from the dipstick.

I've never tried it, but an engine leak should be findable in the same manner as a tank leak...low air pressure and a bubble solution:...
Forum: RV General Discussion/News 04-23-2021, 07:07 AM
Replies: 9
Views: 898
Posted By DanH
I do. It's impossible to count the number of...

I do.

It's impossible to count the number of times I've heard the little voice say "You stupid s***!!" right after I've done something dumb in the shop.
Forum: RV-6/6A 04-23-2021, 06:37 AM
Replies: 10
Views: 752
Posted By DanH
How do you know? Got some pressure data? I do,...

How do you know? Got some pressure data? I do, and that James cowl wasn't very good.

Not sayin' a fellow can't live with a James cowl, but that sexy look is a lot like high heels and tight...
Forum: RV General Discussion/News 04-23-2021, 06:26 AM
Replies: 52
Views: 4,577
Posted By DanH
Human nature being what it is, 50% or more will...

Human nature being what it is, 50% or more will go directly to Ripon and cut in, regardless.

I do note a change regarding transponders...we're now instructed to "Leave transponder on throughout...
Forum: RV General Discussion/News 04-22-2021, 04:08 PM
Replies: 32
Views: 2,064
Posted By DanH
Returning to the OP's interest... Nope. ...

Returning to the OP's interest...



Nope. Reducing advance by 1.4 or 2.5, or even 5 doesn't appear to make a big difference.

Had a quick run down to Mobile this AM, so I flew two tests, one each...
Forum: RV-12/RV-12iS 04-22-2021, 03:45 PM
Replies: 19
Views: 1,353
Posted By DanH
If I may add an opinion.... The Bing CV is a...

If I may add an opinion....

The Bing CV is a very simple carb, and it's been around a long time....like since the 70's on BMW bikes. Sure, everyone should know their limitations, but gosh, a...
Forum: RV General Discussion/News 04-21-2021, 06:12 PM
Replies: 32
Views: 2,064
Posted By DanH
So do I. However, they may have changed their...

So do I. However, they may have changed their recommendation...
Forum: Fiberglass 04-21-2021, 06:03 PM
Replies: 5
Views: 305
Posted By DanH
Paint it just like the outside. Perhaps not the...

Paint it just like the outside. Perhaps not the same color (white is best), but fill, seal, epoxy primer, two-part topcoat.



No virtue in thinning epoxy with acetone, or anything else. It just...
Forum: RV General Discussion/News 04-21-2021, 05:52 AM
Replies: 32
Views: 2,064
Posted By DanH
Most manufacturers recommend 2" to 4". Common...

Most manufacturers recommend 2" to 4". Common theory says closer to the port should be hotter, but it appears to be untrue in your case. As you stated EGT with mags, that pretty much leaves mixture...
Forum: RV General Discussion/News 04-20-2021, 05:22 PM
Replies: 32
Views: 2,064
Posted By DanH
Data point Walt...probes how far down from the...

Data point Walt...probes how far down from the gasket?
Forum: RV-8/8A 04-20-2021, 05:43 AM
Replies: 12
Views: 1,301
Posted By DanH
Pilot weight is not a big factor here, as the CG...

Pilot weight is not a big factor here, as the CG shift between a 175 lb pilot and a 300 lb pilot is only one inch. The CG wild card for an 8 is passenger and baggage, here potentially exacerbated by...
Forum: RV General Discussion/News 04-19-2021, 09:01 AM
Replies: 29
Views: 4,603
Posted By DanH
Crawled face first into the hellhole (repeatedly)...

Crawled face first into the hellhole (repeatedly) to install a stringer across a belly panel which has been vibrating enough to start a few smoking rivets.

After 66 trips around the sun, a few of...
Forum: RV General Discussion/News 04-19-2021, 08:47 AM
Replies: 26
Views: 3,466
Posted By DanH
+1. Let's hear about winners who painted their...

+1. Let's hear about winners who painted their own. I mean no ill to those who hire out a lot of work, but homebuilt awards should reflect personal craftsmanship.
Forum: RV General Discussion/News 04-18-2021, 07:43 PM
Replies: 32
Views: 2,064
Posted By DanH
FWIW, quick experiment today...set 2400,...

FWIW, quick experiment today...set 2400, throttled for 65% at 3000 ft, leaned to peak EGT. Shutting down one ignition was all it took to push EGT from roughly 1450 to 1550.

Someone with SDS...
Forum: RV General Discussion/News 04-18-2021, 08:30 AM
Replies: 74
Views: 19,752
Posted By DanH
Vic, more info needed if we are to offer more...

Vic, more info needed if we are to offer more than shotgun suggestions. Good photos of the installation with the upper cowl off can tell a lot. Use the little paperclip icon.
Forum: Electronic Ignition Systems 04-17-2021, 10:05 AM
Replies: 67
Views: 8,544
Posted By DanH
Insulated ring terminals should meet MS25036. ...

Insulated ring terminals should meet MS25036. There are similar milspecs for other connection styles and for uninsulated terminals.
Forum: RV General Discussion/News 04-17-2021, 09:42 AM
Replies: 32
Views: 2,064
Posted By DanH
Ahhh, split rubber or plastic tubing? "Pipe"...

Ahhh, split rubber or plastic tubing? "Pipe" suggests something different on this side of the pond.

With an open port, the P-mag would not advance from base timing at low altitude. With the engine...
Forum: RV General Discussion/News 04-17-2021, 06:23 AM
Replies: 32
Views: 2,064
Posted By DanH
Mike, I assume "a pipe had come off" means you...

Mike, I assume "a pipe had come off" means you had one leaking intake gasket. It would make little or no advance difference in cruise at WOT, as the deltaP across the leak would only be equal to...
Forum: RV-14 04-16-2021, 04:42 PM
Replies: 11
Views: 1,130
Posted By DanH
The CHTs are fine for cruise. Lower airspeed...

The CHTs are fine for cruise. Lower airspeed tells the tale in climb, resulting in higher CHT and oil temperature.

There is no "correct" EGT number. EGT on a non-turbo Lycoming is a reference, not...
Forum: RV-8/8A 04-16-2021, 06:17 AM
Replies: 23
Views: 3,149
Posted By DanH
Most 8's have the mushroom rear rudder pedals, so...

Most 8's have the mushroom rear rudder pedals, so it's easy to install an internal rudder trim....no aero drag, no additional mass aft of the hinge line, infinitely adjustable.

Drill a hole in the...
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