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Search: Posts Made By: DanH
Forum: Propellers Yesterday, 05:13 PM
Replies: 11
Views: 420
Posted By DanH
You don't want to bet against the ticking time...

You don't want to bet against the ticking time bomb when considering any prop selected without the benefit of a blade vibration survey.

When Les Dowd says he has no concerns about a specific...
Forum: Southeast 02-25-2020, 10:30 PM
Replies: 11
Views: 491
Posted By DanH
Oh yeah. Geoff, you'll like 08A. Way back when,...

Oh yeah.

Geoff, you'll like 08A. Way back when, the FBO rules where I was learning to fly absolutely prohibited students from going to Wetumpka without their instructor. Word was the place was a...
Forum: Southeast 02-25-2020, 06:38 PM
Replies: 11
Views: 491
Posted By DanH
EAA 822, Wetumpka Airport (08A), just north of...

EAA 822, Wetumpka Airport (08A), just north of the river, 2nd Saturday, noon at the Yak Shack. You'll find it.

We have a few RV's. Doesn't everyone? ;)
Forum: Traditional Aircraft Engines 02-25-2020, 07:08 AM
Replies: 11
Views: 812
Posted By DanH
You're in Wynne, Arkansas? That's the middle of...

You're in Wynne, Arkansas? That's the middle of a few million acres of pretty river bottom west of Memphis? Bet there's a lot of airborne dust when it's dry, and a K&N doesn't stop micron sized...
Forum: Traditional Aircraft Engines 02-24-2020, 08:39 AM
Replies: 11
Views: 1,105
Posted By DanH
Check your manual. CG range (normal) is 78.7 -...

Check your manual. CG range (normal) is 78.7 - 86.8. Fuel arm is 80, pilot arm is 91.78. So, fuel moves CG very little, and pilot mass moves CG aft. With a 390, metal Hartzell, and rear battery,...
Forum: RV-12/RV-12iS 02-24-2020, 07:30 AM
Replies: 17
Views: 1,239
Posted By DanH
If doing stop and go, remember the brakes have a...

If doing stop and go, remember the brakes have a maximum kinetic energy rating.

For example, it's 117,500 ft lbs for the 199-102 Clevelands standard on the 6, 7, and 8.

KE = (0.0443 x knots^2 x...
Forum: Traditional Aircraft Engines 02-23-2020, 10:06 AM
Replies: 11
Views: 1,105
Posted By DanH
Phillip, one approach is to consider the primary...

Phillip, one approach is to consider the primary requirement. The key is choosing what you're willing to compromise.

If the primary is to be a hauler, i.e. passenger and lots of baggage, do the 360...
Forum: Fiberglass 02-22-2020, 03:28 PM
Replies: 8
Views: 577
Posted By DanH
Ya'll talking about the flat wrap over the aft...

Ya'll talking about the flat wrap over the aft edge of a slider?

First make a pattern. Drape a piece of heavy gauge 4-mil plastic over the fuselage-canopy intersection. Tape the ends down on the...
Forum: Traditional Aircraft Engines 02-22-2020, 02:47 PM
Replies: 11
Views: 958
Posted By DanH
Some of the sensors have a minimum.

Some of the sensors have a minimum.
Forum: Fuel Injection Systems 02-22-2020, 02:45 PM
Replies: 3
Views: 351
Posted By DanH
Works for me.

Works for me.
Forum: Fiberglass 02-21-2020, 05:24 PM
Replies: 6
Views: 469
Posted By DanH
High probability of both. Likely one heat cycle. ...

High probability of both. Likely one heat cycle. I doubt the cowl itself will budge, but the added troublesome patch, being low Tg West 501, may reshape, in particular if not well cured (like slow...
Forum: RV General Discussion/News 02-21-2020, 01:04 PM
Replies: 12
Views: 1,704
Posted By DanH
Vic hired that deer. Good for business. Sorta...

Vic hired that deer. Good for business. Sorta like the Godfather sending Luca Brasi. Same result for the deer ;)
Forum: RV General Discussion/News 02-21-2020, 12:56 PM
Replies: 4
Views: 314
Posted By DanH
Steve, Nothing, other than raising line...

Steve,



Nothing, other than raising line pressure between the electric pump and the engine-driven pump.

Here, read this...basic operating principles of a Bendix-type fuel...
Forum: RV-10 02-21-2020, 10:20 AM
Replies: 16
Views: 1,073
Posted By DanH
Fine to sandwich the SS foil and fiberfrax under...

Fine to sandwich the SS foil and fiberfrax under non-structural things, like the pass-thrus, or battery boxes, or solenoids. You must not sandwich under structure, notably the motor mount attach...
Forum: Fiberglass 02-21-2020, 07:03 AM
Replies: 6
Views: 469
Posted By DanH
I wouldn't fool around with a heat gun. The...

I wouldn't fool around with a heat gun. The upper cowl is going to reach around 200F every time you shut down after a summertime flight.
Forum: RV Photo/Video URLs 02-20-2020, 01:37 PM
Replies: 9
Views: 576
Posted By DanH
Best way to eliminate the pucker around the...

Best way to eliminate the pucker around the screws is to eliminate the screws.

http://www.vansairforce.com/community/showthread.php?t=22931
Forum: RV General Discussion/News 02-20-2020, 08:22 AM
Replies: 20
Views: 2,936
Posted By DanH
+1. None of the popular tailwheels have a seal...

+1. None of the popular tailwheels have a seal at the top of the shaft, so they all collect dirt and grit in the area of the "tombstone" pin. Regular cleaning is the hot ticket. ...
Forum: Traditional Aircraft Engines 02-20-2020, 07:51 AM
Replies: 12
Views: 2,600
Posted By DanH
A stock Lyc has set limits for rotating and recip...

A stock Lyc has set limits for rotating and recip balance. The T-bolt limits are a bit smaller. The difference is not huge, but like so much in aviation manufacturing these days, the exact numbers...
Forum: RV-10 02-19-2020, 06:46 PM
Replies: 16
Views: 1,073
Posted By DanH
That's typical Randy, so don't feel bad about it....

That's typical Randy, so don't feel bad about it. Most new builders figure they successfully ate the elephant when the airframe is done. Then they begin to install systems...

The interesting thing...
Forum: RV-10 02-19-2020, 11:46 AM
Replies: 16
Views: 1,073
Posted By DanH
Yer' makin' it too...

Yer' makin' it too hard.

http://www.vansairforce.com/community/showpost.php?p=1407581&postcount=10
Forum: RV General Discussion/News 02-18-2020, 06:32 PM
Replies: 26
Views: 2,549
Posted By DanH
Very interesting data point. It's common to read...

Very interesting data point. It's common to read that the fixed timing magneto is "doing nothing" when paired with a single EI running advanced timing. The elevated EGT after mag spark failure says...
Forum: RV-14 02-18-2020, 09:28 AM
Replies: 14
Views: 2,477
Posted By DanH
Re mounts...I've been flying a set of VIP mounts...

Re mounts...I've been flying a set of VIP mounts (50011-20) and find them satisfactory. Looks like Spruce is out of stock. Don't know if Vans has any. VIP will sell direct.

Dan
Forum: RV General Discussion/News 02-18-2020, 08:05 AM
Replies: 20
Views: 1,598
Posted By DanH
It's natural to attribute a problem to a single...

It's natural to attribute a problem to a single cause, but often a particular result is the sum of multiple factors. Check for leaks? Sure...tick off everything on the possibles list. Worth the...
Forum: Electronic Ignition Systems 02-17-2020, 08:58 AM
Replies: 272
Views: 90,334
Posted By DanH
Two photos to clarify coil wiring, 4 cyl of...

Two photos to clarify coil wiring, 4 cyl of course, 6 cyl conceptually similar.

These are coil packs, two coils packaged together. Each coil has two spark plug towers, as each coil fires two...
Forum: RV-8/8A 02-16-2020, 12:26 PM
Replies: 15
Views: 1,009
Posted By DanH
Some do ;)

Some do ;)
Forum: Electronic Ignition Systems 02-16-2020, 07:39 AM
Replies: 272
Views: 90,334
Posted By DanH
Best to use a good reference for any design...

Best to use a good reference for any design incorporating bearings. A glance at the SKF catalog says they needed 24 pages, with tables, to properly specify radial bearing fit. I'm just sayin'...
Forum: RV-10 02-16-2020, 07:13 AM
Replies: 27
Views: 1,904
Posted By DanH
Easy to build a good one. I use this with my...

Easy to build a good one. I use this with my truck mostly, but it will do fine on anything with a ball:

http://www.vansairforce.com/community/showpost.php?p=647359&postcount=1
Forum: Electrical Systems 02-13-2020, 08:53 AM
Replies: 17
Views: 1,208
Posted By DanH
Yes Brian, that's the stuff. Sam, I'm guessing...

Yes Brian, that's the stuff.

Sam, I'm guessing you can weld. If so, tubular pass-throughs are easy to make in any diameter, as they are just a tube welded into a base plate.

I've run burn tests...
Forum: RV-8/8A 02-12-2020, 09:59 PM
Replies: 4
Views: 386
Posted By DanH
Showplanes fastback? Nope, no water behind the...

Showplanes fastback? Nope, no water behind the panel. At least not yet ;)
Forum: RV General Discussion/News 02-12-2020, 07:58 PM
Replies: 46
Views: 5,837
Posted By DanH
Thank you. They're still married, so it's all...

Thank you. They're still married, so it's all good.

Ms Patti and I won't make Fredericksburg this year, as we're visiting the UK for our 40th. We do plan to be at PJ next fall.
Forum: RV General Discussion/News 02-12-2020, 06:06 PM
Replies: 46
Views: 5,837
Posted By DanH
Fredericksburg is a tourist town...boatloads of...

Fredericksburg is a tourist town...boatloads of hotels, and the FBO rental cars are cheap. Nothin' real special about the Hangar Hotel, other than the bar is nice. If you want to go, just do...
Forum: RV General Discussion/News 02-12-2020, 08:56 AM
Replies: 18
Views: 2,725
Posted By DanH
Indeed it is, in particular matched with that...

Indeed it is, in particular matched with that spinner.



I hear ya' brother. Those inlets are what, about 4.5"D? Although the results are acceptable to you, the data says the few builders with the...
Forum: Electronic Ignition Systems 02-11-2020, 04:52 PM
Replies: 272
Views: 90,334
Posted By DanH
The manual states 5 to 10 degrees, which pretty...

The manual states 5 to 10 degrees, which pretty much matches observation on a lathe.



See Global Controller Configuration Dialog. Nothing set in Megajolt software will have any effect below 200...
Forum: RV General Discussion/News 02-11-2020, 12:47 PM
Replies: 18
Views: 2,725
Posted By DanH
Carl, didn't you already tell us you could not...

Carl, didn't you already tell us you could not fly the 90 knot inbound to OSH without getting too hot for comfort?

An RV which won't do it comfortably is best described as "crippled".
Forum: RV Ongoing Maintenance Issues 02-11-2020, 09:09 AM
Replies: 11
Views: 1,815
Posted By DanH
It does indeed. Or maybe rubbing against another...

It does indeed. Or maybe rubbing against another steel braided line, or maybe a Bowden cable.

It works the other way too. Poke around in enough airplanes and you'll find one where the steel...
Forum: RV General Discussion/News 02-11-2020, 08:54 AM
Replies: 18
Views: 2,725
Posted By DanH
Excellent opportunity to change a few...

Excellent opportunity to change a few details.

Sam is a great guy, but I don't think he ever got beyond the notion of intake throttling.

Some of the latest props have very wide blades, so there...
Forum: RV Photo/Video URLs 02-10-2020, 07:39 AM
Replies: 6
Views: 585
Posted By DanH
http://www.vansairforce.com/community/showthread.p...

http://www.vansairforce.com/community/showthread.php?p=276028
Forum: RV General Discussion/News 02-09-2020, 11:10 AM
Replies: 7
Views: 670
Posted By DanH
It would be difficult to warm the entire canopy...

It would be difficult to warm the entire canopy evenly...and uneven heating would create temporary stress where there was none before.
Forum: RV General Discussion/News 02-07-2020, 06:40 PM
Replies: 6
Views: 575
Posted By DanH
Two B-nuts and they are out on the bench.

Two B-nuts and they are out on the bench.
Forum: RV-6/6A 02-07-2020, 06:37 PM
Replies: 17
Views: 959
Posted By DanH
Shouldn't need a tool for a -7. Pretty sure you...

Shouldn't need a tool for a -7. Pretty sure you can reach in there through the fuel sender cover plate.
Forum: RV General Discussion/News 02-07-2020, 08:57 AM
Replies: 6
Views: 575
Posted By DanH
Vent Line Header Tanks

I'm told some airports, in particular those in Florida, are enforcing fuel spillage regulations. My RV-8 regularly spit fuel from the tank vents if left parked while full, so I decided to do...
Forum: RV-6/6A 02-06-2020, 02:27 PM
Replies: 17
Views: 959
Posted By DanH
Easy to diagnose if you can get a fingertip over...

Easy to diagnose if you can get a fingertip over the end of the vent line, through the filler opening. If so, have a buddy blow air into the vent under the fuselage while you listen at the filler. ...
Forum: RV-6/6A 02-06-2020, 01:42 PM
Replies: 17
Views: 959
Posted By DanH
Loose B-nut at the vent line connection inside...

Loose B-nut at the vent line connection inside the tank, inner surface of the root rib. You can easily reach it if you remove the fuel level sender cover plate.
Forum: RV General Discussion/News 02-06-2020, 12:46 PM
Replies: 41
Views: 11,580
Posted By DanH
Supporting...

Supporting documents:

https://dms.ntsb.gov/pubdms/search/hitlist.cfm?docketID=50277&CFID=3185813&CFTOKEN=ed225cf6418aafe8-158077F0-BFC0-6F80-94538AF2DE134D96

In this case we should note the...
Forum: RV General Discussion/News 02-06-2020, 06:51 AM
Replies: 5
Views: 350
Posted By DanH
Lee, beg pardon, but... The most valuable...

Lee, beg pardon, but...

The most valuable commodity in the EAB game is time. Do the minimum logging necessary to meet the regulatory requirement, as interpreted by your local DAR. Spend your time...
Forum: VAF Classifieds (posts in here deleted after 30 days) 02-05-2020, 12:09 PM
Replies: 10
Views: 583
Posted By DanH
You can make your own flexible sleeves with some...

You can make your own flexible sleeves with some glass cloth and 2-part urethane rubber.
Forum: Alternative Engines 02-05-2020, 10:51 AM
Replies: 27
Views: 2,927
Posted By DanH
I though that way once upon a time. Trouble is,...

I though that way once upon a time. Trouble is, the basic powerplant is the easy part...
Forum: RV Ongoing Maintenance Issues 02-04-2020, 02:17 PM
Replies: 7
Views: 594
Posted By DanH
Try the Tempest. Lycoming pump was trash a...

Try the Tempest. Lycoming pump was trash a little too soon for my money. Post #5:

http://www.vansairforce.com/community/showthread.php?p=1262416
Forum: RV General Discussion/News 02-03-2020, 05:09 PM
Replies: 16
Views: 1,539
Posted By DanH
Conceivably, you could improve their chance of...

Conceivably, you could improve their chance of survival by simply flipping them 180 and sliding them down the tubes, so the tabs point forward toward the sump hangers, without bends.

Flotation test...
Forum: RV General Discussion/News 02-03-2020, 02:14 PM
Replies: 16
Views: 1,539
Posted By DanH
Mine too. Those things are wrong as a soup...

Mine too. Those things are wrong as a soup sandwich.
Forum: RV General Discussion/News 02-03-2020, 12:46 PM
Replies: 16
Views: 1,539
Posted By DanH
Are these parts from...

Are these parts from Vetterman?

https://www.danhorton.net/VAF/Exhaust%20Hanger%20Critique/Pipe%20Brackets.jpg
Forum: Traditional Aircraft Engines 02-02-2020, 09:23 AM
Replies: 6
Views: 690
Posted By DanH
Good move, as the cam and tappets are probably...

Good move, as the cam and tappets are probably more of a concern.
Forum: RV Photo/Video URLs 02-01-2020, 02:52 PM
Replies: 7
Views: 544
Posted By DanH
No known performance benefit. Definitely...

No known performance benefit. Definitely re-balance the elevators.
Forum: RV-14 02-01-2020, 07:08 AM
Replies: 38
Views: 4,191
Posted By DanH
...unless the subject is a classic J-3 or L-4. ...

...unless the subject is a classic J-3 or L-4. Solo, aft CG, the most effective recovery is indeed full back stick until rotation stops. Allow the stick to float forward (it takes some muscle to...
Forum: RV General Discussion/News 01-31-2020, 10:21 AM
Replies: 28
Views: 2,842
Posted By DanH
Not as much as installing 120 nutplates.

Not as much as installing 120 nutplates.
Forum: RV General Discussion/News 01-30-2020, 03:04 PM
Replies: 10
Views: 878
Posted By DanH
Mike at Oshkosh? I'll order an extra keg ;)

Mike at Oshkosh?

I'll order an extra keg ;)
Forum: RV General Discussion/News 01-30-2020, 03:00 PM
Replies: 48
Views: 4,184
Posted By DanH
Probably as soon as Lycoming starts selling their...

Probably as soon as Lycoming starts selling their version.
Forum: RV Ongoing Maintenance Issues 01-30-2020, 08:00 AM
Replies: 65
Views: 6,035
Posted By DanH
I don't either....if it really does that. BTW,...

I don't either....if it really does that.

BTW, from your post a few months ago:

After I installed two Pmags on my previous (RV8) airplane, we had two kick backs with a lightweight Whirlwind prop....
Forum: RV Ongoing Maintenance Issues 01-30-2020, 07:50 AM
Replies: 65
Views: 6,035
Posted By DanH
The outboard o-ring flange was removed so the...

The outboard o-ring flange was removed so the tube could enter the sump a bit further?



I hear 'ya brother.

Perhaps prime followed by mixture at ICO and throttle full forward,which would be a...
Forum: RV Ongoing Maintenance Issues 01-29-2020, 02:12 PM
Replies: 65
Views: 6,035
Posted By DanH
Understandably. Lycomings do pop in the sump. ...

Understandably. Lycomings do pop in the sump. Right now I don't know precisely why.

So anyway, tell us more about the setup....mags or waste spark EI, OAT and engine temperature, priming,...
Forum: RV Ongoing Maintenance Issues 01-29-2020, 09:03 AM
Replies: 65
Views: 6,035
Posted By DanH
True, and stratification too, assuming static...

True, and stratification too, assuming static conditions. Some of the reported experiments identify stratification in taller volumes.

For us, the classic dynamic condition is probably the flooded...
Forum: RV Ongoing Maintenance Issues 01-28-2020, 07:12 PM
Replies: 65
Views: 6,035
Posted By DanH
I've ignored all recent "pooled fuel can cause an...

I've ignored all recent "pooled fuel can cause an exploding sump" anecdotes, as I wanted to do some reading first. After all, challenging the collective wisdom of the airport front porch is a task...
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