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Search: Posts Made By: DanH
Forum: Reviews Today, 12:08 PM
Replies: 4
Views: 148
Posted By DanH
Don is solid gold.

Don is solid gold.
Forum: RV General Discussion/News Today, 09:03 AM
Replies: 9
Views: 232
Posted By DanH
That goes to the question of "mission". For an...

That goes to the question of "mission". For an IFR airplane I'd want two independent bus systems with two equal batteries. For VFR, it's one main battery and one little battery solely to support...
Forum: RV General Discussion/News Today, 07:36 AM
Replies: 9
Views: 232
Posted By DanH
What Carl said. Do this instead, isolated feeds...

What Carl said.

Do this instead, isolated feeds and grounds. One diode, not three, and replace the useless breaker with a fusible link for aux battery charge. Well, "useless" may not be fair, as...
Forum: RV-7/7A Yesterday, 02:55 PM
Replies: 4
Views: 472
Posted By DanH
Won't hurt anything.

Won't hurt anything.
Forum: Traditional Aircraft Engines Yesterday, 06:29 AM
Replies: 3
Views: 430
Posted By DanH
It has an oil filter adapter installed?

It has an oil filter adapter installed?
Forum: RV General Discussion/News Yesterday, 06:28 AM
Replies: 14
Views: 1,283
Posted By DanH
What Paul said. The skin stretched, and it is...

What Paul said. The skin stretched, and it is very difficult to shrink tempered aluminum, in particular given limited access.

New airplane deserves a new skin anyway
Forum: RV-14 04-05-2020, 07:53 AM
Replies: 5
Views: 369
Posted By DanH
Bulking up the outside and then trying to enlarge...

Bulking up the outside and then trying to enlarge the inside is a very hard road.

Grab some fine grained foam, carve the exact shape desired, incorporating Steve's suggestions. Seal it, PVA it, wax...
Forum: RV General Discussion/News 04-04-2020, 10:59 AM
Replies: 67
Views: 7,136
Posted By DanH
It's just a little bitty oil door. Ummm, just so...

It's just a little bitty oil door. Ummm, just so you know, an RV-8 flies just fine with the front baggage door standing open. Actually, it's AOA sensitive...closes itself on downwind, then opens...
Forum: RV General Discussion/News 04-04-2020, 08:29 AM
Replies: 10
Views: 839
Posted By DanH
Yep. Fillet every foil edge, everywhere. ...

Yep. Fillet every foil edge, everywhere. Sealing is good, and at the practical level, you want the edges buried so they don't cut you.
Forum: Electronic Ignition Systems 04-04-2020, 06:16 AM
Replies: 35
Views: 5,361
Posted By DanH
A complex electrical system? Come on Bill, you...

A complex electrical system? Come on Bill, you know better...

ALL design is an exercise in the art of intelligent compromise. Each ignition vendor makes choices based on what he/she considers most...
Forum: RV General Discussion/News 04-03-2020, 06:03 PM
Replies: 10
Views: 839
Posted By DanH
What Kyle said, nothing under the motor mount...

What Kyle said, nothing under the motor mount attach points. As for the rest, none of it is critical. Lots of hours out there with accessories bolted down over foil and frax, but if it bothers you,...
Forum: RV General Discussion/News 04-02-2020, 06:17 PM
Replies: 67
Views: 7,136
Posted By DanH
1982, a certain very junior FBO employee gets...

1982, a certain very junior FBO employee gets detailed to deliver a new Dakota to a dealer and new owner at Canaveral. So said junior birdman launches late after a departure delay due to fog. No...
Forum: Electrical Systems 04-02-2020, 06:54 AM
Replies: 16
Views: 779
Posted By DanH
Hmmm. This is the age of 3D printing. Sure...

Hmmm. This is the age of 3D printing. Sure seems like some enterprising person could design and print brush holders to replace the VR/brush module in ND alternators.....
Forum: Safety 04-02-2020, 06:41 AM
Replies: 21
Views: 1,755
Posted By DanH
The Private pilot test standard includes the...

The Private pilot test standard includes the ability to control the aircraft solely by reference to instruments in level flight, climb, descent, turns to a heading, and unusual attitude...
Forum: RV-14 04-01-2020, 04:29 PM
Replies: 28
Views: 2,283
Posted By DanH
The early RV models have a lower VNE. And it's...

The early RV models have a lower VNE. And it's possible to reach critical speed without the oscillation being divergent to failure, given fortuitous design. For a probably example, read Smokey's...
Forum: RV-10 04-01-2020, 03:26 PM
Replies: 14
Views: 1,445
Posted By DanH
Because Mark Kettering is a realistic guy. You...

Because Mark Kettering is a realistic guy.



You won't save $30K, as you'll wind up getting less when you sell someday...probably much more than $30K less, the reality of installing an alt engine in...
Forum: RV-14 04-01-2020, 10:05 AM
Replies: 28
Views: 2,283
Posted By DanH
Vans has apparently satisfied themselves that an...

Vans has apparently satisfied themselves that an elevator built to plan and not loaded with additional mass aft of the hinge line (for example, body filler, excessive paint, or an extra servo) falls...
Forum: RV-14 04-01-2020, 09:40 AM
Replies: 28
Views: 2,283
Posted By DanH
The primary purpose is to decouple the elevator...

The primary purpose is to decouple the elevator from motion (torsion or bending or both) of the horizontal stabilizer. Consider this basic example.

Case A has the CG of the elevator well aft of the...
Forum: RV-14 04-01-2020, 08:19 AM
Replies: 28
Views: 2,283
Posted By DanH
Caution, Will Robinson. Elevator balance has...

Caution, Will Robinson. Elevator balance has practically nothing to do with how well it flies.
Forum: Fiberglass 03-31-2020, 09:30 AM
Replies: 15
Views: 1,798
Posted By DanH
Yes, of course. Those of us with powerful RV's...

Yes, of course. Those of us with powerful RV's need more feathers on the arrow ;)

Kidding aside, let me make a case. I use AN526C's with nylon washers for most glass, just because it's more...
Forum: Fiberglass 03-31-2020, 05:48 AM
Replies: 15
Views: 1,798
Posted By DanH
Lowers were built separately from the...

Lowers were built separately from the upper:

http://www.vansairforce.com/community/showthread.php?t=22931
Forum: RV General Discussion/News 03-30-2020, 07:17 PM
Replies: 15
Views: 1,062
Posted By DanH
Flew the -8 over to Tuskegee to get some cheap...

Flew the -8 over to Tuskegee to get some cheap gas. Pulled power on downwind and made the prettiest squeaker ever, right on the numbers. Per the Laws of the Aviation Universe ("Great landings are...
Forum: Fiberglass 03-30-2020, 05:50 AM
Replies: 15
Views: 1,798
Posted By DanH
Whoops! Allen...told you wrong. While...

Whoops! Allen...told you wrong.

While preflighting yesterday I glanced under the HS and realized I had two fairing screws in nutplates on the underside....
Forum: RV Ongoing Maintenance Issues 03-28-2020, 05:49 PM
Replies: 23
Views: 1,791
Posted By DanH
Paul, the master disconnects the battery. The...

Paul, the master disconnects the battery. The Plane Power's field is typically connected to the main bus via a 5 amp breaker. Disconnecting the battery (master OFF) will not shut down a Plane Power...
Forum: RV Building Tips/Techniques 03-28-2020, 05:53 AM
Replies: 126
Views: 88,653
Posted By DanH
Photos re-posted...again!

Photos re-posted...again!
Forum: RV-8/8A 03-27-2020, 02:01 PM
Replies: 933
Views: 651,560
Posted By DanH
That's a fine lookin' airplane! What is purpose...

That's a fine lookin' airplane!

What is purpose of the small intake on the left side of the cowl?
Forum: Fiberglass 03-27-2020, 09:59 AM
Replies: 15
Views: 1,798
Posted By DanH
They're just screwed to the longeron. No screws...

They're just screwed to the longeron. No screws in the HS, top or bottom.
Forum: RV General Discussion/News 03-27-2020, 06:37 AM
Replies: 37
Views: 2,648
Posted By DanH
Looks like a standard AC type, which as...

Looks like a standard AC type, which as previously noted, does have its own pressure relief.

http://www.vansairforce.com/community/showthread.php?t=45548
Forum: Fiberglass 03-27-2020, 06:25 AM
Replies: 15
Views: 1,798
Posted By DanH
Remove any high spots on the underside of the...

Remove any high spots on the underside of the pre-made upper fairing, just as Bill said. When well fitted, close any remaining edge gaps to zero with a liquid shim. Roughen the underside of the...
Forum: RV General Discussion/News 03-26-2020, 09:48 AM
Replies: 55
Views: 5,901
Posted By DanH
Variable or fixed advance?

Variable or fixed advance?
Forum: RV General Discussion/News 03-26-2020, 07:53 AM
Replies: 37
Views: 2,648
Posted By DanH
The older AC style filter adapter has a bypass. ...

The older AC style filter adapter has a bypass. Most newer adapters don't have one. The adapter's bypass deltaP appears to be in the low teens.

Champion filters bypass in the 8 to 10 psi deltaP...
Forum: RV General Discussion/News 03-24-2020, 11:24 AM
Replies: 39
Views: 6,348
Posted By DanH
Relax guys. Have a laugh....this from Berkeley...

Relax guys. Have a laugh....this from Berkeley Breathed

Our beloved Bill the Cat, in full protection:

https://www.danhorton.net/Misc/Bill%20the%20Corona%20Cat.JPG
Forum: RV General Discussion/News 03-24-2020, 10:38 AM
Replies: 39
Views: 6,348
Posted By DanH
Gentlemen, I'm not advocating we give everyone a...

Gentlemen, I'm not advocating we give everyone a free dose and get it done. I'm merely pointing out that very soon, decisions will be made, and "protect life at all costs" won't be the sole position.
Forum: RV General Discussion/News 03-24-2020, 06:39 AM
Replies: 39
Views: 6,348
Posted By DanH
Already starting to see articles in major outlets...

Already starting to see articles in major outlets sharing the theme "Is the cure worse than the disease?" Authors come at the issue from all directions...isolation is mentally difficult, all health...
Forum: RV General Discussion/News 03-23-2020, 11:58 AM
Replies: 74
Views: 36,093
Posted By DanH
There are a great many potential...

There are a great many potential insulators....cork to Aerogel, and everywhere in between.

The primary advantages of the common Fiberfrax felt product are availability from the usual aircraft supply...
Forum: RV General Discussion/News 03-21-2020, 07:44 AM
Replies: 29
Views: 1,665
Posted By DanH
It's nice work Martin. Trust me; a fella...

It's nice work Martin.



Trust me; a fella re-thinks a lot of shop decisions at 10,000 over the rocks.



I suspect not much. Assuming good tight baffle wraps, the 8's relatively large inlet tends...
Forum: RV-4 03-19-2020, 08:07 AM
Replies: 9
Views: 1,021
Posted By DanH
This may help. Cowl inflates like a balloon. ...

This may help.

Cowl inflates like a balloon. Load is approximately 60 pounds per square foot at cruise speed, higher at VNE. Center of upper and lower cowls is tied together at inboard end of...
Forum: Electrical Systems 03-19-2020, 06:42 AM
Replies: 14
Views: 2,040
Posted By DanH
Marc, perhaps much expanded sections on...

Marc, perhaps much expanded sections on alternators, regulator types, and over-voltage protection methods. Lithium-iron batteries too.
Forum: RV Ongoing Maintenance Issues 03-18-2020, 06:52 AM
Replies: 23
Views: 1,791
Posted By DanH
Good chance your "field" wire isn't a field wire....

Good chance your "field" wire isn't a field wire. I recall prior alternator discussion describing some auto alternators as having what can be described as a "wake-up" wire rather than a true field...
Forum: RV General Discussion/News 03-18-2020, 06:20 AM
Replies: 27
Views: 1,648
Posted By DanH
Done......

Done......
Forum: RV General Discussion/News 03-17-2020, 09:40 AM
Replies: 29
Views: 2,989
Posted By DanH
IIRC, the primary practical requirement is filing...

IIRC, the primary practical requirement is filing an annual program letter for FSDO approval, stating all the destinations where the operator intends to "exhibit" the aircraft. Not surprisingly,...
Forum: RV-4 03-17-2020, 08:15 AM
Replies: 9
Views: 1,021
Posted By DanH
I think that's spot on, see below. Found some...

I think that's spot on, see below.

Found some photos on the home hard drive. You can try this experimental approach, and if you do, a long term report would be appreciated.

This was an old RV-4...
Forum: RV-14 03-17-2020, 05:38 AM
Replies: 12
Views: 970
Posted By DanH
Thank you gentlemen.

Thank you gentlemen.
Forum: RV-4 03-16-2020, 05:45 PM
Replies: 9
Views: 1,021
Posted By DanH
Remember, carbon is a high modulus fiber...it has...

Remember, carbon is a high modulus fiber...it has no "stretch" compared to the typical low modulus glass fabric. So, the load path would be from glass to carbon to glass through a single bond line;...
Forum: RV General Discussion/News 03-16-2020, 05:11 PM
Replies: 29
Views: 2,989
Posted By DanH
Don't need a new type of airworthiness...

Don't need a new type of airworthiness certificate. Aircraft built more than 50% by a hired gun are legally licensed Experimental Exhibition.
Forum: RV-14 03-16-2020, 12:40 PM
Replies: 8
Views: 522
Posted By DanH
I've not yet worked with one of the new...

I've not yet worked with one of the new gel-coated cowls, but as Scott says, a good gel coat should eliminate the classic pinhole problem. Don't sand through it unless the goal is a structural bond....
Forum: RV-14 03-16-2020, 11:29 AM
Replies: 12
Views: 970
Posted By DanH
So where is it applied? Got a picture?

So where is it applied? Got a picture?
Forum: RV-4 03-16-2020, 10:49 AM
Replies: 9
Views: 1,021
Posted By DanH
Made a repair for an RV-4 owner recently. Same...

Made a repair for an RV-4 owner recently. Same problem, with several previous repair attempts. Installed some new structure inside the cowl to change the load path. Probably not enough hours on it...
Forum: RV-14 03-16-2020, 06:05 AM
Replies: 12
Views: 970
Posted By DanH
Not familiar with this step from the RV14 manual....

Not familiar with this step from the RV14 manual. Got photos, or can you post the instructions?

There are a variety of high temp silicones suitable for baffle sealing, but Permatex Ultra Black...
Forum: RV General Discussion/News 03-14-2020, 07:37 AM
Replies: 11
Views: 1,668
Posted By DanH
In the weekday world I'm a independent truck...

In the weekday world I'm a independent truck dealer. Given a policy (31 years now) of "Please, take it to your mechanic", I've been on the seller side of many, many, many pre-buys.

Vic is...
Forum: RV General Discussion/News 03-13-2020, 08:22 AM
Replies: 84
Views: 11,924
Posted By DanH
Very good article Scott. Thanks for posting it. ...

Very good article Scott. Thanks for posting it. Makes an excellent case for social distancing....and explains why, in detail.

Like most here, I hate to see it happen, but S&F should probably...
Forum: RV General Discussion/News 03-12-2020, 04:47 PM
Replies: 84
Views: 11,924
Posted By DanH
1.5 hours, start at noon, re-open the field at...

1.5 hours, start at noon, re-open the field at 1:30, through Friday. Keep the night shows. A 1:30 re-open offers a real window to arrive or depart in the afternoon, night show or not. Give 'em the...
Forum: RV General Discussion/News 03-12-2020, 07:07 AM
Replies: 84
Views: 11,924
Posted By DanH
Greg, may I offer a suggestion? Much seems to be...

Greg, may I offer a suggestion?

Much seems to be driven by the need to enforce FAA extended safety areas and airspace closures. I submit the "airshow" side of the operation has simply gotten out of...
Forum: RV-8/8A 03-10-2020, 02:57 PM
Replies: 7
Views: 734
Posted By DanH
Aft one more bulkhead.

Aft one more bulkhead.
Forum: RV-14 03-10-2020, 06:58 AM
Replies: 29
Views: 2,496
Posted By DanH
It's possible to design an alternate air door...

It's possible to design an alternate air door offering zero chance of parts ingestion. It's also possible to eliminate the need for pilot decision and/or action after power loss due to filter...
Forum: Electronic Ignition Systems 03-08-2020, 08:53 AM
Replies: 12
Views: 962
Posted By DanH
Note Nigel's suggestion that essentially the same...

Note Nigel's suggestion that essentially the same cruise performance at less CHT is available by sticking with less advance and simply climbing a few thousand feet higher. The interesting thing...
Forum: RV General Discussion/News 03-02-2020, 01:25 AM
Replies: 30
Views: 2,832
Posted By DanH
I knew a fellow who was arrested for shooting a...

I knew a fellow who was arrested for shooting a camping neighbor's generator. IIRC, the other campers made his bail.
Forum: RV-14 03-02-2020, 01:03 AM
Replies: 15
Views: 1,362
Posted By DanH
Karl, the selection goal is a plug whose center...

Karl, the selection goal is a plug whose center electrode runs hot enough to burn away carbon, without being hot enough to cause pre-ignition, i.e. ignition of the fuel air mix by glow, rather than...
Forum: RV General Discussion/News 02-28-2020, 12:59 PM
Replies: 24
Views: 7,286
Posted By DanH
Yes and yes.

Yes and yes.
Forum: Propellers 02-27-2020, 04:13 PM
Replies: 11
Views: 1,083
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, 09:30 PM
Replies: 11
Views: 742
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, 05:38 PM
Replies: 11
Views: 742
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? ;)
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