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Search: Posts Made By: DanH
Forum: RV-8/8A Today, 02:17 PM
Replies: 920
Views: 634,177
Posted By DanH
Just skim with epoxy or whatever surface sealing...

Just skim with epoxy or whatever surface sealing method you choose. Mine was skimmed once to seal then sprayed with a few costs of K36.

Were I to build another, I'd add a few plies of carbon to the...
Forum: Propellers Today, 11:53 AM
Replies: 12
Views: 564
Posted By DanH
I switched to Aeroshell 5. I could not keep the...

I switched to Aeroshell 5. I could not keep the oil content from running out of the open Aeroshell 6 tube while stored in the grease gun, after which it wouldn't pump.
Forum: Safety Today, 11:39 AM
Replies: 7
Views: 3,644
Posted By DanH
Apparently...now reads "four".

Apparently...now reads "four".
Forum: Electronic Ignition Systems Yesterday, 10:19 PM
Replies: 253
Views: 87,274
Posted By DanH
Seriously, I built those things four years ago,...

Seriously, I built those things four years ago, and don't remember exactly what I did. I think you have a handle on it.
Forum: RV General Discussion/News 01-21-2020, 12:03 PM
Replies: 17
Views: 3,040
Posted By DanH
Thank you. Had to build them myself, can't...

Thank you. Had to build them myself, can't afford to buy one. Ms. Patti says I definitely can't afford a 30-year old girlfriend.
Forum: Fiberglass 01-21-2020, 07:38 AM
Replies: 20
Views: 9,301
Posted By DanH
My flush choice too. Tinnermans? Yuk. The tank...

My flush choice too. Tinnermans? Yuk.

The tank screw idea is pretty slick.

I'm sure it costs me a milliknot or two, but on glass I generally use stainless AN526 screws and a nylon washer. No...
Forum: RV-8/8A 01-21-2020, 07:25 AM
Replies: 10
Views: 636
Posted By DanH
Now that you ask, I don't think so. Nothing...

Now that you ask, I don't think so.

Nothing handy to compare.

I assume the tumblehome observation comes from your existing slider? None of my photos show any at the rear of this canopy.
Forum: RV-8/8A 01-20-2020, 04:55 PM
Replies: 10
Views: 636
Posted By DanH
I'm using a standard Vans canopy, circa 2006. It...

I'm using a standard Vans canopy, circa 2006. It has been glued into that glass frame 10 years or more, no issues.

As Stu suggested, I think a lot of the tumblehome gets cut off. That said, I cut...
Forum: Traditional Aircraft Engines 01-19-2020, 10:26 PM
Replies: 16
Views: 1,528
Posted By DanH
Mike, I don't have a Showplanes cowl. Mine is a...

Mike, I don't have a Showplanes cowl. Mine is a modified Vans cowl. Any angle valve in a stock RV-8 cowl is tight along the left side, and over the front corners.
Forum: Traditional Aircraft Engines 01-18-2020, 08:25 PM
Replies: 16
Views: 1,528
Posted By DanH
Blame Lycoming. After developing the concept...

Blame Lycoming.

After developing the concept using machined 360 cases, Barrett initially held a contractual exclusive on Lycoming IO-390 engine kits. Then there was a period with kits available to...
Forum: RV General Discussion/News 01-16-2020, 07:04 AM
Replies: 11
Views: 839
Posted By DanH
Sure......

Sure......
Forum: RV Ongoing Maintenance Issues 01-15-2020, 08:32 AM
Replies: 39
Views: 2,567
Posted By DanH
Tell us about the exit. Intake water is one...

Tell us about the exit. Intake water is one thing, but I assume you don't approve of dumping priming fuel into the lower cowl.

Sometimes a sniffle drain can be tricky. Here's an example, circa...
Forum: Electronic Ignition Systems 01-14-2020, 05:16 PM
Replies: 253
Views: 87,274
Posted By DanH
Had a private note with a very good suggestion. ...

Had a private note with a very good suggestion. The trigger body could have an oil weep hole to vent the bearing space. It would offer an early indication of oil seal failure. Although oil is...
Forum: RV Ongoing Maintenance Issues 01-14-2020, 11:35 AM
Replies: 39
Views: 2,567
Posted By DanH
The risk of water ingestion remains with a...

The risk of water ingestion remains with a horizontal induction and any fuel system choice.

As for EFI, I have seen a bent connecting rod taken from a GM 6.0L, attributed to hydraulic lock after a...
Forum: RV Ongoing Maintenance Issues 01-14-2020, 09:23 AM
Replies: 39
Views: 2,567
Posted By DanH
Then it is common to see a bit of fuel in the air...

Then it is common to see a bit of fuel in the air plenum, and from the sniffle.

The engine driven pump creates line pressure by pushing a diaphragm with a big spring. The engine's pump cam (via the...
Forum: Electronic Ignition Systems 01-14-2020, 07:58 AM
Replies: 253
Views: 87,274
Posted By DanH
No grub screws for me. Both the trigger wheel...

No grub screws for me. Both the trigger wheel and the bearing collar are a light press fit locked with ASME B18.8.2 split pins in double shear, 0.125"D.

The idea was to create a cartridge, a...
Forum: RV Ongoing Maintenance Issues 01-13-2020, 04:04 PM
Replies: 39
Views: 2,567
Posted By DanH
It is not. It's a check valve. It seals at low...

It is not. It's a check valve. It seals at low manifold pressure, but could just as well be an open fitting at WOT, given a good ram inlet.
Forum: RV Ongoing Maintenance Issues 01-13-2020, 11:54 AM
Replies: 39
Views: 2,567
Posted By DanH
Both you guys are using a constant flow injection...

Both you guys are using a constant flow injection without a purge valve?
Forum: RV General Discussion/News 01-13-2020, 10:43 AM
Replies: 17
Views: 3,040
Posted By DanH
Quick update; both units doing fine. One of my...

Quick update; both units doing fine.

One of my buds was dragging his S7 three weeks after knee replacements. Me like.
Forum: RV Ongoing Maintenance Issues 01-13-2020, 07:37 AM
Replies: 39
Views: 2,567
Posted By DanH
Enclosed space. Where is the required oxygen? ...

Enclosed space. Where is the required oxygen?



No matter, as our sumps are designed are to be unharmed. For sure a sniffle doesn't prevent the occasional "thump from the sump", or air filter...
Forum: VAF Classifieds (posts in here deleted after 30 days) 01-13-2020, 06:11 AM
Replies: 4
Views: 330
Posted By DanH
A plenum lid is easy. The key issue is how it is...

A plenum lid is easy. The key issue is how it is sealed to the cowl inlet.
Forum: Electronic Ignition Systems 01-13-2020, 06:10 AM
Replies: 22
Views: 2,170
Posted By DanH
There are no totally, absolutely risk-free...

There are no totally, absolutely risk-free ignitions. Let's focus on operating and performance differences.
Forum: RV Ongoing Maintenance Issues 01-12-2020, 10:46 AM
Replies: 39
Views: 2,567
Posted By DanH
Explosion risk is a function of fuel-air ratio by...

Explosion risk is a function of fuel-air ratio by weight. Fuel in liquid phase has no practical explosion risk. The fuel of interest is that which is in vapor phase, above the liquid, and combined...
Forum: RV Ongoing Maintenance Issues 01-12-2020, 08:05 AM
Replies: 39
Views: 2,567
Posted By DanH
Last time I looked in there, it was bone dry. ...

Last time I looked in there, it was bone dry. Annual time right now; I'll look again. Not much need to guess, given most of us have some kind of tiny camera on a stick. Open the throttle and poke...
Forum: Traditional Aircraft Engines 01-12-2020, 06:50 AM
Replies: 14
Views: 944
Posted By DanH
Typically not wired.

Typically not wired.
Forum: RV General Discussion/News 01-10-2020, 05:15 PM
Replies: 7
Views: 960
Posted By DanH
Snail mail an order form. Use tax is 2%, if Vans...

Snail mail an order form. Use tax is 2%, if Vans doesn't collect.

BTW, the 2% "automotive" category means...

810-6-1-.12. Automotive Vehicles.
(1) The term "automotive vehicles" as used in the...
Forum: Electronic Ignition Systems 01-10-2020, 11:30 AM
Replies: 15
Views: 963
Posted By DanH
Ross, Could you expand on the effects of normal...

Ross,

Could you expand on the effects of normal operation vs current saving mode?

Using the 4-cyl example, 2.09 amps vs 0.77 is significant. I assume the difference is entirely primary current,...
Forum: My RV Build Project 01-10-2020, 07:08 AM
Replies: 455
Views: 242,756
Posted By DanH
Ditch the syringes Dave. Get something like wide...

Ditch the syringes Dave. Get something like wide mouth condiment squirt bottles for hardener, and a 1 qt pour bottle for resin...something easy to refill from the can.

An electronic scale is great,...
Forum: RV-14 01-10-2020, 06:07 AM
Replies: 22
Views: 2,880
Posted By DanH
Dave, being new to the forum, here's an important...

Dave, being new to the forum, here's an important clue...When asking for "best", most of the advice you'll get is based on pride of ownership, not critical analysis.
Forum: Glass Cockpit 01-09-2020, 03:35 PM
Replies: 30
Poll: EFIS Poll
Views: 2,053
Posted By DanH
Methinks the poll questions will just result in a...

Methinks the poll questions will just result in a market share snapshot.
Forum: RV General Discussion/News 01-09-2020, 02:38 PM
Replies: 7
Views: 584
Posted By DanH
Two-part matte clear. Shoot multiple coats to...

Two-part matte clear. Shoot multiple coats to build thickness, then block sand wet with 800-1000 grit to remove the high spots over the labels, plus any flaws/dust/nibs. Shoot one more final coat. ...
Forum: Fiberglass 01-09-2020, 02:32 PM
Replies: 11
Views: 1,037
Posted By DanH
Don't sneeze. ;) Seriously, big coffee can and a...

Don't sneeze. ;)

Seriously, big coffee can and a tablespoon. Micro in a bag is always messy.
Forum: Temp / Test / Misc. (posts deleted after 2 weeks) 01-08-2020, 08:00 AM
Replies: 4
Views: 255
Posted By DanH
Ignore the fashion police Dave. Everyone knows I...

Ignore the fashion police Dave. Everyone knows I do ;)
Forum: Safety 01-07-2020, 08:51 AM
Replies: 15
Views: 1,053
Posted By DanH
Paul, Two lbs/sec cooling flow and 900 grams per...

Paul,

Two lbs/sec cooling flow and 900 grams per m^3 are rough worst case estimates which assume cruise speed, and a Halon replacement requiring roughly double the concentration. And you should not...
Forum: RV General Discussion/News 01-06-2020, 07:13 PM
Replies: 34
Views: 4,395
Posted By DanH
GM Silver Birch on top, and a generic white pearl.

GM Silver Birch on top, and a generic white pearl.
Forum: Traditional Aircraft Engines 01-06-2020, 03:09 PM
Replies: 17
Views: 2,099
Posted By DanH
So the intent with this technique is to remove...

So the intent with this technique is to remove all the oil, leaving the debris more evident on the filter paper?
Forum: Safety 01-06-2020, 02:54 PM
Replies: 15
Views: 1,053
Posted By DanH
There are a few ways to look at the question. ...

There are a few ways to look at the question. Perhaps one is from the standpoint of mass flow. The Lycoming charts suggest most RVs are flowing 1.5 to 2 lbs of air per second. Let's go with 2 lbs...
Forum: Traditional Aircraft Engines 01-06-2020, 11:19 AM
Replies: 17
Views: 2,099
Posted By DanH
Tim, A little more steel on the magnet than I...

Tim,

A little more steel on the magnet than I like to see, but well within Lycoming guidelines. Fly it more, cut another filter.

Opinion worth what you paid for it ;)




Wash jar with a magnet...
Forum: RV General Discussion/News 01-05-2020, 07:31 PM
Replies: 34
Views: 4,395
Posted By DanH
Nice evening in Alabama, so I got in some...

Nice evening in Alabama, so I got in some formation practice. Quick over the shoulder shot from Stan Tew, passenger in Kirk Harrell's Mustang...
Forum: VAF Classifieds (posts in here deleted after 30 days) 01-05-2020, 07:42 AM
Replies: 2
Views: 206
Posted By DanH
Make sure it is a later model dock with a slot in...

Make sure it is a later model dock with a slot in the left side for the data connector. Early docks had no slot, and contact would knock the socket off the board internally.
Forum: Electronic Ignition Systems 01-02-2020, 07:58 AM
Replies: 253
Views: 87,274
Posted By DanH
I've slept since then, but pretty sure it is...

I've slept since then, but pretty sure it is 3-conductor shielded 18, straight from the Spruce catalog.



Nice.
Forum: RV General Discussion/News 01-02-2020, 07:28 AM
Replies: 22
Views: 2,919
Posted By DanH
It might take more than one issue to develop a...

It might take more than one issue to develop a true picture of editorial viewpoint. As a new subscriber, you have access to past issues; read the last 24 or so and see if you feel the same.
Forum: Close Calls / Lessons Learned 12-30-2019, 02:24 PM
Replies: 44
Views: 4,804
Posted By DanH
I believe you John. I'm sure no one disputes...

I believe you John. I'm sure no one disputes that the disc gets quite hot.

The proven way to reduce maximum disc temperature for any given braking situation is to increase disc mass...see the...
Forum: Close Calls / Lessons Learned 12-30-2019, 08:45 AM
Replies: 44
Views: 4,804
Posted By DanH
I dismiss the notion that cooling air scoops on...

I dismiss the notion that cooling air scoops on the wheelpants would be useful. They would not improve braking power or safety margin during a typical single stop landing, nor prevent fire if...
Forum: Close Calls / Lessons Learned 12-29-2019, 02:45 PM
Replies: 44
Views: 4,804
Posted By DanH
Let's not get carried away here. The brakes are...

Let's not get carried away here.

The brakes are rated by the amount of kinetic energy they can absorb in the form of heat. Maintain energy <= rating, and they are just fine.

Most RV's have...
Forum: Fiberglass 12-29-2019, 06:54 AM
Replies: 31
Views: 2,035
Posted By DanH
The foam roller leaves an even orange peel...

The foam roller leaves an even orange peel finish. Just sand until the orange peel is gone.
Forum: Fiberglass 12-28-2019, 02:46 PM
Replies: 31
Views: 2,035
Posted By DanH
Precisely.

Precisely.
Forum: Fiberglass 12-28-2019, 08:10 AM
Replies: 31
Views: 2,035
Posted By DanH
The divots and pinholes are due to air entrained...

The divots and pinholes are due to air entrained in the dry micro while mixing. A really dry mix will hold every bubble, while a wet mix will allow the bubbles to float to the top. I would not go...
Forum: RV General Discussion/News 12-27-2019, 09:29 AM
Replies: 19
Views: 1,496
Posted By DanH
I've flown a lot of 3 to 4 hr legs in mine, at...

I've flown a lot of 3 to 4 hr legs in mine, at 180 KTAS or more. I'm 6-3 and about 225.

Don't neglect variations on the base model. The Showplanes tip over includes narrowed cockpit rails, the...
Forum: RV-8/8A 12-27-2019, 07:53 AM
Replies: 11
Views: 961
Posted By DanH
Phillip, Pat's Full Up Auto Stop kit would be...

Phillip, Pat's Full Up Auto Stop kit would be worthwhile in an -8, as it would free your left hand for other things, like re-trimming. A solo RV-8 is typically trimmed far rearward for final...
Forum: RV-7/7A 12-25-2019, 08:04 AM
Replies: 64
Views: 7,216
Posted By DanH
These numbers (and of course certified prices)...

These numbers (and of course certified prices) are the key factor driving used RV values.

So, be of good cheer. Most of us thought our new RVs were too expensive back when, but now a nice one...
Forum: My RV Build Project 12-24-2019, 07:28 AM
Replies: 29
Views: 2,272
Posted By DanH
Your size estimates will work. Strongly...

Your size estimates will work. Strongly recommend white painted drywall, and a lot of insulation, wall and ceiling. Install enough lights to blind the unwary.

Climate control is huge. Upsize the...
Forum: RV Photo/Video URLs 12-23-2019, 11:05 PM
Replies: 4
Views: 702
Posted By DanH
Mehrdad, the specification of interest for a hot...

Mehrdad, the specification of interest for a hot application would be Tg, the glass transition temperature of the epoxy in use. It's the temperature at which the solid epoxy changes from hard to...
Forum: RV Photo/Video URLs 12-23-2019, 08:19 AM
Replies: 4
Views: 702
Posted By DanH
All the basics are there. Do remember the...

All the basics are there.

Do remember the Golden Rule of Forms and Molds....time spent creating a really accurate, well finished mold or form pays large dividends later...less sanding, less...
Forum: RV General Discussion/News 12-22-2019, 10:46 AM
Replies: 2
Views: 222
Posted By DanH
Anywhere downstream of the engine-driven pump,...

Anywhere downstream of the engine-driven pump, and set the limits at the suggested 14-45 psi.

Pressure below 14 is reason to turn on the boost pump and find a runway. Pressure above 45 is sender...
Forum: VAF Classifieds (posts in here deleted after 30 days) 12-22-2019, 10:42 AM
Replies: 2
Views: 615
Posted By DanH
Wanted: Nice 6A, 7A or 9A

I visited with a fellow yesterday who recently sold his 182, and wants to buy a clean A-model RV. Not a VAF reader, so I promised to post this note for him. If you have a nice airplane ready for a...
Forum: Fiberglass 12-20-2019, 01:00 PM
Replies: 31
Views: 2,035
Posted By DanH
Not really. The addition of G-flex would be...

Not really. The addition of G-flex would be better than rivets alone. However, the goal is to minimize relative movement between the aluminum and the glass tip. The specification of interest is...
Forum: Fiberglass 12-19-2019, 05:06 PM
Replies: 31
Views: 2,035
Posted By DanH
Probably true if the tip is simply riveted into...

Probably true if the tip is simply riveted into place per plans.

Try bonding the glass flange into the aluminum with Hysol 9430 or similar, riveting while wet, prior to fill.

900 hours and...
Forum: Fiberglass 12-19-2019, 01:13 PM
Replies: 31
Views: 2,035
Posted By DanH
I dunno Mark. Whole lot of airplanes out there...

I dunno Mark. Whole lot of airplanes out there with micro in various leading edge surfaces, including mine.

Here's an exercise I often invite new users to try. Mix some epoxy, and split it up...
Forum: Fiberglass 12-19-2019, 09:47 AM
Replies: 31
Views: 2,035
Posted By DanH
IF priming the sanded surface with neat mixed...

IF priming the sanded surface with neat mixed epoxy, use a small piece of cotton rag and rub it on to the surface, so there is no wet liquid, just damp. Wet epoxy guarantees dry micro won't spread...
Forum: Fiberglass 12-19-2019, 07:39 AM
Replies: 12
Views: 1,147
Posted By DanH
Forgot to mention foam density. Common 2 lb...

Forgot to mention foam density.

Common 2 lb density works fine when the form doesn't have a lot of detail. The RV-8 can have a very small fairing at the wheel pant, and the shape is not complex, so...
Forum: Fiberglass 12-19-2019, 07:07 AM
Replies: 31
Views: 2,035
Posted By DanH
Trent, I'm not sure sure what you're trying to do...

Trent, I'm not sure sure what you're trying to do here, so this is general in nature...

Microballoons can be combined with mixed epoxy in any proportion. There is no right or wrong, only a...
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