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Search: Posts Made By: DanH
Forum: RV General Discussion/News Yesterday, 11:55 AM
Replies: 61
Views: 3,477
Posted By DanH
https://www.danhorton.net/VAF/AirVenture%20Arrival...

https://www.danhorton.net/VAF/AirVenture%20Arrival%20Flight%20Practice/Dilbert.jpg
Forum: Traditional Aircraft Engines Yesterday, 11:37 AM
Replies: 39
Views: 4,670
Posted By DanH
Please report back after you get a clear idea...

Please report back after you get a clear idea about your new temperatures.
Forum: Traditional Aircraft Engines Yesterday, 08:58 AM
Replies: 39
Views: 4,670
Posted By DanH
Simply inspect the units for a jumper between...

Simply inspect the units for a jumper between terminals 2 and 3.
Forum: Reviews Yesterday, 07:15 AM
Replies: 7
Views: 971
Posted By DanH
Mostly a matter of installing an independent...

Mostly a matter of installing an independent electrical supply for each.

Mogas no issue, as the Surefly offers some level of choice in timing.
Forum: Traditional Aircraft Engines Yesterday, 07:13 AM
Replies: 39
Views: 4,670
Posted By DanH
What about those P-mag jumpers?

What about those P-mag jumpers?
Forum: RV General Discussion/News Yesterday, 07:05 AM
Replies: 61
Views: 3,477
Posted By DanH
Last evening I went out and flew a long string of...

Last evening I went out and flew a long string of screwy right hand patterns, mostly power at idle, continuous turns to touchdown, from a downwind far closer to the runway than I normally...
Forum: Southeast Yesterday, 06:34 AM
Replies: 12
Views: 277
Posted By DanH
Mike, I'm based at 08A, just across I-65. You...

Mike, I'm based at 08A, just across I-65. You need the demo ride in my RV-8.

There is an RV-12 underway just west of the Prattville airport.
Forum: RV-10 Yesterday, 06:29 AM
Replies: 16
Views: 1,030
Posted By DanH
Given the wide speed range of an RV model,...

Given the wide speed range of an RV model, variable exit area will far superior to fixed louvers.

I'd suggest arranging things so exit area varies from 25% less than stock to 50% more than stock,...
Forum: RV General Discussion/News 06-23-2019, 11:40 AM
Replies: 61
Views: 3,477
Posted By DanH
It's mentioned a lot, but when was the last time...

It's mentioned a lot, but when was the last time someone actually bent metal with an inadvertent stall between Ripon and traffic pattern?

Using the search terms "state = Wisconsin" and keyword...
Forum: RV General Discussion/News 06-23-2019, 08:23 AM
Replies: 61
Views: 3,477
Posted By DanH
You will be descending into the maelstrom, and...

You will be descending into the maelstrom, and the people below you are robbed of see-and-avoid.

The practical reason for the 135 knot approach is so typical light twins can stay above Vsse, or in...
Forum: Places To Fly...Things to See...Things to Eat 06-23-2019, 07:58 AM
Replies: 6
Views: 391
Posted By DanH
Coming from the SE, Starke County (KOXI) has been...

Coming from the SE, Starke County (KOXI) has been a reliable stop. Showing $4.14 on AirNav today. Usually have hot dogs for the OSH traffic. Paved N-S, turf E-W.

From there, fly the Chicago...
Forum: RV General Discussion/News 06-22-2019, 07:28 PM
Replies: 61
Views: 3,477
Posted By DanH
Capable of higher performance is irreverent. The...

Capable of higher performance is irreverent. The NOTAM is specific...the high approach is for aircraft unable to operate comfortably at 90 knots. All RV's operate just fine at 90 knots.

Here's the...
Forum: RV General Discussion/News 06-21-2019, 06:00 PM
Replies: 40
Views: 3,350
Posted By DanH
Thank you gentlemen.

Thank you gentlemen.
Forum: Traditional Aircraft Engines 06-21-2019, 11:45 AM
Replies: 39
Views: 4,670
Posted By DanH
Velocity alone tells nothing about cubic volume,...

Velocity alone tells nothing about cubic volume, and ultimately mass flow rate. You would also need to know the area of the duct, at a minimum.

Further, an exit duct can be used to lower pressure...
Forum: RV General Discussion/News 06-21-2019, 06:44 AM
Replies: 40
Views: 3,350
Posted By DanH
Ahhhh, the new gear. That explains a lot. Mind...

Ahhhh, the new gear. That explains a lot. Mind posting some photos of the new gear? It would be interesting to compare the degree of exit blockage, old vs new.



Just for fun, make some...
Forum: Temp / Test / Misc. (posts deleted after 2 weeks) 06-20-2019, 02:04 PM
Replies: 7
Views: 466
Posted By DanH
Don's email worked a week or two back. Delta...

Don's email worked a week or two back. Delta Pop is a charter sponsor for the RV Social. In fact, Don is sorta THE charter sponsor, given it was he who, back in 2011, assured one of the Sosnoski...
Forum: Traditional Aircraft Engines 06-20-2019, 08:22 AM
Replies: 39
Views: 4,670
Posted By DanH
Four 2" dia scats = 12.56 sq in area. A single...

Four 2" dia scats = 12.56 sq in area. A single 4" scat is also 12.56 sq in area. However, the four 2" scats have a total circumference of 25.12 vs 12.56 for the single 4" tube. Bottom line is that...
Forum: RV General Discussion/News 06-20-2019, 06:28 AM
Replies: 40
Views: 3,350
Posted By DanH
The OP-58 kit may require less fabrication on an...

The OP-58 kit may require less fabrication on an A-model. I realize some owners are not builders.
Forum: RV General Discussion/News 06-20-2019, 05:55 AM
Replies: 40
Views: 3,350
Posted By DanH
https://www.danhorton.net/VAF/Lower%20Cowl%20Louve...

https://www.danhorton.net/VAF/Lower%20Cowl%20Louvers%20for%20679/45%20Degree%20Cut.jpg



Yes, you would need to modify and/or eliminate the A-model brackets. What do they support?
Forum: RV General Discussion/News 06-19-2019, 09:13 AM
Replies: 40
Views: 3,350
Posted By DanH
Same here. Scott, curiosity questions please. ...

Same here.

Scott, curiosity questions please. Assuming our intrepid owner is forced to fly with crappy baffling and too much timing advance...

(1) Why not just remove the core, make the 4 ply 9-oz...
Forum: Traditional Aircraft Engines 06-18-2019, 04:51 PM
Replies: 5
Views: 1,233
Posted By DanH
To be frank, I ordered a set of Brillman adapters...

To be frank, I ordered a set of Brillman adapters and sent them back. I'm sure they will work, but they were not as good as adapters from EFII and SDS.
Forum: Traditional Aircraft Engines 06-18-2019, 12:20 PM
Replies: 20
Views: 1,133
Posted By DanH
A straw man. More advance means higher CHT....an...

A straw man. More advance means higher CHT....an absolute fact. With or without advance, too cool when LOP is an invitation to reduce mass flow and lose some drag.

With the RV-8, same conditions...
Forum: Traditional Aircraft Engines 06-18-2019, 06:41 AM
Replies: 20
Views: 1,133
Posted By DanH
I think Mehrdad's data and yours are a match...

I think Mehrdad's data and yours are a match within the scatter.



...and varies with equipment.

For example, you've gathered timing data with a 540 in a Rocket. More advance means higher CHT. ...
Forum: RV General Discussion/News 06-17-2019, 09:38 AM
Replies: 12
Views: 2,104
Posted By DanH
Fiberfrax felt has an organic binder (think...

Fiberfrax felt has an organic binder (think "glue") to tie all the fibers together. Burn a piece of it with a torch. The binder will smoke and may burn. When it's gone, the fibers will be loose...
Forum: RV General Discussion/News 06-17-2019, 06:13 AM
Replies: 61
Views: 3,477
Posted By DanH
Make a few of those practice landings from a...

Make a few of those practice landings from a close right hand pattern, required for 27.

If sent to the second dot, clear the runway to the side as soon as practical.

Here's one for The Walk Of...
Forum: Traditional Aircraft Engines 06-16-2019, 06:04 PM
Replies: 20
Views: 1,133
Posted By DanH
Study this, made available courtesy of the...

Study this, made available courtesy of the author:

https://www.danhorton.net/Misc/Nigel%20Speedy%20-%20Ignition%20Advance%20.pdf



Not necessarily.
Forum: RV General Discussion/News 06-16-2019, 02:26 PM
Replies: 61
Views: 3,477
Posted By DanH
I'll second that. Gary won't be "that...

I'll second that. Gary won't be "that guy".
Forum: Traditional Aircraft Engines 06-15-2019, 10:04 PM
Replies: 10
Views: 684
Posted By DanH
Absolutely. Switch to a multigrade. Much lower...

Absolutely. Switch to a multigrade. Much lower viscosity when cold, same viscosity when hot.
Forum: RV General Discussion/News 06-14-2019, 08:13 PM
Replies: 25
Views: 2,225
Posted By DanH
I seem to recall a picture of you guys crawling...

I seem to recall a picture of you guys crawling under a gate.
Forum: RV General Discussion/News 06-14-2019, 10:19 AM
Replies: 25
Views: 2,225
Posted By DanH
Ran across a few photos from, let's see...

Ran across a few photos from, let's see now...2016:

Folks starting to arrive. Airshow must be over.

https://www.danhorton.net/VAF/2019%20RV%20Social/IMG_2676.JPG

Jay Pratt, RV Central. Everybody...
Forum: ADS-B 06-13-2019, 06:11 PM
Replies: 243
Views: 19,535
Posted By DanH
There is a start up period during which the...

There is a start up period during which the GDL-82 broadcasts the real ICAO and N-number. Start around post 153.
Forum: RV-8/8A 06-13-2019, 07:12 AM
Replies: 12
Views: 1,875
Posted By DanH
Agree 100%. Obvious craftsmanship issues are a...

Agree 100%. Obvious craftsmanship issues are a red flag. There will probably be more.

For example, clean away the proseal at the countersunk rivet line along the rear flange. Gauging the diameter...
Forum: RV General Discussion/News 06-12-2019, 08:43 PM
Replies: 5
Views: 349
Posted By DanH
Me too, in the mid 80's. And some of it again...

Me too, in the mid 80's. And some of it again last month ;)

Blair's 4-stroke text goes a lot deeper.



I suspect anyone involved with the design is long gone.
Forum: Traditional Aircraft Engines 06-12-2019, 05:37 PM
Replies: 22
Views: 1,901
Posted By DanH
I was thinking about the restricted RPM/manifold...

I was thinking about the restricted RPM/manifold pressure combination. Yep, it was lovely at normal settings. The problem was flying an approach. The prohibited range shook the airframe, but...
Forum: RV General Discussion/News 06-12-2019, 05:27 PM
Replies: 5
Views: 349
Posted By DanH
Those are angle valve intake pipes. M1B pipes...

Those are angle valve intake pipes. M1B pipes are not the same, but they do extend into the sump plenum.



That's the idea.

For max power we would prefer to have a pulse of high pressure arrive at...
Forum: RV General Discussion/News 06-12-2019, 11:05 AM
Replies: 5
Views: 349
Posted By DanH
Seat of the pants, I doubt there is much...

Seat of the pants, I doubt there is much difference between any of the choices. Given the same engine on the same day, a dyno should show a wee bit more for a less restrictive intake. In my mind,...
Forum: Traditional Aircraft Engines 06-11-2019, 04:51 PM
Replies: 22
Views: 1,901
Posted By DanH
36 less one. Just polishing the pins.......

36 less one. Just polishing the pins....



Good discussion of prop clocking here some years ago, with input from Les Dowd. I put an example of blade ringing in post 39.

Propeller mass moment of...
Forum: Traditional Aircraft Engines 06-11-2019, 06:52 AM
Replies: 22
Views: 1,901
Posted By DanH
Hmmm. Hey boss, did they say exactly that? ...

Hmmm. Hey boss, did they say exactly that?

Pendulum absorbers damp a vibratory order. Generally, in pendulum design the roller and bushing diameters set the order. A particular propeller may be...
Forum: Electronic Ignition Systems 06-10-2019, 05:39 AM
Replies: 73
Views: 6,796
Posted By DanH
Let's not launch into power supply in this...

Let's not launch into power supply in this thread. Important subject, but not specific to the Surefly. I'm just sayin'...
Forum: RV General Discussion/News 06-09-2019, 02:21 PM
Replies: 6
Views: 889
Posted By DanH
Whoops, yes, 1956 was the year of the air races...

Whoops, yes, 1956 was the year of the air races (Wittman won). The event was run by a local civic group; the EAA was a guest, so to speak. The 1958 Fly-In was in Milwaukee.

Jim, tell us some...
Forum: RV General Discussion/News 06-09-2019, 06:52 AM
Replies: 6
Views: 889
Posted By DanH
Oshkosh History

If you're flying to OSH next month, you've probably downloaded the 2019 NOTAM. However, in your rush to examine the arrival procedures, you may or may not have looked at the photo on the front...
Forum: ADS-B 06-09-2019, 04:38 AM
Replies: 20
Views: 1,951
Posted By DanH
Not long ago, XM changed the refresh rate to 2.5...

Not long ago, XM changed the refresh rate to 2.5 minutes.

https://siriusxmcommunications.com/sxmaviation/daretocompare.html

Sirius claims that ADS-B regional radar updates every 5 minutes, and...
Forum: Fiberglass 06-08-2019, 04:23 AM
Replies: 6
Views: 605
Posted By DanH
I'm with David, assuming the honeycomb isn't...

I'm with David, assuming the honeycomb isn't contaminated with oil. There is really nothing to lose by giving it a shot.

Suggested methods are good. Only detail I'd add is to grind or sand the...
Forum: Electronic Ignition Systems 06-08-2019, 04:02 AM
Replies: 39
Views: 2,832
Posted By DanH
An interesting report. Perhaps clean a set and...

An interesting report. Perhaps clean a set and see if LOP capability returns? Or leave them dirty and reduce the gap a little?

E-Mag purposely limits spark energy, and debates the need for more. ...
Forum: VAF Classifieds (posts in here deleted after 30 days) 06-07-2019, 02:27 PM
Replies: 17
Views: 2,082
Posted By DanH
Wow, that's too bad. Prettiest runway I've seen.

Wow, that's too bad. Prettiest runway I've seen.
Forum: Electronic Ignition Systems 06-07-2019, 06:24 AM
Replies: 39
Views: 2,832
Posted By DanH
Bill, were you able to find the professor's...

Bill, were you able to find the professor's report?
Forum: RV General Discussion/News 06-05-2019, 09:54 AM
Replies: 11
Views: 1,040
Posted By DanH
Strips of fiberfrax to shadow the pipes, under...

Strips of fiberfrax to shadow the pipes, under the HD self-stick foil sold by Vans. If the interior of the cowl is finish painted, the foil sticks without any other...
Forum: RV-8/8A 06-05-2019, 07:06 AM
Replies: 10
Views: 1,027
Posted By DanH
Evan, that oil cooling performance can be...

Evan, that oil cooling performance can be improved. Exactly what to do depends on installation details.



Not very likely, for several reasons.

Mass flow (air) through the oil cooler is a function...
Forum: Alternative Engines 06-05-2019, 06:05 AM
Replies: 375
Views: 50,115
Posted By DanH
https://www.summitracing.com/parts/ear-013erl

https://www.summitracing.com/parts/ear-013erl
Forum: Electronic Ignition Systems 06-04-2019, 03:19 PM
Replies: 73
Views: 6,796
Posted By DanH
Free download for Kitplanes subscribers:...

Free download for Kitplanes subscribers: www.kitplanes.com May 2017 issue if I recall correctly.



Yes. Clocking the installation is common with a P-mag, same thing here. No unicorn.
Forum: Electronic Ignition Systems 06-04-2019, 12:50 PM
Replies: 73
Views: 6,796
Posted By DanH
Yes. Like any of the available systems with a...

Yes.

Like any of the available systems with a pre-set map (notably Electroair, P-mag, and Lightspeed), the pre-set tends toward LOP cruise, which is typically still too advanced to be optimum for...
Forum: Electronic Ignition Systems 06-04-2019, 09:11 AM
Replies: 73
Views: 6,796
Posted By DanH
I previously wrote "Honest discussion, messy as...

I previously wrote "Honest discussion, messy as it may be, is how potential users determine if it's the best choice for their particular set of needs and interests." Your Husky application is an...
Forum: Electronic Ignition Systems 06-03-2019, 04:45 PM
Replies: 73
Views: 6,796
Posted By DanH
Scott, can I be a third party with no interest in...

Scott, can I be a third party with no interest in the system one way or the other? After all, I'm not flying any of the store-bought aircraft EIs, or even a mag. My interest is keeping the BS to a...
Forum: RV General Discussion/News 06-03-2019, 01:39 PM
Replies: 25
Views: 2,225
Posted By DanH
2019 Oshkosh RV Social

https://www.danhorton.net/Misc/16lzsqp.jpg

2019 Oshkosh RV Social

Monday July 22nd

1366 WEST WAUKAU AVENUE


Starts When The Airshow Ends
Forum: Safety 06-03-2019, 07:14 AM
Replies: 3
Views: 676
Posted By DanH
Clauido, that's good work. Could you identify...

Clauido, that's good work.

Could you identify the high temperature glue used to attach the aluminum- backed woven fiberglass sheet to the cabin side of the firewall sample?

The sheet of metallic...
Forum: Electronic Ignition Systems 06-02-2019, 06:30 AM
Replies: 73
Views: 6,796
Posted By DanH
Thanks Gil. Good catch. From post #5. ...

Thanks Gil. Good catch.



From post #5. http://www.vansairforce.com/community/showpost.php?p=1349511&postcount=5



Nope. Set us straight. Is your "high compression IO-360" parallel or angle...
Forum: Electronic Ignition Systems 06-01-2019, 10:56 PM
Replies: 73
Views: 6,796
Posted By DanH
2700 RPM at any altitude over 9000. Not extreme...

2700 RPM at any altitude over 9000. Not extreme for a fixed pitch RV.



Seriously Tom, ranting helps no one. If you have useful information to share, I'm sure your contribution would be...
Forum: Electronic Ignition Systems 06-01-2019, 11:25 AM
Replies: 73
Views: 6,796
Posted By DanH
Your observation matches mine, and Marvin...

Your observation matches mine, and Marvin McGraw's; sweet spot about 28 degrees.

The angle valve requires less advance. Given all the 390's going into 14's these days, it is why I object to canned...
Forum: Electronic Ignition Systems 06-01-2019, 11:07 AM
Replies: 73
Views: 6,796
Posted By DanH
In the context of this thread, it would be 38...

In the context of this thread, it would be 38 BTDC, the Surefly maximum.



Ok, so quit arguing against an absolutely safe alternative, one requiring no deep knowledge or test pilot skills...fixed...
Forum: Electronic Ignition Systems 06-01-2019, 06:16 AM
Replies: 73
Views: 6,796
Posted By DanH
Most folks in the airplane world have failed to...

Most folks in the airplane world have failed to note a great divergence. On one hand we have the LOP operating mantra promoted by GAMI/APS. It assumes fixed timing, typically magneto based. Going LOP...
Forum: RV Photo/Video URLs 05-31-2019, 06:58 PM
Replies: 9
Views: 1,294
Posted By DanH
What, no snow? It's only June!

What, no snow? It's only June!
Forum: Electronic Ignition Systems 05-30-2019, 05:09 PM
Replies: 73
Views: 6,796
Posted By DanH
Nope. You would need to reliably seal it somehow...

Nope. You would need to reliably seal it somehow so it always reported ~29.92. That has risks.
Showing results 1 to 62 of 500

 
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