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Search: Posts Made By: krwalsh
Forum: Visual Flight Rules 04-28-2021, 02:11 PM
Replies: 15
Views: 22,176
Posted By krwalsh
Twice in the past two weeks

I flew from the Bay Area to the Chicago Area and back a week or so ago. I took the route that basically follows I-80 both times. On the way back I got snagged by cloud decks twice, but it was easy...
Forum: RV-8/8A 04-19-2021, 05:01 PM
Replies: 9
Views: 434
Posted By krwalsh
For What?

This depends on lot of things. Based on your question, I am guessing that you are new to CFD analysis, and therefore ease of use is probably the key requirement. You can do a lot of good with the...
Forum: RV General Discussion/News 04-08-2021, 07:13 PM
Replies: 10
Views: 823
Posted By krwalsh
Op Limits

My Op limits are very similar:
"Instrument flight is authorized if the instruments specified in 91.205(c) are installed, operational, and maintained in accordance with the applicable requirements of...
Forum: RV General Discussion/News 04-01-2021, 06:06 PM
Replies: 14
Views: 2,349
Posted By krwalsh
First, it is an Advisory Circular, so even if the...

First, it is an Advisory Circular, so even if the proposed changes go into effect, they are not a rule. It specifically states:
"The contents of this document do not have the force and effect of law...
Forum: Glass Cockpit 04-01-2021, 10:54 AM
Replies: 4
Views: 1,025
Posted By krwalsh
Did this Get Resolved?

Did this ever get resolved? I have never been able to get my G3X (non-touch) to channelize my SL-30. I recently made changes to the configs in the G3X, and now get green check marks for the RS-232...
Forum: Glass Cockpit 03-22-2021, 01:16 PM
Replies: 4
Views: 414
Posted By krwalsh
MCP601

This can be done with the MCP601 very inexpensively:

https://vansairforce.net/community/showthread.php?t=119508
Forum: Electronic Ignition Systems 03-01-2021, 11:00 AM
Replies: 19
Views: 2,081
Posted By krwalsh
Solder Sleeves

I have had luck with PIDG connectors for both the core and the shield of the RG-400. I used a solder sleeve onto the shield braid instead of the "strip it back and twist it" method. The solder...
Forum: Flight Testing 02-25-2021, 11:25 AM
Replies: 5
Views: 10,444
Posted By krwalsh
Not Specifically for RVs, but Editable

Not specific to RVs, but I did create a test flight protocol for the Cozy Mk-IV that has become widely adopted. It was developed at the same time as the EAA XP3 document, which eventually became the...
Forum: RV General Discussion/News 02-15-2021, 12:02 PM
Replies: 24
Views: 2,015
Posted By krwalsh
Partnership with Unequal Work Time

I entered a partnership on the plane I built. It had been built from the start by the original builder. He did excellent work, and got it to the stage of looking like an airplane. But it had all...
Forum: Electrical Systems 02-12-2021, 07:36 PM
Replies: 8
Views: 642
Posted By krwalsh
Why not this?

These can be used with numerous EFIS systems:

https://amploc.com/products/key100-open-loop-hall-effect-sensor?taxon_id=7
Forum: RV Ongoing Maintenance Issues 01-27-2021, 11:48 AM
Replies: 20
Views: 2,054
Posted By krwalsh
Listen to the Hardware

If it was me, I would listen to the hardware. It is telling you something if a fluid you thought was in a closed system in outside of that closed system. Did some fluid leak when you bled them in...
Forum: RV-8/8A 12-26-2020, 04:10 PM
Replies: 9
Views: 1,317
Posted By krwalsh
Knipex Pliers

For larger fasteners like this I really love the Knipex:

KNIPEX Tools - Pliers Wrench, Chrome (8603250), 10-Inch...
Forum: California 12-17-2020, 08:57 PM
Replies: 4
Views: 752
Posted By krwalsh
Yup

Thumbs up for Richard. Make sure your docs are up to snuff, send them to him to review. Makes the on-site inspection go smoothly. Super nice guy.
Forum: Traditional Aircraft Engines 12-15-2020, 12:24 PM
Replies: 13
Views: 3,146
Posted By krwalsh
This. I started chasing leaks on mine by...

This. I started chasing leaks on mine by purchasing a kit of fluorescent dye, UV LED flashlight, and the goggles. I discovered quickly that the dye is not required. The oil fluoresces all by...
Forum: Alternative Engines 12-14-2020, 01:56 PM
Replies: 81
Views: 7,939
Posted By krwalsh
Not yet, for the mission you may want

I worked as Sr Engineering Manager for Powertrain at Tesla's Fremont plant in charge of all of the automation to build Model S/X modules, packs, small drive (SDU), large drive (LDU), chargers, center...
Forum: RV Ongoing Maintenance Issues 11-20-2020, 12:29 PM
Replies: 14
Views: 1,839
Posted By krwalsh
McMaster-Carr

You can try McMaster-Carr if you know the length and extension force:

https://www.mcmaster.com/gas-struts/gas-springs-7/
Forum: RV Building Tips/Techniques 11-19-2020, 02:52 PM
Replies: 14
Views: 2,107
Posted By krwalsh
Ray Allen & Firgelli

You can use the Ray Allen Servos, which are used for trim, but can do other things as well: http://www.rayallencompany.com/products/servos.html

Another option is to use Firgelli Automations linear...
Forum: RV General Discussion/News 11-12-2020, 01:58 PM
Replies: 62
Views: 9,033
Posted By krwalsh
That's a pretty slow Long-EZ

To be fair, that's a fairly slow Long-EZ. The fastest one is Klaus, who clocked 258.65 MPH at the 2019 AirVenture Cup (http://sportairrace.org/sarl/node/4074). The typical Long-EZ/Cozy folks that...
Forum: RV Building Tips/Techniques 11-10-2020, 08:39 AM
Replies: 12
Views: 1,710
Posted By krwalsh
Hi-Lok Fasteners

You could achieve this using Hi-Lok fasteners. You would have to drill and ream the holes to the proper interference fit. Then you would need to install it. At work we have special pullers to pull...
Forum: Tools 10-28-2020, 09:49 AM
Replies: 15
Views: 3,727
Posted By krwalsh
eBay Sturtevant Beam Torque Wrenches

I was really successful in purchasing older beam style Sturtevant torque wrenches from eBay. I got a 1/4" drive to do everything under 100 in-lb, and a 3/8" drive to do everything else. Because...
Forum: RV Building Tips/Techniques 10-26-2020, 10:51 PM
Replies: 5
Views: 1,377
Posted By krwalsh
No

In short, no, they don't. You should be using only steel AN fittings on the engine to combat fatigue failures of the fittings themselves. But they do not loosen if properly torqued per...
Forum: Electrical Systems 10-26-2020, 10:14 PM
Replies: 2
Views: 959
Posted By krwalsh
This sounds correct

Remember that the VP-X is only accounting for devices that have their current run through them. If you ammeter is measuring alternator output (it sounds like it is) then the difference between the...
Forum: RV Building Tips/Techniques 10-23-2020, 01:21 PM
Replies: 38
Views: 5,981
Posted By krwalsh
Interesting

I would tend to think turning vanes would not want to be spaced like that. The balance you are trying to strike is the wall losses of the turning vane against the pressure loss caused by airflow...
Forum: California 09-16-2020, 01:53 PM
Replies: 11
Views: 1,532
Posted By krwalsh
The trick is that, at least early in the summer,...

The trick is that, at least early in the summer, their computer system did not have "Experimental" in it. If they could not put you down as a known aircraft type, it could not calculate the correct...
Forum: California 09-15-2020, 10:19 PM
Replies: 11
Views: 1,532
Posted By krwalsh
San Carlos

I am based at San Carlos, and Id recommend that. I believe overnight parking is $8 per night. If you want to rent a car, Hans at the pilot shop has a fleet of beautiful Mercedes that he rents. Or...
Forum: Flight Testing 09-15-2020, 08:43 AM
Replies: 14
Views: 4,098
Posted By krwalsh
Doug Grays method and the math in the provided...

Doug Grays method and the math in the provided GPS-PEC specify flying a constant ground track.
Forum: Flight Testing 09-14-2020, 11:00 PM
Replies: 14
Views: 4,098
Posted By krwalsh
GPS-PEC

The GPS-PEC from NTPS is basically the correct way to do this. I have a version of it I modified to only have the 4-leg version, that I have posted...
Forum: Electronic Ignition Systems 09-11-2020, 09:04 AM
Replies: 25
Views: 3,284
Posted By krwalsh
Coax Connection

Im with Dan in this one. Id carefully check the crimp to the shield portion of the coaxial cable into the coil. I really disliked the way this was supposed to be done, gathering the shield into a...
Forum: Flight Testing 08-25-2020, 02:44 PM
Replies: 26
Views: 5,118
Posted By krwalsh
Report the Cement Plant

I thought exactly the same thing when I saw this. But I think it is more likely to be the Permanente Ridge cement plant that is directly South West of Moffett....
Forum: California 08-14-2020, 10:40 AM
Replies: 5
Views: 1,491
Posted By krwalsh
Placerville & Swansboro

Placerville hangar space seems tough to come by. I think there may be a few hangars were you could tuck an RV under another plane, but it would be a situation where you'd have to ask around. I...
Forum: RV General Discussion/News 08-05-2020, 06:08 PM
Replies: 13
Views: 4,831
Posted By krwalsh
Two Things

First, I'm so glad my plane is an experimental, and I am the holder of the Repairman's Certificate for it. For $6000 I can buy all the carbon fiber I want, make my own molds, put wheel pants on my...
Forum: Flight Testing 07-28-2020, 02:00 PM
Replies: 14
Views: 4,098
Posted By krwalsh
Thanks!

Thanks, I appreciate it. Please use it, modify it, cut it up, or use it to keep your parakeet cages clean. As the intro says, I created it out of a lack of similar documents available, and having...
Forum: Flight Testing 07-28-2020, 12:48 PM
Replies: 14
Views: 4,098
Posted By krwalsh
Possibly

I would only issue the caution that in most of the glass cockpits, the EFIS is doing the vector math between your ground speed, ground track, KTAS, and heading to solve for the wind vector. Ground...
Forum: Flight Testing 07-28-2020, 11:48 AM
Replies: 14
Views: 4,098
Posted By krwalsh
Flight Test Cards for GPS-PEC

The referenced documents are available...
Forum: Safety 07-09-2020, 04:46 PM
Replies: 21
Views: 5,158
Posted By krwalsh
Local

Frank

I just realized you?re in Sausalito. I have my flight suit (38R) and Nomex high tops (9.5) at my hangar at KSQL. If those would be any help, let me know and I can figure out how to get them...
Forum: Safety 07-09-2020, 11:14 AM
Replies: 21
Views: 5,158
Posted By krwalsh
Nomex & Cotton

I've been on fire once before in my life (not in an airplane) and it is not something I'd wish on my worst enemy. So for my first flight, I went with the following:

Nomex Flight suit. Search eBay...
Forum: Traditional Aircraft Engines 06-19-2020, 11:29 AM
Replies: 21
Views: 3,975
Posted By krwalsh
Thumper

I always thought it would be a fun project to take a cylinder and use it as a basis for a thumper motorcycle engine. 1.5L single into a bobber frame. I mean, who needs fillings in your teeth anyway?
Forum: RV-7/7A 05-21-2020, 10:39 AM
Replies: 18
Views: 1,948
Posted By krwalsh
7000 Series

Beware that most road signs are made from 7000 series aluminum, specifically 7075. You will not be able to bend it without cracking it unless it is annealed to -0 temper. Wonderfully strong stuff,...
Forum: Electrical Systems 05-19-2020, 10:07 AM
Replies: 5
Views: 778
Posted By krwalsh
ebay AFM8

I got my AFM8 on ebay a few years back for about $100. Buy the positioners from DMC or from Stein.
Forum: California 05-18-2020, 11:40 PM
Replies: 11
Views: 2,319
Posted By krwalsh
PCT

Sweet! Boy, hiking the PCT is on my list for sure. I've done pieces of it just hiking the Sierras. The John Muir Trail out of Mammoth is incredible, stopping at Thousand Islands Lake. My kids are...
Forum: California 05-18-2020, 10:58 PM
Replies: 11
Views: 2,319
Posted By krwalsh
KTVL

Wherever you cross the mountains, be sure to give lots of clearance for the wind coming over the ridges. Earlier in the mornings are better. If the winds are reported at more than 15 or 20 over the...
Forum: COMM 04-30-2020, 11:18 PM
Replies: 4
Views: 791
Posted By krwalsh
APRS

Search for APRS for various ways to make a 2M antenna work and novel things to do with your ham license.
Forum: Traditional Aircraft Engines 03-27-2020, 03:45 PM
Replies: 6
Views: 1,342
Posted By krwalsh
Nord-Lock Washers

Take a look at this video of various lock washers and the relative ineffectiveness of them:

https://youtu.be/IKwWu2w1gGk

You can purchase Nord-Lock washers from McMaster-Carr...
Forum: RV General Discussion/News 03-27-2020, 10:19 AM
Replies: 43
Views: 8,528
Posted By krwalsh
Bay Area GA

Here in the San Francisco Bay area, GA is "open," but in reality I doubt there is much flying going on. I get emails from the county where I have my hangar letting me know that the airport office is...
Forum: RV General Discussion/News 03-26-2020, 02:34 PM
Replies: 14
Views: 2,531
Posted By krwalsh
Cut it in half

Axel-

You?ll have more success if you make this in two halves. Build a joggle into the mold so you can cleco it together and then put a 2? tape over the seam. I did a similar mold for an...
Forum: RV General Discussion/News 03-20-2020, 01:07 PM
Replies: 3
Views: 664
Posted By krwalsh
Same a it ever was

As a Cozy builder and pilot, you'll find that 99% of the engines for the pushers are the same as tractor configuration and rotate left. We do it simply based on parts availability, commonality, etc....
Forum: California 03-16-2020, 09:18 PM
Replies: 7
Views: 785
Posted By krwalsh
+1 for Richard. Great guy, easy to work with. I...

+1 for Richard. Great guy, easy to work with. I sent him all if my paperwork ahead of time to make sure all the i?s were dotted and t?s were crossed. He had everything read thru and checked out,...
Forum: Glass Cockpit 01-15-2020, 12:02 PM
Replies: 16
Views: 4,779
Posted By krwalsh
Form Factor and Price

I'll take this form factor with the G5 functionality and price, please. Put me down for two of them.

:)
Forum: GPS 01-08-2020, 05:17 PM
Replies: 57
Views: 14,658
Posted By krwalsh
Oh, it's worthless now. It'll cost you just to...

Oh, it's worthless now. It'll cost you just to pull it out and dispose of it properly. I'll do you a favor, just ship it to me and I'll take care of it for you. :D
Forum: Safety 01-06-2020, 04:58 PM
Replies: 15
Views: 2,191
Posted By krwalsh
Ground Fire

This was the specific case I was thinking of when I bought my fire suppression system and installed it:

http://www.deford.com/cozy/fire.html

Granted, I took other lessons from this, including...
Forum: Safety 01-06-2020, 12:02 PM
Replies: 15
Views: 2,191
Posted By krwalsh
AFFF

I installed a fires suppression system in my (non-RV) plane. But I did it because it is a pusher configuration and it is much more difficult to know if you have a fire situation until it is probably...
Forum: Fiberglass 12-19-2019, 11:03 AM
Replies: 32
Views: 11,920
Posted By krwalsh
Flox, Duct Tape, and the Cory Bird Method

Having built an entire airplane using this method, I have a few points that may help:

If you have an edge you care about staying sharp despite being impacted, use flox (flocked cotton mixed with...
Forum: RV General Discussion/News 12-06-2019, 12:54 PM
Replies: 17
Views: 2,398
Posted By krwalsh
Wantin' ain't Gettin'

Well, as I often tell my kids: "Wantin' ain't gettin'"
Forum: RV General Discussion/News 12-06-2019, 11:21 AM
Replies: 17
Views: 2,398
Posted By krwalsh
Four Hangars?

Seems like with that height limitation, you're only really going to fit a standard single-engine GA plane. In that case, depending on taxiway access, why not break it into four 30x32' hangars? A...
Forum: RV General Discussion/News 11-05-2019, 03:01 PM
Replies: 5
Views: 913
Posted By krwalsh
Shade Hangars

I could not do my Phase 1 out of SQL, so I moved my plane to Livermore. I ended up parked on the ramp in front of the tower, but toward the end of my stay (~3 months) there, they did offer me a...
Forum: RV General Discussion/News 10-03-2019, 10:55 AM
Replies: 31
Views: 5,068
Posted By krwalsh
In fact, there is a 50 page document of...

In fact, there is a 50 page document of exceptions:
https://www.cdtfa.ca.gov/formspubs/pub61.pdf

In my case I kept every receipt of everything I ever bought, so if the use tax man cometh, I am armed...
Forum: RV General Discussion/News 09-23-2019, 04:03 PM
Replies: 3
Views: 917
Posted By krwalsh
Multiple Navigators

Multiple Navs is not ridiculous. My plane has two, as do many planes, especially those set up for IFR.

The bigger question is do you want to pay for two sets of database updates, because the...
Forum: RV General Discussion/News 08-23-2019, 01:45 PM
Replies: 12
Views: 2,682
Posted By krwalsh
Maybe...

I suppose "Well, I pulled it through by hand, and it feels ok to me," might be a "compression check." But Lycoming has SI-1191...
Forum: RV General Discussion/News 08-23-2019, 12:02 PM
Replies: 12
Views: 2,682
Posted By krwalsh
Correct-ish

This is correct-ish. The newer (last ~2 years) boilerplate operation limitations that the DARs are using has a statement that "No person may operate this aircraft unless within the preceding 12...
Forum: RV General Discussion/News 06-25-2019, 08:18 AM
Replies: 19
Views: 2,913
Posted By krwalsh
While you wait

I had mine updated for free by Garmin st the tent while I waited. Fast and easy.
Forum: Engine Monitors 05-09-2019, 10:17 PM
Replies: 2
Views: 680
Posted By krwalsh
1 Hz

Data is stored in the G3X data file at approximately 1Hz. You can verify by looking at the time stamps in a data file exported to Excel.
Forum: California 05-08-2019, 01:51 PM
Replies: 5
Views: 1,249
Posted By krwalsh
Oakland Rentals

I have my plane at SQL, and recently moved to Alameda, so moving to KOAK would be great. But I've heard bad things about not being able to store tools at the hangar, not having real electrical...
Forum: California 05-06-2019, 01:09 PM
Replies: 10
Views: 1,362
Posted By krwalsh
It Depends on Where You're Going

Depends on where you're ultimately going, but Modesto, Livermore, Tracy are all good GA options. Lodi is usually a drop zone, so be careful with the parachuters if you go there. They announce on...
Forum: California 03-05-2019, 02:57 PM
Replies: 5
Views: 757
Posted By krwalsh
T&P Aero Finishers

I have not used them, but have heard good things about T&P. They've painted a number of Oshkosh award-winning planes.

http://www.tpaerorefinishers.com/
Showing results 1 to 64 of 329

 
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