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Well Professor Google has something different to say...

https://www.emcstandards.co.uk/cable-shield-grounded-at-one-end-only

I will research more - but one of the reasons I recalled is if your primary grounding strap to whatever becomes compromised - having it grounded at both ends makes THAT the grounding strap...

I need to read more...  somewhere in all the opinions is the facts (and maybe reasons to do it either way...)

 

 

 

 

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2 hours ago, mquinn6 said:

Well Professor Google has something different to say...

https://www.emcstandards.co.uk/cable-shield-grounded-at-one-end-only

I will research more - but one of the reasons I recalled is if your primary grounding strap to whatever becomes compromised - having it grounded at both ends makes THAT the grounding strap...

You might be right.  I just don't know enough to say.  Generally I just do what they tell me to do regarding wiring but when I installed the power for the Lightspeed, I used some two-wire twisted cable with a shield.  Lightspeed does not require that sort of cable.  He uses a single-wire with a shield.  The power travels up the inner wire and returns through the shield (pic).   I figured it would not hurt to ground the shield of my cable at one end so that's what I did.  It may not have been necessary.   I think I'll redraw that again and use Lightspeed's wiring (and keep my own bunged up wiring to myself).  🙂

But yes, I'm sure you are correct about grounding audio wire shields at only one end--the radio end.  I have a friend using a Sigtronic intercom that picks up the transponder pulse.  The Sigtronic diagram does not call for any shielding.  I showed him the PM1000 diagram which calls for shielding.  Better intercom, I think.

LSEpower.jpg

Edited by Kent Ashton

-Kent
Cozy IV N13AM-750 hrs, Long-EZ-85 hrs and sold

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The rule of thumb we have used in industrial electronics, ground the shield on the source end for DC signals, and both ends for AC. When you have DC that is pulsed at higher frequency (encoders for example) the "guidelines" get murky. For high frequency encoders we have done it both ways, with good results either way.

The why is complex...

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Good reminder, Barry.   On a different topic, my dual Lightspeed Plasmas use manifold pressure inputs to vary timing.  The input into the boxes fits a small 1/8" ID hose so I was using small Nylaflow lines forward of the firewall.  I noticed that the lines had avgas residue in them and blew them out but I also found the "T" connector was completely clogged with a gummy avgas residue which was probably blocking pressure.  No telling how long that had been there.  I have about 750 hours on the systems.  I think I will go to bigger lines.

The manifold pressure is taken off a primer fitting (with a tiny hole) screwed into the intake of one cylinder, thence via a 1/8 soft copper line through the firewall--about 3 feet of line, then to the Nylaflow and T divider.  I am not sure why avgas would get moved that far away from the intake but the lines need a regular check.

IMG_2452.JPG


-Kent
Cozy IV N13AM-750 hrs, Long-EZ-85 hrs and sold

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that is strange - my understanding the MAP is a diaphragm so that cavity between the bung on the engine where you pick up pressure - to whatever gauge it is should be an air pocket...  2 thoughts... 1 - a VERY small leak 2- plumbed so that gravity is not your friend. (combined).

IF the residue of where the bung is on the engine allows fluid (from the walls) to somehow cover the pickup point..   Maybe even (rather than a leak) just heat and cooling (expand contract) could pull this into the line... (then gravity does the rest...).  Does the line descend just as it leaves the engine MAP point?

I would think a small line is better than a big - just to provide more immediate reaction? (and not take up space in the airplane (and weight))

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It's also the color of your lines. Standard nylaflow is not fuel rated. Nylaflow LM is fuel rated. Not sure if that is an issue...

Are your lines nylaflow? Looks like it might be something else.

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36 minutes ago, Barry said:

It's also the color of your lines. Standard nylaflow is not fuel rated. Nylaflow LM is fuel rated. Not sure if that is an issue...Are your lines nylaflow? Looks like it might be something else.

Yes, they are Nylaflow.  There should only be air in them, however.  Klaus just told me this size line with a primer fitting in the cylinder head was too restrictive and I should drill out the primer fitting and use a slightly larger line  (min .1" ID)


-Kent
Cozy IV N13AM-750 hrs, Long-EZ-85 hrs and sold

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OMG!!!   I can hear Klaus' voice explaining what you just said Kent!!!!  LOL!!!!  (I missed the "." before the "1" above the first time I read it too - which made it absolutely hilarious in my head!!!).  Klaus knows a think or two about getting these things to perform for sure!

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Gotcha. I always assume that vacuum lines will get gasoline vapor at some point, which will eventually return to a liquid state IMO. On cars anyway. Same thing should be true of aviation engines I *think*. 

That is pretty small at 0.079 ID. The 3/16 is 0.111 and the 1/4 is 0.15, which I'm sure you already know. I like the nylaflow hose for many things. Tough and durable, and holds its shape very well. I use a lot of the 3/8's in industrial applications.

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A rant about JP Instruments:  I used their Slimline Tach, a nice little digital tach which expect a +5V, 1 pulse per rev signal.  My Lightspeed Plasma puts out a +10V, 2 pulses per rev.  So I need to fool the tack into thinking my 4-cyl engine is an 8-cyl.   Their literature says

572369289_ScreenShot2021-12-09at11_01_17AM.png.7314029f76b03ded859e0d36f8d3c7de.png

https://www.jpinstruments.com/wp-content/uploads/2012/08/SLTACH_INSTALL.pdf

Here is print 420810,  See any "Pin 9"?   No.  In fact the pins are not numbered and there is no Pin "9" marked on or inside the unit although the print is adequate for use with a magneto.  JPI Tech support is worthless: no idea about the pin or how to wire the tach to a Plasma.  JPI Sales also has no idea and says "This tach is obsolete and we are going to probably discontinue it" but they are still selling them with their faulty 1994 instructions.  I asked who manages the company.  Somebody named "Scott" but they won't tell his last name or email.  A little sleuthing reveals one Scott Waldmann.

It appears I can use a CD3014 IC chip and divide the 2 plasma pulses into 1 with some simple wiring.   https://www.eleccircuit.com/cd4013-dual-d-type-flip-flops-datasheet/

I suspect the tach will tolerate the Plasma +10V signal but I can step it down with a simple voltage divider if necessary.  Waiting for parts.

1101350432_ScreenShot2021-12-09at11_01_39AM.png.bcdd122b7f7660cbc5029a8eace7370b.png

The funny thing is that I used the tach with a Plasma I and got it to work somehow although it was a little squirrely.


-Kent
Cozy IV N13AM-750 hrs, Long-EZ-85 hrs and sold

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On 12/9/2021 at 11:18 AM, Kent Ashton said:

It appears I can use a CD3014 IC chip and divide the 2 plasma pulses into 1 with some simple wiring.   https://www.eleccircuit.com/cd4013-dual-d-type-flip-flops-datasheet/

Sorry,  I meant CD4013 chip.  The link is correct.  I will let you know if it works

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-Kent
Cozy IV N13AM-750 hrs, Long-EZ-85 hrs and sold

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Having been interested in homebuilts since the days of dial-up-internet and rec.aviation.homebuilt, I have acquired a list of bookmarks as long as my arm.  Literally.  I could hold my arm (leg actually) to the screen and the bookmarks would be longer.  Here are my bookmarks under "Canards".  A lot of them are probably obscure or dead but here ya go.

Changing the Cozy wing - Canard Community Forum
Cozybuilders
Nat Puffer's Cozy Newsletters
http://www.cozybuilders.org/Oshkosh_Presentations/2009_Schubert_Flow_Vis_Forum.pdf
http://cafefoundation.org/v2/pdf_tech/Drag.Reduction/AGP.NASA.NLF.Holmes.Varieze.pdf
S12-17A8-04
Some pictures from my new automatic foam cutting machine
cozygirrrls
Berkut AutoPlt Install
Matronics Email Lists :: Index
Free Flight Composites
EAA Chapter 1000 Home Page
ASO Experimentals
Proset Epoxy Home
JeffCo Products
Velocity cowling
csa Newsletter
Home - Fiberglass Warehouse
Thayercraft-High Pt (fiberglass)
Velocity Store
Cory Bird's Raw Epoxy Finishing Technique - Canard Aviation Forum
Van Hoof ideas= Cozy
Kitchen Vacuum Bagging
YouTube - Varieze Canard Wind tunnel test
Jeff Owen's cozy project
HI TECH CONFOR SEAT CUSHION FOAM, COMFORT, IMPACT SAFETY, FIRE RETARDENT
Fiberglass products-cstsales
Camarda tips
My BERKUT Project
Closed Cell Foam, Padding, Minicel, Polystyrene Foam, Styrofoam Sheet
Scroll down to see albums. / Long EZ (see: www.geocities.com/beasley1984)
two strokes
http://download.r-g.de/handbuch_edition_06_09.pdf
U.S.Composites
ACP Composites Inc.
Good Ez pics - cowls, etc
YouTube - Hard Landing, Long EZ, HB-YDB, Emmen
Seat Heater for Cars and Trucks from HeatedSeatKits.com
Dual mag replacement - VAF Forums
http://www.aeroelectric.com/articles/Adapting_IR_Alternators_to_Aircraft.pdf
Davenport pitch trim
lord mounts
Jim Springer's Cozy Project-nosewheel doors
Flying Backward
mounting wheel pants
TE Fences
Kirker - matte clearcoat
Advanced Composite Traders - fiberglass
Nology Ignition Coils for Motorcycles - Nology ProFire Ignition Coil for Motorcycles (Dual Outlet 0.6 Ohm)
crank seal replacement thread
DIY Plenum - VAF Forums
The Long EZ Build: Documents
My cylinder photos
Kent's Long-EZ project - cylinder rust
high amp push button sw
Nathan Mullins - Experimental Aircraft Builder's Log
Belleville washers .236 to .394
Nose gear collapse - Canard Aviation Forum
Canardians Public Group | Facebook
Rutan LongEz and VariEze Public Group | Facebook
Bullet Series Mini Linear Actuators
L16-S Miniature Linear Actuator | Actuonix
Epoxy Resins & Adhesives (Liquid, 2 Part) | Aeromarine Products
‎www.rst-engr.com/rst/products/plasticplaneantenna/plasticplaneantenna_files/2802%20Manual-s.pdf
Canopy Latch and Lock System (LongEZ)
NextCraft™ Berkut/EZ info
Raptor Air Works
Kent's prop balancer
Ed Sterba Propeller Company, Home Page
curedComposites.com
EZ around the world build
How To Repair or Make Stainless Brake/Shifting/Throttle Cables - YouTube
Cyl baffle at parting line mod
ALAGNOUX Cozy
Cozy MK IV Serial #1537: Chapter 01 Description and Introduction
‎www.polyguardproducts.com/wp-content/uploads/2015/07/XPS-Data.pdf
Horis - Kanardia
Flexible PlenumsVAF Forums
https://www.canardzone.com/forums/topic/33309-varieze-builderpilot-wanted/?do=findComment&comment=63092
Find canard owners
Velocity Kitplane with GM V-8 Engine Run - YouTube
PropDesign
Jensen Mk III load test
Canard_Structural_Tests
jet quickie crash
Mullan v. Quickie Aircraft Corp, 797 F.2d 845 | Casetext
prop failures-canard pusher
Brake Failure on Landing - YouTube
Rutan Docs - Google Drive
Kent's Propeller Thread - Wayback machine
Kent's piccolo tubes- CanardZone
Central States Association website
‎contrails.free.fr/temp/Inverse%20pressure%20gradient%20matching.pdf
The Long EZ Build: The Long EZ
N68TF wing stall crash
Ellison TBI diaphragm
Ellison follow-on (NVAERO)
EZ around the world
Induction Leak Test - YouTube
AeroCanopy
Ch 23 Engine Installation Archives | A Long Way Round the World
Modifying a Performance Prop - Canard Aviation Forum
A-Solution - Page 2 - Canard Aviation Forum
canard-aviators@canardzone.groups.io | Home
Fibreglass Woven Tape Unidirectional 850g/m2 75mm **On Sale**
Fish's Cozy MKIV - Welcome
Walsh Cozy pics
Fabricating a Light-Weight Cowling
CSA / Canard Owners and Builders Association
VAF cooling cyl tips
Bob Lee- Twin EZ
Yahoo Groups
Front Panel Express Front Panel Designer
Tape
LEP 2 filling, finishing
Long-ez blog
old ez.org
Charles' Cozy Project
Free Flight Composites
Kissick Cozy build
Chapter 9: Wheelpants
EI System for Dual-Mag Engine - Page 4 - VAF Forums
Cozy MK IV Serial #1537
Builders links - CZ
Ellison rebuild info
X-Jets: The Experimental Workshop
LEZ changes.xls - Google Drive
Where to find EZ answers
Kent's Perf. Prop mod
My First Prop
Rutan Database
Prop balancer
Foam post
Bob Bittner ideas
Canard pages archive (ex-Maddy)
The Electronic Canard Pusher
Ellison-The Grose Jet | JIM'S GARAGE
GroseJet valve list
Kent's Long-ez Lipps cooling pics
Cozy IV flying again
Cozy Aircraft Project #1037
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-Kent
Cozy IV N13AM-750 hrs, Long-EZ-85 hrs and sold

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And here are the ones under "Aviation".  There is probably something interesting there too  🙂

AeroelecIndex
CoaxStripDetails
Matronics Email Lists :: Index
Precision Engine-The Rest of The Story
Mickey's RV8 Site - Building an amazing aircraft
VansAirForce.net
T37B Tweet microSimulator
matronics archives
HI TECH CONFOR SEAT CUSHION FOAM, COMFORT, IMPACT SAFETY, FIRE RETARDENT
Courtesy Aircraft, Inc.: premier dealer of quality Warbird and civilian aircraft
The Bücker Pages
CafeFoundation
midget mustang
Vr3 tube kits-Bearhawk
InfinityAerospace
Futurlec.com.au - PCB Service
Trio Avionics - EZ Pilot
Motion Pro - Hydraulic Brake Bleeder
LED POSITION LIGHTS
Skybright LED pos lts
GS Air (lights)
http://www.tubeservice.com/
OnlineMetals.com - Small Quantities Specialist - Online Metal Cutting and Online Metal Ordering
A&W Fasteners - MS & NAS Fasteners and Specialty Screw Machine Products
Genuine Aircraft Hardware Co.
metalworking tool ideas
Welcome to Freeman Aviation
AEROSPACE Composite Products
E-Lite - FLATLITE EL Sample Kits
QUICK RELEASE AIRCRAFT FASTENERS | CAMLOC® DZUS® AIRLOC® MILSPEC® RACING 1/4 TURN FASTENER
O-200 Fadec conversion
The Butterfly LLC
Rotor Flight Dynamics
Wentworth Aircraft
White Industries
Bearhawkin!
Dan Checkoway's RV-7 Project
Rocketboy - alternator
Fiberglass Wheel Pants
AeroElectric Connection
eFunda: Engineering Formulas
Hanley airfoil program
TetrUSS: NASA Tetrahedral Unstructured Software System
B & C Specialty
Eric Newtons Bearhawk Site
MegaSquirt - Electronic Fuel Injection
F1 Rocket
RV-6 Main Page
Back Yard UL-SP Page.
Personal Cruiser-Corvair pwer
PocketFMS
Fiberglass, Carbon Fiber - Fibre Glast Developments Corp.
Custom Aircraft Parts
Molding a canopy. - Page 3
Painless Performance: Product Features
Aerosport Power
Aircraft Monitoring Forum
Matco
Aerocraft Parts & Avionics
X-Plane, by Austin Meyer
CAFE Foundation
Lee Bottom Home Page
O320H lifter story [dead link[
O320H lifter story at Wayback Machine
Cam Spalling -- Accident or Suicide?
Facet fuel pumps
Bates Engineering - Prop otimizer
GAMI
Prop carver-Culver
cozygirrls prop carver
‎www.cozybuilders.org/mail_list/topics97/prop_fab.txt
Making a Graphite-Kevlar Propeller
Hercules Propellers
aircraft-spruce.com
Newton Equipment Ltd - Manufacturer of Fuel Caps and Other Motorsport Products.
Valve Wizard
REA True Airspeed Calculator
Texas Parasol
Parsol plans
SKYACHT
Fly the Pond
Force EFI - BigStuff
Flying to Europe
Powered paraglider made in California
Rotor Flight Dynamics, Inc. - Home of the Dominator!
Electroline- cable ends
Zenith builder page- scratch builder
Cartesian Tube - precut tubing
www.cantonracingproducts.com - 22-595 - FORD/MOPAR 90 DEGREE ROTATING REMOTE FILTER ADAPTER
strip-foam building KR2
HKS AVIATION HKS700E
airboattrader.com/parts
silmid.com - proseal and sealants
REAL Lifetime Silicone Gaskets
Pudue Avn Library
B & C Specialty Products, Lightweight Aircraft Electrical Systems
Principles of 2-Stroke Jetting & Reading Spark Plugs
www.mechanicsupport.com-blog
In ear headset - a cheap project - VAF Forums
Wood Kayak Shop - Building One Ocean Kayaks
Aircraft Throttle Quadrant by Baxter Throttle Quadrants
Molds making thread
D&D Aircraft Supply
Aeroquip Hose, Aeroquip Fittings & More From Aeroquip.cc
http://racing.hosemachine.com/?p=hose_1&type=FBA0400
Hose buildup thread
HoseMachine.com
AN hardware article
plug wires for mags
VAF-Ford rockers for H2AD
Rubberite Cypress Sponge Products
Alternators
tools, jigs, fixtures, and other neat stuff - Page 3
Flexhone manual
Performance built Lycoming and Continental aircraft engines
Aircraft Cylinder Barrel Temperature Requirements
Take Off (BMW engine)
Combustion Technologies - Lycoming Piston Rings
Rotor Flight Dynamics, Inc. - Home of the Dominator!
Verner Motor, Czech Republic - Home page
Hexadyne Avn engine
Basic Ultralight Glider
DFCI Solutions, Inc. - DZUS ® is not affiliated with DFCI ®
Denso alternator conversion-rotor
Denso alternator conversion
Peterson Fluid Systems : Oil Filters
KEStrobes
http://www.tapecase.com/p.2672.646/stainless-steel-foil-tape.aspx
Air / Oil / Fuel Pressure Sensors  ::  Kavlico - Pressure Sensors, Position sensors, LVDT, RVDT, Force Sensors, Specialty Sensors & Transducers
flyefii.com Lycoming Fuel Injection and Ignition
Genuine Aircraft Hardware Co. pics and crossref
Belted Air Power - Belt driven Auto engines for airplanes.
Car Alternator for Lycoming O-360? - VAF Forums
Helicopter flight training device, Heli-Chair, helichair, heli-chair
Mil, ASTM specs
Bearing failure pics
Flickr: The Autogyros, Gyroplanes and Gyrocopters Pool
GM MAP sensor identification information 1 bar 2 bar 3 bar
John Steere's Metal Wing Building Instructions (Introduction)
STRATOMASTER Instrumentation MGL Avionics
Civil Aviation - Communications & Ear Protection, Inc.
The 12V Doctor's Alternator Book
VAF=Mahlon advice: break-in
How It's Made Gliders - YouTube
Historialliset lentokoneet virtuaalikuvina
KOVI Designer Upholstery Fabrics
Desiccants and drying
Alternator Conversion
http://www.aeroelectric.com/articles/Nipon-Denso_Alternator_Mod.pdf
Low oil pressure in Lycoming or Continental aircraft engine
rubber die forming
Timing Belts & Timing Belt Pulleys | Pfeifer Industries
cooling piccolo tubes
Aeroquip Pre-Made Brakelines - Aeroquip Off-Road Teflon Brake Lines- Straight- Straight Ends, -03
Vacuum Resin Infusion with Cores and Carbon Pultrusions
Blowing canopies (recumbent bikes)
blowing a canopy
Airfoil Tools
Airfoil Investigation Database - Welcome
carbon fiber tubing
Kevin Horton's RV-8 Project
ViVidia AbleScope VA-400 HD USB Borescope Endoscope with 180 Degree Articulating 8.5mm Diameter Probe and LED Lights - Oasis Scientific Inc.
regulation docket - work in hangars
Hercules Propellers
Jared Yates Bearhawk
Desser Leakguard tubes
Battery Voltage Monitors - Waterproof, accurate, robust & reliable | SparkBright
Props Inc. Experimental Wood Aircraft Propellers for Homebuilt, Kitbuilt, and Plans Built aircraft.
Navigator Ultra | Aviolights
USB Charger Ports
BasicMed
Tip: Cutting and Buffing Paint - VAF Forums
Prop balancer (hanging)
Sticking Exhaust Valve - Diagnosis and Fix! - VAF Forums
Custom Bubble Canopies
Canard Covers by Dorothy
https://www.lycoming.com/sites/default/files/O-320%20%2876%20Series%29%20Operator%20Manual%2060297-22.pdf
Scott Adams: "Coffee with Scott Adams"
flyefii.com
‎discount-aircraft-salvage.com
Skycraft Parts & Surplus, Inc.
Symscape CFD
turbojet engine site-AgentJayZ
Lyc engine build at 14+00
‎egaa.home.mindspring.com/valves.html
Signature Engines Continental and Lycoming Aircraft Engine Overhaul & Replacement - YouTube
Magneto Ignition Harness Conversion to 8.5mm Super Conductor Automotive Spark Wire - VAF Forums
Wicom HeadSets.com
Weep No More
Mechanical Basics: Quick Review of the Fundamental Concepts, by EPI Inc.
Lightspeed-aero.com
Delta Pop antennas
LAS Aerospace(england)
Break It In Right - AVweb Features Article
Dimpling tool
Superior Engine Build School - Glasair Aircraft Owners Association
Abandoned & Little-Known Airfields
Home | Hercules Propellers
ADSB Exchange
transponder antenna
Lycoming IO360 Overhaul - YouTube
cylinder head separation
‎www.pitmanair.com/dragonfly/DragonflyPricing2019.pdf
EFII Systems - FlyEFII
BD-5 photos
SierraFoot: El Dorado Hills, Waterford, and the X-15
Hercules Propellers
Bearhawk Forums
Sportfliegerclub Ebersbach an der Fils e.V. -> Mit Freunden fliegen :-)
As it Happened - Apollo 13 "Houston We've Had A Problem" - YouTube
Aircraft Registrations, N Number Lookup, Aircraft Database - AircraftOne.com
Airport Reversion Clauses | Aviation Pros
Federal Register :: Policy on the Non-Aeronautical Use of Airport Hangars
Pelican's Perch #18: Mixture Magic - AVweb
Kevin Horton's power spreadsheet
Locktite 290 for case leak
Aircraft magnetos, 500 hour, why its important! - YouTube
Registry w/N number
Facebook
Aircraft Query - Aviation Database - AviationDB
Cal Worthington F4s - YouTube
Standard Oil Analysis | Blackstone Laboratories
Facet fuel pump teardown
Ugolini headset
Cozy 1200 headset
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-Kent
Cozy IV N13AM-750 hrs, Long-EZ-85 hrs and sold

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Listening to this very interesting video on coronary calcium scoring.  (Below)  I was always pretty healthy.   A little overweight but felt good.   Then I had a heart attack (clot/blockage) at age 59 1/2, went on statins, had another one 13 years later.    So I KNOW I have arteriosclerosis and statins did not prevent my 2nd HA.    There is much new info saying that cholesterol and LDL are not your enemy.   It is carbs, sugar, and foods with a high glycemic index—all of which I used to eat freely.   But that’s not my point here.  
 

 This doctor says that a 10 minute CT scan of your heart can give you a coronary calcium score which is highly and reliably predictive of arteriosclerosis.  This is little help to me now but were I a younger man, I would take that test for sure because fighting with the FAA to get Special Issuances is a real PIA.    https://youtu.be/afW7ZNMfaec
 

I have found very interesting and, I hope, life-preserving info on two YouTube channels: “Low Carb Down Under” and “Eat Mostly Fat”.    PM me if you want to discuss.


-Kent
Cozy IV N13AM-750 hrs, Long-EZ-85 hrs and sold

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Another classic circling approach accident.  Learjet, night, bad wx, 3NM vis,  pilot tries to maintain visual with the runway, gets in too close, stalls the airplane.  The audio is striking.

http://www.kathrynsreport.com/2021/12/learjet-35a-n880z-fatal-accident.html

https://globe.adsbexchange.com/?icao=ac2014&lat=32.822&lon=-116.971&zoom=13.2&showTrace=2021-12-28


-Kent
Cozy IV N13AM-750 hrs, Long-EZ-85 hrs and sold

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Finishing up on my JPI tach + LIghtspeed Plasma problem discussed above  https://www.canardzone.com/forums/topic/18661-kents-long-ez-project/?do=findComment&comment=80731   After much head-scratching I discovered there was no tach output from one of the Plasmas.  After trying everything else I hooked the tach up to the other Plasma box and it was fine.  It might have been an improperly wired connector from the first plasma but this harness came from LIghtspeed and it is a little awkward to remove and check at this point  My chip idea (to convert 2pp/Rev to 1pp/Rev) worked on the bench but was not needed.  Neither was a voltage divider to reduce the 12V Plasma output to 5-6 V for the tach.   This makes sense because my tach worked with my older Plasma that also output 2pp/Rev at 12V.  I don't recall if I ordered it to that spec from JPI.

It was fun doing a little electronics work, though.  🙂

 

Edited by Kent Ashton

-Kent
Cozy IV N13AM-750 hrs, Long-EZ-85 hrs and sold

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Posted (edited)

A guy on FB asked about how long he can idle his engine before takeoff without overheating.  I have never encountered any long delays except leaving Oshkosh, where the engine starts cold, or arriving Sun-n-fun, where the engine is already hot and there is a slow-moving queue for parking.  I don't have a number but I think it's good to wire your airplane so you can shut off the engine and monitor the radio.  With an E-bus (Essential bus) you can shut off the power, turn on the E-bus turn off non-essential equipment and listen to the radio.  That's probably good for over an hour.  I had to use that once when I was denied entrance to the D.C. SFRA.  I had to land outside the SFRA and refile my flight plan.  I never figured out why but it was handy to be able to sit and monitor the radio.

We flew into Mannasas once--inside the SFRA--the train to Washington was just a short walk away.   Fun trip

Untitled.jpg

Edited by Kent Ashton

-Kent
Cozy IV N13AM-750 hrs, Long-EZ-85 hrs and sold

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Saw this nice drawing (H/T to RV-guy Dan Horton) for a simple circuit to check the condition of a backup battery.  I used something like this on my EZ and could periodically check the voltage in flight and before start.  The "voltage monitor" on the left side is from ebayattachment.jpg.35b130718aa70192498be938f8f8b90c.jpg


-Kent
Cozy IV N13AM-750 hrs, Long-EZ-85 hrs and sold

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Just reading this accident today: an apparent heart attack in flight.  http://www.kathrynsreport.com/2022/01/medical-event-piper-pa-28-181-n75191.html   Having had two of them (on the ground) I am more interested in preventing one of these in the air.

I was never a big sugar user--always stuck to the diet colas and stevia in my cereal-- but 6-8 dates in my oatmeal was pretty normal and we liked our oatmeal cookies.   Sweet tea was a regular.  However, I have been educated on high fructose sugar.  Americans used to eat 9 pounds of sugar a year.  Now they eat 80-100 pounds (estimates vary). 

In the hospital the other day, the waiting room drink machines were filled with 20 oz full-sugar drinks.  A 20 oz Pepsi has 9.2 HEAPING teaspoons of high fructose sugar (69g) (pic), a Mountain Dew 10.25.  It's crazy when you look at the fat patients waddling in and yep, I am one.

Maybe you never thought much about high fructose sugar but this doctor has some excellent videos on the problem.  Here is one  https://robertlustig.com/fructose2/

As I understand it, sugar doesn't block arteries but it leads to diabetes which damages the arteries and leads to coronary plaques.  Check dates on the Glycemic Index.  Yikes!

 

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-Kent
Cozy IV N13AM-750 hrs, Long-EZ-85 hrs and sold

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Interesting photo of a troublesome VDO oil pressure sender showing a wear spot where the wiper rides.  (H/T Richard Connell at VAF).  One commenter said VDO oil pressure senders generally fail high.   I just experienced that with 750 hours on one of them and have a new one to install.  Will cut the old one up when I get the new one in.

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-Kent
Cozy IV N13AM-750 hrs, Long-EZ-85 hrs and sold

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I have an electric pitch trim (a 3.7V screwdriver motor) operated through a PWM and a Carling toggle switch mounted  just behind the throttles.  Here is a cheaper idea which could work just as well using two Grayhill DPST pushbuttons ($4,00 each) and a $5.00 ebay PWM (pulse width modulator).  The wiring would be simple.  Yeah, I would like to have a two $200 hat switches on the stick like the big boys but as little as I use the trim, a couple of pushbuttons would suit me fine and be simpler than what I have now.  The only downside I can see is that if you push both buttons at once, you would blow a fuse but make some little  guards around them.

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-Kent
Cozy IV N13AM-750 hrs, Long-EZ-85 hrs and sold

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