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Search: Posts Made By: keitht
Forum: Glass Cockpit 09-30-2022, 11:49 AM
Replies: 13
Views: 1,211
Posted By keitht
Informed decisions

Selecting, installing,troubleshooting, programing and maintaining a modern suite of all glass electronic instruments is one of the more complicated and expensive tasks for the average homebuilder...
Forum: Glass Cockpit 09-26-2022, 11:33 PM
Replies: 13
Views: 1,211
Posted By keitht
Its all about the mission

The most important step is to figure out the mission - how are you going to use the airplane and what do you want it to do. VFR daytime only for local fun flying through to nightime IFR cross...
Forum: RV-7/7A 09-15-2022, 01:11 PM
Replies: 11
Views: 1,010
Posted By keitht
7 to 7A

Some years ago I bought a project that was at close to quickbuild stage with a slider canopy and 7A gear and did all the research to convert from slider to tip up and 7A to 7 (going the other way to...
Forum: RV General Discussion/News 08-24-2022, 03:07 PM
Replies: 30
Views: 2,035
Posted By keitht
Even more off topic

Bob,

I cant imagine you running out of things to say!

KT
Forum: Northwest 08-23-2022, 12:05 PM
Replies: 22
Views: 3,046
Posted By keitht
And at least one hungry bear every square mile...

And at least one hungry bear every square mile looking for a meal. If you havent flown in the north cascade mountains and in the lower trench area of BC this year might be a good warm up for next...
Forum: Northwest 08-23-2022, 11:55 AM
Replies: 22
Views: 3,046
Posted By keitht
And at least one hungry bear every square mile...

And at least one hungry bear every square mile looking for a meal. If you havent flown in the north cascade mountains and in the lower trench area of BC this year might be a good warm up for next...
Forum: Glass Cockpit 08-22-2022, 01:38 PM
Replies: 19
Views: 2,277
Posted By keitht
The point I was trying to make is that one of...

The point I was trying to make is that one of either LPV GPS or VOR/ILS as the sole navigation and approach equipment is unacceptable from a failure rate and consequences point of view. Having a...
Forum: Glass Cockpit 08-18-2022, 10:17 PM
Replies: 19
Views: 2,277
Posted By keitht
The point I was trying to make is that one of...

The point I was trying to make is that one of either LPV GPS or VOR/ILS as the sole navigation and approach equipment is unacceptable from a failure rate and consequences point of view. Having a...
Forum: Glass Cockpit 08-18-2022, 09:42 PM
Replies: 19
Views: 2,277
Posted By keitht
I completely agree with your first point. Old...

I completely agree with your first point. Old School VOR and ILS IFR navigation requires two independent VOR/ILS receivers to ensure availability since the demonstrated failure rate and consequences...
Forum: Glass Cockpit 08-18-2022, 02:09 PM
Replies: 19
Views: 2,277
Posted By keitht
Exactly - an excellent design that was “state of...

Exactly - an excellent design that was “state of the art” “cutting edge” when it was designed 30 years ago by Apollo when steam gages were the norm and early glass GA displays were coming available...
Forum: Glass Cockpit 08-18-2022, 01:00 PM
Replies: 19
Views: 2,277
Posted By keitht
The spec for the TX56/57 shows only RS 232 bus...

The spec for the TX56/57 shows only RS 232 bus interface- no ARINC 429 or CAN bus so interfacing to a HDX may be a problem depending on the other interfaces competing for the five available RS232...
Forum: Glass Cockpit 08-14-2022, 09:51 AM
Replies: 19
Views: 2,277
Posted By keitht
Yep SA does both FlyQ and the Dynon charts - I...

Yep SA does both FlyQ and the Dynon charts - I have both a lifetime subscription to FlyQ for a Ipad Mini and the annual subscription for the HDX since the FlyQ package can’t be loaded on the HDX. I...
Forum: Glass Cockpit 08-14-2022, 06:51 AM
Replies: 19
Views: 2,277
Posted By keitht
From the installation manual: 5.6.11 RS232...

From the installation manual:
5.6.11 RS232 Input/Output
The RS232 input allows certain third-party multi-function displays to preload the standby and active frequencies and to monitor the Nav/Com...
Forum: Glass Cockpit 08-13-2022, 11:29 AM
Replies: 19
Views: 2,277
Posted By keitht
The alternative to the SL-30 is the GNC -255...

The alternative to the SL-30 is the GNC -255 which is more expensive and well supported and works well with the HDX. I wanted ILS/VOR capability and LPV capability but had reservations about having...
Forum: Glass Cockpit 08-11-2022, 03:44 AM
Replies: 19
Views: 1,225
Posted By keitht
I dont think I implied that the cost of fuel was...

I dont think I implied that the cost of fuel was a variable in the determination of Carson speed. However as costs go up we all look to trim our sails to get the most performance out of the dollars...
Forum: Glass Cockpit 08-10-2022, 09:09 PM
Replies: 19
Views: 1,225
Posted By keitht
[QUOTE=BobTurner;1626109]Approaching a stall is...

[QUOTE=BobTurner;1626109]Approaching a stall is all it is designed to do. You’re correct, it won’t indicate max L/D.
PS. ‘Carson speed’ is definitely not max range speed.[/
Agreed - but it is the...
Forum: Glass Cockpit 08-10-2022, 03:18 PM
Replies: 19
Views: 1,225
Posted By keitht
On speed

My impression of the Dynon AOA is that it is pretty good as a progressive stall warning indicator but doesnt have AOA characteristics. OnSpeed condition for approach or maneuvering should occur at...
Forum: Glass Cockpit 08-10-2022, 01:40 PM
Replies: 19
Views: 1,225
Posted By keitht
Dynon AOA

Did the Dynon AOA procedure and evaluated the resultant AOA indications and tone - not impressed. Redid the calibration and did further evaluation at different weights and CG. Not only not impressed...
Forum: RV General Discussion/News 06-17-2022, 11:27 PM
Replies: 40
Views: 7,034
Posted By keitht
I have dual HDX displays. According to Dynon tech...

I have dual HDX displays. According to Dynon tech support and the Dynon web pages the HDX will only accept Seattle Avionics map software, so I have to live with that. I also use an Ipad mini running...
Forum: RV Photo/Video URLs 06-06-2022, 10:00 AM
Replies: 8
Views: 1,204
Posted By keitht
+1 on that. Best (and safest) way to get the wife...

+1 on that. Best (and safest) way to get the wife checked out in your RV is to find an experienced instructor (with lots of RV time) to do the checkout and signoff (if the insurance requires it)....
Forum: Glass Cockpit 06-04-2022, 03:36 PM
Replies: 5
Views: 1,288
Posted By keitht
I think it depends on what you want (expect) from...

I think it depends on what you want (expect) from an AOA system. For me the display in not very usable - small, down on the instrument panel and not instantly readable. The audio is usable but not...
Forum: Glass Cockpit 06-03-2022, 04:22 PM
Replies: 5
Views: 1,288
Posted By keitht
On Speed AOA

Hi Bill,
I am building an On Speed AOA module and will be installing it soon when I do my Condition Inspection. I did the calibration procedure for the HDX system and was disappointed with the...
Forum: RV-7/7A 06-03-2022, 12:28 PM
Replies: 21
Views: 1,969
Posted By keitht
CHTs

If the blue line is power then looking at the first two spikes - one may be the mag check and the second prop cycling prior to take-off if you have a CS prop. The CHTs are all at about 400 before...
Forum: RV-7/7A 06-03-2022, 10:32 AM
Replies: 21
Views: 1,969
Posted By keitht
CHT overtemp

The chart you posted is really hard to see the individual data but it does appear to be a very serious CHT overtemp if the sensors are reporting correctly. You might want to give Mike Busch at Savvy...
Forum: RV-12/RV-12iS 05-27-2022, 11:46 AM
Replies: 26
Views: 6,906
Posted By keitht
Rotax regulators

Two models of regulator are used on Rotax 912xxx engines. The Ducati type used on the non fuel injected engines and a model manufactured by a Swiss company. I know something about the topology of the...
Forum: Electrical Systems 05-11-2022, 03:56 PM
Replies: 69
Views: 9,448
Posted By keitht
Even so - 320 grams spinning at 3000 RPM that...

Even so - 320 grams spinning at 3000 RPM that gets loose can be quite spectacular.

KT
Forum: Electrical Systems 05-11-2022, 01:57 PM
Replies: 69
Views: 9,448
Posted By keitht
A couple of questions - 1. do you plan on doing...

A couple of questions -
1. do you plan on doing any catastrophic failure testing?
2. Do you have a plan for endurance testing of a number of units for a representative lifetime - say 1000 hrs of...
Forum: Electrical Systems 05-11-2022, 01:20 PM
Replies: 69
Views: 9,448
Posted By keitht
Walt, The point about the comparison between an...

Walt,
The point about the comparison between an impulse magneto and a permanent magnet alternator is that there is a lot of energy to dissipate in both if the rotating parts suddenly stop rotating -...
Forum: Electrical Systems 05-11-2022, 11:14 AM
Replies: 69
Views: 9,448
Posted By keitht
Gear Driven Alt

Watched the videos - great job. I have the B&C 30 amp gear driven alt as a backup so can make a comparison based on what appears in the videos. Got to thinking about the decision making process I...
Forum: Electrical Systems 05-09-2022, 10:20 PM
Replies: 11
Views: 1,155
Posted By keitht
Grounding

So the problem can be broken down into three groups.
1. Power returns that are delivering essentially DC current used to power a component
2. Data busses and signal wire returns that are balanced or...
Forum: Electrical Systems 05-09-2022, 01:33 PM
Replies: 24
Views: 2,639
Posted By keitht
Alternators

The B&C alternators probably are Denso based automotive versions with external regulators. The big advantage is that B&C have done the work to design, build test and qualify (PMA) their regulator. If...
Forum: Safety 05-02-2022, 04:00 PM
Replies: 3
Views: 508
Posted By keitht
How to land a tailwheel aircraft

Watch the youtube video of the shuttleworth trust flying collection. Tail 2 inches off the ground or a full stall three pointer - no tail high, high speed wheely (unless it is a DC3). Shuttleworth...
Forum: Electrical Systems 04-30-2022, 08:42 PM
Replies: 8
Views: 866
Posted By keitht
I would be very surprised if it was lighter,...

I would be very surprised if it was lighter, almost certainly larger diameter and you will need to protect all wires pulled through it from shorting out to it. Twisted pairs and shielded two or three...
Forum: Electrical Systems 04-24-2022, 07:41 PM
Replies: 13
Views: 1,263
Posted By keitht
Manual versus automatic switching

I am sure there are a number of configuration that would allow transfer of fuel management from one ECU to the other - from simple manual switching to more complex automatic control. Simple control...
Forum: Electrical Systems 04-24-2022, 09:28 AM
Replies: 13
Views: 1,263
Posted By keitht
Scott, The key to good systems engineering is to...

Scott,
The key to good systems engineering is to really understand the mission, know the level of human intervention needed to change the configuration in the event of a component failure, the level...
Forum: RV General Discussion/News 04-22-2022, 10:31 AM
Replies: 35
Views: 3,522
Posted By keitht
The proximity and connections to the “high...

The proximity and connections to the “high current” part of the antenna is only important for high power transmitting antenna. Not an issue for receiving only antenna. VSWR and beam pattern across...
Forum: RV General Discussion/News 04-20-2022, 09:22 PM
Replies: 40
Views: 7,034
Posted By keitht
I bought a lifetime subscription to FlyQ for use...

I bought a lifetime subscription to FlyQ for use on an Ipad mini and have a subscription to FlyQ for Dynon HDX in my Rv-7A. The Ipad mini still hangs up, goes into strange modes and is generally...
Forum: Electrical Systems 04-20-2022, 11:37 AM
Replies: 12
Views: 704
Posted By keitht
The protection components you insert into your...

The protection components you insert into your electrical power generation and distribution are there to prevent flames and smoke resulting from a fault condition in the circuit. Typically those...
Forum: Electrical Systems 04-19-2022, 11:28 PM
Replies: 12
Views: 704
Posted By keitht
Wire sizing

I think the problem is trying to figure out the physical interconnections and sizing from an electrical symbolic wiring diagram that just shows the point to point connections while trying to ensure...
Forum: Electrical Systems 04-16-2022, 02:25 PM
Replies: 7
Views: 700
Posted By keitht
The CB should be sized to protect the motor and...

The CB should be sized to protect the motor and the wiring. The wiring should be sized for voltage drop at the nominal (non charging) output voltage at the max flap lowering airspeed (motor load)...
Forum: Electrical Systems 04-15-2022, 10:13 AM
Replies: 5
Views: 1,224
Posted By keitht
The suppression diode need to be able to dump the...

The suppression diode need to be able to dump the energy stored in the coil so the characteristics of the solenoid and the suppression diode need to be matched.
The master solenoid typically has...
Forum: Electrical Systems 04-14-2022, 10:38 AM
Replies: 9
Views: 1,867
Posted By keitht
Yep - sprinkle with fairy dust and smoke...

Yep - sprinkle with fairy dust and smoke retardant and call it done. I found putting “production break” connectors between the panel wiring and the fuselage wiring made it easier to do a two stage...
Forum: RV General Discussion/News 04-12-2022, 09:03 PM
Replies: 35
Views: 3,522
Posted By keitht
Bob, I am trying to keep it simple but your...

Bob,
I am trying to keep it simple but your understanding of the way the ILS works is either not correct or I am missing something. So lets get to the engineering level for an in depth...
Forum: RV General Discussion/News 04-12-2022, 06:33 PM
Replies: 35
Views: 3,522
Posted By keitht
Its all that some of us know how to do!!

Its all that some of us know how to do!!
Forum: RV General Discussion/News 04-12-2022, 06:28 PM
Replies: 35
Views: 3,522
Posted By keitht
Reply to Bob Turner

Bob, i didn’t make my point very clearly. My comment about signal strength and boresight errors falls into two areas. VSWR - where low VSWR across the band is important and the direction of maximum...
Forum: RV General Discussion/News 04-12-2022, 05:13 PM
Replies: 35
Views: 3,522
Posted By keitht
Just so we are on the same page about ILS systems...

Just so we are on the same page about ILS systems and aircraft antenna lets just confirm some fundamentals before getting into the details.
The airport localizer transmits in the VHF band with a...
Forum: RV General Discussion/News 04-12-2022, 01:34 PM
Replies: 35
Views: 3,522
Posted By keitht
The archer antenna is perfectly good enough to...

The archer antenna is perfectly good enough to provide reliable VOR signal and guidance for en - route situations but does it provide adequate ILS localizer and glideslope reception? The Archer...
Forum: RV-7/7A 04-12-2022, 11:24 AM
Replies: 30
Views: 11,148
Posted By keitht
I installed a IO-360B1B from Aerosport power in...

I installed a IO-360B1B from Aerosport power in my RV-7A with a Hartzell CS prop. I modified the snorkel and airbox to make the snorkel removable and used the top part of a wet suit bootee to make...
Forum: RV-7/7A 04-11-2022, 08:07 PM
Replies: 1
Views: 435
Posted By keitht
Give Vans a call with the kit number, original...

Give Vans a call with the kit number, original purchaser and they should be able to tell you the kit ship dates. You will need to coodinate all that information with Vans (including your bill of sale...
Forum: Safety 03-29-2022, 07:16 AM
Replies: 26
Views: 3,831
Posted By keitht
Total Energy

Vac,
Thinking about the calibration problem and getting a reliable low noise signal for Beta dot I wondered if any thought had been given to using a probe from the top of the vertical stabilizer to...
Forum: Safety 03-28-2022, 11:17 AM
Replies: 20
Views: 2,055
Posted By keitht
Shades of Grey (and other colors for the colorblind)

Some of the preceding discussion reminds me of a well known talking head aviation expert here in the Pacific Northwest that arrived at my local airport in a Mooney 231 on a cold wet winters day,...
Forum: Safety 03-25-2022, 11:32 AM
Replies: 20
Views: 4,467
Posted By keitht
Evolution regulator

Hi Bill,
Did you make any selection to put the regulator into a standard 20 pules per minute or just leave it in auto detect mode. The data sheet notes that vibration from a vehicle can disrupt the...
Forum: RV-7/7A 02-15-2022, 11:05 AM
Replies: 10
Views: 1,273
Posted By keitht
The preformed part from the vans store are the...

The preformed part from the vans store are the parts that needs to be trimmed and drilled. Should be left and right handed parts.

KT
Forum: RV-7/7A 02-15-2022, 06:33 AM
Replies: 10
Views: 1,273
Posted By keitht
Nose gear Bracket

Look at the instructions for finishing the Vans supplied brackets. The slot has to be enlarged and shaped to fit the front wheel assembly. The drawing shows how it fits - the build instructions tell...
Forum: Interiors 01-27-2022, 12:49 PM
Replies: 37
Views: 11,415
Posted By keitht
Kydex

Yes, I used 0.028 kydex for the side panels. I did add a strip of 0.032 T3 across the top and bottom of the pockets to provide more stiffness across the pocket area. I replaced the furniture...
Forum: RV-7/7A 01-25-2022, 12:06 AM
Replies: 28
Views: 3,644
Posted By keitht
Things to do in preparation

I spent almost a year looking for a part built kit to buy. While waiting I built a 6 ft roll around bench with 3 drawers for tools on each side, an 8ft long bench for wing assembly, purchased a lot...
Forum: Interiors 01-11-2022, 08:32 PM
Replies: 37
Views: 11,415
Posted By keitht
Lemke Interior

I have make a couple of flights of 2 hours plus with my RV-7A Lemke Interior. Seats are really comfortable and the pump up lumbar support works well. I have made some changes to the interior side...
Forum: RV-7/7A 01-11-2022, 08:04 PM
Replies: 6
Views: 1,222
Posted By keitht
Oil Door

Larry,
I ran into the same issue. My solution was to make a template of the cutout in the cowling before making the cut and leaving sufficient room in each lower corner to put skybolt fasteners while...
Forum: RV-7/7A 12-15-2021, 05:12 PM
Replies: 19
Views: 2,864
Posted By keitht
Carl, Thanks for the reply. I was thinking I...

Carl,
Thanks for the reply. I was thinking I should have gone for under the tailplane location - existing wiring may be long enough, but not a problem to splice some in. Almost completed the phase...
Forum: RV-7/7A 12-15-2021, 11:02 AM
Replies: 19
Views: 2,864
Posted By keitht
Location of OAT sensors

Any suggestion on locations for Outside Air Temp probes. Put mine on the bottom skin off to the left side back about mid fuselage but am getting quite an error due to exhaust and cooling air flowing...
Forum: RV-7/7A 12-15-2021, 10:52 AM
Replies: 8
Views: 1,855
Posted By keitht
Balancing the elevator

The electric trim adds some weight to the elevator due to the trim motor so adding provision for mass balance lead sheet plates on the inside of the elevator horn will make the balancing task much...
Forum: RV General Discussion/News 12-12-2021, 01:02 PM
Replies: 29
Views: 4,627
Posted By keitht
Thread drift

There seems to be a number of threads recently that get off on a kick about extreme corner conditions or situations that are beyond reasonable or prudent. This is one of them. Who in their right mind...
Forum: RV-7/7A 12-06-2021, 09:04 PM
Replies: 36
Views: 5,439
Posted By keitht
+1 on location of the autopilot control panel....

+1 on location of the autopilot control panel. What are you doing for a second radio? (assume the gps navigator will have a radio built in) What controls will you have on the control stick? Are you...
Forum: RV Building Tips/Techniques 12-02-2021, 06:28 PM
Replies: 23
Views: 4,310
Posted By keitht
Had the same DAR do my inspection in July this...

Had the same DAR do my inspection in July this year - same very enjoyable experience. My builder log had lots of pictures ( a few with me in them at various critical stages of the build). I had...
Showing results 1 to 64 of 226

 
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