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Search: Posts Made By: chepburn
Forum: Safety 01-10-2022, 01:07 PM
Replies: 15
Views: 3,025
Posted By chepburn
Great work Mike, Did you happen to time sync...

Great work Mike,

Did you happen to time sync your video with your instrumentation? It would be interesting see a plot of AoA at a given tuft time point. I would like to correlate the tuft behavior...
Forum: RV-15 11-14-2021, 12:12 PM
Replies: 242
Views: 47,278
Posted By chepburn
I have it on good authority the latest iteration...

I have it on good authority the latest iteration of the 15 has morphed into this:
Forum: RV General Discussion/News 10-22-2021, 07:36 AM
Replies: 44
Views: 4,527
Posted By chepburn
Hi, I live in Ottawa, Ontario, and spent 4...

Hi,

I live in Ottawa, Ontario, and spent 4 winters building my 8 in a -sort-of- insulated double car garage.

I heated the space with this: (the larger...
Forum: RV General Discussion/News 10-08-2021, 08:40 AM
Replies: 27
Views: 4,177
Posted By chepburn
Kevin, Not the end of an era, but the start of...

Kevin,

Not the end of an era, but the start of another!

RVators in the Ottawa area have missed you since your move to Moses Lake, although I expect we will see you in Oshkosh now that you will live...
Forum: Flight Testing 05-14-2021, 05:55 AM
Replies: 24
Views: 5,771
Posted By chepburn
You're not incorrect. That analysis does not...

You're not incorrect. That analysis does not take separation into account so the actual lift generated by the flap at 40 degrees will be reduced. I also took some liberties in modelling the edges...
Forum: Flight Testing 05-13-2021, 07:24 AM
Replies: 24
Views: 5,771
Posted By chepburn
A quick analysis

Hi All,

Some of you may have seen an earlier post on a tool I have been working on to allow someone to do a quick what-if analysis on an aircraft.

So, I generated a model shown in image one. I...
Forum: Flight Testing 05-10-2021, 10:18 AM
Replies: 24
Views: 5,771
Posted By chepburn
First: Do NOT try that. Second: Its not the same...

First:
Do NOT try that.
Second:
Its not the same aircraft, (not even close really) but I did an accident investigation of a DHC-6 (Twin Otter) where the flap rod connection broke on final approach....
Forum: RV Building Tips/Techniques 12-30-2020, 05:37 AM
Replies: 12
Views: 3,043
Posted By chepburn
For those of us in the Great White North, Clear...

For those of us in the Great White North, Clear Hockey Tape !

https://www.canadiantire.ca/en/pdp/renfrew-clear-hockey-tape-7-pk-0830178p.html?_br_psugg_q=hockey+tape

This stuff is thick and...
Forum: RV-8/8A 11-05-2020, 06:29 AM
Replies: 771
Views: 913,692
Posted By chepburn
Wow...... every now and then I see a build log...

Wow...... every now and then I see a build log that is just inspiring.... to the point of OMG, that is how it is supposed to look! Makes we want to tear out what I have and rebuild to your example...
Forum: Safety 10-15-2020, 09:36 AM
Replies: 45
Views: 10,244
Posted By chepburn
Lap Belt type for those who had failures

Hi,
What lap belt was in use for those who had back seat failures? The point of failure on the picture is close (if not at) the pass through for the lap belt. If the lap belt was a ratchet type...
Forum: RV-8/8A 07-13-2020, 10:52 AM
Replies: 3
Views: 1,650
Posted By chepburn
part 2...

Part Two (of Two thankfully)

Now I’m thinking that I have a set of moulds that I’m only going to use once? Rv8bldr (Mark R)…. a former colleague at CAE and fellow RV8 builder suggested that maybe...
Forum: RV-8/8A 07-13-2020, 10:51 AM
Replies: 3
Views: 1,650
Posted By chepburn
Some new side pockets for C-GOGO

Plans often don’t go as planned...

I set May 1 2020 as my retirement date from CAE over two years ago, (actually a bit longer…because Step 1 was finding a fantastic co-owner for C-GOGO so I could...
Forum: RV General Discussion/News 02-17-2020, 02:38 PM
Replies: 24
Views: 3,482
Posted By chepburn
Some more info that I found useful

Hi,

I had some issues figuring out what was 'just right' for the flare itself.... I asked on this forum and got some great advice...

Here's the...
Forum: Traditional Aircraft Engines 05-20-2019, 06:03 AM
Replies: 8
Views: 1,856
Posted By chepburn
Thanks for the input. So far the vote is...

Thanks for the input. So far the vote is electrical. I'd like to hear from some of the engine gurus on this site before we commit to another test flight.

From feedback here and knowledgeable...
Forum: Traditional Aircraft Engines 05-19-2019, 08:09 AM
Replies: 8
Views: 1,856
Posted By chepburn
Exclamation Need Help diagnosing Oil Pressure Issue

Hello,

This is a long post..... but PLEASE read it, and if you have some ideas on what might be happening ...we would appreciate the feedback

We have been trying to diagnose an oil pressure issue...
Forum: RV-8/8A 05-15-2019, 05:10 AM
Replies: 3
Views: 978
Posted By chepburn
Hi Don, Check out this thread if you haven't...

Hi Don,

Check out this thread if you haven't already....

http://www.vansairforce.com/community/showthread.php?t=12787&highlight=exhaust+floor+vibration
Forum: RV General Discussion/News 04-12-2019, 05:53 AM
Replies: 20
Views: 3,552
Posted By chepburn
isolate rear grip

One mode to consider in your design...

If you have flap control switches on front and rear grips, make sure that you include an isolation switch to disable the rear stick.

If you use up-off-(down)...
Forum: RV General Discussion/News 01-06-2019, 06:57 AM
Replies: 8
Views: 2,092
Posted By chepburn
Check your exhaust hangars as well. They can...

Check your exhaust hangars as well.

They can come loose and that will create the vibration you are describing.

(It happened to me... your description matched my aircraft's symptoms)
Forum: RV-8/8A 12-31-2018, 02:20 PM
Replies: 14
Views: 4,909
Posted By chepburn
Fantastic Don ! Congratulations ! Hope to see...

Fantastic Don !

Congratulations ! Hope to see you up at CYRP when you have flown off your phase 1

Chris
Forum: RV-8/8A 11-22-2018, 05:48 AM
Replies: 904
Views: 1,222,513
Posted By chepburn
Nice RV8 Don!

Plane looks fantastic! Looking forward to that first flight video... I'll have to stop by for a peek next time I'm down at CYOO.
Forum: Safety 11-17-2018, 07:06 AM
Replies: 171
Views: 27,405
Posted By chepburn
Weather windows.....

Hi All,
I have flown in to the show only twice in the last seven years, so take that into consideration in my comments....
It's hard to put my thoughts into words, so take this as a debrief of what...
Forum: RV General Discussion/News 08-06-2018, 09:34 AM
Replies: 4
Views: 1,068
Posted By chepburn
Yessir ! Thanks to Jerry and Rich and all of the...

Yessir !

Thanks to Jerry and Rich and all of the hard working volunteers who made the stay fantastic at HBC !!
Forum: RV Ongoing Maintenance Issues 08-05-2018, 06:49 AM
Replies: 2
Views: 985
Posted By chepburn
Thanks for the reference. I just checked that...

Thanks for the reference. I just checked that sump drawing and it shows the thick oring part 77569. The orings on my intake pipes are only 1/8 in diameter, so the 77569 will not fit.

With...
Forum: RV Ongoing Maintenance Issues 08-04-2018, 01:15 PM
Replies: 2
Views: 985
Posted By chepburn
Intake Pipe ORing Part #?

Hi All,

Been scouring through my parts manuals, A/C Spruce etc trying to find the part number for my intake pipe oring on an IO360A1B. The induction tubes push right into the intake sump and are...
Forum: RV General Discussion/News 07-07-2018, 02:56 PM
Replies: 4
Views: 1,777
Posted By chepburn
Oshkosh NOTAM Go Around Procedure?

Hi All,

I've read the NOTAM....A few times.

Is the go around procedure to all runways to try to inject yourself back into the pattern? The runway depictions all show 'DO NOT FLY' on the...
Forum: RV General Discussion/News 05-30-2018, 05:45 AM
Replies: 11
Views: 3,553
Posted By chepburn
I have a different AHRS, so this may not apply...

I have a different AHRS, so this may not apply to the Dynon, but mine is mounted on a rail directly under the pilots seat just aft of the spar.

This is an optimal location for an AHRS to be as...
Forum: RV Building Tips/Techniques 01-21-2018, 02:05 PM
Replies: 62
Views: 15,815
Posted By chepburn
Sorry Ron.... Its not my intent to minimize how...

Sorry Ron....

Its not my intent to minimize how awful it is. I -think- I was trying to vocalize that we don't know what the root cause is.

I wish we did so we could prevent it from happening to...
Forum: RV Building Tips/Techniques 01-21-2018, 11:19 AM
Replies: 62
Views: 15,815
Posted By chepburn
Interesting... I have never heard my canopy...

Interesting... I have never heard my canopy click in frigid temperatures..I am assuming that is because the hangar is unheated, so things happen at a much slower rate. (or I'm not in the hangar...
Forum: RV Building Tips/Techniques 01-10-2018, 04:55 PM
Replies: 62
Views: 15,815
Posted By chepburn
I have fixed the results in the first post. It...

I have fixed the results in the first post. It changes things.

A LOT.

Thanks for the correction Alex.
Forum: RV Building Tips/Techniques 01-08-2018, 04:35 PM
Replies: 62
Views: 15,815
Posted By chepburn
A lot of insightful comments so far..now...

I'm glad (although that really isn't the correct word here) there has been a lot of comments on possible causes for cracking of a canopy. I'm sure if we perused some soaring web boards, we would...
Forum: RV Building Tips/Techniques 01-07-2018, 03:47 PM
Replies: 62
Views: 15,815
Posted By chepburn
Pondering if thermal expansion can break a canopy

There has been some discussion lately on cracked canopies and some speculation on the cold weather being the culprit.

I thought I would start a new thread based on Danny Kings...
Forum: RV General Discussion/News 01-06-2018, 08:23 AM
Replies: 21
Views: 8,122
Posted By chepburn
We don't have much choice here if we wish to stay...

We don't have much choice here if we wish to stay airborne in winter...-25C here this morning and a forecast today like this:

TAF CYOW 061138Z 0612/0712 28015G25KT P6SM BKN100 TEMPO 0612/0616 5SM...
Forum: RV General Discussion/News 01-05-2018, 08:27 AM
Replies: 11
Views: 2,664
Posted By chepburn
Just another datapoint for you for the 149NL on...

Just another datapoint for you for the 149NL on an IO360 with a 7 year old PC625 battery.

Winter temps here are closer to what you have (-22C -6F) today. Started last week at -5F and the NL can...
Forum: Job Board 11-30-2017, 05:41 PM
Replies: 1
Views: 1,255
Posted By chepburn
Post graduate job seeker

Hi All,

This is a post for my VAF son. See : http://www.vansairforce.com/community/showthread.php?t=94627 This is a shout out to my VAF family for leads for a self starter who has just completed...
Forum: RV-8/8A 11-29-2017, 04:19 PM
Replies: 6
Views: 1,287
Posted By chepburn
I placed two 30 lb sand bags in the aft...

I placed two 30 lb sand bags in the aft compartment. So ten lbs over.

The rest of the weight was added incrementally in 30 lb bags to the rear seat. I put the sand bags inside of pillow cases to...
Forum: RV General Discussion/News 10-21-2017, 10:18 PM
Replies: 3
Views: 1,409
Posted By chepburn
Don't know if this will help, but check this...

Don't know if this will help, but check this thread out...

http://www.vansairforce.com/community/showthread.php?t=56174

I had issues trying to figure out how to mount the bracket and cable.... ...
Forum: RV Ongoing Maintenance Issues 10-21-2017, 07:25 AM
Replies: 5
Views: 3,370
Posted By chepburn
I wish I could have found a shop that would do...

I wish I could have found a shop that would do IRAN/reseal....

I had my Hartzell prop overhauled at 12 years... but, it only had 800 hours on it...no nicks, no leaking, pretty much in new condition...
Forum: RV General Discussion/News 09-14-2017, 06:20 AM
Replies: 33
Views: 10,428
Posted By chepburn
I did transition training with Mike in 2011, and...

I did transition training with Mike in 2011, and his pattern procedure is still the one I -generally- use to approach and land my CS RV8.

However, as other posters have mentioned, speeds and MAP...
Forum: RV General Discussion/News 04-04-2017, 06:00 AM
Replies: 12
Views: 5,408
Posted By chepburn
Is it just me or...

Yes, its a cool -looking- feature.

However, other than giving you situational awareness of whether an airport is close to your ring while everything is ticking along without problems , shouldn't...
Forum: Traditional Aircraft Engines 03-13-2016, 03:00 PM
Replies: 10
Views: 3,581
Posted By chepburn
Thanks for all the suggestions.... Just to be...

Thanks for all the suggestions....

Just to be clearer, the engine starts well using the procedure I have outlined (BTW Its always usually 5-10 deg F when I am flying in the winter, sometimes...
Forum: Traditional Aircraft Engines 03-12-2016, 09:20 AM
Replies: 10
Views: 3,581
Posted By chepburn
I prime WOT and full rich as well... forgot to...

I prime WOT and full rich as well... forgot to add that. When I crank it's at ICO until it catches.
Forum: Traditional Aircraft Engines 03-12-2016, 07:42 AM
Replies: 10
Views: 3,581
Posted By chepburn
Wierd IO360 start behavior

Good Morning...

My IO360A1B has exhibited a strange start behavior this winter. I haven't been as active this year, so have only managed to get flying one or twice a month.
I preheat the...
Forum: ADS-B 09-12-2015, 08:08 AM
Replies: 283
Views: 144,342
Posted By chepburn
Received my pi on Friday,, waiting for the...

Received my pi on Friday,, waiting for the SDRadio stick next week.

I'm planning to add a USB serial out to the go code to feed my Odyssey's ADSB in...looking forward to integrating this.

Once...
Forum: RV General Discussion/News 04-07-2015, 06:35 PM
Replies: 30
Views: 7,705
Posted By chepburn
Being a fellow Ottawa builder, I thought I would...

Being a fellow Ottawa builder, I thought I would pipe up...

My garage has a family room above it, and, my garage door is a poorly insulated one. I installed some seals above the door, but, they are...
Forum: RV Ongoing Maintenance Issues 03-13-2015, 06:19 AM
Replies: 74
Views: 32,320
Posted By chepburn
A pointer to a past thread

Hi,

I was a totally clueless on how to determine the correct flare on my fuel lines, and a fellow VAF member posted this reply to my...
Forum: RV General Discussion/News 01-26-2015, 03:21 PM
Replies: 42
Views: 15,559
Posted By chepburn
Fantastic work Guy! Now, there's somebody with...

Fantastic work Guy!

Now, there's somebody with almost enough clamps ! ;)
Forum: RV General Discussion/News 01-26-2015, 10:53 AM
Replies: 42
Views: 14,314
Posted By chepburn
All I can think of is OUCH!

Hmm.

Cool idea... but I think the ergonomics of our RVs would have to be altered a bit so that our legs wouldn't remain on board after activation......
Forum: RV General Discussion/News 01-24-2015, 04:11 PM
Replies: 42
Views: 15,559
Posted By chepburn
What's in your shop when the RV's done?

Along the lines of 'What's your Day job' I thought I'd start a thread on what your shop has in it after the RV left... I know, I know...some of you are going to say 'ANOTHER RV...' (Some of you...
Forum: RV-7/7A 01-22-2015, 07:32 PM
Replies: 11
Views: 3,627
Posted By chepburn
Hi Jeremy There has been a few threads on...

Hi Jeremy

There has been a few threads on related topics (if you haven't already read them)... do a search for 'impossible turn' that had a lot of discussion on the return to runway on engine...
Forum: RV-9/9A 01-19-2015, 02:04 PM
Replies: 13
Views: 6,292
Posted By chepburn
Hi Ryan, I noticed that you stated 'symmetrical...

Hi Ryan,

I noticed that you stated 'symmetrical airfoil'... Is that your intent? Adding an exposed airfoil under your fuse will alter the aerodynamic characteristics more than you probably want for...
Forum: RV Ongoing Maintenance Issues 12-14-2014, 11:48 AM
Replies: 12
Views: 2,694
Posted By chepburn
If it's cold outside, the grease on the pin can...

If it's cold outside, the grease on the pin can make it stick in the slot.
Mark is correct... but in winter operations (I notice you are in New Jersey)the grease can get pretty tacky, so do not...
Forum: RV General Discussion/News 12-03-2014, 11:55 AM
Replies: 8
Views: 1,600
Posted By chepburn
Most likely electrical

An update...

I pulled the recording file off of the Odyssey at lunchtime, and when I plot Oil Pressure and oil temperature, both plots have erratic readings for about 6 minutes until I throttled...
Forum: RV General Discussion/News 12-02-2014, 01:08 PM
Replies: 8
Views: 1,600
Posted By chepburn
Question: Diagnosing a low oil pressure warning

Hi all,

Today I had a low oil pressure warning go off about 10 minutes into my flight while doing light airwork. I performed the annual at the end of September and the oil filter and screen were...
Forum: RV General Discussion/News 10-05-2014, 08:54 AM
Replies: 4
Views: 2,476
Posted By chepburn
I replaced my stock chains with Tail Lynx after a...

I replaced my stock chains with Tail Lynx after a year. The Lynx give a nice positive feedback to the tailwheel (for me at least). I've been very happy with mine. Of course, my answer is just one...
Forum: RV General Discussion/News 08-23-2014, 06:38 AM
Replies: 30
Views: 7,114
Posted By chepburn
Mini with a fold over simple case protector. ...

Mini with a fold over simple case protector. Added a 2 belt velcro web, and its my new kneeboard. Room is limited in the front of the 8.
BTW, I got the non-retina model with WiFi and cellular. ...
Forum: RV General Discussion/News 06-22-2014, 10:33 PM
Replies: 1
Views: 1,209
Posted By chepburn
A little Oshkosh inspiration

Oshkosh! YAY!

Oh ya.... I have to work this year, so no trip for me. My first trip with C-GOGO was last year, and it was a blast.

For those of you who don't have to work this July, and are on...
Forum: RV General Discussion/News 05-11-2014, 10:43 AM
Replies: 32
Views: 10,330
Posted By chepburn
You probably have thought of this already.... but...

You probably have thought of this already.... but did you look for an unknown object floating around in your tail area that came loose?
Forum: RV Photo/Video URLs 01-25-2014, 07:09 AM
Replies: 52
Views: 27,635
Posted By chepburn
A little bit north of New York...

Not NYC, but maybe this one is a little younger (1898) than the Brooklyn...

https://sites.google.com/site/hepburnchris/home/misc-photos/bridge.jpg

(Marchand Bridge. Village of Fort Coulonge...
Forum: RV General Discussion/News 12-27-2013, 09:02 AM
Replies: 13
Views: 5,288
Posted By chepburn
Try browsing around http://www.worldofmaps.com/

Try browsing around


http://www.worldofmaps.com/
Forum: RV-8/8A 12-19-2013, 10:02 AM
Replies: 10
Views: 4,025
Posted By chepburn
It's actually not too bad. I was worried about...

It's actually not too bad. I was worried about that as well, but after the wing fairings are removed, it's not a big problem to get at the screws and resafety. Of course, that may also depend on...
Forum: RV-8/8A 12-18-2013, 05:43 PM
Replies: 10
Views: 4,025
Posted By chepburn
In Canada, we dont have a choice. We have to...

In Canada, we dont have a choice. We have to install a gascolator. In my case, the gascolator is installed in the port wing root just ahead of the fuel selector... the drain as low as I can get it...
Forum: RV-8/8A 09-26-2013, 05:26 AM
Replies: 127
Views: 78,677
Posted By chepburn
Service bulletin ALERT

Hi all,

Canada just issued a service bulletin for MS21042-6 nuts.
http://www.tc.gc.ca/media/documents/ca-opssvs/casa-2013-04.pdf

Although this isn't the preferred nut here in Steve's study, some...
Forum: RV Photo/Video URLs 08-06-2013, 07:13 AM
Replies: 832
Views: 619,708
Posted By chepburn
Oshkosh 2013

First morning for C-GOGO at Oshkosh (ever) :)

https://sites.google.com/site/hepburnchris/Oshphoto1.jpg
Forum: RV General Discussion/News 07-05-2013, 05:35 AM
Replies: 14
Views: 5,703
Posted By chepburn
That's fantastic Fred! Glad to see you are in...

That's fantastic Fred!

Glad to see you are in the air! Enjoy phase I !
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