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Search: Posts Made By: BillL
Forum: RV-10 Yesterday, 09:27 AM
Replies: 19
Views: 1,748
Posted By BillL
No question the physics exist, but is the quantified effect relevant?

Since the law of partial pressures would apply and effusion coefficient of N2 is about 3X that of O2 but the partial pressure of O2 is 1/3 that of N2 does that not mean the rate of mass effusion of...
Forum: RV-10 Yesterday, 07:59 AM
Replies: 24
Views: 1,594
Posted By BillL
Convenient ignorance. They denied any issue for...

Convenient ignorance. They denied any issue for years on the 6-7-9's too, while the demonstration planes had applied a reasonable fix. Finally agreed to a fix.

Look up Russ McCutcheon here on VAF...
Forum: RV General Discussion/News 02-16-2019, 05:11 AM
Replies: 27
Views: 2,195
Posted By BillL
+1 Yes, no matter what your total time. I joked...

+1 Yes, no matter what your total time. I joked that my first 5 instrument recurrence training flights I improved 100% each time. Mostly true actually. I found the small movement advice for my 7 was...
Forum: Alternative Engines 02-15-2019, 02:18 PM
Replies: 96
Views: 8,654
Posted By BillL
The injectors on the early Ford Powerstoke...

The injectors on the early Ford Powerstoke Diesels (the HEUI injectors) bypassed fuel back to the tank. Many factors, but it got so hot as to melt the poly tanks Ford was using. And the purpose was...
Forum: Alternative Engines 02-15-2019, 11:54 AM
Replies: 96
Views: 8,654
Posted By BillL
Ross has an excellent design for the air side,...

Ross has an excellent design for the air side, but you might want to provide information to the HX manufacturers (engineering sales dept) of thermal conductivity, specific heat, and viscosity to...
Forum: RV General Discussion/News 02-15-2019, 11:48 AM
Replies: 24
Views: 1,417
Posted By BillL
Bravo,

Yes, Bravo, Otis. First for your time and $ investment in understanding what you need, and second for validation of what the pumps will really do.

This kind of work when going off plan is needed to...
Forum: VAF Classifieds (posts in here deleted after 30 days) 02-15-2019, 07:41 AM
Replies: 4
Views: 1,346
Posted By BillL
It looks like my non-touch panel is not worth...

It looks like my non-touch panel is not worth much, but what a huge value for a buyer! I have found little that the touch does that the non-touch does not. Bluetooth connection for 650 flight plan...
Forum: VAF Classifieds (posts in here deleted after 30 days) 02-14-2019, 07:22 PM
Replies: 6
Views: 1,834
Posted By BillL
1800, that has to be a typo or including...

1800, that has to be a typo or including something unusual.
Forum: Alternative Engines 02-14-2019, 05:28 PM
Replies: 96
Views: 8,654
Posted By BillL
Has one of these engines ever flown with this...

Has one of these engines ever flown with this cooling system? Is it also for 100LL, autogas etc.?
Forum: Tools 02-14-2019, 02:34 PM
Replies: 28
Views: 1,242
Posted By BillL
Yes, 20-150 is good, and then 0-80 in-lb I use a...

Yes, 20-150 is good, and then 0-80 in-lb I use a beam too (https://www.zoro.com/gearwrench-beam-torque-wrench-14-dr-0-80-inlb-2955n/i/G8305409/?q=GEARWRENCH%202955n)l for the low range. Get out...
Forum: Primers 02-13-2019, 07:29 AM
Replies: 6
Views: 684
Posted By BillL
DoD test papers show 2024 is the most prone to...

DoD test papers show 2024 is the most prone to corrosion (copper alloys) and attention to the edges is addressing that. However, if you are priming with AKZO, it highly likely is the formulation with...
Forum: ADS-B 02-12-2019, 05:56 PM
Replies: 98
Views: 4,545
Posted By BillL
I hope you will find people digging in to your...

I hope you will find people digging in to your finances, purchasing habits, and location with such acceptance.

Your comment has already been registered in your dossier to associate your views with...
Forum: Glass Cockpit 02-12-2019, 12:06 PM
Replies: 21
Views: 1,874
Posted By BillL
Thanks Levi, I am just getting to use all the...

Thanks Levi, I am just getting to use all the features in IMC and looking forward to the vertical guidance acceptance from the 650 v6.51.

I just added the TO/GA button which was not available when...
Forum: RV General Discussion/News 02-12-2019, 08:26 AM
Replies: 18
Views: 1,243
Posted By BillL
The AP absolutely must be tuned for your...

The AP absolutely must be tuned for your airplane. G3X guys will help you with the correct documents for your panel/avionics. It will make all the difference in the world. Otherwise it can be very...
Forum: RV-7/7A 02-12-2019, 08:17 AM
Replies: 24
Views: 2,020
Posted By BillL
I absolutely hate grinding on a nice tool, but in...

I absolutely hate grinding on a nice tool, but in this case it is/was necessary. It will not fit or leave a mark otherwise. The material removed is not a stressed area.
Forum: Traditional Aircraft Engines 02-11-2019, 08:12 PM
Replies: 33
Views: 2,794
Posted By BillL
Short answer is YES, as soon as the break-in is...

Short answer is YES, as soon as the break-in is complete ( basically the temps have dropped) then change to a fully formulated oil. 50 hr is likely too long. Once the oil consumption has stabilized...
Forum: RV Ongoing Maintenance Issues 02-09-2019, 06:28 PM
Replies: 49
Views: 8,210
Posted By BillL
Then there would be nothing left. SDS...

Then there would be nothing left. SDS (https://441py33rout1ptjxn2lupv31-wpengine.netdna-ssl.com/wp-content/uploads/tech_docs/sds/01_USA-English/80631.pdf) did not seem to contain any PTFE. Odd.
Forum: RV-4 02-09-2019, 04:19 PM
Replies: 20
Views: 1,404
Posted By BillL
I did this too . . . you can do it!!

+1

Properly heated lead will pour like mercury. Just take some old spoons and use them to scrape off the scum (dross) on the top just before pouring.

Plaster works quite well for the shape, you...
Forum: RV General Discussion/News 02-09-2019, 03:57 PM
Replies: 12
Views: 1,360
Posted By BillL
We had the deep freeze with -20/25F then 4 days...

We had the deep freeze with -20/25F then 4 days later it was 50F. I'm pretty sure the air came from Mississippi (maybe Alabama). Thanks, we needed it. :D

Lucky I heated the hangar as soon as it...
Forum: RV General Discussion/News 02-08-2019, 01:26 PM
Replies: 59
Views: 4,465
Posted By BillL
Dave, anything special about that felt? I like...

Dave, anything special about that felt? I like this better than mine, it is baffle material and touches the flywheel. That makes it hard to remove the lower cowl. Thanks for...
Forum: Propellers 02-08-2019, 09:10 AM
Replies: 71
Views: 12,132
Posted By BillL
And for less informed (me), what is thermal...

And for less informed (me), what is thermal expansion for a matrix of carbon fiber? I looked up and found it was near zero or negative, or it shrinks with higher temps. Is that correct?

BTW, V-belts...
Forum: Alternative Engines 02-08-2019, 06:37 AM
Replies: 96
Views: 8,654
Posted By BillL
We did not call it a diesel engine, it is the...

We did not call it a diesel engine, it is the company name, right!?

http://www.marineenginedigest.com/specialreports/kerosene-outboards.htm
Forum: RV General Discussion/News 02-08-2019, 06:17 AM
Replies: 13
Views: 708
Posted By BillL
Yeah, kinda what we have now, but how can we...

Yeah, kinda what we have now, but how can we improve that? Even getting the data is an art of it's own. Meaning: instrumentation.
Forum: RV General Discussion/News 02-07-2019, 07:26 PM
Replies: 13
Views: 708
Posted By BillL
It seems to me that the flight testing section is...

It seems to me that the flight testing section is about how to fly the plane, what data to gather (POH) and (maybe) how to plot flight data.

Methods, tools, and particularly instrumentation seem to...
Forum: RV General Discussion/News 02-06-2019, 04:16 PM
Replies: 7
Views: 1,106
Posted By BillL
Just a thought . . . .

I made a bell crank for a different function and drilled a hole in the center of the tube with a deep chamfer so a small grease gun could be used to inject some lube. One would need some path for it...
Forum: Alternative Engines 02-06-2019, 04:05 PM
Replies: 96
Views: 8,654
Posted By BillL
The bsfc is characteristic of the type. It is...

The bsfc is characteristic of the type. It is left to the imagination as to just exactly how this heavy fuel engine works. It is supposed to be "spark ignited" but no discussion on whether it is...
Forum: RV General Discussion/News 02-06-2019, 08:30 AM
Replies: 59
Views: 4,465
Posted By BillL
Hey Steve, the inlet "diffuser" to that cooler...

Hey Steve, the inlet "diffuser" to that cooler looks pretty square, any chance some pressure/flow gains available there?

Off topic: maybe DR could/should make a topic category for "Data Acquisition"...
Forum: Temp / Test / Misc. (posts deleted after 2 weeks) 02-05-2019, 07:17 AM
Replies: 8
Views: 738
Posted By BillL
I think it is encrypted.

I think it is encrypted.
Forum: Traditional Aircraft Engines 02-04-2019, 08:13 AM
Replies: 44
Views: 5,158
Posted By BillL
Listening . . . . I think he means overlap of the...

Listening . . . . I think he means overlap of the main diameter and rod pin diameter, but that is only for short stroke engines. The cheek thickness is primary for longer strokes.

The beach marks...
Forum: RV-10 02-04-2019, 08:01 AM
Replies: 16
Views: 1,518
Posted By BillL
Inlet fuel lines pressure tested?

Don't forget, a tiny leak on the suction side will create many of the same symptoms.

Tunnel temps? It is a 10, right?
Forum: Alternative Engines 02-04-2019, 07:30 AM
Replies: 96
Views: 8,654
Posted By BillL
This site has the best explanation of the basic...

This site has the best explanation of the basic concept. They have been around for many years. http://www.bernardhooperengineering.co.uk/opads.htm

I could not find any US patents under Andy, but...
Forum: RV General Discussion/News 02-03-2019, 08:51 AM
Replies: 30
Views: 2,914
Posted By BillL
Jeff, thanks for the report, but I am not sure FF...

Jeff, thanks for the report, but I am not sure FF would have helped.

I too have adsb in/out and was doing a visual RNAV approach to a local field. I saw and heard a plane in the pattern. I was 18...
Forum: Safety 02-03-2019, 08:36 AM
Replies: 47
Views: 3,416
Posted By BillL
NASA did a lot of crash tests for GA in the...

NASA did a lot of crash tests for GA in the '75-'80 time period. All posted. I remember one of the conclusions was that the vertical human chassis loading was the worst case and NASA pushed to get...
Forum: RV General Discussion/News 02-02-2019, 09:45 PM
Replies: 59
Views: 5,041
Posted By BillL
Another item for the request list. Technical data...

Another item for the request list. Technical data and dimension drawings for accessories.

Many items in the accessories catalog have fuzzy pictures and no technical information or data sheets for...
Forum: RV-8/8A 02-02-2019, 07:52 AM
Replies: 7
Views: 659
Posted By BillL
More importantly, that spacer carries the...

More importantly, that spacer carries the compressive load of the bolt. So, don't leave it out.

The travel can be tuned by modifying the diameter of the left and right stop.
Forum: RV-10 02-02-2019, 07:48 AM
Replies: 18
Views: 1,900
Posted By BillL
Go - - get ready for a safe first flight and . . .

Don't worry about that washer trick until you have compared your temps with some airspeed.
Forum: Polishing your RV 02-02-2019, 07:41 AM
Replies: 3
Views: 396
Posted By BillL
A methylene chloride based stripper covered with...

A methylene chloride based stripper covered with some aluminum foil (to prevent the evaporation) will lift the paint. Just look at the label. Apply thick and scrape with a plastic scraper (one not...
Forum: Glass Cockpit 02-01-2019, 10:57 AM
Replies: 25
Views: 1,072
Posted By BillL
What happened to replies to this thread from...

What happened to replies to this thread from yesterday?
Forum: RV General Discussion/News 02-01-2019, 07:32 AM
Replies: 14
Views: 3,311
Posted By BillL
Buttonology training required - Thanks Ed

Thanks for posting, Ed. As I embarked on renewing my IFR skills, 55 hours since first flight, I found operating the panel to be a very steep learning curve. I noted your 100 hrs of learning required...
Forum: RV General Discussion/News 01-31-2019, 09:35 PM
Replies: 16
Views: 2,325
Posted By BillL
Not even April 1st!!

230kts Vne? Like a new prepunched RV-3+? With completeness of the -14. Hmmm.
Forum: Glass Cockpit 01-31-2019, 12:40 PM
Replies: 9
Views: 611
Posted By BillL
OK easier, but make the direction in degrees...

OK easier, but make the direction in degrees heading for the formula.

This (https://www.mathsisfun.com/algebra/vectors.html) will explain better than I will.

Doing it will be quicker than reading...
Forum: Glass Cockpit 01-31-2019, 12:00 PM
Replies: 9
Views: 611
Posted By BillL
What does the data look like. Is it x degrees at...

What does the data look like. Is it x degrees at x1 kts and y degrees at y1 kts?

You can break each one down to an orthogonal coordinate system, add the components then it is square root of the sum...
Forum: RV Ongoing Maintenance Issues 01-31-2019, 07:42 AM
Replies: 49
Views: 8,210
Posted By BillL
Talking But Alex, the PTFE is the only ingredient that...

But Alex, the PTFE is the only ingredient that that does not dissolve in gasoline, 1.3% so that makes the PTFE cost $153/oz. :D:D
Forum: RV Ongoing Maintenance Issues 01-31-2019, 07:27 AM
Replies: 49
Views: 8,210
Posted By BillL
Since Krytox 205 will not dissolve in gasoline or...

Since Krytox 205 will not dissolve in gasoline or evaporate I have bet on the .5oz lasting a long time. For the test phase, it was used sparingly (a pea per cap), just a very very thin film. Now to...
Forum: Traditional Aircraft Engines 01-30-2019, 04:39 PM
Replies: 44
Views: 5,158
Posted By BillL
It is, per the Superior site specifications.

It is, per the Superior site specifications.
Forum: Alternative Engines 01-30-2019, 12:24 PM
Replies: 96
Views: 8,654
Posted By BillL
Welcome aboard, Thomas!

Welcome aboard, Thomas!
Forum: Traditional Aircraft Engines 01-30-2019, 12:19 PM
Replies: 44
Views: 5,158
Posted By BillL
Anyone know???

Anybody know how they got the extra 1/4" of stroke?? Is the rod pin the same diameter as the 4.375" stroke (360)? i.e. same rod bearings?
Forum: Midwest 01-30-2019, 07:28 AM
Replies: 4
Views: 386
Posted By BillL
Yes, STUPID cold applies here too. You got me...

Yes, STUPID cold applies here too.

You got me beat, ours is only M30/M35 @ C75. BTW -40C=-40F
Forum: Traditional Aircraft Engines 01-29-2019, 09:53 PM
Replies: 44
Views: 5,158
Posted By BillL
If you go back and look at the the crank failure...

If you go back and look at the the crank failure on the Titan 400, and this one, it was a classic pressure induced fatigue of the inside fillet on the underside of the pin at TDC. Force on the rod at...
Forum: RV-7/7A 01-29-2019, 08:00 PM
Replies: 1
Views: 464
Posted By BillL
I followed the installation manual guidance for...

I followed the installation manual guidance for the connections between the GAP 26 and GSU 25. I like the AOA indicator popping up when it is needed. Vans buzzer won't do that. Not bad to have a...
Forum: My RV Build Project 01-28-2019, 08:26 PM
Replies: 8
Views: 518
Posted By BillL
I made a .050" aluminum strip for the split on my...

I made a .050" aluminum strip for the split on my 7. No saw tooth shape. But - -it had to be shaped in 3 dimensions to fit. Hysol to the cowl. It ended up shaped like a section of banana peel....
Forum: RV General Discussion/News 01-28-2019, 05:08 PM
Replies: 23
Views: 1,602
Posted By BillL
+1 I got this one after reading about the...

+1 I got this one after reading about the communications.

Disclaimer: I don't know if it is better than others. I have not tested the USB power with instrumentation.
Forum: Propellers 01-28-2019, 04:05 PM
Replies: 71
Views: 12,132
Posted By BillL
It certainly did not exhibit that dull sound when...

It certainly did not exhibit that dull sound when tapped across the "anomaly". It will be interesting to learn what the manufacturer finds.

BTW- a rotating imbalance would have no effect on blade...
Forum: RV General Discussion/News 01-28-2019, 02:40 PM
Replies: 17
Views: 1,248
Posted By BillL
I met with the FSDO guy about that time, he...

I met with the FSDO guy about that time, he signed the paperwork gave me a temporary card, then the permanent card came a couple of weeks ago.

Did you log-in to the FAA and check your airman...
Forum: Alternative Engines 01-28-2019, 11:59 AM
Replies: 270
Views: 32,811
Posted By BillL
Certainly welcome, Charlie, keep us posted.

Certainly welcome, Charlie, keep us posted.
Forum: Glass Cockpit 01-28-2019, 06:51 AM
Replies: 53
Views: 6,943
Posted By BillL
What voltage might the cube tolerate?

Fast flowing fuel can easily generate 30,000 volts (material dependent). A spark jumps through the hose to a ground making pin holes, so it is pretty high and can develop in a few inches.

What...
Forum: RV-3 01-27-2019, 01:17 PM
Replies: 13
Views: 1,689
Posted By BillL
And easy to make a nice compression seal on the...

And easy to make a nice compression seal on the full perimeter, if that is important.
Forum: Alternative Engines 01-27-2019, 11:33 AM
Replies: 270
Views: 32,811
Posted By BillL
Nicely stated, Ross. Charlie, should you choose...

Nicely stated, Ross.

Charlie, should you choose to pursue the TV further, an analytical model of the system is not that difficult and would allow data acquisition other than the strain gage...
Forum: Traditional Aircraft Engines 01-27-2019, 10:48 AM
Replies: 12
Views: 1,120
Posted By BillL
+1 I did my FF last year Jan 17, not too far...

+1 I did my FF last year Jan 17, not too far south of you. You also might get some roughness hesitation until the servo is off the idle circuit. I had to ranches mine considerably for that.

You...
Forum: RV General Discussion/News 01-27-2019, 10:32 AM
Replies: 883
Views: 189,158
Posted By BillL
I communicated poorly, sorry. I was thinking the...

I communicated poorly, sorry. I was thinking the rope can be pretensioned, but if they get wet or after load cycling might develop some slack (a potential failure mode). The location is not one...
Forum: RV-10 01-27-2019, 10:13 AM
Replies: 18
Views: 1,900
Posted By BillL
I tied down & chocked my 7 when doing the prop...

I tied down & chocked my 7 when doing the prop cycle test, but it really squatted when cycling the prop. Even starting at 1900 rpm. The book on my prop says 900 lbs thrust, your 10 will be higher....
Forum: Alternative Engines 01-27-2019, 09:49 AM
Replies: 270
Views: 32,811
Posted By BillL
Yes Bob. I used to generate photographs of...

Yes Bob. I used to generate photographs of these for stator blades in a holography lab using a real time hologram and a speaker behind the blade for the excitation. Prop companies use strain...
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