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Search: Posts Made By: rzbill
Forum: RV General Discussion/News 04-29-2022, 12:12 PM
Replies: 28
Views: 2,193
Posted By rzbill
I grew up with a '65 Super 21 Mooney. It was the...

I grew up with a '65 Super 21 Mooney. It was the second model year with the angle valve 200 IO-360-A1A

Yes, it had a filter bypass which was good for an inch of MP. So now we know the filter loss...
Forum: RV-7/7A 04-01-2022, 02:37 PM
Replies: 7
Views: 834
Posted By rzbill
Ryan's is close if not exactly per plans provided...

Ryan's is close if not exactly per plans provided circa 2010 like mine. 6 easy to access screws and out comes the filter.
My memory says the baffle system was in a state of design flux prior to that...
Forum: RV Building Tips/Techniques 01-09-2022, 07:52 AM
Replies: 13
Views: 2,433
Posted By rzbill
The part in question screams to be molded on a...

The part in question screams to be molded on a male mold upside down. With the plastic held in a picture frame, heat it until it is easily deformed by a poker (or finger :eek:). Lower the male mold...
Forum: RV Building Tips/Techniques 01-09-2022, 07:08 AM
Replies: 13
Views: 2,433
Posted By rzbill
PMMA (Plexiglas) is an amorphous plastic. Its...

PMMA (Plexiglas) is an amorphous plastic. Its shrink rate is 0.5%. Think about a pile of jumbled cooked spaghetti noodles to represent the molecules in an amorphous plastic.

Shrink rates on the...
Forum: RV Building Tips/Techniques 12-14-2021, 10:52 AM
Replies: 27
Views: 3,860
Posted By rzbill
High temperature rated lacing tape is...

High temperature rated lacing tape is available.

Fiberglass or Nomex woven tape. White or tan usually. I can't feel any wax in it but it does stay tied anyway.

I obtained a roll of the fiberglass...
Forum: RV Ongoing Maintenance Issues 12-02-2021, 04:18 AM
Replies: 6
Views: 2,057
Posted By rzbill
The copper content of 2024 raises its yield...

The copper content of 2024 raises its yield strength to 50000 psi vs 40000 for 6061.
Alclad does not require paint. 6061 does, unless you wish to rely on Lycoming oil spray for corrosion protection.
Forum: RV-8/8A 11-29-2021, 09:44 AM
Replies: 14
Views: 1,663
Posted By rzbill
Yeah, I think this will go in the file for...

Yeah, I think this will go in the file for getting custom made cables for a couple of 50 year old motorcycles.
Forum: RV Building Tips/Techniques 11-23-2021, 03:53 AM
Replies: 12
Views: 2,044
Posted By rzbill
By that technique, all sizes can be done with a...

By that technique, all sizes can be done with a #40 nut plate jig. I have probably a dozen jigs but the 40 was the one of choice.
Forum: Traditional Aircraft Engines 11-18-2021, 03:42 PM
Replies: 7
Views: 1,057
Posted By rzbill
Let's expand on this a little. No such thing as...

Let's expand on this a little.
No such thing as BSP but I know its semantics. You are describing BSPP (British Standard Pipe Parallel) which when supplied with o-ring or gasket is just like any US...
Forum: RV General Discussion/News 11-11-2021, 10:37 AM
Replies: 31
Views: 4,647
Posted By rzbill
From the state of Paul's fuselage shown in his...

From the state of Paul's fuselage shown in his pics, my fuselage lived upside down on a couple of custom sawhorses that were tall enough to let me work from a rolling drafting chair or standing up. ...
Forum: RV Building Tips/Techniques 11-04-2021, 11:04 AM
Replies: 11
Views: 1,483
Posted By rzbill
Just for another data point on cool curing, I...

Just for another data point on cool curing, I built my tanks in a cool basement. Pictures show us wearing sweatshirts. Proseal balance and well mixed. My memory says it took more than a week...
Forum: Glass Cockpit 11-02-2021, 05:59 PM
Replies: 9
Views: 2,084
Posted By rzbill
It is quite possible to program the 430w...

It is quite possible to program the 430w autodimming to work well in night and day.
The settings are essentially y=mx+b linear with a minimum floor dimness for the black of night.
In my case the...
Forum: Glass Cockpit 09-29-2021, 04:34 AM
Replies: 6
Views: 1,075
Posted By rzbill
Having flown IFR with WS screens for many years,...

Having flown IFR with WS screens for many years, I can say they are completely acceptable. There are no arguments above, recomending replacement, that are more than personal preferences. It will do...
Forum: RV-8/8A 09-21-2021, 03:56 AM
Replies: 20
Views: 4,050
Posted By rzbill
Are you the original builder.? You signature...

Are you the original builder.? You signature indicates no?

I ask because I replaced a large quantity of #8 screws in the cabin with these because they are very easy to drive with an electric...
Forum: Glass Cockpit 09-19-2021, 12:03 PM
Replies: 2
Views: 676
Posted By rzbill
Sounds like a normal initial setup procedure that...

Sounds like a normal initial setup procedure that was never done. System will fly without it but it will throw the message you got.
Forum: Propellers 09-17-2021, 04:39 AM
Replies: 35
Views: 4,459
Posted By rzbill
I see that you have chosen to operate the prop as...

I see that you have chosen to operate the prop as a fixed pitch unit from takeoff to Vx. As you are the first person i have talked with to choose that route, i had not considered it in the previous...
Forum: Propellers 09-15-2021, 04:24 AM
Replies: 35
Views: 4,459
Posted By rzbill
As Bob said, the comment about low pitch stop...

As Bob said, the comment about low pitch stop controlling takeoff climb rpm is incorrect.

The low pitch stop controls static rpm only. Meaning the max RPM while the craft is not moving. As soon as...
Forum: Propellers 09-14-2021, 04:15 AM
Replies: 35
Views: 4,459
Posted By rzbill
Since my Hartzell BA was spot on from the factory...

Since my Hartzell BA was spot on from the factory and I have heard of zero instances of builders in my area needing to adjust the fine pitch stop, I think the number is lower that you intimate. ...
Forum: Propellers 09-12-2021, 05:36 PM
Replies: 35
Views: 4,459
Posted By rzbill
Charlie, I read your last question above as...

Charlie,
I read your last question above as being much different than the question that started the thread.

Minimum pitch on any non aerobatic prop can be measured on the ground with the engine...
Forum: RV-7/7A 09-06-2021, 12:20 PM
Replies: 32
Views: 4,503
Posted By rzbill
A little lesson first. All capacitive level...

A little lesson first.

All capacitive level measuring systems use the metal probes (be they plates, wire or tubes) as the variable capacitor of a linear oscillator circuit sometimes called an rc...
Forum: RV Ongoing Maintenance Issues 09-05-2021, 06:57 AM
Replies: 24
Views: 4,386
Posted By rzbill
Fumoto is on my engine. It has WAY more field...

Fumoto is on my engine.
It has WAY more field service experience (via industrial market) than all of the specialized aviation units combined.
A few more grams are worth it.
Forum: Glass Cockpit 07-13-2021, 04:03 AM
Replies: 11
Views: 2,122
Posted By rzbill
Autocad 98

Autocad 98
Forum: Propellers 07-07-2021, 04:52 AM
Replies: 19
Views: 3,602
Posted By rzbill
The rpm limits recommended by Hartzell are not...

The rpm limits recommended by Hartzell are not affected by dynamic balance on the safe assumption the original tested prop was within reasonable balance. The restrictions come from different physical...
Forum: RV-4 07-02-2021, 10:48 AM
Replies: 21
Views: 5,421
Posted By rzbill
More thread drifting. Full throttle and tire...

More thread drifting. Full throttle and tire smoke. :D


The above reminded me of an exercise we did in Eng skool regarding heat rejection from fins. We were plotting the shape of the fin that...
Forum: GPS 06-09-2021, 06:30 PM
Replies: 16
Views: 3,179
Posted By rzbill
Boom boxes were a fad I did not follow.

Boom boxes were a fad I did not follow.
Forum: GPS 06-09-2021, 03:44 AM
Replies: 16
Views: 3,179
Posted By rzbill
Galaxy tab S2 running Avair meets all...

Galaxy tab S2 running Avair meets all requirements except communication via text messaging because it is not a phone with a phone number. Any phone can do that plus as far as I know any phone can...
Forum: RV Building Tips/Techniques 05-08-2021, 02:10 PM
Replies: 20
Views: 4,556
Posted By rzbill
I got probably a dozen in an eBay tool...

I got probably a dozen in an eBay tool purchase.

The one I used most often, by far, was standard 2 flange with a #40 pilot.
Forum: Glass Cockpit 05-06-2021, 06:41 PM
Replies: 15
Views: 1,252
Posted By rzbill
You have yet to indicate that the TAS calibration...

You have yet to indicate that the TAS calibration table in the AHRS menu is clear of any entries. Until that is stated as being clear of all entries, the obvious assumption is that there is bad data...
Forum: Glass Cockpit 04-15-2021, 10:31 AM
Replies: 12
Views: 1,235
Posted By rzbill
This is from dim memory of wiring my...

This is from dim memory of wiring my 430/GRT/Navworks/Digitrac and stuff together 10 years ago.

There was some restriction I ran into on the 430 that caused some headache.

I *think* it was...
Forum: RV-7/7A 04-13-2021, 02:57 PM
Replies: 9
Views: 1,603
Posted By rzbill
I remember those. When jigging it together, I...

I remember those.


When jigging it together, I think I never used more clamps in a smaller volume anywhere else on the plane.
Forum: RV-7/7A 04-09-2021, 04:14 AM
Replies: 30
Views: 7,433
Posted By rzbill
I did not follow the instruction order on my -M1B...

I did not follow the instruction order on my -M1B snorkel install.

I decided where I wanted the filter to be, fabricated the filter cage and ramp area and then cut the snorkel apart, fitted both...
Forum: RV Building Tips/Techniques 04-01-2021, 04:30 AM
Replies: 10
Views: 1,206
Posted By rzbill
Ray, Your thinking is correct. Micrometers do not...

Ray,
Your thinking is correct. Micrometers do not measure inside diameters. However, there are a couple of ways to use a micrometer along with other tools to get an inside diameter.
The most common...
Forum: RV Building Tips/Techniques 03-26-2021, 06:49 PM
Replies: 8
Views: 1,488
Posted By rzbill
Here's the images I promised

Here's the images I promised
Forum: RV General Discussion/News 03-25-2021, 04:11 PM
Replies: 74
Views: 21,897
Posted By rzbill
I breadboarded and bench tested the Jim Weir...

I breadboarded and bench tested the Jim Weir designs. They worked fine. I was at the point of deciding on a hobby box and drawing a PC board when I found the tiny Dynon convertors.

I measured the...
Forum: RV Ongoing Maintenance Issues 03-25-2021, 04:18 AM
Replies: 14
Views: 3,984
Posted By rzbill
The OPs idea has worked for me for 900hrs. I use...

The OPs idea has worked for me for 900hrs. I use a piece of aluminum angle instead of the PVC chute but concept is same. I assumed it worked because I was lucky with the vagaries of hose and wire...
Forum: RV Building Tips/Techniques 03-22-2021, 04:50 PM
Replies: 8
Views: 1,488
Posted By rzbill
Yes. It's easy. First, open the door until it's...

Yes. It's easy. First, open the door until it's edge is at the top of the scat tube. That's as far as it needs to go. It is fully open and further does nothing to change heat. You can see how much...
Forum: Traditional Aircraft Engines 03-13-2021, 05:22 AM
Replies: 3
Views: 914
Posted By rzbill
I would not be too concerned about it. Many...

I would not be too concerned about it. Many aluminum properties are different than steel by a factor of 3, as is the .001 vs .003 interference noted. With aluminum youngs modulus being 1/3 that of...
Forum: RV Ongoing Maintenance Issues 03-13-2021, 05:04 AM
Replies: 5
Views: 1,171
Posted By rzbill
Spruce or Wicks. Surely others too. Look for...

Spruce or Wicks. Surely others too. Look for MS20001-xx part number. That is the extruded version. Spruce does not clearly show it as extruded but Wicks does. Good luck Vlad.
Forum: RV Building Tips/Techniques 03-03-2021, 04:41 PM
Replies: 22
Views: 3,361
Posted By rzbill
As others have said, Vans uses the US drawing...

As others have said, Vans uses the US drawing convention called 3rd angle projection.
It is not used worldwide. It is common to see 1st angle projection on European documents.
They read 100% mirror...
Forum: RV-10 02-01-2021, 10:41 AM
Replies: 22
Views: 4,396
Posted By rzbill
What to do between kits? Go FLY. You are bound...

What to do between kits?


Go FLY. You are bound to be out of currency.


I got my instrument ticket during the build period. It was a way to stay current without wasting $$ boring holes in the sky...
Forum: RV Building Tips/Techniques 02-01-2021, 03:14 AM
Replies: 45
Views: 12,667
Posted By rzbill
I tried that first but the ink density of the...

I tried that first but the ink density of the lines was not as good as I wanted. Kinda grainy. Probably my ancient printer. I sent the file to Stein for better printing. Worked great. Zero...
Forum: RV Ongoing Maintenance Issues 01-27-2021, 04:35 AM
Replies: 20
Views: 3,399
Posted By rzbill
Actions regarding this leak depends on the owners...

Actions regarding this leak depends on the owners tolerance for being stranded at an outlying airport or worse, stranded in a ditch.

I had a winter leak of left brake a couple of years ago. Fluid on...
Forum: Glass Cockpit 01-20-2021, 05:52 PM
Replies: 4
Views: 849
Posted By rzbill
I replaced my PFD H1 WX with a Horizon EX. I did...

I replaced my PFD H1 WX with a Horizon EX. I did not have ARINC on that box. It is on my second WS. The hookup was plug and play plus a backup and restore to get my settings into the new EX.

I...
Forum: Painting your RV 01-12-2021, 10:01 AM
Replies: 4
Views: 1,169
Posted By rzbill
We purchased a Silhouette Cameo 4 for general...

We purchased a Silhouette Cameo 4 for general hobby work plus future Aircraft vinyl. I see no reason for it to not be able to do the planned artwork for the plane. The only limit is the 12" width...
Forum: Fuel Injection Systems 01-11-2021, 01:24 PM
Replies: 6
Views: 1,854
Posted By rzbill
I'm curious. My YIO-360-M1B came with a Precision...

I'm curious.
My YIO-360-M1B came with a Precision Airmotive RSA-5 clone.
Are they really not available through Lycoming any more?
Forum: RV Building Tips/Techniques 01-11-2021, 10:37 AM
Replies: 18
Views: 3,030
Posted By rzbill
I use these anywhere that pushing on a Philips...

I use these anywhere that pushing on a Philips bit would be a pita. Such as the seat pans (especially the edges) and all the baggage bulkheads on a side by side. Various other places but mostly...
Forum: RV-9/9A 01-07-2021, 04:10 AM
Replies: 34
Views: 7,421
Posted By rzbill
Descent to destination is one of the flight...

Descent to destination is one of the flight regimes that I really like with a CS prop since high power can be used. If you are ahead of the airplane via one of the mental math tricks already...
Forum: RV General Discussion/News 01-04-2021, 09:50 AM
Replies: 15
Views: 2,654
Posted By rzbill
And you can get red head lamps too. I use one...

And you can get red head lamps too.

I use one for both night flying and astronomy.
Forum: Tools 12-11-2020, 04:26 AM
Replies: 6
Views: 2,429
Posted By rzbill
Desert Rat +10 You don't need a lot of...

Desert Rat +10

You don't need a lot of storage.

Early in my build I used a scrap of wood to make a drill guide to hang on the wall above my bench. I drilled angled blind holes to stick the bits...
Forum: RV Ongoing Maintenance Issues 12-02-2020, 04:42 AM
Replies: 18
Views: 3,301
Posted By rzbill
EGT sensors fail. It's a fact of life. Keep at...

EGT sensors fail. It's a fact of life. Keep at least one in your stock of maintenance spares.

At one time, GRT was selling regular and long life probes. Now only one kind (the long life). I had...
Forum: Places To Fly...Things to See...Things to Eat 12-01-2020, 10:10 AM
Replies: 6
Views: 1,544
Posted By rzbill
Sorry but this made me chuckle. The Runway Café...

Sorry but this made me chuckle. The Runway Café at GMU is a very common destination. I don't know all the restaurants (especially south of GMU) but here's my list including what others have...
Forum: RV Building Tips/Techniques 11-25-2020, 11:53 AM
Replies: 12
Views: 2,725
Posted By rzbill
I have seen the results of a fuel fed engine...

I have seen the results of a fuel fed engine compartment fire on an RV (not mine).

Do not be concerned with aluminum firewall rivets.
The heat of the fire will follow the normal airflow pattern to...
Forum: RV Ongoing Maintenance Issues 11-24-2020, 04:05 PM
Replies: 12
Views: 1,819
Posted By rzbill
The AN4-27 should not move. It is designed to be...

The AN4-27 should not move. It is designed to be a tight clamp on the 610 "clevis" and the brass bushing. The bushing should not rotate on the bolt. The stick should be just barely shorter than...
Forum: RV General Discussion/News 11-24-2020, 03:44 PM
Replies: 5
Views: 1,813
Posted By rzbill
Its fun to use the RVs speed range for something...

Its fun to use the RVs speed range for something useful.
My home base KAVL is towered and they have gotten used to me topping the eastern ridge and high speed descending the 3K ft towards the field...
Forum: Glass Cockpit 11-24-2020, 03:52 AM
Replies: 6
Views: 1,300
Posted By rzbill
The EX replacement for my old WS unit came...

The EX replacement for my old WS unit came standard with internal GPS. it was not an option I had to select.
Forum: RV Ongoing Maintenance Issues 11-22-2020, 03:18 PM
Replies: 6
Views: 1,405
Posted By rzbill
Thanks for that, Gents. I did not know those...

Thanks for that, Gents.
I did not know those squeezer sets existed. I see ATS and Geek carry them.

While I don't mind hammer setting with the common brake tool, my Tatco is pouting in the corner....
Forum: Engine Monitors 11-20-2020, 04:13 AM
Replies: 16
Views: 4,013
Posted By rzbill
There is something else going on with the OPs...

There is something else going on with the OPs situation.
The chart provided, compared to the flight data gives 128hp not 99.9% of 160.

The problem is not the chart.
Forum: RV General Discussion/News 11-18-2020, 11:34 AM
Replies: 8
Views: 2,071
Posted By rzbill
There are a number of posts here about taper...

There are a number of posts here about taper reaming so a search might be useful to you.

The main gear trunnions are larger than the nose gear. The reamer is long enough to do both diameters but...
Forum: Florida (South) 11-03-2020, 11:33 AM
Replies: 9
Views: 2,324
Posted By rzbill
I guess this thread means that being a Signature...

I guess this thread means that being a Signature Customer at Asheville KAVL does rate for something even though I try not to think about the hanger rent :eek:. Fortunately I have always had a...
Forum: RV Ongoing Maintenance Issues 10-30-2020, 05:29 PM
Replies: 4
Views: 1,078
Posted By rzbill
If you find a friend with a milling machine, you...

If you find a friend with a milling machine, you may be able to save that latch by machining about 1/64" off the bottom surface of the latch. It will have the effect of sharpening the rounded corner...
Forum: Southeast 10-25-2020, 10:35 AM
Replies: 6
Views: 1,563
Posted By rzbill
+1 for Sailvi`s information.

+1 for Sailvi`s information.
Forum: RV-14 10-20-2020, 09:55 AM
Replies: 21
Views: 13,155
Posted By rzbill
Whale Oil, folks. High tech goes full circle......

Whale Oil, folks. High tech goes full circle... :)

Look up Cetyl Alcohol (the stuff on the label)

https://en.wikipedia.org/wiki/Cetyl_alcohol

And we thought Lycomings were antiquated.
Forum: Traditional Aircraft Engines 10-15-2020, 04:14 PM
Replies: 4
Views: 1,550
Posted By rzbill
OMG, :eek: you are giving me nightmares about...

OMG, :eek: you are giving me nightmares about my Heat and Mass Transfer class from 40 years ago. Forced convection ain't simple. Do us a favor and just fly, look at the gages over your years...
Forum: Electrical Systems 10-07-2020, 03:50 PM
Replies: 7
Views: 2,057
Posted By rzbill
Hi Claude, I just wanted to say that my post was...

Hi Claude,
I just wanted to say that my post was really to the OP and not in response to yours although it looks like that. :)

We were typing at the same time and you beat me to the button.

Fly on!
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