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Search: Posts Made By: rv7charlie
Forum: Traditional Aircraft Engines Yesterday, 04:36 PM
Replies: 6
Views: 171
Posted By rv7charlie
That's a *very* optimistic weight for an angle...

That's a *very* optimistic weight for an angle valve engine; about right for a c/s prop, but you need to add for the governor.

I've seen some Lyc FWF numbers in the past, so I'm really looking...
Forum: Electrical Systems Yesterday, 10:07 AM
Replies: 181
Views: 8,199
Posted By rv7charlie
My statement:Originally Posted by rv7charlie ...

My statement:Originally Posted by rv7charlie View Post
Engineers' and designers' view of batteries, in both traditional automotive and aviation fields, is that batteries are *starting* batteries....
Forum: Electrical Systems Yesterday, 08:55 AM
Replies: 181
Views: 8,199
Posted By rv7charlie
The battery issues currently being discussed are...

The battery issues currently being discussed are what drove me to the 2 alt/1 bat choice for my installation. Not claiming to be right, or the only solution, but if your one alt fails, you are...
Forum: Electrical Systems 05-22-2018, 08:47 PM
Replies: 181
Views: 8,199
Posted By rv7charlie
Hi Ross; I appreciate your thoughts. If I were...

Hi Ross; I appreciate your thoughts.

If I were flying IFR with an E-dependent engine, I'd probably go whole hog with 2/2, as well. And it sounds like we agree on the quality/reliability of AGM...
Forum: Electrical Systems 05-22-2018, 04:58 PM
Replies: 181
Views: 8,199
Posted By rv7charlie
Hi Ross, I tried to detail my thought process...

Hi Ross,

I tried to detail my thought process that led me to the 2alt/1bat configuration. However, I'm not flying and you've been flying auto-style engine control for quite a while. Can you...
Forum: Electrical Systems 05-22-2018, 01:30 PM
Replies: 181
Views: 8,199
Posted By rv7charlie
No vac pad on this engine; not a Lyc. I'm also...

No vac pad on this engine; not a Lyc. I'm also not limited by the limited capacity of a low output 'backup' alternator, so my bus systems can be simpler. (either alternator can carry the full load of...
Forum: Electrical Systems 05-22-2018, 10:38 AM
Replies: 5
Views: 424
Posted By rv7charlie
This thread's not really about fuses...

And there seem to be some misconceptions, too.

Note that if you place a '12volt LED' (LED+current limiting resistor in series) across a fuse holder, it will light if the load side shorts to ground...
Forum: Electrical Systems 05-22-2018, 09:53 AM
Replies: 181
Views: 8,199
Posted By rv7charlie
Can I take a stab at that? I think the other...

Can I take a stab at that? I think the other responses were good, but I don't think the basic philosophy is clear yet. The following is my interpretation of what Nuckolls is saying.

It's not a...
Forum: RV General Discussion/News 05-21-2018, 08:49 AM
Replies: 32
Views: 2,440
Posted By rv7charlie
Mark, At the risk of sounding heretical, you...

Mark,

At the risk of sounding heretical, you could consider other options. If money is a significant factor (it always is, for me), and you both are of small to medium proportions, you could also...
Forum: RV General Discussion/News 05-20-2018, 10:52 PM
Replies: 4
Views: 477
Posted By rv7charlie
Factory a/c have a provision for reconstructing...

Factory a/c have a provision for reconstructing logs if they are lost. There would be no way to prove many of the reconstructed entries. Why would it be different with a homebuilt?

On prop changes:...
Forum: RV General Discussion/News 05-20-2018, 10:18 AM
Replies: 32
Views: 2,440
Posted By rv7charlie
I'm a little over 5'8", 155 lbs. I've ridden a...

I'm a little over 5'8", 155 lbs. I've ridden a couple of 1.5 hr legs in the back of my -4, that has rudder pedals in the back and no foot wells. I'd call it a tolerable, but not pleasant...
Forum: RV-12 05-19-2018, 09:43 PM
Replies: 7
Views: 852
Posted By rv7charlie
Hmmm... I'm ready to be (re)educated. Everything...

Hmmm... I'm ready to be (re)educated. Everything I've ever read said that an a/c in any single configuration always stalls at the same AOA, and only the stall airspeed varies.
Forum: Safety 05-19-2018, 12:58 PM
Replies: 8
Views: 427
Posted By rv7charlie
I suppose it could. My point is to ask, and have...

I suppose it could. My point is to ask, and have at least some confidence in the answer. Honestly, I'd be a bit surprised if the Lyc factory or other major overhaul shop went cheap; they have a lot...
Forum: Safety 05-19-2018, 12:24 PM
Replies: 8
Views: 427
Posted By rv7charlie
A bigger deal than missing logbooks would be how...

A bigger deal than missing logbooks would be how it was overhauled. It's perfectly legal to overhaul an engine to 'service limits'. That *could* mean opening it up, and if everything measures within...
Forum: RV General Discussion/News 05-19-2018, 11:51 AM
Replies: 32
Views: 2,440
Posted By rv7charlie
As a serial -4 owner, I'd have to reluctantly...

As a serial -4 owner, I'd have to reluctantly advise avoiding the -4, if you expect any extensive cross country work or 2-up acro. The back seat is pretty tight, 32 gallons means range is somewhat...
Forum: Electrical Systems 05-19-2018, 08:51 AM
Replies: 181
Views: 8,199
Posted By rv7charlie
Well, I guess that this is my 'Duhhh!' moment for...

Well, I guess that this is my 'Duhhh!' moment for the day...

My apologies. I breezed right past the 'single alternator' item while looking for 'electronically controlled engine' spec.

I may raise...
Forum: Electrical Systems 05-18-2018, 09:21 PM
Replies: 181
Views: 8,199
Posted By rv7charlie
With controllable alternators, you can check the...

With controllable alternators, you can check the diodes for shorts by shutting down the alts individually [edit: Should have completed the thought:] and individually monitoring bus voltages on either...
Forum: Electrical Systems 05-18-2018, 03:16 PM
Replies: 181
Views: 8,199
Posted By rv7charlie
"I am suspicious of parallel operations. I have...

"I am suspicious of parallel operations. I have tried paralleling power supplies, coils, and transistors and due to imperfect matching things get hot due to oscillations: on and off and the switching...
Forum: RV General Discussion/News 05-18-2018, 09:27 AM
Replies: 17
Views: 619
Posted By rv7charlie
In the interest of more precise technical...

In the interest of more precise technical language, here's the definition of an...
Forum: Electrical Systems 05-17-2018, 04:27 PM
Replies: 181
Views: 8,199
Posted By rv7charlie
Overvoltage issues should be handled by system(s)...

Overvoltage issues should be handled by system(s) independent of bus switching. The B&C regulators should handle that.

I found some of these on...
Forum: Electrical Systems 05-17-2018, 01:35 PM
Replies: 14
Views: 509
Posted By rv7charlie
I wouldn't hesitate to use it.

I wouldn't hesitate to use it.
Forum: RV General Discussion/News 05-17-2018, 01:32 PM
Replies: 17
Views: 619
Posted By rv7charlie
All the 'traditional' AC line current generators...

All the 'traditional' AC line current generators are alternators: they must make alternating current.

Their wave forms will be pretty close to what you'd see on regular line voltage. Their...
Forum: Electrical Systems 05-17-2018, 11:44 AM
Replies: 14
Views: 509
Posted By rv7charlie
For total clarity, are we talking about diodes in...

For total clarity, are we talking about diodes in the same location? I was addressing a suppressor across *the coil* of the contactor, to suppress arcing across the controlling switch. If the diode...
Forum: Electrical Systems 05-17-2018, 09:57 AM
Replies: 14
Views: 509
Posted By rv7charlie
Meh... Even the 1N4001 (1A 50V) is adequate, if...

Meh...

Even the 1N4001 (1A 50V) is adequate, if you look at *peak* ratings. But the 3A versions are physically more robust (fatter body and heavier leads). And the higher voltage ratings don't cost...
Forum: Tools 05-17-2018, 09:42 AM
Replies: 25
Views: 984
Posted By rv7charlie
Boy, Ed; how far do you need to go, to make...

Boy, Ed; how far do you need to go, to make yourself feel significant? ;-)

I suppose that a list of 4 taps (and no dies) could be considered a 'set', if you're using the strict mathematical...
Forum: RV-8/8A 05-16-2018, 08:42 PM
Replies: 8
Views: 718
Posted By rv7charlie
Steve, Most of the AEC drawings tie the alt B...

Steve,

Most of the AEC drawings tie the alt B lead to supply side of the starter contactor. That terminal is then fed by the load side of the master contactor. So the alternator and the starter...
Forum: Electrical Systems 05-16-2018, 03:59 PM
Replies: 130
Views: 28,841
Posted By rv7charlie
Two failures on which brand/type?

Two failures on which brand/type?
Forum: Tools 05-16-2018, 03:45 PM
Replies: 25
Views: 984
Posted By rv7charlie
I get the worry that re-tapping a plate nut may...

I get the worry that re-tapping a plate nut may defeat its purpose. But be aware that it's not uncommon to have the heads of A/N #6 steel screws twist off while *installing* them in some plate nuts....
Forum: VAF Classifieds (posts in here deleted after 30 days) 05-16-2018, 12:38 PM
Replies: 11
Views: 932
Posted By rv7charlie
Hi Brian, Sorry to be so long in replying;...

Hi Brian,

Sorry to be so long in replying; family illness...

Am I correct in assuming it will fit the older, narrow deck O-320? I think my engine came off a Pacer or Tri-Pacer. Engine log isn't...
Forum: RV General Discussion/News 05-15-2018, 09:04 AM
Replies: 61
Views: 5,364
Posted By rv7charlie
Well, that and how torturous the path is to the...

Well, that and how torturous the path is to the last lube point, and how much they are compensating for sloppy design work...

Ask anyone who's replaced a cam after losing a lobe that lifts opposing...
Forum: VAF Classifieds (posts in here deleted after 30 days) 05-15-2018, 05:53 AM
Replies: 11
Views: 932
Posted By rv7charlie
I'm interested in the fuel pump. What's its...

I'm interested in the fuel pump. What's its calendar age?

Charlie
Forum: RV General Discussion/News 05-14-2018, 02:58 PM
Replies: 19
Views: 1,156
Posted By rv7charlie
I feel your pain. :-) Changing from al to copper...

I feel your pain. :-) Changing from al to copper was probably a good idea. But you could have had undersized al wire, or (more likely) corroded, high resistance terminators on the ends of the wire....
Forum: RV General Discussion/News 05-14-2018, 12:23 PM
Replies: 19
Views: 1,156
Posted By rv7charlie
Bob, if you haven't read the Aeroelectric...

Bob, if you haven't read the Aeroelectric Connection, I'd strongly suggest getting and reading it before proceeding. Single point ground systems, while not absolutely required, can cure a host of...
Forum: Electrical Systems 05-13-2018, 12:15 PM
Replies: 181
Views: 8,199
Posted By rv7charlie
Well, even space-qualified stuff breaks....

Well, even space-qualified stuff breaks. Surprisingly often.

One of the reasons I like the Aeroelectric Connection list so much is the basic philosophy that drives it. Bob emphasizes to not ask how...
Forum: Electrical Systems 05-13-2018, 11:37 AM
Replies: 181
Views: 8,199
Posted By rv7charlie
Mark, A multi-throw toggle switch is yet another...

Mark,

A multi-throw toggle switch is yet another single point of failure. If it physically breaks (yes, it happens), you could lose both pumps.
Forum: RV-14 05-13-2018, 10:05 AM
Replies: 31
Views: 1,878
Posted By rv7charlie
There are obviously many ways to get it done. A...

There are obviously many ways to get it done. A multi-offender taught me to use quart ziplock bags instead of caulk guns. Turn one inside out, weigh out a roughly golf ball size mix on the bag. Turn...
Forum: RV-14 05-13-2018, 09:46 AM
Replies: 11
Views: 1,060
Posted By rv7charlie
It's occurred to me, but if they are electric...

It's occurred to me, but if they are electric jack screws and one fails, the canopy will have a very bad day.

I'd be more prone to using a shock strut on one side & a jack screw on the other. Shock...
Forum: Traditional Aircraft Engines 05-13-2018, 07:16 AM
Replies: 3
Views: 415
Posted By rv7charlie
They are technically rebuildable;...

They are technically rebuildable; see:
http://www.aircraftspruce.com/catalog/eppages/TEMPESTfuelpumpLYC.php?clickkey=17874

However, I've talked directly with Tempest about it, and they say it takes...
Forum: Tools 05-11-2018, 06:51 PM
Replies: 10
Views: 748
Posted By rv7charlie
For aluminum, you can get away with tooth pitch...

For aluminum, you can get away with tooth pitch normally used for wood, and wood cutting blade speed. And more coarse teeth are and advantage; hacksaw-density teeth tend to clog quickly when cutting...
Forum: RV-8/8A 05-10-2018, 12:19 PM
Replies: 8
Views: 483
Posted By rv7charlie
Do you have inverted oil? If not, you'll lose oil...

Do you have inverted oil? If not, you'll lose oil pressure long before you lose fuel pressure, with the stock pickup. Flop tube plumbing introduces numerous additional failure points. Make a rational...
Forum: RV General Discussion/News 05-10-2018, 11:30 AM
Replies: 41
Views: 3,263
Posted By rv7charlie
No ideas about waivers, except that it's probably...

No ideas about waivers, except that it's probably as much trouble to get a waiver as a permanent change to the op limits.

A 'major change' (increasing gross weight would qualify) typically requires...
Forum: RV General Discussion/News 05-07-2018, 03:53 PM
Replies: 18
Views: 1,166
Posted By rv7charlie
I'm currently getting quotes to run an additional...

I'm currently getting quotes to run an additional gas line (~200ft) for a generator. If I pay a contractor to run that line it's going to cost about 4 times the purchase price of the used generator....
Forum: RV Ongoing Maintenance Issues 05-07-2018, 12:57 PM
Replies: 15
Views: 1,436
Posted By rv7charlie
IIRC, they're available with non-removable...

IIRC, they're available with non-removable terminals. Slightly different p/n.
Forum: RV General Discussion/News 05-06-2018, 01:06 PM
Replies: 17
Views: 724
Posted By rv7charlie
For what it's worth, I've mentioned this...

For what it's worth, I've mentioned this product:
https://www.permatex.com/products/gasketing/permatex-permashield-fuel-resistant-gasket-dressing-flange-sealant/

in several prior threads on sealing...
Forum: RV-8/8A 05-06-2018, 06:31 AM
Replies: 39
Views: 2,391
Posted By rv7charlie
I don't think a regular ohm meter will give you...

I don't think a regular ohm meter will give you reliable info on that.
Forum: Alternative Engines 05-02-2018, 07:25 AM
Replies: 25
Views: 3,706
Posted By rv7charlie
Don't remember for certain, but I don't think...

Don't remember for certain, but I don't think they broke any. They broke a lot of other stuff; some 'interesting' choices & techniques bit them in the hindside along the way. Even had a water...
Forum: VAF Classifieds (posts in here deleted after 30 days) 05-01-2018, 05:07 PM
Replies: 5
Views: 1,759
Posted By rv7charlie
PM sent on the pump. Charlie

PM sent on the pump.

Charlie
Forum: RV General Discussion/News 05-01-2018, 07:34 AM
Replies: 64
Views: 5,322
Posted By rv7charlie
You have your answer from the vendor about the...

You have your answer from the vendor about the EFii. Why not ask AFP? I did, via PM, several years ago, and got a satisfactory answer describing how they actually tested their product. As part of the...
Forum: Electrical Systems 04-30-2018, 06:51 AM
Replies: 4
Views: 448
Posted By rv7charlie
I agree with Joe, though your data is a bit...

I agree with Joe, though your data is a bit vague. 'Promptly' is open to interpretation. :-) Does that mean instantly, or within a few seconds, or after many seconds? Engine at idle, or at cruise...
Forum: RV General Discussion/News 04-29-2018, 11:50 AM
Replies: 41
Views: 4,444
Posted By rv7charlie
What about Sam's Fokker?

What about Sam's Fokker?
Forum: RV General Discussion/News 04-29-2018, 10:28 AM
Replies: 41
Views: 4,444
Posted By rv7charlie
Hmmm.... Sam's Fokker is a replica in...

Hmmm....

Sam's Fokker is a replica in appearance, only. Nothing about it, structural, powerplant, etc, is anything like the original.

Can I apply the same standard to my -7 (replica of a -6,...
Forum: RV General Discussion/News 04-29-2018, 07:20 AM
Replies: 64
Views: 5,322
Posted By rv7charlie
Minor correction to Otis' earlier post: The...

Minor correction to Otis' earlier post: The Walbro pumps being used (and possibly the Airtex in other vendors' assemblies) are specifically designed for in-line use; not in-tank. Only reason for...
Forum: RV General Discussion/News 04-28-2018, 01:09 PM
Replies: 64
Views: 5,322
Posted By rv7charlie
Mike, It sounds like the rest of the sentence...

Mike,

It sounds like the rest of the sentence is 'as long as your primary pump is working properly.'

If it's not suitable for continuous operation, it's not suitable as a backup pump. The vendor...
Forum: RV General Discussion/News 04-28-2018, 11:29 AM
Replies: 64
Views: 5,322
Posted By rv7charlie
This is the primer war of the alt engine crowd...

This is the primer war of the alt engine crowd (where should the regulator be, and where should the bypassed fuel go). For anyone considering auto style electronic injection, this thread's for...
Forum: RV General Discussion/News 04-28-2018, 10:39 AM
Replies: 4
Views: 411
Posted By rv7charlie
Home Depot sells Sun Tuf brand. I put white on my...

Home Depot sells Sun Tuf brand. I put white on my single swing door about 25 years ago and it's still in great shape. My door faces ENE. It still provides good shade when open.

Charlie
Forum: Alternative Engines 04-28-2018, 07:33 AM
Replies: 25
Views: 3,706
Posted By rv7charlie
I found an article about the previous record...

I found an article about the previous record holder, titled 'High Desert Tales', in the Feb 2016 issue of Kitplanes. It's Lynn Farnsworth's Lancair Legacy Reno Racer. So.... yes, it would cost 'a...
Forum: RV General Discussion/News 04-27-2018, 04:38 PM
Replies: 8
Views: 691
Posted By rv7charlie
Hi Scott, I've run E-free premium mogas in both...

Hi Scott,

I've run E-free premium mogas in both the 160 hp carb'd -4s I've owned, for around 20 years. I've had *one* issue with vapor lock, and that one was totally my fault. Old, *winter blend*...
Forum: Alternative Engines 04-26-2018, 06:32 PM
Replies: 25
Views: 3,706
Posted By rv7charlie
C J, Following up on the durability question,...

C J,

Following up on the durability question, back on an actual keyboard. In general, rotaries are pretty hard to kill. The E-shaft (crank) and its bearings are very tough; truly massive boost...
Forum: Alternative Engines 04-26-2018, 02:14 PM
Replies: 25
Views: 3,706
Posted By rv7charlie
I'd say totally unknown. It's a unique build,...

I'd say totally unknown. It's a unique build, with aluminum end housings (norm is iron) and a monster turbo. A lot of the build decisions seemed to mimic unlimited Reno racers. Having said that, the...
Forum: Alternative Engines 04-26-2018, 11:14 AM
Replies: 25
Views: 3,706
Posted By rv7charlie
https://www.fai.org/record/daniel-gray-usa-18457 ...

https://www.fai.org/record/daniel-gray-usa-18457

Class C1b. What class was Rare Bear? I can't find it's record listed.
Forum: Alternative Engines 04-25-2018, 07:16 PM
Replies: 25
Views: 3,706
Posted By rv7charlie
Unofficial time to climb record to 10K feet (with Mazda power)

Potential new record for (all) piston powered airplanes: 1 minute 40 seconds.

RV-4/Rocket with turbo'd all aluminum Mazda 13B rotary.
https://www.youtube.com/watch?v=k_gedJrWbT4
Forum: RV General Discussion/News 04-25-2018, 05:44 PM
Replies: 26
Views: 2,096
Posted By rv7charlie
Manometer. Here you...

Manometer.

Here you...
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