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Search: Posts Made By: svyolo
Forum: Electronic Ignition Systems 02-17-2020, 08:44 PM
Replies: 44
Views: 16,240
Posted By svyolo
Ross; I noticed the last couple of RV-10 videos...

Ross;
I noticed the last couple of RV-10 videos you are running up high (16-20k) WOT but setting the prop RPM to about 2400. Reading some other publications some recommend lower RPM for best...
Forum: Electronic Ignition Systems 01-28-2020, 06:56 AM
Replies: 21
Views: 1,369
Posted By svyolo
EFII's fuel system layout is a fuel rail layout. ...

EFII's fuel system layout is a fuel rail layout. It absorbs a significant amount of heat as it loops around the engine because of this. Their install manual recommends a minimum header tank size of...
Forum: Traditional Aircraft Engines 01-28-2020, 06:42 AM
Replies: 12
Views: 1,178
Posted By svyolo
Mike Busch also has a bunch of very long youtube...

Mike Busch also has a bunch of very long youtube videos. Several involve LOP. His claim, that makes sense to me, is that when LOP you can calculate hp by just multiplying the FF by a fixed...
Forum: RV General Discussion/News 01-22-2020, 09:19 PM
Replies: 49
Views: 4,955
Posted By svyolo
"Unloading" is just that. Reducing lift by...

"Unloading" is just that. Reducing lift by reducing AOA. Sometimes releasing some back pressure is required, sometimes full forward stick is required. Depends on what you are doing. You are...
Forum: RV models of the future (RV-??) 01-18-2020, 01:34 AM
Replies: 74
Views: 18,916
Posted By svyolo
I think the FAA understands the certified rules...

I think the FAA understands the certified rules written many decades ago aren't regulating light aviation, they are strangling it. I think the rumors of relaxing LSA rules are their attempt to...
Forum: RV models of the future (RV-??) 01-18-2020, 01:26 AM
Replies: 74
Views: 18,916
Posted By svyolo
You are giving the FAA way too much credit. They...

You are giving the FAA way too much credit. They do not have the expertise to decide or design anything on the factory floor, or the management of a large aircraft manufacturer.

They do not have...
Forum: RV-10 01-15-2020, 06:59 PM
Replies: 19
Views: 2,871
Posted By svyolo
Those last two quoted numbers are off scale high...

Those last two quoted numbers are off scale high for the advertised prices I have seen on the classified sites. At the moment there are few for sale, but that goes up and down as well.
Forum: Traditional Aircraft Engines 01-13-2020, 05:21 AM
Replies: 14
Views: 1,390
Posted By svyolo
I have a couple of VDO oil pressure transducers...

I have a couple of VDO oil pressure transducers on Subaru engines, mounted on the engine, that are almost 20 years old.
Forum: Electronic Ignition Systems 01-12-2020, 10:09 PM
Replies: 22
Views: 2,972
Posted By svyolo
I used to sell Subaru engine conversions and...

I used to sell Subaru engine conversions and parts. One of the parts was a speed sensor using a hall effect sensor and a magnet wheel on a CV joint. The wire coming out of the hall effect sensor...
Forum: Glass Cockpit 01-12-2020, 04:41 AM
Replies: 30
Poll: EFIS Poll
Views: 2,829
Posted By svyolo
I thought I was going to go with AFS or Dynon. I...

I thought I was going to go with AFS or Dynon. I really liked the AFS. I ended up with a new GRT Horizon 10.1. First power up soon.

I bought it for a few reasons. One of the side benefits that...
Forum: Traditional Aircraft Engines 01-12-2020, 04:19 AM
Replies: 14
Views: 1,390
Posted By svyolo
I was wondering something similar. I get the...

I was wondering something similar. I get the feeling that the sensors with NPT threads don't need it because they are friction locked. But I also have some fuel fittings on my EFI that are O-ring...
Forum: Glass Cockpit 01-08-2020, 08:23 PM
Replies: 26
Views: 2,255
Posted By svyolo
I will be shocked if the "legal" functions of...

I will be shocked if the "legal" functions of certified IFR navigators aren't incorporated into EFIS's in a very very short time. Garmin is obviously wanting this to be as far off as possible. ...
Forum: Glass Cockpit 01-06-2020, 09:21 PM
Replies: 26
Views: 2,255
Posted By svyolo
Flying an NDB, VOR, LOC approach using...

Flying an NDB, VOR, LOC approach using inertial/GPS (FMC technically) is a legal, and trained approach in the 121 world. You usually have to have raw data displayed, and referenced, approach...
Forum: Fuel Injection Systems 01-05-2020, 10:16 PM
Replies: 57
Views: 4,339
Posted By svyolo
Shorai doesn't really explain it very well, or...

Shorai doesn't really explain it very well, or openly, but the info is there on their website. A different brand actually gives two ratings on their website, one the actual capacity, and the other...
Forum: RV models of the future (RV-??) 01-03-2020, 08:22 PM
Replies: 36
Views: 8,347
Posted By svyolo
I have also heard of an amphibious option. 5...

I have also heard of an amphibious option. 5 minutes to bolt it on or off.
Forum: RV-14 01-02-2020, 07:46 AM
Replies: 11
Views: 1,773
Posted By svyolo
The 3 directions should form a triangle. Not...

The 3 directions should form a triangle. Not just 3 directions. An EFIS with gps inputs makes things even far easier than doing this:

Go straight into the wind. Wait for speed to stabilize. ...
Forum: Traditional Aircraft Engines 01-01-2020, 04:56 AM
Replies: 34
Views: 9,051
Posted By svyolo
The gear mounts are made to handle a great deal...

The gear mounts are made to handle a great deal of force. I will also somehow tie the tailwheel to the straps going to the main gear mounts, to keep it centered, and down. But the tension will be...
Forum: Traditional Aircraft Engines 12-31-2019, 08:49 PM
Replies: 34
Views: 9,051
Posted By svyolo
I am going to make a shroud and do the same on my...

I am going to make a shroud and do the same on my engine, and will be making the shroud soon.

The O-360 with a CS prop is going to pull 300-370 kg of force at full power. I doubt the RV tail...
Forum: Traditional Aircraft Engines 12-31-2019, 03:42 AM
Replies: 34
Views: 9,051
Posted By svyolo
I don't think a whole lot is critical. Except...

I don't think a whole lot is critical. Except maybe being strong enough so that it doesn't fly apart and damage the very expensive stuff right behind it.

Think hurricane force winds.
Forum: RV models of the future (RV-??) 12-28-2019, 05:22 AM
Replies: 29
Views: 8,089
Posted By svyolo
The smaller the turbine engine, the worse the...

The smaller the turbine engine, the worse the fuel specs. Turbojet, prop, whatever. Any very light airplane powered one ends up being not much more than a toy. Fun for sure, but not much more.
Forum: Fuel Injection Systems 12-27-2019, 04:46 AM
Replies: 57
Views: 4,339
Posted By svyolo
Shorai's explanation was a bit wordy, but they...

Shorai's explanation was a bit wordy, but they did say they used 6 Ah cells in a battery they rate at 18 Ah. For their purposes of a start battery, that has validity. Had it not been for Ross's...
Forum: Fuel Injection Systems 12-26-2019, 03:11 AM
Replies: 57
Views: 4,339
Posted By svyolo
EarthX rates the capacity of their batteries at a...

EarthX rates the capacity of their batteries at a 1C discharge rate. That means 100 percent of the battery capacity is used in 1 hour. Kind of a fast deep cycle usage.

Shorai rates there's as the...
Forum: Fuel Injection Systems 12-25-2019, 11:08 PM
Replies: 57
Views: 4,339
Posted By svyolo
"Shorai LFX are based on a completely different...

"Shorai LFX are based on a completely different chemistry. Not only do they have less than 1/3 the internal resistance per capacity than do lead-acid, they are also the ultimate "deep-cycle" battery....
Forum: Fuel Injection Systems 12-25-2019, 07:13 PM
Replies: 57
Views: 4,339
Posted By svyolo
I was going through Shorai's website and I went...

I was going through Shorai's website and I went through their FAQ's. There was one about AH capacity, but the wording was a bit confusing.

Comparing capacity ratings and weight between 2 different...
Forum: Fuel Injection Systems 12-24-2019, 09:20 PM
Replies: 57
Views: 4,339
Posted By svyolo
Ross; Since the discharge rate is fairly high, I...

Ross;
Since the discharge rate is fairly high, I wonder if you could have run the lithium battery to a much lower voltage.

I know you don't want to ruin a brand new battery. I wouldn't either. But...
Forum: Traditional Aircraft Engines 12-24-2019, 03:35 AM
Replies: 17
Views: 1,849
Posted By svyolo
Had I know it was an option to have the rebuilder...

Had I know it was an option to have the rebuilder break in the engine, I would have done it.

I can think of numerous absolutely wonderful reasons to break your engine in on the ground. I can also...
Forum: Traditional Aircraft Engines 12-23-2019, 01:51 AM
Replies: 17
Views: 1,849
Posted By svyolo
You can google or youtube. There are videos on...

You can google or youtube. There are videos on youtube of guys doing it. I will be doing it. I wish I could post pictures here but never figured it out.

Most are just a simple shroud on top of...
Forum: Fuel Injection Systems 12-15-2019, 02:25 AM
Replies: 105
Views: 21,608
Posted By svyolo
I finally figured how to cut a nice, crisp round...

I finally figured how to cut a nice, crisp round hole in Carbon Fiber to fit the old programmer in my panel.

Looks like I cut too soon.
Forum: Fuel Injection Systems 12-11-2019, 10:50 AM
Replies: 4
Views: 726
Posted By svyolo
Bob; I understand that about EFII EFI fuel...

Bob;
I understand that about EFII EFI fuel injection. But they sell a boost pump setup for Bendix style mechanical FI. It has a bypass when it is off so fuel goes straight to the engine driven fuel...
Forum: Fuel Injection Systems 12-11-2019, 01:30 AM
Replies: 4
Views: 726
Posted By svyolo
Boost pump running continuously

I saw a couple responses to running boost pumps (EFII, Andair, AFM) continuously. I saw a couple pros and cons of running them continuously, vs turning them on and off.

External fuel pumps do run...
Forum: Fuel Injection Systems 12-07-2019, 09:20 PM
Replies: 29
Views: 2,194
Posted By svyolo
I would like to have my setup so simple that most...

I would like to have my setup so simple that most pilots can fly it without me telling them what sequence to turn things on. Right now that is just master and start, and maybe then avionics master. ...
Forum: Fuel Injection Systems 12-07-2019, 10:36 AM
Replies: 29
Views: 2,194
Posted By svyolo
I asked the question to solicit opinions. I...

I asked the question to solicit opinions. I didn't expect that one. I will think about it. I have EFI, single big EFIS, 1 com, 1 Xponder/adsp.

Again, thanks.
Forum: Electrical Systems 12-07-2019, 02:12 AM
Replies: 148
Views: 19,100
Posted By svyolo
I read the entire Alt Reliability thread and ran...

I read the entire Alt Reliability thread and ran some numbers. I also contacted B&C for information. I was amazed how open they were with their own reliability information. It is the only company...
Forum: RV-6/6A 12-06-2019, 10:22 PM
Replies: 32
Views: 6,303
Posted By svyolo
I would need one of their biggest batteries to...

I would need one of their biggest batteries to start my IO-540. 36 ah capacity should keep the engine turning for at least 1.5, maybe 2 hours. 2 of them give me a whole bunch of engine run time...
Forum: Fuel Injection Systems 12-06-2019, 10:14 PM
Replies: 29
Views: 2,194
Posted By svyolo
Thanks again, Ross. Will do. I did ask B&C...

Thanks again, Ross. Will do.

I did ask B&C about running their alternator without a battery hooked up. They asked what my electrical load would be. I said 18 to 20 amps. They said it should be...
Forum: Fuel Injection Systems 12-06-2019, 05:47 AM
Replies: 29
Views: 2,194
Posted By svyolo
They do it by turning the master off (ignition...

They do it by turning the master off (ignition key off, or stop button). Hence my question.

If my battery BMS turns my battery off, my master contractor fails "open", etc, I would like the engine...
Forum: Fuel Injection Systems 12-05-2019, 09:49 PM
Replies: 29
Views: 2,194
Posted By svyolo
I wasn't planning on have the ECU's switched. I...

I wasn't planning on have the ECU's switched. I thought the SDS install stuff said it was optional.

Thanks for the responses. I will probably turn off the pump. Or put a big red guarded momentary...
Forum: RV-6/6A 12-05-2019, 09:41 PM
Replies: 32
Views: 6,303
Posted By svyolo
On my phone, sitting next to my bed, I want an...

On my phone, sitting next to my bed, I want an awesome BMS that makes the battery safe.

I kind of look at a BMS on an airplane battery like a limp home mode on a car ECU. It will shut down to...
Forum: Fuel Injection Systems 12-05-2019, 12:23 AM
Replies: 29
Views: 2,194
Posted By svyolo
Having the engine continue to run with the...

Having the engine continue to run with the battery disconnected or master off was my intention and the reason for the question.

Thanks for the responses.
Forum: Fuel Injection Systems 12-04-2019, 09:46 PM
Replies: 29
Views: 2,194
Posted By svyolo
EFI engine shutdown

Is there a preferred method for shutting down an EFI Lycoming? Just turn off the master like on a car, or shut the fuel pump off?

Obviously both will shut the engine down. I was interested because...
Forum: RV-6/6A 12-04-2019, 09:41 PM
Replies: 32
Views: 6,303
Posted By svyolo
Ross, I am going to look into it a bit more. I...

Ross,
I am going to look into it a bit more. I know that too much amperage at the start of the charge cycle is a problem. I think even Brand X states a maximum rating for the alternator for each...
Forum: RV-6/6A 12-04-2019, 09:37 PM
Replies: 32
Views: 6,303
Posted By svyolo
I am planning on an airplane version of the LI...

I am planning on an airplane version of the LI battery for my primary start battery, but don't really see the need for the same for a backup. I was going to use the biggest LI jump pack (32ah) that...
Forum: RV-6/6A 12-04-2019, 06:16 AM
Replies: 32
Views: 6,303
Posted By svyolo
Ross; Are you using anything special for a...

Ross;
Are you using anything special for a voltage regulator? I believe lithium would do OK up to 80% charge with a normal VR for lead acid, but the last 20% I am not so sure.

I do see they make...
Forum: RV-10 12-03-2019, 07:36 AM
Replies: 24
Views: 2,392
Posted By svyolo
I've been trained every year for 15-20 years on...

I've been trained every year for 15-20 years on dealing with them going off on commercial aircraft. I know it happens, but I have never seen it. I am not sure I even know anybody that has ever seen...
Forum: RV-10 12-03-2019, 05:00 AM
Replies: 24
Views: 2,392
Posted By svyolo
Every lithium battery requires some kind of BMS,...

Every lithium battery requires some kind of BMS, either in the battery, or the device being powered. If not they can be damaged, which is what usually causes the thermal runaway. Overcharging and...
Forum: Traditional Aircraft Engines 11-27-2019, 04:45 AM
Replies: 12
Views: 1,410
Posted By svyolo
I think the most interesting is just FF vs TAS...

I think the most interesting is just FF vs TAS for LOP (fuel and ignition map adjusted) against ROP. What ROP point? Assuming everyone leans their engines in cruise, some value ROP that represents...
Forum: RV-8/8A 11-25-2019, 11:58 PM
Replies: 687
Views: 735,066
Posted By svyolo
Why the mirrors on the RV-8? Still paranoid...

Why the mirrors on the RV-8? Still paranoid about Hornet guys at your six?
Forum: Traditional Aircraft Engines 11-01-2019, 02:31 PM
Replies: 34
Views: 9,051
Posted By svyolo
I will be breaking my engine in on the ground as...

I will be breaking my engine in on the ground as well. Googling and you tubing ground engine run shroud or something similar will show some good examples. Also airboat Lycoming pics also use...
Forum: RV-10 10-28-2019, 02:06 PM
Replies: 5
Views: 796
Posted By svyolo
Pure "epoxy" is very thick and difficult to use. ...

Pure "epoxy" is very thick and difficult to use. Everybody starts with the base, and adds things to it for whatever they plan on selling it for. Laminating epoxy is epoxy that is thinned. ...
Forum: Fuel Injection Systems 10-27-2019, 06:41 PM
Replies: 28
Views: 3,678
Posted By svyolo
I have a lot of experience with EFI stuff, and...

I have a lot of experience with EFI stuff, and could have "rolled my own". Pretty sure it would have worked.

But having to relearn painful lessons that others have, for one airplane, I thought the...
Forum: Fuel Injection Systems 10-23-2019, 03:14 PM
Replies: 8
Views: 1,068
Posted By svyolo
I will just put it on a switch. And no big...

I will just put it on a switch. And no big connectors on the wiring harness. Thanks for all the input.
Forum: Fuel Injection Systems 10-22-2019, 08:01 PM
Replies: 8
Views: 1,068
Posted By svyolo
I was also considering putting a fuel pressure...

I was also considering putting a fuel pressure switch on the pressure side, and if fuel pressure drops below a specific level, lets call it 30 psi, the second pump automatically turns on. Has...
Forum: Fuel Injection Systems 10-19-2019, 07:28 PM
Replies: 8
Views: 1,068
Posted By svyolo
EFI wiring question/philosophy

I am wiring up my SDS fuel injection. I was planning on using some automotive style (Delphi) multi-pin connectors on the cold side of the firewall to connect everything to the engine. I could just...
Forum: Electrical Systems 10-16-2019, 02:24 PM
Replies: 8
Views: 1,258
Posted By svyolo
I have spent enormous amounts of time and money...

I have spent enormous amounts of time and money troubleshooting and replacing expensive electrical parts, only to discover, in the end, a dirty or loose ground.

30 years of doing stuff, and it still...
Forum: RV-12/RV-12iS 10-08-2019, 07:36 PM
Replies: 40
Views: 5,425
Posted By svyolo
I never understood Vans stance on Vne based on...

I never understood Vans stance on Vne based on TAS either, and just assumed being most conservative.

I can't say I totally agree with "most conservative" all the time, but in the absence of a...
Forum: Propellers 10-07-2019, 03:37 PM
Replies: 13
Views: 1,825
Posted By svyolo
Do composite props pose less risk to the engine...

Do composite props pose less risk to the engine in the case of a prop strike vs a metal prop? I think I heard they did.
Forum: Traditional Aircraft Engines 10-02-2019, 08:35 PM
Replies: 22
Views: 1,980
Posted By svyolo
Yep. And the 1/10's that you G3x display mean...

Yep. And the 1/10's that you G3x display mean squat. The data's accuracy is limited by the most inaccurate input. I am not sure which that is. I doubt Garmin's speed is that accurate off of pitot...
Forum: Traditional Aircraft Engines 08-27-2019, 01:02 PM
Replies: 31
Views: 48,082
Posted By svyolo
Sorry for resurrecting a thread. I have a...

Sorry for resurrecting a thread. I have a rebuilt PV IO-540. I know where the oil cooler line in an out should be, but on the back of my "thermostat valve assembly" (thermavern?) I have another...
Forum: Fuel Injection Systems 08-26-2019, 06:30 PM
Replies: 7
Views: 1,229
Posted By svyolo
Thanks. Just trying to free up real estate.

Thanks. Just trying to free up real estate.
Forum: Fuel Injection Systems 08-26-2019, 05:19 PM
Replies: 7
Views: 1,229
Posted By svyolo
Ross; My question does have the word "injector"...

Ross;
My question does have the word "injector" in it, but couldn't find a different thread to resurrect.

Does the injector relay box run hot? I was looking where to mount it, and my number one...
Forum: Safety 08-25-2019, 06:37 PM
Replies: 61
Views: 13,739
Posted By svyolo
I was just at Arlington airshow for a few hours...

I was just at Arlington airshow for a few hours and asked the FAA booth about BasicMed.

I have had a Class 1 for over 30 years. Every 6 months. When your job depends on it, you don't go to an...
Forum: Safety 08-23-2019, 03:20 PM
Replies: 61
Views: 13,739
Posted By svyolo
That is why I specified 1st class. Medicals...

That is why I specified 1st class. Medicals twice a year. Not 2nd or 3rd.

Find out where your local airline pilots go to get their medicals. You will have a much better chance of passing your...
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