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Search: Posts Made By: rv6ejguy
Forum: Tools 05-15-2022, 08:01 AM
Replies: 24
Views: 2,782
Posted By rv6ejguy
Nice looking restoration Dan. Cool!

Nice looking restoration Dan. Cool!
Forum: Fuel Injection Systems 05-13-2022, 08:34 AM
Replies: 11
Views: 2,134
Posted By rv6ejguy
We've seen widely varied WB sensor life on 100LL-...

We've seen widely varied WB sensor life on 100LL- between about 2 and 450 hours. I have no idea why the huge variance.

The closed loop feature is mainly targeted for engines running unleaded fuels,...
Forum: Fuel Injection Systems 05-12-2022, 09:17 PM
Replies: 11
Views: 2,134
Posted By rv6ejguy
We're still working on the SD card code. It's...

We're still working on the SD card code. It's been very time consuming but looks like the end is sight on that (or is it?!! ). Finishing off the time stamp part this week. Hope to move onto the auto...
Forum: Fuel Injection Systems 05-12-2022, 03:37 PM
Replies: 11
Views: 2,134
Posted By rv6ejguy
YT Vid

Here's the promised video: https://www.youtube.com/watch?v=Yi0asWF0uuo

Please forgive some of my lazy editing here.

Systems for RV-10s continue to be our best selling. We are always working on...
Forum: Fuel Injection Systems 04-28-2022, 07:54 AM
Replies: 11
Views: 2,134
Posted By rv6ejguy
Not something I can normally do. In this case,...

Not something I can normally do. In this case, Les offered and it was a great reason not to be in the office that day. :)
Forum: Fuel Injection Systems 04-27-2022, 07:46 AM
Replies: 11
Views: 2,134
Posted By rv6ejguy
Update

Still working on SD card software but it continues to slowly come together. This is the most time consuming part of the whole EM-6 project.

Delays in receiving aluminum billet have slowed production...
Forum: Alternative Engines 04-15-2022, 07:27 AM
Replies: 32
Views: 11,644
Posted By rv6ejguy
Since you have an "in" here, could you ask George...

Since you have an "in" here, could you ask George about their ground durability and flight testing program? Must have done some prior to supplying production units.

Curious minds would like to know.
Forum: Alternative Engines 04-14-2022, 07:39 AM
Replies: 32
Views: 11,644
Posted By rv6ejguy
I've been asking these questions of Andrew for...

I've been asking these questions of Andrew for several years now. Crickets...

Some transparency and data would go a long way in prompting interest.
Forum: Traditional Aircraft Engines 03-26-2022, 09:08 AM
Replies: 109
Views: 7,296
Posted By rv6ejguy
Dan, I was answering the question posed by David...

Dan, I was answering the question posed by David Z: "How much detonation margin is left with 91, 93 or 94 octane fuels on 7.5 pistons? 8.5 pistons? 9.0 pistons? There is a standard detonation test...
Forum: Traditional Aircraft Engines 03-25-2022, 07:27 PM
Replies: 109
Views: 7,296
Posted By rv6ejguy
You won't know without extensive dyno testing...

You won't know without extensive dyno testing across the whole range of IATs, CHTs, AFRs, RPMs, and ignition timing with various fuel octanes and CRs. Many runs to document all of that and rather a...
Forum: Traditional Aircraft Engines 03-25-2022, 12:08 PM
Replies: 109
Views: 7,296
Posted By rv6ejguy
With any single engined aircraft, there are...

With any single engined aircraft, there are multiple single points of failure awaiting if your luck has run out...

If it makes you feel any safer, you can specify 7.5 CR pistons to give wider...
Forum: Traditional Aircraft Engines 03-24-2022, 07:07 PM
Replies: 109
Views: 7,296
Posted By rv6ejguy
It won't be detonating with the power pulled back...

It won't be detonating with the power pulled back running full rich and the instrumentation will inform you it's running hot. We're talking about the 99.999% operational aspect here, not what you'll...
Forum: Fuel Injection Systems 03-24-2022, 09:37 AM
Replies: 11
Views: 2,134
Posted By rv6ejguy
Had a setback related to chip availability for...

Had a setback related to chip availability for the new SD board. Went from 35,000 to zero in a day so had to re-design for a different one. You never know in this business these days which is why we...
Forum: Traditional Aircraft Engines 03-24-2022, 09:09 AM
Replies: 109
Views: 7,296
Posted By rv6ejguy
The factory Lycoming tests are for worst scenario...

The factory Lycoming tests are for worst scenario conditions and were developed when a single analog CHT and EGT probes were common. In this past era, pilots may not have had a good idea where the...
Forum: Alternative Engines 03-24-2022, 07:59 AM
Replies: 24
Views: 4,054
Posted By rv6ejguy
Some good points here. A point on the Lycoming...

Some good points here.

A point on the Lycoming fuel burns though. Most folks operate LOP in cruise with BSFC figures closer to .42, rather than book Lycoming values ROP..

This would put the figures...
Forum: Traditional Aircraft Engines 03-20-2022, 09:31 AM
Replies: 109
Views: 7,296
Posted By rv6ejguy
Detonation is related more to torque than hp....

Detonation is related more to torque than hp. BMEP is highest at peak torque. If you look at data from Ricardo and many others, they speak of detonation onset in relation to BMEP as this is...
Forum: Traditional Aircraft Engines 03-20-2022, 08:33 AM
Replies: 109
Views: 7,296
Posted By rv6ejguy
Fairly close to some Sky Dynamics torque figures...

Fairly close to some Sky Dynamics torque figures I've seen for PV 540 builds.

Ron sent me a photo of the dyno setup. This was a load cell connected to a lever arm. Prop torque reacts the whole...
Forum: Traditional Aircraft Engines 03-19-2022, 09:18 AM
Replies: 109
Views: 7,296
Posted By rv6ejguy
Yup, some of us already knew that... 2700 rpm...

Yup, some of us already knew that...

2700 rpm (still hadn't reached peak torque) 30", 100 ROP and 420 CHT are not benign conditions for detonation...

The BMEP would be over 180 psi which is fairly...
Forum: Traditional Aircraft Engines 03-17-2022, 09:47 AM
Replies: 109
Views: 7,296
Posted By rv6ejguy
Ron was good enough publish his data here from...

Ron was good enough publish his data here from the Ly-Con dyno with the aim to demonstrate the detonation margin on his engine running on mogas. He went to some expense and trouble to do these runs...
Forum: RV-14 03-16-2022, 10:11 PM
Replies: 8
Views: 869
Posted By rv6ejguy
Greg, we have a number of RV-14s flying with SDS....

Greg, we have a number of RV-14s flying with SDS. I can put you in touch with one customer who has several hundred hours on his and he'll give you the straight goods.

Main advantages of EFI over...
Forum: Traditional Aircraft Engines 03-16-2022, 07:30 PM
Replies: 109
Views: 7,296
Posted By rv6ejguy
Some folks commenting here are hung up on...

Some folks commenting here are hung up on comparing Ron's results to a stock 540. This isn't stock. In particular the intake manifold and throttle body are significantly different with tapered...
Forum: Traditional Aircraft Engines 03-14-2022, 08:21 AM
Replies: 109
Views: 7,296
Posted By rv6ejguy
I agree. The scenario they found in this test...

I agree. The scenario they found in this test seems questionable. PCP and flame speed are both lower LOP than at ROP and these are the major detonation drivers involved if IAT and CHT remain...
Forum: Alternative Engines 03-14-2022, 08:14 AM
Replies: 24
Views: 4,054
Posted By rv6ejguy
A couple observations: Unless the turbine is...

A couple observations:

Unless the turbine is flat rated, don't expect altitude performance to be much better than a naturally aspirated piston engine of the same SL power. Turbine efficiency...
Forum: RV-10 03-13-2022, 07:21 PM
Replies: 28
Views: 3,596
Posted By rv6ejguy
Until the price of CI aero engines drop into a...

Until the price of CI aero engines drop into a similar realm as that of a 540 or Jet A prices drop a lot lower than Avgas, it doesn't make sense in North America at this time. There isn't a proven,...
Forum: Traditional Aircraft Engines 03-13-2022, 04:47 PM
Replies: 109
Views: 7,296
Posted By rv6ejguy
Ron, thanks for posting info from your dyno runs...

Ron, thanks for posting info from your dyno runs at Ly-Con. Data is almost always better than conjecture and I think others here will find it interesting and useful.
Forum: Traditional Aircraft Engines 03-13-2022, 09:36 AM
Replies: 109
Views: 7,296
Posted By rv6ejguy
I've read this study before. This was a massive...

I've read this study before.

This was a massive test however the presentation of data in the charts is truly horrible, almost unreadable without a lot of patience, having entries running through...
Forum: Alternative Engines 03-10-2022, 10:06 AM
Replies: 14
Views: 2,651
Posted By rv6ejguy
Good stuff Brian. Thanks for posting the vid link.

Good stuff Brian. Thanks for posting the vid link.
Forum: Alternative Engines 03-08-2022, 08:05 AM
Replies: 27
Views: 5,563
Posted By rv6ejguy
Any turbocharged aircraft will true faster the...

Any turbocharged aircraft will true faster the higher you go until reaching critical altitude with fuel flows remaining essentially unchanged. Turbos= awesome. :)
Forum: RV Ongoing Maintenance Issues 03-08-2022, 08:00 AM
Replies: 20
Views: 1,732
Posted By rv6ejguy
I think what many people fail to realize is that...

I think what many people fail to realize is that these plug adapters are usually made from brass or bronze (lower tensile strength than steel) have stress risers on both sides and a wall thickness of...
Forum: Alternative Engines 03-06-2022, 08:44 AM
Replies: 27
Views: 5,563
Posted By rv6ejguy
Yup and on a pph basis, pretty much a wash in...

Yup and on a pph basis, pretty much a wash in cruise. The climb segment would see the biggest delta in fuel flows as the Lyc is pretty thirsty ROP here. RVs climb pretty fast though so you're not...
Forum: Alternative Engines 03-05-2022, 09:01 AM
Replies: 27
Views: 5,563
Posted By rv6ejguy
Looks like about 1 gph less than a 540 running...

Looks like about 1 gph less than a 540 running LOP at similar altitudes/ speeds. The non-turbo 540 can't match the high altitude/ high power setting speeds of course.
Forum: RV Ongoing Maintenance Issues 03-04-2022, 10:18 PM
Replies: 20
Views: 1,732
Posted By rv6ejguy
We pretty much follow a similar procedure to...

We pretty much follow a similar procedure to Lightspeed.
Forum: Fuel Injection Systems 03-04-2022, 09:13 PM
Replies: 11
Views: 2,134
Posted By rv6ejguy
Progress Report

We're still backlogged about 90 days, new orders replace the ones we ship out. Thanks to all the RV guys ordering. :)

Some parts shortages haven't helped here. We've stockpiled Micros, displays,...
Forum: Alternative Engines 03-04-2022, 07:46 PM
Replies: 27
Views: 5,563
Posted By rv6ejguy
Thanks for posting these numbers Scott. :)

Thanks for posting these numbers Scott. :)
Forum: RV-10 03-04-2022, 07:50 AM
Replies: 28
Views: 3,596
Posted By rv6ejguy
Deletion of the "ring gear" is really deletion of...

Deletion of the "ring gear" is really deletion of the flywheel or what Lycoming calls the Ring Gear Support. This would be done when planning to use SDS EFI or ignitions as many of the later Lyc...
Forum: RV-10 02-27-2022, 08:08 AM
Replies: 28
Views: 3,596
Posted By rv6ejguy
Jeff Schans at Thunderbolt is quite familiar with...

Jeff Schans at Thunderbolt is quite familiar with what can be deleted when fitting SDS EFI.

From our website: "When replacing legacy mechanical injection, carbs or mags with EFI/EI, you may want to...
Forum: RV General Discussion/News 02-25-2022, 07:58 AM
Replies: 13
Views: 1,414
Posted By rv6ejguy
He is legend. Never met him but have corresponded...

He is legend. Never met him but have corresponded with him. Friendly, super knowledgeable and all around nice guy. Congrats to him.
Forum: Electronic Ignition Systems 02-13-2022, 08:44 AM
Replies: 14
Views: 3,828
Posted By rv6ejguy
You do nice work Ashley. Thanks for sharing the...

You do nice work Ashley. Thanks for sharing the photos.
Forum: Alternative Engines 02-06-2022, 09:00 AM
Replies: 27
Views: 5,563
Posted By rv6ejguy
Congrats Scott, looking forward to more specs as...

Congrats Scott, looking forward to more specs as you fly the new engine.

I'm confused with the nomenclature describing this engine. It's been called so many different things over the years. Have...
Forum: Alternative Engines 01-31-2022, 09:58 AM
Replies: 4
Views: 3,404
Posted By rv6ejguy
Superior has enough problems on their plate now...

Superior has enough problems on their plate now after the triple debacles of the 400, 382 and then the latest crankshaft episodes. The engineering and funding required to implement a complete new...
Forum: Fuel Injection Systems 01-22-2022, 01:04 PM
Replies: 11
Views: 2,134
Posted By rv6ejguy
SDS EFI in 2022

We finally received some of our ECU boards from the loading facility on Friday, after waiting almost 60 days so we will be getting ECUs shipped out to those who have the rest of their kits...
Forum: RV General Discussion/News 01-18-2022, 12:11 PM
Replies: 6
Views: 835
Posted By rv6ejguy
Check the current entry requirements. They can...

Check the current entry requirements. They can change weekly and with little notice at this time:

https://travel.gc.ca/travel-covid

https://travel.gc.ca/travel-covid/travel-restrictions/exemptions
Forum: Alternative Engines 01-18-2022, 07:12 AM
Replies: 36
Views: 5,373
Posted By rv6ejguy
Looking forward to your updates on the...

Looking forward to your updates on the installation and later flying this engine. Cool project. :)
Forum: Alternative Engines 01-16-2022, 10:55 AM
Replies: 36
Views: 5,373
Posted By rv6ejguy
Some aero diesels require the replacement of the...

Some aero diesels require the replacement of the turbocharger at half time. Injection pumps (3 times in the case of the CD engines) before TBR. Same goes with alternator, various gearbox parts etc....
Forum: Alternative Engines 01-16-2022, 05:49 AM
Replies: 36
Views: 5,373
Posted By rv6ejguy
Many small airports in North America you'd...

Many small airports in North America you'd operate an RV into don't have Jet-A but most have Avgas.

The cruise (where we spend the majority of the mission) BSFC differences between SI engines...
Forum: Electronic Ignition Systems 01-13-2022, 10:09 AM
Replies: 104
Views: 38,302
Posted By rv6ejguy
They RETARD timing below 25"?

They RETARD timing below 25"?
Forum: Alternative Engines 01-02-2022, 05:30 PM
Replies: 803
Views: 237,806
Posted By rv6ejguy
Yup, understand. At some point it works well...

Yup, understand. At some point it works well enough and is reliable. If you leave it alone, it should continue to function that way...

Tinkering more cuts into your flying time and can introduce new...
Forum: Alternative Engines 01-02-2022, 10:59 AM
Replies: 803
Views: 237,806
Posted By rv6ejguy
Most of the liquid cooled experimenters started...

Most of the liquid cooled experimenters started out with something more than needed as far as inlet size went and if we cared about drag, we learned to improve the layouts and reduce those inlets...
Forum: Alternative Engines 01-02-2022, 08:42 AM
Replies: 803
Views: 237,806
Posted By rv6ejguy
Here is a photo Russell sent to me a few years...

Here is a photo Russell sent to me a few years back now. Note he has had several configuration changes over the years and after some damage suffered when a hurricane dropped the hangar door on the...
Forum: Alternative Engines 01-02-2022, 06:24 AM
Replies: 803
Views: 237,806
Posted By rv6ejguy
Along with Lee Behel's GP-5 (now sadly gone),...

Along with Lee Behel's GP-5 (now sadly gone), Russell has done the best job of liquid cooling I've seen in any Experimental. I feature his plane in a couple of videos on YouTube if you'd like to see...
Forum: Alternative Engines 01-01-2022, 09:06 PM
Replies: 803
Views: 237,806
Posted By rv6ejguy
Not turbocharged and uses a liquid to oil heat...

Not turbocharged and uses a liquid to oil heat exchanger as far as I know. Turbos have an intercooler and higher heat rejection to the oil. The Marcotte PSRUs we use have lower losses and require...
Forum: Alternative Engines 01-01-2022, 09:49 AM
Replies: 803
Views: 237,806
Posted By rv6ejguy
You'll need some air for the alternator, redrive,...

You'll need some air for the alternator, redrive, oil, intercooler as a minimum. If you're not using a liquid cooled center section on the turbo, it's a bad idea to starve that area of cooling air...
Forum: Safety 01-01-2022, 09:33 AM
Replies: 39
Views: 7,401
Posted By rv6ejguy
I think we all learn a few lessons after the...

I think we all learn a few lessons after the first build and probably the number one thing is to make access to items which may need inspection or maintenance as easy as possible once the aircraft is...
Forum: Traditional Aircraft Engines 12-31-2021, 03:17 PM
Replies: 10
Views: 1,473
Posted By rv6ejguy
$240 for the kit with 4 spare O-rings. O-rings...

$240 for the kit with 4 spare O-rings. O-rings are COTS so you don't need to buy them from us in the future.
Forum: Alternative Engines 12-30-2021, 09:32 PM
Replies: 803
Views: 237,806
Posted By rv6ejguy
The MAP gauge won't show anything very useful...

The MAP gauge won't show anything very useful below 150 knots or so. You need something that measures 0-10 inches H2O.

1 inch Hg is 13.6 inches H2O.
Forum: Traditional Aircraft Engines 12-30-2021, 08:06 AM
Replies: 10
Views: 1,473
Posted By rv6ejguy
Engines using a formed flange and O-ring seal at...

Engines using a formed flange and O-ring seal at the sump end as below will require that the tubes be cut and re-welded. On engines which use a hose and clamp connection at the sump end with 1.5 or...
Forum: Alternative Engines 12-28-2021, 04:11 PM
Replies: 33
Views: 11,076
Posted By rv6ejguy
Back on topic about LS engines. I have another...

Back on topic about LS engines. I have another customer who's been flying an LS powered aircraft for close to 20 years now. Last I heard, he had just over 1600 hours on it without major issues.
Forum: Alternative Engines 12-28-2021, 09:03 AM
Replies: 33
Views: 11,076
Posted By rv6ejguy
You can see a few LS powered planes here:...

You can see a few LS powered planes here: http://www.sdsefi.com/gm.htm
Forum: Traditional Aircraft Engines 12-28-2021, 07:32 AM
Replies: 35
Views: 7,709
Posted By rv6ejguy
Yes, for RV folks, most won't care whether the...

Yes, for RV folks, most won't care whether the fuel is a "drop in" replacement for 100LL as long as the FAA gives it their blessing through STCs or otherwise for their engines and it's widely...
Forum: RV-14 12-23-2021, 07:53 AM
Replies: 5
Views: 1,558
Posted By rv6ejguy
Stock timing on the 390 is 20 deg. Almost...

Stock timing on the 390 is 20 deg. Almost certainly safe to run 94 octane at 18 degrees of timing at high MAP as long as the CHTs are below 380F and IATs are below 120F.

Dropping CR will hurt power...
Forum: Traditional Aircraft Engines 12-23-2021, 05:43 AM
Replies: 35
Views: 7,709
Posted By rv6ejguy
Correct. Not so much aero engine testing as in...

Correct. Not so much aero engine testing as in the past for sure. Purdue refocused facilities towards gas turbine and rocket engine testing circa 2015. Their remaining piston engine test facilities...
Forum: Fuel Injection Systems 12-22-2021, 08:02 AM
Replies: 45
Views: 16,384
Posted By rv6ejguy
We were just informed that our run of ECU boards...

We were just informed that our run of ECU boards will be delayed until mid January at the chip loading facility unfortunately which will delay some system deliveries a bit more.

We'll keep building...
Forum: Fuel Injection Systems 12-21-2021, 09:21 AM
Replies: 157
Views: 81,512
Posted By rv6ejguy
Dave is using SDS EFI...

Dave is using SDS EFI...
Forum: Traditional Aircraft Engines 12-19-2021, 03:07 PM
Replies: 35
Views: 7,709
Posted By rv6ejguy
Yes, I know many folks running Mogas with no...

Yes, I know many folks running Mogas with no issues and I run it in my turbocharged Subaru with 9.25 CR plus boost. It still doesn't provide the margins required to satisfy forced induction legacy...
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