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Search: Posts Made By: rv6ejguy
Forum: RV General Discussion/News Yesterday, 01:11 PM
Replies: 4
Views: 309
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 Yesterday, 08:12 AM
Replies: 35
Views: 3,126
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, 11:55 AM
Replies: 35
Views: 3,126
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, 06:49 AM
Replies: 35
Views: 3,126
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, 11:09 AM
Replies: 104
Views: 33,702
Posted By rv6ejguy
They RETARD timing below 25"?

They RETARD timing below 25"?
Forum: Alternative Engines 01-02-2022, 06:30 PM
Replies: 801
Views: 217,367
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, 11:59 AM
Replies: 801
Views: 217,367
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, 09:42 AM
Replies: 801
Views: 217,367
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, 07:24 AM
Replies: 801
Views: 217,367
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, 10:06 PM
Replies: 801
Views: 217,367
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, 10:49 AM
Replies: 801
Views: 217,367
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, 10:33 AM
Replies: 39
Views: 5,301
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, 04:17 PM
Replies: 10
Views: 761
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, 10:32 PM
Replies: 801
Views: 217,367
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, 09:06 AM
Replies: 10
Views: 761
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, 05:11 PM
Replies: 33
Views: 9,100
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, 10:03 AM
Replies: 33
Views: 9,100
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, 08:32 AM
Replies: 35
Views: 5,467
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, 08:53 AM
Replies: 5
Views: 967
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, 06:43 AM
Replies: 35
Views: 5,467
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, 09:02 AM
Replies: 45
Views: 14,315
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, 10:21 AM
Replies: 156
Views: 76,468
Posted By rv6ejguy
Dave is using SDS EFI...

Dave is using SDS EFI...
Forum: Traditional Aircraft Engines 12-19-2021, 04:07 PM
Replies: 35
Views: 5,467
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...
Forum: Traditional Aircraft Engines 12-19-2021, 11:46 AM
Replies: 35
Views: 5,467
Posted By rv6ejguy
As Greg says, you can use mogas right now as he...

As Greg says, you can use mogas right now as he and others are, being aware of certain limitations and cautions.

This thread was really about unleaded avgas replacements though.
Forum: Traditional Aircraft Engines 12-19-2021, 10:06 AM
Replies: 35
Views: 5,467
Posted By rv6ejguy
E10 Mogas won't meet the vapor pressure or...

E10 Mogas won't meet the vapor pressure or detonation resistance criteria of current 100LL ASTM specs as a drop in 100LL replacement, though it's been proven to work fine on Experimental...
Forum: Traditional Aircraft Engines 12-19-2021, 09:15 AM
Replies: 35
Views: 5,467
Posted By rv6ejguy
I think it's safe to say that vapor pressure of...

I think it's safe to say that vapor pressure of any drop in avgas replacement fuel will be an important spec to meet along with all the others. With STCs, which already exist for using mogas in...
Forum: Traditional Aircraft Engines 12-19-2021, 07:18 AM
Replies: 35
Views: 5,467
Posted By rv6ejguy
Adding 5% ethanol has a minimal impact on...

Adding 5% ethanol has a minimal impact on improving octane rating.
Forum: RV Building Tips/Techniques 12-18-2021, 10:14 PM
Replies: 11
Views: 1,041
Posted By rv6ejguy
Electrical tape. It worked for me and I still...

Electrical tape. It worked for me and I still have the camera...
Forum: Traditional Aircraft Engines 12-18-2021, 06:20 PM
Replies: 35
Views: 5,467
Posted By rv6ejguy
It's pretty easy to obtain higher octane than...

It's pretty easy to obtain higher octane than 100LL exhibits by using aromatics however the specific gravity of these is generally around 17% higher than gasoline so if you put much in, fuel weight...
Forum: Traditional Aircraft Engines 12-18-2021, 10:09 AM
Replies: 35
Views: 5,467
Posted By rv6ejguy
This wasn't GAMI but Swift:...

This wasn't GAMI but Swift: https://www.purdue.edu/newsroom/research_park_foundation/2011/111025SwiftRadial.html The main point- "Test results showed that 100SF produced a higher detonation onset...
Forum: Traditional Aircraft Engines 12-17-2021, 07:54 AM
Replies: 35
Views: 5,467
Posted By rv6ejguy
Good info as always. I am slightly surprised that...

Good info as always. I am slightly surprised that GAMI won't submit to the full process but I mentioned the specific gravity aspect a couple years ago now being a big deal that can only be got around...
Forum: Traditional Aircraft Engines 12-14-2021, 05:12 PM
Replies: 33
Views: 3,230
Posted By rv6ejguy
Yes, depends on all the factors Dan mentioned....

Yes, depends on all the factors Dan mentioned. Splitting hairs trying to advance right up to the point of detonation isn't recommended and has been stated before isn't worth the few hp gained...
Forum: Traditional Aircraft Engines 12-14-2021, 08:00 AM
Replies: 33
Views: 3,230
Posted By rv6ejguy
Yup, Dan hits all the points here to be able to...

Yup, Dan hits all the points here to be able to run lower octane safely. Not rocket science and is already being done by numerous people here on VAF and elsewhere.
Forum: Traditional Aircraft Engines 12-13-2021, 06:32 PM
Replies: 33
Views: 3,230
Posted By rv6ejguy
Lots of folks here waiting for approval from...

Lots of folks here waiting for approval from Lycoming to run Mogas or UL avgas. That's your prerogative but there are at least 2 guys here who've run tons of mogas through their Lycomings for a...
Forum: Traditional Aircraft Engines 12-12-2021, 07:50 AM
Replies: 26
Views: 2,632
Posted By rv6ejguy
Mogas vapor pressure don't seem to be too much of...

Mogas vapor pressure don't seem to be too much of an issue in reality. We have at least one customer flying around 18,000 feet regularly in the summer without issues. Proper fuel system design is a...
Forum: Traditional Aircraft Engines 12-12-2021, 07:39 AM
Replies: 33
Views: 3,230
Posted By rv6ejguy
Programmable EIs allow you to safely run Mogas in...

Programmable EIs allow you to safely run Mogas in any Lycoming engine with std CRs. Simply retard the timing at high MAPs, re-advance at lower MAPs in cruise.

In any case, it seems like unleaded...
Forum: RV General Discussion/News 12-08-2021, 11:12 PM
Replies: 10
Views: 1,533
Posted By rv6ejguy
Thanks George. The airboat guys in FL love these...

Thanks George. The airboat guys in FL love these flywheels too strictly for the bling factor. :)
Forum: RV General Discussion/News 12-06-2021, 03:07 PM
Replies: 10
Views: 1,533
Posted By rv6ejguy
We need the 9.75 OD sheave to mount our crank...

We need the 9.75 OD sheave to mount our crank sensors and magnets so the small sheave or no sheave ones can't be used with SDS. Would work with mags or rear triggered EIs though.
Forum: RV General Discussion/News 12-06-2021, 09:38 AM
Replies: 10
Views: 1,533
Posted By rv6ejguy
It could be done to the same dimensions as the...

It could be done to the same dimensions as the older style ones which have about a 7.5 inch OD sheave. I haven't had any folks call for that to date as there is a decent supply of used ones floating...
Forum: RV General Discussion/News 12-05-2021, 05:46 PM
Replies: 10
Views: 1,533
Posted By rv6ejguy
$575US with the gear installed in bare finish....

$575US with the gear installed in bare finish. Add $40 for anodizing.
Forum: RV General Discussion/News 12-05-2021, 10:11 AM
Replies: 10
Views: 1,533
Posted By rv6ejguy
New Lightweight Billet Flywheels

We've just introduced the D4 lightweight flywheel for Lycoming engines. This is designed for engines using rear drive alternators only as it lacks the belt sheave. Weight is just over 4.5 pounds with...
Forum: Electronic Ignition Systems 12-03-2021, 10:41 AM
Replies: 37
Views: 5,395
Posted By rv6ejguy
As Dan correctly points out, the dyno with knock...

As Dan correctly points out, the dyno with knock sensing capability is your friend here.

There are many inter related factors here- CHT, IAT, timing, MAP, CR, squish, piston shape, fuel droplet...
Forum: Electronic Ignition Systems 11-29-2021, 05:13 PM
Replies: 37
Views: 5,395
Posted By rv6ejguy
It appears that the AV engine needs 3-5 less...

It appears that the AV engine needs 3-5 less degrees of ignition timing compared to a PV engine to make max power.

You can run 3-5 degrees more timing when 50 LOP because of the much slower burn...
Forum: Electronic Ignition Systems 11-24-2021, 11:20 AM
Replies: 37
Views: 5,395
Posted By rv6ejguy
Too much timing for this engine and CR running...

Too much timing for this engine and CR running ROP and even LOP. Results predictable.
Forum: Fuel Injection Systems 11-23-2021, 09:28 AM
Replies: 45
Views: 14,315
Posted By rv6ejguy
Update

We've had an amazing sales year so far in 2021, so much so that unfortunately we'll run out of EM-5 ECU boards before the end of this month. PCBs were delivered late for the next production run and...
Forum: RV General Discussion/News 11-21-2021, 01:46 PM
Replies: 27
Views: 3,482
Posted By rv6ejguy
Very cool. Pun intended. Great job engineering...

Very cool. Pun intended. Great job engineering each part of the system for light weight and performance.
Forum: Traditional Aircraft Engines 11-21-2021, 01:39 PM
Replies: 6
Views: 987
Posted By rv6ejguy
Awesome milestone!

Awesome milestone!
Forum: RV Building Tips/Techniques 11-15-2021, 07:13 AM
Replies: 16
Views: 2,225
Posted By rv6ejguy
I used 2216 on many things over the years. It's...

I used 2216 on many things over the years. It's thick enough to stay in place, has a good shelf life- years and the bond is impressive.

Aluminum oxidizes rapidly- in minutes, so surface prep and...
Forum: RV Building Tips/Techniques 11-14-2021, 07:14 AM
Replies: 16
Views: 2,225
Posted By rv6ejguy
3M Scotch Weld 2216 has been around over 45...

3M Scotch Weld 2216 has been around over 45 years, still made. It was used in the amazing Sorceress Reno biplane racer back in the '70s.

3M makes lots of structural adhesives these days:...
Forum: Electronic Ignition Systems 11-08-2021, 06:45 AM
Replies: 9
Views: 891
Posted By rv6ejguy
If you'll retain one mag, I think the CPI would...

If you'll retain one mag, I think the CPI would be a better choice. It can be blind mounted if you don't want to install the controller/ display in the panel. No need for a backup battery if you have...
Forum: Electronic Ignition Systems 11-06-2021, 10:08 PM
Replies: 9
Views: 891
Posted By rv6ejguy
We can do CPI or CPI-2 EI on Dual Mag engines....

We can do CPI or CPI-2 EI on Dual Mag engines. It's crank triggered. One coil pack can mount where the mag was and another on top of the case if it's a wide deck. If narrow deck, can mount the 2nd...
Forum: Electrical Systems 10-30-2021, 09:44 AM
Replies: 42
Views: 5,055
Posted By rv6ejguy
2 1/2 years on my Shorais. I fly infrequently...

2 1/2 years on my Shorais. I fly infrequently (about once per month on average) but never put these on a charger between flights. In winter, the hangar temp is around 6C. Cranks right up.

Some...
Forum: RV-14 10-30-2021, 09:29 AM
Replies: 8
Views: 1,585
Posted By rv6ejguy
In case you haven't seen this in the other...

In case you haven't seen this in the other unleaded fuel thread, the FAA has just added a bunch of engines to the list to run on the GAMI fuel:...
Forum: Fuel Injection Systems 10-21-2021, 09:29 AM
Replies: 45
Views: 14,315
Posted By rv6ejguy
Production Booked Through to Jan. 2022

As of today, we're booked with orders of EM-5 and CPI-2 systems through to approximately Jan. 15/22.

CPI and CNC'd billet parts can usually be sent out within 14-21 days, depending on stock or...
Forum: Fuel Injection Systems 10-18-2021, 02:01 PM
Replies: 45
Views: 14,315
Posted By rv6ejguy
We've got maps for most popular engines but there...

We've got maps for most popular engines but there are always subtle differences between each engine and exhaust system differences can change things a bit more beyond that. At the present time, with...
Forum: Fuel Injection Systems 10-14-2021, 10:17 PM
Replies: 45
Views: 14,315
Posted By rv6ejguy
I can't say I've stored pumps for 5 years so...

I can't say I've stored pumps for 5 years so can't be sure. They usually have Stoddard Solvent from testing inside which might get gummy over that time period. I see shelf life listed as from 6-85...
Forum: Fuel Injection Systems 10-14-2021, 11:44 AM
Replies: 45
Views: 14,315
Posted By rv6ejguy
We have brought out software updates from the...

We have brought out software updates from the EM-6 development and incorporated these into the latest EM-5, if hardware permits. Same on the CNC'd bits. Always trying to make things better if we can...
Forum: Fuel Injection Systems 10-14-2021, 09:42 AM
Replies: 45
Views: 14,315
Posted By rv6ejguy
Price Increase for 2022

We've seen a number of electronic component price increases recently plus some on aluminum billet, wiring and sensors. Much as I hate to do it, we'll be increasing prices on many of our systems by 3%...
Forum: RV Building Tips/Techniques 10-14-2021, 06:48 AM
Replies: 30
Views: 4,376
Posted By rv6ejguy
This setup is fine for carbs or Bendix FI but the...

This setup is fine for carbs or Bendix FI but the OP was asking about fuel systems for EFI.
Forum: RV Building Tips/Techniques 10-13-2021, 10:34 PM
Replies: 30
Views: 4,376
Posted By rv6ejguy
EFI fuel systems are different from mechanical...

EFI fuel systems are different from mechanical injection fuel systems. They have much higher fuel return rates.

70 micron filters are too coarse to protect the gerotor pumps and injectors commonly...
Forum: RV Building Tips/Techniques 10-12-2021, 01:30 PM
Replies: 30
Views: 4,376
Posted By rv6ejguy
George, Ralph answered your questions nicely....

George, Ralph answered your questions nicely. Several ways to do this properly.

Gascolators don't work for removing water at the high flow rates in EFI systems. Les Kearney actually tested this and...
Forum: Electronic Ignition Systems 10-12-2021, 06:43 AM
Replies: 29
Views: 3,190
Posted By rv6ejguy
Yup. Agreed.

Yup. Agreed.
Forum: RV Building Tips/Techniques 10-12-2021, 06:39 AM
Replies: 30
Views: 4,376
Posted By rv6ejguy
This is about an EFI install. Filters are...

This is about an EFI install. Filters are preferred to Gascolators.
Forum: Electronic Ignition Systems 10-10-2021, 07:55 AM
Replies: 29
Views: 3,190
Posted By rv6ejguy
I'm not sure where you are getting 20 atmospheres...

I'm not sure where you are getting 20 atmospheres from. An 8.5 CR engine will have a PR of around 8.5. The density ratio will be less however as a result of the temperature rise from compression and...
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