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Search: Posts Made By: rv6ejguy
Forum: RV-12/RV-12iS 08-08-2022, 11:17 AM
Replies: 7
Views: 591
Posted By rv6ejguy
We were running a 912 on our test stand back in...

We were running a 912 on our test stand back in 2007 with a wideband and found the carb delivered an AFR of right around 13 to 1 all the way from 3750 rpm and up. It was remarkably good.

Be aware...
Forum: RV General Discussion/News 08-05-2022, 09:05 AM
Replies: 14
Views: 2,623
Posted By rv6ejguy
You can use blade fuses too as I do in my plane...

You can use blade fuses too as I do in my plane for the last 19 years as well as many of our customers. Lighter, more compact, less expensive, potentially more reliable than breakers.

A typical 4...
Forum: Fuel Injection Systems 08-05-2022, 07:18 AM
Replies: 23
Views: 4,885
Posted By rv6ejguy
Thank you for all the interest shown at Osh in...

Thank you for all the interest shown at Osh in SDS and thanks to all our customers who took the time to talk with people and show off their installations this year.

As of Aug. 5, we've managed to...
Forum: Alternative Engines 07-31-2022, 02:24 PM
Replies: 29
Views: 3,319
Posted By rv6ejguy
This proof of concept engine was running back in...

This proof of concept engine was running back in 2017: https://www.youtube.com/watch?v=FEn1iCU6Hh0

Yes, lots to prove but that's why they're building the -7.

If nobody ever tries anything new,...
Forum: Fuel Injection Systems 07-27-2022, 06:19 PM
Replies: 23
Views: 4,885
Posted By rv6ejguy
Airventure Cup Race

Dave Anders again had the fastest RV in the race this year at 239 mph average. Good job Dave!:)
Forum: Fuel Injection Systems 07-27-2022, 11:01 AM
Replies: 23
Views: 4,885
Posted By rv6ejguy
Steve Brault has his Glastar N17L in the Glasair...

Steve Brault has his Glastar N17L in the Glasair booth. IO-390 with SDS EFI/EI. Another owner who's happy to talk with anyone interested in SDS if you can't meet up with any of the RV guys.
Forum: Fuel Injection Systems 07-26-2022, 08:24 AM
Replies: 23
Views: 4,885
Posted By rv6ejguy
More at Osh...

Be sure to visit Team Rocket at Booth 645. Ray Ward has his SDS shirt on today. He has a CPI-2 in his plane.

Les Kearney's RV-10 is parked in Row 357, next to the taxiway.
Forum: Fuel Injection Systems 07-26-2022, 07:04 AM
Replies: 23
Views: 4,885
Posted By rv6ejguy
Kyle Fowler will be performing at Oshkosh again...

Kyle Fowler will be performing at Oshkosh again this year in his yellow Long-Ez. He's been SDS equipped since 2019 and doing air shows all over North America. He just finished a show here at...
Forum: Fuel Injection Systems 07-26-2022, 06:51 AM
Replies: 23
Views: 4,885
Posted By rv6ejguy
We've got lots of those, small and large ones....

We've got lots of those, small and large ones. Just drop me an E-mail.
Forum: Traditional Aircraft Engines 07-24-2022, 08:48 AM
Replies: 74
Views: 4,562
Posted By rv6ejguy
Combustion is complete in a Lycoming engine well...

Combustion is complete in a Lycoming engine well before the exhaust valve opens. By the time the engine has completed the expansion (power) stroke and the exhaust valve opens, gas temperatures are...
Forum: Traditional Aircraft Engines 07-24-2022, 07:54 AM
Replies: 74
Views: 4,562
Posted By rv6ejguy
This isn't the chart I was looking for but it...

This isn't the chart I was looking for but it illustrates how far you'd have to lean to have a 10% loss in torque. Well lean of Stoich and peak EGT.
Forum: Fuel Injection Systems 07-24-2022, 07:35 AM
Replies: 23
Views: 4,885
Posted By rv6ejguy
Update

Ivan is in HBC row 317 near the homebuilt camping pavilion.
Forum: Traditional Aircraft Engines 07-24-2022, 07:32 AM
Replies: 74
Views: 4,562
Posted By rv6ejguy
Yes, there are differences between the typical...

Yes, there are differences between the typical atmo opposed engines most RVs have and supercharged, turbocharged or turbo compound radials however fundamentally, these are Otto cycle engines and...
Forum: Traditional Aircraft Engines 07-23-2022, 02:24 PM
Replies: 74
Views: 4,562
Posted By rv6ejguy
Lycoming conveniently seems to ignore all the...

Lycoming conveniently seems to ignore all the radial powered aircraft flying in the '50s where LOP operation was well proven over millions of hours. GAMI wasn't anywhere near the first to document...
Forum: Traditional Aircraft Engines 07-22-2022, 04:27 PM
Replies: 74
Views: 4,562
Posted By rv6ejguy
LOP operation will both lose power and cause PCP...

LOP operation will both lose power and cause PCP to occur later than ROP at the same rpm and MAP. CHTs and EGTs also drop. All these things mean less stress on the engine.

Best BSFC occurs at...
Forum: Alternative Engines 07-21-2022, 09:52 AM
Replies: 29
Views: 3,319
Posted By rv6ejguy
My mistake, it's 200 knots. What makes you think...

My mistake, it's 200 knots.

What makes you think that the Turbaero folks will be pushing past 200 KTAS during flight testing?

I'd think the main goal here is to flight test and prove the engine,...
Forum: Alternative Engines 07-21-2022, 07:15 AM
Replies: 29
Views: 3,319
Posted By rv6ejguy
I agree with Doug, it's a fascinating project....

I agree with Doug, it's a fascinating project. Bleeding edge tech at this level. It may or may not succeed.

Turbotech in France has a 130 SHP turbine flying now with a titanium recuperator. The...
Forum: Alternative Engines 07-20-2022, 01:11 PM
Replies: 29
Views: 3,319
Posted By rv6ejguy
Dave and team strike me as a pretty learned...

Dave and team strike me as a pretty learned bunch, unlikely to risk either themselves or their early engines by doing stupid pilot tricks.

The turbine won't put out much more power at altitude than...
Forum: Trip Write-ups 07-20-2022, 06:57 AM
Replies: 23
Views: 4,084
Posted By rv6ejguy
What an adventure! Thanks very much for sharing...

What an adventure! Thanks very much for sharing this with us. :cool:
Forum: Fuel Injection Systems 07-20-2022, 06:54 AM
Replies: 25
Views: 1,778
Posted By rv6ejguy
There is a mixture knob in this system so you can...

There is a mixture knob in this system so you can kill it that way if you wish. Most are just turning off the pumps but you can kill with ECU, or coil power too.
Forum: Fuel Injection Systems 07-19-2022, 06:57 AM
Replies: 25
Views: 1,778
Posted By rv6ejguy
The fuel system schematic on Page 2 of the main...

The fuel system schematic on Page 2 of the main installation manual gives a good view of the pump connections. We'll add further descriptions on the check valves and operation on the next manual...
Forum: Traditional Aircraft Engines 07-18-2022, 10:30 AM
Replies: 74
Views: 4,562
Posted By rv6ejguy
Interesting. I'd guess that best glide on an...

Interesting. I'd guess that best glide on an RV-10 is about 85 knots so your data would seem to indicate the Carson's Speed is very close to being right.
Forum: Traditional Aircraft Engines 07-18-2022, 10:00 AM
Replies: 74
Views: 4,562
Posted By rv6ejguy
Instead of debating the theory, let's validate...

Instead of debating the theory, let's validate reality with some flight testing and using your EFIS to do the calcs. I suggest the same altitude and WOT for all tests if possible and just adjust prop...
Forum: Fuel Injection Systems 07-18-2022, 09:31 AM
Replies: 23
Views: 4,885
Posted By rv6ejguy
Osh

We won't be at Osh this year again for a variety of reasons but will have at least 2 aircraft there with full SDS EFI (RV-14A and RV-10). The owners have generously offered to talk to interested...
Forum: Traditional Aircraft Engines 07-17-2022, 11:06 AM
Replies: 74
Views: 4,562
Posted By rv6ejguy
In the real world world, prop and engine...

In the real world world, prop and engine efficiency will enter the picture so it would be most interesting to put this to the test on various RVs with glass panels and see how theory correlates with...
Forum: Trip Write-ups 07-16-2022, 03:19 PM
Replies: 23
Views: 4,084
Posted By rv6ejguy
Great pix guys.:cool: Happy and safe journey.:)...

Great pix guys.:cool: Happy and safe journey.:) In Lycoming, we trust.
Forum: Traditional Aircraft Engines 07-16-2022, 03:17 PM
Replies: 74
Views: 4,562
Posted By rv6ejguy
Some good stuff here. There are so many...

Some good stuff here. There are so many interrelated factors and unknowns that actual flight testing is the only way to find that magic figure for each airplane. I'd guess that Hartzell doesn't...
Forum: Traditional Aircraft Engines 07-15-2022, 08:25 PM
Replies: 74
Views: 4,562
Posted By rv6ejguy
This would be a place where at best L/D, prop...

This would be a place where at best L/D, prop efficiency and BSFC curves come close to coinciding.

For the engine, best BSFC is a composite area where frictional losses are low and VE is high,...
Forum: Traditional Aircraft Engines 07-15-2022, 02:56 PM
Replies: 74
Views: 4,562
Posted By rv6ejguy
Dave Anders flies WOT and as low as 2100 rpm. He...

Dave Anders flies WOT and as low as 2100 rpm. He knows more about best MPG than just about anyone through extensive flight testing and documentation. 158 knots TAS on 4.8 GPH at 17.5. Of course his...
Forum: Fuel Injection Systems 07-08-2022, 03:08 PM
Replies: 23
Views: 4,885
Posted By rv6ejguy
Phone and internet were down for the whole day...

Phone and internet were down for the whole day thanks to a network outage. I'll try to get back to phone messages and emails on the weekend.
Forum: Alternative Engines 06-28-2022, 05:47 PM
Replies: 36
Views: 8,958
Posted By rv6ejguy
Really appreciate you publishing all this info....

Really appreciate you publishing all this info. Prototypes and test airframes usually accumulate some "extras" along the way. I did a similar weight reduction program some years after the build...
Forum: RV General Discussion/News 06-26-2022, 10:08 AM
Replies: 54
Views: 9,415
Posted By rv6ejguy
Mazda

Finn, looks like you've had multiple Mazda powered RVs. How has your experience with these been? Fuel burn vs. TAS, problems, engine life etc? Interested to know.
Forum: RV General Discussion/News 06-26-2022, 08:40 AM
Replies: 54
Views: 9,415
Posted By rv6ejguy
The OEM Mazda FPR is a good choice. Very...

The OEM Mazda FPR is a good choice. Very reliable. I've seen a number of problems with cheap aftermarket FPRs and feel they are a poor choice for aircraft. It's a critical component when running EFI,...
Forum: RV General Discussion/News 06-26-2022, 08:36 AM
Replies: 54
Views: 9,415
Posted By rv6ejguy
This is specifically why we don't recommend a...

This is specifically why we don't recommend a pump for each tank or submerged pumps. If it fails, you can't access fuel in that tank.
Forum: RV General Discussion/News 06-26-2022, 08:34 AM
Replies: 54
Views: 9,415
Posted By rv6ejguy
Correct and good point. TI specifically says not...

Correct and good point. TI specifically says not to use PWM on the GSL series of pumps. They do make other pumps designed to work with PWM.
Forum: RV General Discussion/News 06-26-2022, 08:32 AM
Replies: 54
Views: 9,415
Posted By rv6ejguy
JDT is a reputable source of genuine TI pumps. :)

JDT is a reputable source of genuine TI pumps. :)
Forum: RV General Discussion/News 06-25-2022, 08:08 AM
Replies: 54
Views: 9,415
Posted By rv6ejguy
BPR isn't a term I'm familiar with but if your...

BPR isn't a term I'm familiar with but if your refer to the pressure regulator (usually abbreviated FPR), it doesn't care how much flow goes through it as long as not so excessive as to exceed its...
Forum: RV General Discussion/News 06-24-2022, 08:53 PM
Replies: 54
Views: 9,415
Posted By rv6ejguy
Discharge should to be level or higher than...

Discharge should to be level or higher than inlet.

Flooded inlet is safest and gives the least chance of vapor lock with Mogas, hot day, high altitude.

If the pumps sound gravelly, they are on...
Forum: RV General Discussion/News 06-24-2022, 05:37 PM
Replies: 54
Views: 9,415
Posted By rv6ejguy
I've run a 392 for over 5000 hours in our turbo...

I've run a 392 for over 5000 hours in our turbo shop car. Never touched, still working fine and producing enough volume and pressure to feed 275hp.

I have many dozens of customers with over 500...
Forum: Alternative Engines 06-24-2022, 11:56 AM
Replies: 68
Views: 10,578
Posted By rv6ejguy
Good stuff. Kudos for putting the "E" back in...

Good stuff. Kudos for putting the "E" back in Experimental. A most interesting project.:)

We're all hoping it lasts well and could pave the way for a few more wishing for something different up...
Forum: Alternative Engines 06-23-2022, 07:10 AM
Replies: 68
Views: 10,578
Posted By rv6ejguy
I'd generally agree with Larry here on leaning...

I'd generally agree with Larry here on leaning too far with this high specific output engine. Unless it has oil jetted, forged pistons, the heat flux into the piston crowns and upper ring land areas...
Forum: Canada 06-20-2022, 08:41 PM
Replies: 31
Views: 5,262
Posted By rv6ejguy
Did you happen to ask this inspector what purpose...

Did you happen to ask this inspector what purpose a drain on the bottom of the filter would serve since in most RV-10s with root filters it's a couple inches higher than the drain on the tank? How...
Forum: Canada 06-19-2022, 09:50 PM
Replies: 31
Views: 5,262
Posted By rv6ejguy
I'll get Les Kearney to comment here in more...

I'll get Les Kearney to comment here in more detail. I understand a new information circular will soon be distributed to MDRA inspectors making all this crystal clear for them after claiming they...
Forum: Alternative Engines 06-19-2022, 11:58 AM
Replies: 68
Views: 10,578
Posted By rv6ejguy
Very cool! :cool: Keep us updated as you build...

Very cool! :cool: Keep us updated as you build more time on it.
Forum: Alternative Engines 06-19-2022, 08:22 AM
Replies: 42
Views: 4,906
Posted By rv6ejguy
I agree, without FWF kits and a company test/...

I agree, without FWF kits and a company test/ demo plane, I don't see anyone taking a big market share away from Lycoming any time soon.

The only other sub $85K only engines existing right now to...
Forum: Alternative Engines 06-17-2022, 05:52 PM
Replies: 42
Views: 4,906
Posted By rv6ejguy
I wasn't thinking market disruption as in...

I wasn't thinking market disruption as in substantially lower prices, more a second reliable and well supported choice that you don't have to wait 24 months for delivery.
Forum: Alternative Engines 06-17-2022, 01:40 PM
Replies: 42
Views: 4,906
Posted By rv6ejguy
EPI was developing this for a client:...

EPI was developing this for a client: http://www.epi-eng.com/aircraft_engine_products/aircooled_4-cyl_aircraft_engine.htm

Haven't heard anything more for about 6 months now but shows what can be...
Forum: Alternative Engines 06-17-2022, 12:43 PM
Replies: 42
Views: 4,906
Posted By rv6ejguy
The liability issues and small quantities are the...

The liability issues and small quantities are the reasons why you won't see an auto OEM skim complete engines off their regular production line for aircraft. That idea is dead right there and there...
Forum: Alternative Engines 06-17-2022, 11:09 AM
Replies: 42
Views: 4,906
Posted By rv6ejguy
The current backlog of RV kit orders means that...

The current backlog of RV kit orders means that hundreds of engines will also be needed to power them. Vans has only got busier over the years as certified aircraft prices skyrocket.

It would seem a...
Forum: Alternative Engines 06-17-2022, 09:47 AM
Replies: 42
Views: 4,906
Posted By rv6ejguy
My take is that few OEM automakers will knowingly...

My take is that few OEM automakers will knowingly supply engines off their assembly lines for Experimental or certified aircraft strictly from profit and liability standpoints.

I think to path to...
Forum: Alternative Engines 06-16-2022, 12:19 PM
Replies: 42
Views: 4,906
Posted By rv6ejguy
Dart engines in the US casts/ machines their own...

Dart engines in the US casts/ machines their own heads and blocks and say that they can produce these competitively in the US. I'd be willing to pay for a US made and supported engine even at a 30%...
Forum: Alternative Engines 06-16-2022, 09:48 AM
Replies: 42
Views: 4,906
Posted By rv6ejguy
Interesting when Lycoming has a 2 year backlog...

Interesting when Lycoming has a 2 year backlog and RV-10s are the largest consumer of Experimental 540s. Seems like an odd decision once they already had tooling and production up and running. I...
Forum: Alternative Engines 06-16-2022, 08:57 AM
Replies: 42
Views: 4,906
Posted By rv6ejguy
My criteria for a 540 alternative would be near...

My criteria for a 540 alternative would be near equal or better weight, fuel burn, power and maintenance hours per flight hour and of course better availability than 2 years and price in the same...
Forum: Alternative Engines 06-16-2022, 07:30 AM
Replies: 42
Views: 4,906
Posted By rv6ejguy
I assume because RVs are designed around...

I assume because RVs are designed around Lycomings but all it would take is for Conti to buy an RV-10 and engineer the mount and installation of a 550 and do the flight testing. Of course they...
Forum: Alternative Engines 06-15-2022, 05:17 PM
Replies: 42
Views: 4,906
Posted By rv6ejguy
Alternative Engines?

With Lycoming and other current aftermarket players seemingly unable to supply engine parts or engines in a timely fashion any more, it would appear to be a good time for someone new to step into the...
Forum: RV-10 06-15-2022, 07:41 AM
Replies: 40
Views: 3,633
Posted By rv6ejguy
Congrats Kyle! :)

Congrats Kyle! :)
Forum: RV-10 06-13-2022, 09:15 AM
Replies: 10
Views: 1,599
Posted By rv6ejguy
Agreed. Some folks are fine to fly over the rocks...

Agreed. Some folks are fine to fly over the rocks at night single engine with their family and a Lycoming up front- but not me.
Forum: RV-10 06-13-2022, 08:44 AM
Replies: 10
Views: 1,599
Posted By rv6ejguy
Stuart is a smart guy but as you say here, claims...

Stuart is a smart guy but as you say here, claims must be backed up by real world numbers and flight time. When you are charging $45K for a FWF package it's a great idea to build a company demo plane...
Forum: RV-10 06-13-2022, 07:07 AM
Replies: 10
Views: 1,599
Posted By rv6ejguy
As someone who's been flying an alt engine for 19...

As someone who's been flying an alt engine for 19 years and supplying advice and EFI systems for hundreds of them over the last 25 years, I wouldn't call myself a naysayer but I'm tired of folks...
Forum: RV-10 06-12-2022, 04:46 PM
Replies: 10
Views: 1,599
Posted By rv6ejguy
I measured the takeoff run at around 23 seconds...

I measured the takeoff run at around 23 seconds so it doesn't get off the runway quickly as stated in the video, in fact that's double what a good 540 powered -10 takes with 2 aboard and full...
Forum: Traditional vs. Alternative Powerplants 06-03-2022, 07:36 AM
Replies: 23
Views: 2,535
Posted By rv6ejguy
Knock frequency varies between engines so a...

Knock frequency varies between engines so a sensor optimized for one engine may not be ideal on a different engine.

Std Lyc heads don't have good places to mount knock sensors as they were never...
Forum: Traditional Aircraft Engines 06-01-2022, 08:42 AM
Replies: 36
Views: 9,344
Posted By rv6ejguy
Does anyone know if Shell is still pursuing UL...

Does anyone know if Shell is still pursuing UL Avgas? Not much info from them after 2013.

How about Lyondell? They filed a patent circa 2019 if I recall.
Forum: RV General Discussion/News 05-31-2022, 09:03 AM
Replies: 13
Views: 2,363
Posted By rv6ejguy
GAMI isn't the only potential vendor to complain...

GAMI isn't the only potential vendor to complain about how PAFI has been run by the FAA.

No telling what influences are at work here from the outside. The only thing we do know is that this has...
Forum: RV General Discussion/News 05-31-2022, 07:00 AM
Replies: 13
Views: 2,363
Posted By rv6ejguy
I saw a letter today from George Braly basically...

I saw a letter today from George Braly basically saying that it appears GAMI's G100UL unleaded avgas will not be FAA approved any time soon for fleet wide use, so don't hold your breath.

The letter...
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