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Search: Posts Made By: rv6ejguy
Forum: Fuel Injection Systems Yesterday, 03:53 PM
Replies: 35
Views: 9,013
Posted By rv6ejguy
Reno

Andy Findlay (SDS equipped Lancair) won the Sport Class race today at 392 mph.

Lee Ulrich qualified his RV-7 at 245 mph but his race was canceled today unfortunately.
Forum: RV General Discussion/News 09-17-2021, 08:05 PM
Replies: 119
Views: 16,024
Posted By rv6ejguy
Many are using VP or similar leaded race fuels,...

Many are using VP or similar leaded race fuels, several still 100LL though. Most forced induction stuff runs ADI to avoid detonation.
Forum: RV General Discussion/News 09-16-2021, 09:01 PM
Replies: 119
Views: 16,024
Posted By rv6ejguy
I am not getting what engines George is talking...

I am not getting what engines George is talking about when he refers to air cooled race engines, TBOs and unleaded avgas?

I assume race refers to stuff at Reno. Most of the turbo stuff in Sport...
Forum: Alternative Engines 09-14-2021, 12:17 PM
Replies: 771
Views: 193,571
Posted By rv6ejguy
I cruise at around 4200-4400 rpm. Ratio is 2.2 to...

I cruise at around 4200-4400 rpm. Ratio is 2.2 to 1. It's a 2 gear system but with a pinion inside a ring shaped output gear, both helical- fairly unique.

Never done an oil analysis. Nothing much on...
Forum: Alternative Engines 09-14-2021, 07:40 AM
Replies: 771
Views: 193,571
Posted By rv6ejguy
My Marcotte also uses 8 oz of synthetic gear oil...

My Marcotte also uses 8 oz of synthetic gear oil (bath type also) and temps never exceed 160F, so that amount of oil does the job with a good design.

Exact gear tooth profile and finish has a huge...
Forum: Alternative Engines 09-14-2021, 05:54 AM
Replies: 771
Views: 193,571
Posted By rv6ejguy
A 3 inch blast tube is huge for the gearbox. If...

A 3 inch blast tube is huge for the gearbox. If that doesn't keep it cool, it would indicate some pretty high losses in the gearset which should only be around 1-2% per mesh.

Less than ideal tooth...
Forum: RV General Discussion/News 09-12-2021, 09:13 PM
Replies: 119
Views: 16,024
Posted By rv6ejguy
Interesting info indeed and what some others had...

Interesting info indeed and what some others had alluded to before.

Appreciate your posts here.
Forum: RV General Discussion/News 09-11-2021, 09:35 PM
Replies: 119
Views: 16,024
Posted By rv6ejguy
A specification is by definition a set of...

A specification is by definition a set of technical requirements that something must meet. In this case many, based on multiple tests outlined by...
Forum: Traditional Aircraft Engines 09-11-2021, 04:11 PM
Replies: 283
Views: 67,719
Posted By rv6ejguy
Absolutely. They've lost hundreds of repeat and...

Absolutely. They've lost hundreds of repeat and new customers with this action. Their cost might have been around $5-8K per customer (wholesale parts and labor) to get these fixed ASAP. They could...
Forum: Traditional Aircraft Engines 09-11-2021, 03:59 PM
Replies: 283
Views: 67,719
Posted By rv6ejguy
As far as I know, the OEM or PMA suppliers cannot...

As far as I know, the OEM or PMA suppliers cannot change the process control spec on any part without first consulting the FAA.

On one of Lycoming's crank debacles in years past, they had changed...
Forum: RV General Discussion/News 09-11-2021, 09:34 AM
Replies: 119
Views: 16,024
Posted By rv6ejguy
Good info. I didn't realize the wide range of...

Good info. I didn't realize the wide range of specific gravity permitted and they actually don't list this in any references I found, only specify as per ASTM D 1298 and 4052.
Forum: RV General Discussion/News 09-10-2021, 08:10 PM
Replies: 119
Views: 16,024
Posted By rv6ejguy
I'll stay tuned, but are the fuel makers...

I'll stay tuned, but are the fuel makers committed to working inside PAFI? If nobody wants to play the game again, nothing will happen any time soon. As they say- Fool me once...

The email responses...
Forum: Canada 09-08-2021, 05:43 PM
Replies: 8
Views: 910
Posted By rv6ejguy
Yes, I'm well aware of that but some in the MDRA...

Yes, I'm well aware of that but some in the MDRA didn't seem to understand that and set their own criteria for inspection or felt they knew best.
Forum: Alternative Engines 09-04-2021, 05:31 PM
Replies: 37
Views: 3,994
Posted By rv6ejguy
A dual channel FADEC with redundant sensors would...

A dual channel FADEC with redundant sensors would likely be required in several countries to be approved for Experimental use.
Forum: RV General Discussion/News 09-04-2021, 08:28 AM
Replies: 119
Views: 16,024
Posted By rv6ejguy
Agree. No fuel is "drop in" if it weighs 4-7%...

Agree. No fuel is "drop in" if it weighs 4-7% more than 100LL.
Forum: Alternative Engines 09-04-2021, 08:25 AM
Replies: 37
Views: 3,994
Posted By rv6ejguy
The team developing this engine includes...

The team developing this engine includes engineers who have developed other successful gas turbine designs before.

They are not taking any money until the engine is proven.

They have had a running...
Forum: RV General Discussion/News 09-03-2021, 08:29 PM
Replies: 119
Views: 16,024
Posted By rv6ejguy
I am not aware that any of the original or...

I am not aware that any of the original or current formulations met the specific gravity spec. Did/ do any?
Forum: Fuel Injection Systems 09-03-2021, 08:05 AM
Replies: 35
Views: 9,013
Posted By rv6ejguy
Order backlog update

We continue to have unprecedented demand for SDS components and systems. Thank you to all for your orders.

This has now put us in a similar situation as Van's and some of the panel vendors...
Forum: Canada 09-01-2021, 07:56 PM
Replies: 8
Views: 910
Posted By rv6ejguy
Thanks to Les again for pursuing this to the...

Thanks to Les again for pursuing this to the apparent favorable end (again).

Hopefully MDRA finally gets the message that gascolators serve little useful purpose on EFI equipped aircraft. We've...
Forum: Traditional Aircraft Engines 08-29-2021, 12:15 PM
Replies: 5
Views: 384
Posted By rv6ejguy
I measured it at .250.

I measured it at .250.
Forum: RV General Discussion/News 08-28-2021, 07:46 AM
Replies: 119
Views: 16,024
Posted By rv6ejguy
It sounds like they were getting tired of the...

It sounds like they were getting tired of the whole thing when I emailed two of the participants and that the path forward was likely to continue to be slow.

It shouldn't take a decade plus to do...
Forum: Alternative Engines 08-27-2021, 08:35 AM
Replies: 21
Views: 6,667
Posted By rv6ejguy
I ask because this is important when you're...

I ask because this is important when you're laying out $50K+ on a new engine design. AC-Aero has never answered any questions about flight testing or even the ground testing program.

That's...
Forum: RV General Discussion/News 08-26-2021, 05:03 PM
Replies: 45
Views: 3,151
Posted By rv6ejguy
Collapse the bag to atmospheric pressure. Fill to...

Collapse the bag to atmospheric pressure. Fill to just short of capacity. Tie off and submerge the bag to find the volume. I've used this method for similar experiments before.
Forum: Alternative Engines 08-26-2021, 09:59 AM
Replies: 21
Views: 6,667
Posted By rv6ejguy
Did the rep give any indications of how many dyno...

Did the rep give any indications of how many dyno and flight hours to date on the engine or BSFC figures?
Forum: RV General Discussion/News 08-26-2021, 08:38 AM
Replies: 45
Views: 3,151
Posted By rv6ejguy
Flow it into a collapsed bag of known volume,...

Flow it into a collapsed bag of known volume, measure the time it takes.
Forum: Alternative Engines 08-24-2021, 08:47 PM
Replies: 16
Views: 2,080
Posted By rv6ejguy
Oh, that's a ways off still...

Oh, that's a ways off still...
Forum: RV-6/6A 08-24-2021, 12:12 PM
Replies: 23
Views: 1,684
Posted By rv6ejguy
I have a customer in Watsonville, CA with a 4.3....

I have a customer in Watsonville, CA with a 4.3. If you send me your email via PM, I'll try to put you in touch with him.
Forum: Alternative Engines 08-24-2021, 11:06 AM
Replies: 16
Views: 2,080
Posted By rv6ejguy
BMW makes some whizzy stuff these days- near...

BMW makes some whizzy stuff these days- near 700hp actual (claimed 617hp) on the new M5 in stock form on pump fuel.

I always fancied converting an M54 straight 6 as I own 3 of these currently. They...
Forum: Alternative Engines 08-24-2021, 07:49 AM
Replies: 16
Views: 2,080
Posted By rv6ejguy
This looks like a good candidate if you can find...

This looks like a good candidate if you can find a reliable ECU to run it and duplicate what the factory ECU does. Second, you'd want to develop a bearing housing to take the prop loads and possibly...
Forum: RV-6/6A 08-23-2021, 08:58 PM
Replies: 23
Views: 1,684
Posted By rv6ejguy
I've never hidden the fact that many auto...

I've never hidden the fact that many auto conversions haven't been successful for a variety of reasons but many that were well conceived by gear heads, machinists, fab guys or engineers have been...
Forum: RV General Discussion/News 08-23-2021, 08:09 PM
Replies: 119
Views: 16,024
Posted By rv6ejguy
I had not heard this part though someone from...

I had not heard this part though someone from Lyondell contacted me a couple years ago in search of an ignition system with programmable timing for a fuel research engine as part of their UL avgas...
Forum: RV-6/6A 08-23-2021, 05:23 PM
Replies: 23
Views: 1,684
Posted By rv6ejguy
Was attractively priced I'll wager. Resale value...

Was attractively priced I'll wager. Resale value is usually not good for the seller but is for the buyer.
Forum: RV-6/6A 08-23-2021, 05:22 PM
Replies: 23
Views: 1,684
Posted By rv6ejguy
But some of us have saved money going this route....

But some of us have saved money going this route. I've got dozens of auto engined customers who certainly fly for far less per hour than those who plunked down big coin for a Lyc off the bat....
Forum: RV General Discussion/News 08-23-2021, 05:15 PM
Replies: 32
Views: 2,889
Posted By rv6ejguy
I have plenty of customers flying at 14-17K with...

I have plenty of customers flying at 14-17K with cannula O2. Pretty comfortable. If you want to do a long leg and catch a good tailwind, that can be a good option. The bigger engine gets you up there...
Forum: RV-6/6A 08-23-2021, 12:03 PM
Replies: 23
Views: 1,684
Posted By rv6ejguy
Some folks need to understand that some others...

Some folks need to understand that some others have no interest in following the herd with regards to the recommended engines.

Wankels, Subes, ULs, Contis, auto V6s, V8s, turbines, Adepts, diesels...
Forum: RV General Discussion/News 08-23-2021, 08:06 AM
Replies: 32
Views: 2,889
Posted By rv6ejguy
I say the -10 also performs best in that 14-17K...

I say the -10 also performs best in that 14-17K range as Greg found with the -9.

The bigger engine can always be run at lower rpm with a C/S prop and you get lower frictional losses and better BSFC...
Forum: RV General Discussion/News 08-23-2021, 05:54 AM
Replies: 32
Views: 2,889
Posted By rv6ejguy
I agree with Bob. Better efficiency is found...

I agree with Bob. Better efficiency is found going higher than 8000 feet. We've done a fair amount of testing up to 20,000 feet on the RV-10. Does some amazing numbers up high if you have O2.
Forum: RV-6/6A 08-22-2021, 07:56 PM
Replies: 23
Views: 1,684
Posted By rv6ejguy
I've talked to a couple who just fly them. Sadly,...

I've talked to a couple who just fly them. Sadly, they don't post here as they usually get slammed by someone who thinks they should have installed a Lycoming instead...
Forum: RV General Discussion/News 08-22-2021, 12:46 PM
Replies: 119
Views: 16,024
Posted By rv6ejguy
Swift has had a STC for their 94UL for quite a...

Swift has had a STC for their 94UL for quite a while now applying to about 2/3rds of the US GA fleet. 94UL could be used on most RVs since these have the same engines. The problem right now is lack...
Forum: RV General Discussion/News 08-21-2021, 03:38 PM
Replies: 119
Views: 16,024
Posted By rv6ejguy
Lots of folks here on VAF have been burning lousy...

Lots of folks here on VAF have been burning lousy Mogas in their Lycs for years with no apparent ill effect. Yes, you have to watch the timing at high MAP and the CHTs to do it successfully, but...
Forum: RV Ongoing Maintenance Issues 08-21-2021, 03:27 PM
Replies: 12
Views: 606
Posted By rv6ejguy
Be careful what happens to silicone hoses when it...

Be careful what happens to silicone hoses when it sees a bunch of gasoline. Might be ok on injected engines but probably not with a carb.
Forum: Fuel Injection Systems 08-15-2021, 01:52 PM
Replies: 35
Views: 9,013
Posted By rv6ejguy
They are a bit shallow but probably ok for screws...

They are a bit shallow but probably ok for screws and AN3 hardware Great conversation piece.:)
Forum: Fuel Injection Systems 08-15-2021, 12:03 PM
Replies: 35
Views: 9,013
Posted By rv6ejguy
I Messed Up

We came out with some lightweight billet rocker covers for angle valve Lycomings a few years back. Two IO-390 users have now seen cracking on the outside around the central rocker shaft capture,...
Forum: Alternative Engines 08-12-2021, 05:10 AM
Replies: 91
Views: 15,200
Posted By rv6ejguy
We have a customer fitting our EFI to the same...

We have a customer fitting our EFI to the same engine for a Corsair replica. He's done a nice job mating injector bosses into the induction tubes but a ton of work.
Forum: Fuel Injection Systems 08-12-2021, 05:08 AM
Replies: 112
Views: 29,289
Posted By rv6ejguy
Yes, that is the plan.

Yes, that is the plan.
Forum: Fuel Injection Systems 08-11-2021, 11:18 AM
Replies: 112
Views: 29,289
Posted By rv6ejguy
We've missed the release date about 4 times now...

We've missed the release date about 4 times now so I guess those are pointless now. I never anticipated business would triple over the last 3 years which has delayed this project considerably.

The...
Forum: Fuel Injection Systems 08-10-2021, 08:03 PM
Replies: 35
Views: 9,013
Posted By rv6ejguy
Thanks

A belated thanks to all the customers, friends and business folks who promoted SDS products at Osh this year. We really appreciate it.

Next big event is Reno in Sept. which I unfortunately won't be...
Forum: Alternative Engines 08-08-2021, 09:44 PM
Replies: 44
Views: 3,632
Posted By rv6ejguy
Ok, I watched BOTH videos fully this time instead...

Ok, I watched BOTH videos fully this time instead of just the first minute of the 2nd one. My apologies, I didn't see that you were only using only one rotor per side so I WAS missing something very...
Forum: Alternative Engines 08-08-2021, 11:46 AM
Replies: 44
Views: 3,632
Posted By rv6ejguy
Is your intention to make this as a one-off for...

Is your intention to make this as a one-off for personal use or to eventually offer these as an alternative engine package?

On the weight aspect, perhaps I'm missing something fundamental here. A...
Forum: Alternative Engines 08-08-2021, 06:54 AM
Replies: 44
Views: 3,632
Posted By rv6ejguy
I've observed several 13B installations using...

I've observed several 13B installations using Mazda factory housings and parts. The engines with intake and exhaust (primary piping only) weighed somewhere around 200 pounds without the gearbox,...
Forum: Alternative Engines 08-05-2021, 07:47 PM
Replies: 44
Views: 3,632
Posted By rv6ejguy
Interesting concepts. I would say the biggest...

Interesting concepts. I would say the biggest concern will be weight. This will have to weigh well in excess of 400 pounds so not very easy to put in an -8.

Second concern might be about torsional...
Forum: RV General Discussion/News 08-01-2021, 10:07 AM
Replies: 11
Views: 1,998
Posted By rv6ejguy
Big congrats Darwin!

Big congrats Darwin!
Forum: RV General Discussion/News 07-30-2021, 10:19 AM
Replies: 119
Views: 16,024
Posted By rv6ejguy
I had read somewhere that most of the FAA...

I had read somewhere that most of the FAA concerns seemed to be about specific gravity and other factors about the Swift and GAMI fuels. Both had passed detonation testing on turbocharged engines at...
Forum: RV General Discussion/News 07-29-2021, 08:24 PM
Replies: 119
Views: 16,024
Posted By rv6ejguy
On 9 to 1 PV engines, you can reduce timing to...

On 9 to 1 PV engines, you can reduce timing to around 20 deg at high MAP, say above 25 inches. This seems to be pretty safe on 91 mogas and will lower the CHTs in the climb with minimal loss of...
Forum: RV General Discussion/News 07-29-2021, 04:40 PM
Replies: 119
Views: 16,024
Posted By rv6ejguy
As stated in the AOPA article, It seems GAMI...

As stated in the AOPA article, It seems GAMI already has many test cell hours running on a turbo Lycoming. If I read the article right, they are hoping with a bunch of real world experience with the...
Forum: RV General Discussion/News 07-29-2021, 06:48 AM
Replies: 119
Views: 16,024
Posted By rv6ejguy
It's an important first step to get the ball...

It's an important first step to get the ball rolling. Now it may be a battle between Swift and GAMI formulations and who can produce and distribute enough of it.
Forum: RV Friends Who Have Passed On 07-29-2021, 05:32 AM
Replies: 5
Views: 849
Posted By rv6ejguy
Sad to lose the man and his huge knowledge base. ...

Sad to lose the man and his huge knowledge base. He educated a lot of pilots with his writings, including me.
Forum: RV General Discussion/News 07-28-2021, 08:09 PM
Replies: 119
Views: 16,024
Posted By rv6ejguy
Good news. Looks like Swift and GAMI are both...

Good news. Looks like Swift and GAMI are both going the STC route initially at least.
Forum: RV General Discussion/News 07-27-2021, 09:03 PM
Replies: 119
Views: 16,024
Posted By rv6ejguy
This is why I think it will be going the STC...

This is why I think it will be going the STC route initially. It will be a gradual phase in as more planes get the paperwork. Swift is already selling their STC for $100 for lots of certified models...
Forum: Fuel Injection Systems 07-27-2021, 10:15 AM
Replies: 35
Views: 9,013
Posted By rv6ejguy
Cup Race

Dave Anders took top spot in RV Gold at 241.25 mph. :)
Forum: RV General Discussion/News 07-27-2021, 09:11 AM
Replies: 102
Views: 49,198
Posted By rv6ejguy
George, lots of Corvairs flying and they work...

George, lots of Corvairs flying and they work well. The conversion process has been refined for a couple decades now and is well understood.

The engines are quite robust at the 110-120hp level. I've...
Forum: Fuel Injection Systems 07-25-2021, 08:24 AM
Replies: 35
Views: 9,013
Posted By rv6ejguy
Marvin's RV-14 is parked in HBC, row 314 for...

Marvin's RV-14 is parked in HBC, row 314 for those interested. N829MS.

Les Kearney's RV-10 is in row 345. C-GROK. I have Les' number if you want to meet up.

Kyle Fowler will be performing in his...
Forum: Propellers 07-23-2021, 09:17 PM
Replies: 27
Views: 3,472
Posted By rv6ejguy
Let us know what you see for performance...

Let us know what you see for performance gain/loss.
Forum: RV General Discussion/News 07-23-2021, 09:00 PM
Replies: 119
Views: 16,024
Posted By rv6ejguy
An interesting tidbit published in late 2019:...

An interesting tidbit published in late 2019:

"Swift Fuel’s Unleaded UL94 Avgas is sold nationwide - priced competitively with 100LL and is expected to remain low subject to oil market volatility....
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