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Search: Posts Made By: rv6ejguy
Forum: Fuel Injection Systems 10-21-2021, 08:29 AM
Replies: 43
Views: 10,997
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, 01:01 PM
Replies: 43
Views: 10,997
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, 09:17 PM
Replies: 43
Views: 10,997
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, 10:44 AM
Replies: 43
Views: 10,997
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, 08:42 AM
Replies: 43
Views: 10,997
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, 05:48 AM
Replies: 30
Views: 2,694
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, 09:34 PM
Replies: 30
Views: 2,694
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, 12:30 PM
Replies: 30
Views: 2,694
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, 05:43 AM
Replies: 29
Views: 1,982
Posted By rv6ejguy
Yup. Agreed.

Yup. Agreed.
Forum: RV Building Tips/Techniques 10-12-2021, 05:39 AM
Replies: 30
Views: 2,694
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, 06:55 AM
Replies: 29
Views: 1,982
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...
Forum: RV General Discussion/News 10-08-2021, 06:39 AM
Replies: 27
Views: 3,155
Posted By rv6ejguy
Sad to see you sell your beautiful 8 but...

Sad to see you sell your beautiful 8 but hopefully new adventures await in your new digs.
Forum: RV Building Tips/Techniques 10-07-2021, 10:54 PM
Replies: 30
Views: 2,694
Posted By rv6ejguy
16869 Here's a photo from Flightlines of an...

16869

Here's a photo from Flightlines of an RV-14 wing root setup.
Forum: Electronic Ignition Systems 10-07-2021, 08:47 AM
Replies: 29
Views: 1,982
Posted By rv6ejguy
Dan makes a couple important points here. Many...

Dan makes a couple important points here.

Many CDI systems simply use whatever coil is convenient and inexpensive. Most coils are not designed for use with CDIs as the vast majority of OEM...
Forum: Fuel Injection Systems 10-05-2021, 12:06 PM
Replies: 18
Views: 1,424
Posted By rv6ejguy
It will be interesting to see how this works out...

It will be interesting to see how this works out with direct injection.
Forum: Electronic Ignition Systems 10-05-2021, 07:24 AM
Replies: 29
Views: 1,982
Posted By rv6ejguy
Both work fine in racing and both will light off...

Both work fine in racing and both will light off a stock Lycoming with no problems. Some coils designed to have 14V on the primary windings may not take kindly to having 400V put on them.

Lots of...
Forum: Fuel Injection Systems 10-04-2021, 12:19 PM
Replies: 18
Views: 1,424
Posted By rv6ejguy
In the EFI systems we are talking about here,...

In the EFI systems we are talking about here, fuel pressure is held at a constant differential above MAP by varying the return fuel volume at the regulator. The pumps put out a constant volume at X...
Forum: Fuel Injection Systems 10-03-2021, 12:11 PM
Replies: 18
Views: 1,424
Posted By rv6ejguy
I ran a system as depicted in the graphic for...

I ran a system as depicted in the graphic for about 10 years, worked fine but was heavier and more complicated than required.

These days, we usually dispense with the header tank and low pressure...
Forum: Fuel Injection Systems 10-01-2021, 11:58 AM
Replies: 19
Views: 1,160
Posted By rv6ejguy
We don't see any hot start issues dead heading to...

We don't see any hot start issues dead heading to the injectors as the high fuel pressure on EFI generally raises the boiling point of the fuel enough so that it doesn't.

Dave Anders did some hot...
Forum: Fuel Injection Systems 10-01-2021, 05:47 AM
Replies: 19
Views: 1,160
Posted By rv6ejguy
Correct, correct and correct in the case of the...

Correct, correct and correct in the case of the electric pump setup. With a gear pump, maybe not without external check valves fitted.

The flying mechanical pumps are mostly on Contis to my...
Forum: Fuel Injection Systems 09-30-2021, 12:25 PM
Replies: 19
Views: 1,160
Posted By rv6ejguy
To start, the injectors need very little fuel...

To start, the injectors need very little fuel volume, the regulator orifice is closed or mostly so. Fuel pressure easily builds up to the required 50psi or so as you crank. It's been done as I...
Forum: Fuel Injection Systems 09-30-2021, 08:26 AM
Replies: 19
Views: 1,160
Posted By rv6ejguy
Lots of good points brought up here. At least...

Lots of good points brought up here.

At least one of the EFI Sport Class winners has used an engine driven pump since day one. Can and has been done.

Some high hp (1500+hp) EFI race cars use...
Forum: Fuel Injection Systems 09-30-2021, 05:47 AM
Replies: 19
Views: 1,160
Posted By rv6ejguy
A gear or gerotor pump driven off an accessory...

A gear or gerotor pump driven off an accessory pad could work, easy to develop the 50ish psi needed for EFI.

The twin electric pumps have proven to be reliable. Never had a report of both failing on...
Forum: RV General Discussion/News 09-29-2021, 08:53 PM
Replies: 16
Views: 2,084
Posted By rv6ejguy
Lots of long, critical fasteners in modern...

Lots of long, critical fasteners in modern automotive engines (like head bolts) are torqued to a low value to seat and then turned 1/2 to 1 1/2 turns further rather than using ultimate torque. This...
Forum: Electronic Ignition Systems 09-28-2021, 08:39 PM
Replies: 11
Views: 1,252
Posted By rv6ejguy
Yup. Split type. Locktite is your friend here too.

Yup. Split type. Locktite is your friend here too.
Forum: Electronic Ignition Systems 09-28-2021, 04:45 PM
Replies: 11
Views: 1,252
Posted By rv6ejguy
Yup 243 Locktite if you're concerned. Hundreds of...

Yup 243 Locktite if you're concerned. Hundreds of thousands of hours on these. Nobody has reported any coming loose so far.
Forum: Traditional Aircraft Engines 09-19-2021, 10:06 PM
Replies: 56
Views: 16,196
Posted By rv6ejguy
Maybe in the lower echelon of Sport Class but not...

Maybe in the lower echelon of Sport Class but not at the top. None of the aircraft which have done over 400 mph laps in Sport have used nitrous to my knowledge.
Forum: Fuel Injection Systems 09-18-2021, 03:53 PM
Replies: 43
Views: 10,997
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: 18,296
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: 18,296
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: 200,378
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: 200,378
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: 200,378
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: 18,296
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: 18,296
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: 304
Views: 73,224
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: 304
Views: 73,224
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: 18,296
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: 18,296
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: 18
Views: 2,086
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: 5,157
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: 18,296
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: 5,157
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: 18,296
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: 43
Views: 10,997
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: 18
Views: 2,086
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: 581
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: 18,296
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: 7,268
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: 4,160
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: 7,268
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: 4,160
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: 2,819
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: 2,066
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: 2,819
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: 2,819
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: 2,066
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: 18,296
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: 2,066
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: 2,066
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: 3,763
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: 2,066
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: 3,763
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: 3,763
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.
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