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Search: Posts Made By: Don at Airflow
Forum: Traditional Aircraft Engines 12-28-2016, 05:06 PM
Replies: 2
Views: 1,155
Posted By Don at Airflow
injector nozzles

Cannot vouch for Lycoming, or Precision

"To install the nozzle body; remove the restrictor and apply a small amount of anti-seize compound to the pipe threads on the body. Install the nozzle with a...
Forum: RV General Discussion/News 09-22-2016, 06:44 AM
Replies: 6
Views: 1,153
Posted By Don at Airflow
Actually according to Lycoming calibration...

Actually according to Lycoming calibration specs., an IO-320 (160 HP) at rated power uses 75 to 76 PPH fuel flow that's about 12.5 GPH. Before you cover up a high CHT condition by dumping fuel at...
Forum: RV-10 09-22-2016, 06:26 AM
Replies: 12
Views: 2,260
Posted By Don at Airflow
You can also connect the filter directly to the...

You can also connect the filter directly to the inlet manifold thus eliminating the tube connection.
Forum: RV-8/8A 09-21-2016, 07:25 PM
Replies: 2
Views: 873
Posted By Don at Airflow
Nozzle lines

Yes you can typically bend them by hand. If you have a fairly tight bend say near the injector nozzle use a 1" socket to bend the line around, unless you have a small 1/8" tube bender which works...
Forum: Fuel Injection Systems 08-15-2016, 10:52 AM
Replies: 11
Views: 2,607
Posted By Don at Airflow
Airflow Web Site.

Thanks for the replies. Cannot give answers as to why the site loads slow or it is blocked. I just checked it from the VAF link and it loaded right up. I had one person tell me it was a malicious...
Forum: Fuel Injection Systems 08-11-2016, 06:33 AM
Replies: 11
Views: 2,607
Posted By Don at Airflow
Thumbs up NEW WEB SITE

After a year of hard work Kyle has pretty much self-taught himself how to build a web site. He also installed a web store that is now operational. This should make your on-line shopping easier. ...
Forum: Fuel Injection Systems 08-08-2016, 07:41 AM
Replies: 146
Views: 44,694
Posted By Don at Airflow
Not to hijack the EFI glory, but here is a set of...

Not to hijack the EFI glory, but here is a set of flight test data on a IO-340. While this customer was not looking for flying high LOP he was interested in going fast WOT low altitude. A box stock...
Forum: Fuel Injection Systems 07-18-2016, 07:20 PM
Replies: 1
Views: 1,518
Posted By Don at Airflow
FI RV-320 the rest of the story

PERFORMANCE
The FM-150L was calibrated using the standard calibration for a Lycoming 180 HP engine. Injector nozzle sizes were the same for each cylinder. After initial run up and idle mixture...
Forum: Fuel Injection Systems 07-18-2016, 07:18 PM
Replies: 1
Views: 1,518
Posted By Don at Airflow
FI in a RV-320

A while ago I made comments about a project we were working on to install fuel injection on a RV using the smaller 320 cowl and not having to modify the cowl to make it fit. Well after mush work and...
Forum: RV-10 06-02-2016, 12:19 PM
Replies: 35
Views: 3,689
Posted By Don at Airflow
Purge valve

You probably have an FM-200 if the engine is a 360 or 540. If so it is recommended to use the purge valve for starting and stopping the engine. Since the mixture control in these fuel controls uses...
Forum: Traditional Aircraft Engines 03-30-2016, 02:04 PM
Replies: 35
Views: 8,614
Posted By Don at Airflow
Hot idle performance

From the aircraft that customers bring to our facility for rough idle performance, 90% of the time we find the installation is the culprit. Thatís not to say that there is an issue with part of the...
Forum: RV General Discussion/News 03-02-2016, 05:43 PM
Replies: 13
Views: 1,845
Posted By Don at Airflow
Flow meter location

Why is there this instance on locating the fuel flow meter on the suction side of the engine pump?
Forum: Fuel Injection Systems 02-21-2016, 05:43 PM
Replies: 3
Views: 1,030
Posted By Don at Airflow
Perhaps if you install the fuel flow transducer...

Perhaps if you install the fuel flow transducer in the metered fuel line the fluctuations will be eliminated. Putting the flow meter on the suction side of the engine fuel pump introduces a pressure...
Forum: Traditional Aircraft Engines 02-21-2016, 03:47 PM
Replies: 7
Views: 1,786
Posted By Don at Airflow
You can purchase nozzle line material and cones...

You can purchase nozzle line material and cones to make your own lines. I suppose the old cones could be used but from our experience the time spent getting the cone fitting clean and then not...
Forum: Traditional Aircraft Engines 02-21-2016, 01:15 PM
Replies: 7
Views: 1,786
Posted By Don at Airflow
In operation it makes no difference if a standard...

In operation it makes no difference if a standard injector nozzle, (mine, Bendix or Precision) is installed in the normal top of cylinder head location or the primer port location. The possible...
Forum: RV General Discussion/News 02-02-2016, 07:19 PM
Replies: 117
Views: 26,696
Posted By Don at Airflow
The division of flow between the injector nozzles...

The division of flow between the injector nozzles with the interaction of the flow divider for this installation goes like this:

Cyl #1 16.8%, Cyl #2 17.5%, cyl #3 16.1%, cyl #4 16.1%, cyl #5 16.8%,...
Forum: RV General Discussion/News 02-02-2016, 03:03 PM
Replies: 117
Views: 26,696
Posted By Don at Airflow
Up draft 540 sump

[QUOTE=rv6ejguy;1049145]Here's what we're up against with typical vertical induction Lycomings:

http://i1105.photobucket.com/albums/h341/rv6ejguy/540sump_zpsm7dxhs5t.jpg

Bad pairings, unequal...
Forum: Fuel Injection Systems 02-02-2016, 06:41 AM
Replies: 5
Views: 1,014
Posted By Don at Airflow
FI 101 Class

Just a reminder, the next FI 101 class will be March 4-6, 2016. This will be at our facility at KSPA. Donít miss out on the learning and great food. Contact colleen@airflowperformance.com if you...
Forum: RV General Discussion/News 01-29-2016, 01:31 PM
Replies: 117
Views: 26,696
Posted By Don at Airflow
Not magic, just facts

Of course that intake manifold was designed for a carburetor to be wet flowed. But even then, the most we see on most RV-10ís running that sump with our fuel injection (or Precision) is 1.5 to 2.5%...
Forum: Fuel Injection Systems 01-16-2016, 08:11 AM
Replies: 12
Views: 3,731
Posted By Don at Airflow
Bosch CIS and RSA injection systems

You do not understand the principle of operation of the RSA injection system, thus my comment on the first reply. In reality we have operated RSA and our fuel injection systems up to 150 PSI inlet...
Forum: Fuel Injection Systems 01-14-2016, 05:55 AM
Replies: 12
Views: 2,818
Posted By Don at Airflow
Email me a don@airflowperformance.com and I can...

Email me a don@airflowperformance.com and I can send you pictures. You running a front sump or up draft sump?
Forum: Fuel Injection Systems 01-13-2016, 06:58 PM
Replies: 12
Views: 2,818
Posted By Don at Airflow
Flow Meter Transducer Location

Perhaps if you re-locate the flow meter to the correct location between the fuel servo and the flow divider your incorrect flow meter readings will be correct boost pump on or off.

Don
Forum: Fuel Injection Systems 01-12-2016, 06:39 AM
Replies: 12
Views: 3,731
Posted By Don at Airflow
Yes the Bosch CIS injection is a completely...

Yes the Bosch CIS injection is a completely different type of metering system. It has it's draw backs too. The basic theory is the CIS system keeps the pressure drop constant across a variable...
Forum: Fuel Injection Systems 01-09-2016, 01:43 PM
Replies: 12
Views: 3,731
Posted By Don at Airflow
fuel injection system design

Injector nozzles are fixed orifice air bled nozzles. Most 4 cylinder Lycomingís use a diaphragm fuel pump for the engine driven pump which gives you a operating pressure of 22-26 PSIG inlet fuel...
Forum: Fuel Injection Systems 01-08-2016, 12:32 PM
Replies: 12
Views: 3,731
Posted By Don at Airflow
PS-5 operating pressure

Actually itís not an odd ball pump pressure. Back in the day of GO-435, 480ís, E-185 and E 225ís PS-5ís were the main stay. There were a lot of engine driven diaphragm or vane pumps and Airborne...
Forum: Fuel Injection Systems 01-08-2016, 10:58 AM
Replies: 12
Views: 3,731
Posted By Don at Airflow
Bendix fuel injection operation

TIM2542 ďSo boosting pressure beyond what's needed can't be done without flooding the engineĒ That would be a Continental fuel injection system, not Bendix or Airflow. So perhaps you should...
Forum: RV General Discussion/News 10-26-2015, 06:41 PM
Replies: 117
Views: 26,696
Posted By Don at Airflow
Another data point. Up draft sump, not to bad.

Here is another data point.

We are currently developing a fuel injection kit that will fit in the stock Vanís 320 cowling without modifying the cowling. Our test bed was an RV-6 with a Titan 340...
Forum: Fuel Injection Systems 09-29-2015, 08:31 AM
Replies: 0
Views: 1,282
Posted By Don at Airflow
FI 101 Class

Just got this from the ďBig BossĒ desk:

Good Morning Everyone,

FIC-101 Class
Location: KSPA
Cost is $325.00 (includes meals)
Starting Friday late afternoon on November 6th
Ending Sunday around 1...
Forum: Electronic Ignition Systems 09-25-2015, 07:09 AM
Replies: 10
Views: 3,099
Posted By Don at Airflow
Peak EGT should be around .065 F/A (15.4 : 1...

Peak EGT should be around .065 F/A (15.4 : 1 A/F).

I had some flakey O2 reading from a similar system installed on a turbo Rotax project we were involved with. Couldnít really trust the O2...
Forum: Electronic Ignition Systems 09-24-2015, 01:52 PM
Replies: 10
Views: 3,099
Posted By Don at Airflow
F/A

You should be running around 200 rich of peat at 24 square and 3500 ft. That's about a .085 (11.8 : 1 A/F for you car guys). If your running richer than that at full rich, then either your air...
Forum: RV General Discussion/News 08-10-2015, 07:33 AM
Replies: 5
Views: 1,103
Posted By Don at Airflow
P/N 2090255

The aux pump we have been building for the last two years does not require the return loop. The connection on the pump is a simple in and out. Plus our pump P/N 2090255 is $390.00.

Don
Forum: Fuel Injection Systems 08-03-2015, 06:54 AM
Replies: 5
Views: 2,653
Posted By Don at Airflow
Will an RSA-5AD1 that is calibrated for a 200HP...

Will an RSA-5AD1 that is calibrated for a 200HP motor (like an angle valve IO-360) work OK on a 180HP motor (like a parallel valve O-360) without being recalibrated?

Yes
Forum: Traditional Aircraft Engines 07-15-2015, 07:03 AM
Replies: 16
Views: 3,579
Posted By Don at Airflow
fuel boiling?

Without knowing what model of fuel injection is on the engine or the installation you might want to give us a call to discuss your options.

We have two different regulator systems. One uses the...
Forum: RV-10 07-10-2015, 10:53 AM
Replies: 15
Views: 3,332
Posted By Don at Airflow
A complex calculation

To understand why we choose what size nozzles orifice or how we manufacture our injector nozzles is a discussion left for our FI-101 class. You have to understand the theory of operation of the fuel...
Forum: RV-10 07-10-2015, 06:50 AM
Replies: 15
Views: 3,332
Posted By Don at Airflow
Nozzle set

On this installation the injector sizes ended up .0245 on cylinder 1, 3, & 4. .025 on cylinder 2 and .0255 on 5 & 6. That got the total spread to within 0.1 GPH or so. Couldn't really tell with...
Forum: RV General Discussion/News 06-22-2015, 05:03 PM
Replies: 117
Views: 24,967
Posted By Don at Airflow
There will be a change in the absolute EGT number...

There will be a change in the absolute EGT number for a given CR at the same F/A, but the delta change from peak to a given F/A will be the same regardless of CR. Itís a chemistry thing.

I like...
Forum: RV General Discussion/News 05-11-2015, 09:54 AM
Replies: 5
Views: 918
Posted By Don at Airflow
Fuel injection overhauls

We are an FAA Repair Station that overhauls Bendix / Precision fuel injection systems and components. We also overhaul Lear/Romec fuel pumps.

As well as our own design experimental fuel injection...
Forum: Fuel Injection Systems 04-13-2015, 03:23 PM
Replies: 9
Views: 3,102
Posted By Don at Airflow
Cable routing

There's lots of different ways to do this. We have different offset and length levers if that would help too. If you need additional pictures of this type of install, email me at...
Forum: Fuel Injection Systems 03-19-2015, 10:23 AM
Replies: 13
Views: 3,137
Posted By Don at Airflow
Fuel/Air Stoichiometry vs Peak EGT?

Remember from the 100% of the BTUís that the fuel makes, you are only going to get about 30% of that energy that actually makes HP. From studies done at Lycoming .065 is around peak EGT. I believe...
Forum: Fuel Injection Systems 03-18-2015, 07:46 AM
Replies: 1
Views: 1,299
Posted By Don at Airflow
April Kit Planes article

I am writing this in response to the article that was written in the April 2015 Issue of Kit Planes

First off, I was contacted by Amy Laboda at Kit Planes either in September or October last year,...
Forum: Fuel Injection Systems 02-12-2015, 12:05 PM
Replies: 9
Views: 1,815
Posted By Don at Airflow
FI 101 class

It's would be hard for you to run a flow bench and operate the air box over the internet. This is an interactive class. I do not think the participant would get the benefit from watching a...
Forum: Fuel Injection Systems 02-12-2015, 09:55 AM
Replies: 1
Views: 1,299
Posted By Don at Airflow
Exclamation Auxiliary Air Box Retention SB

We have a new service bulletin for auxiliary retention of the air box on up draft sump installations.

This service bulletin is NON-Mandatory and can be complied with at the ownerís discretion.

This...
Forum: Fuel Injection Systems 02-12-2015, 09:52 AM
Replies: 9
Views: 1,815
Posted By Don at Airflow
FI 101 Class

Hey folks, we're 2 weeks out from our March 6-7 class. We still have a few seats left, so if your interested give Colleen an email at colleen@airflowperformance.com. Time to plan the food menu.

Don
Forum: Fuel Injection Systems 01-29-2015, 07:03 PM
Replies: 9
Views: 1,815
Posted By Don at Airflow
FI 101 class

We typically have the class the first weekend in March and first weekend in November. Usually summer is tied up with family vacations, flying and so forth. We can certainly schedule a class any...
Forum: Fuel Injection Systems 01-29-2015, 06:34 AM
Replies: 9
Views: 1,815
Posted By Don at Airflow
FI 101 Class

Itís time to get into learning mode again. Due to the success of the 2014 FI 101 classes we are contemplating having one on March 6-8, 2015. We need to make a decision in a couple of weeks so any...
Forum: Fuel Injection Systems 12-09-2014, 10:33 AM
Replies: 14
Views: 5,424
Posted By Don at Airflow
Lycoming N2O

Been there, done that (lots of times). Works good if done correctly.

Learned from one of the best in Arizona.

http://i1284.photobucket.com/albums/a563/1954djr/P5100010_zps7aa1d722.jpg[/URL]

This...
Forum: RV-10 12-03-2014, 06:56 PM
Replies: 25
Views: 5,745
Posted By Don at Airflow
Pump flow specs.

If you want pump flow specs, on our pump and others You can email me at don@airflowperformance.com and I can send you the data. Only the facts.

Don
Forum: RV General Discussion/News 11-10-2014, 10:31 AM
Replies: 3
Views: 1,930
Posted By Don at Airflow
Airflow Performance Aux Pump

May not fit exactly but their always in stock in South Carolina USA. $390.00http://i1284.photobucket.com/albums/a563/1954djr/150ab49c-f9ef-4df9-a64a-9fb08d561c2a_zps71723f5a.jpg...
Forum: Fuel Injection Systems 10-15-2014, 02:54 PM
Replies: 3
Views: 1,161
Posted By Don at Airflow
FI-101 Class

the FI 101 class is at our shop located at the west end of Spartanburg Downtown Airport KSPA.

Don
Forum: Fuel Injection Systems 10-14-2014, 06:40 PM
Replies: 3
Views: 1,161
Posted By Don at Airflow
FI 101 Class

We have two seats open for the fall class. That's November 7-9, 2014. If your interested, contact colleen@airflowperformance.com.

Thanks


Don
Forum: Traditional Aircraft Engines 09-10-2014, 11:01 AM
Replies: 18
Views: 3,093
Posted By Don at Airflow
Idle fuel flow

Start with .006 throttle opening, idle fuel flow to 1.2 GPH.

Then tune from that point as required.
Forum: RV-10 07-18-2014, 05:13 PM
Replies: 4
Views: 1,203
Posted By Don at Airflow
Aux pump

If you have the P/N 2090255 aux. pump then there is no return line. The pump bypass and pressure relief valve are now integrated into one part. So there is just a simple inlet and outlet connection...
Forum: RV General Discussion/News 06-27-2014, 10:17 AM
Replies: 93
Views: 10,350
Posted By Don at Airflow
Our prayers go out to you and your family. I...

Our prayers go out to you and your family. I have a really good friend, he's like my adopted father, going through the same thing.
Forum: Traditional Aircraft Engines 05-15-2014, 03:37 PM
Replies: 3
Views: 1,935
Posted By Don at Airflow
Idle mixture

You have the idle mixture adjusted all the way to the rich side. If the throttle plate is less than .006 open when on the throttle stop then you probably have a intake leak.
Forum: RV General Discussion/News 03-28-2014, 05:37 AM
Replies: 87
Views: 14,609
Posted By Don at Airflow
David, Maybe you and you associates need to...

David,

Maybe you and you associates need to purchase all your new and overhauled fuel controls from Airflow Performance.:)

I see an opportunity in your area.
Forum: RV General Discussion/News 03-27-2014, 06:19 PM
Replies: 87
Views: 14,609
Posted By Don at Airflow
Iím assuming you are re-setting these units for...

Iím assuming you are re-setting these units for experimental use. In that realm you can do pretty much what you want. We even calibrate RSA-5ís to run ethanol for some RV group in South Dakota. ...
Forum: Traditional Aircraft Engines 03-26-2014, 06:12 AM
Replies: 13
Views: 2,630
Posted By Don at Airflow
No tank return for Airflow Performance

Airflow Performance fuel injection systems do not require a return to the tank. If a purge valve is used, the return is plumbed to one of the tank feed lines before the selector valve. If the...
Forum: Traditional Aircraft Engines 03-25-2014, 07:04 AM
Replies: 14
Views: 2,933
Posted By Don at Airflow
Might be the flow divider. At idle the flow...

Might be the flow divider. At idle the flow divider divides the fuel to each nozzle. At fuel flows above 8 GPH the flow divider is wide open and the nozzles divide the flow.

Check for the intake...
Forum: RV General Discussion/News 03-23-2014, 07:08 PM
Replies: 87
Views: 14,609
Posted By Don at Airflow
To clarify post 81. The fuel flow limits I have...

To clarify post 81. The fuel flow limits I have been referencing are for ďstockĒ compression and magneto ignition. I havenít seen fuel flow limits for modified engines. In that case we do as the...
Forum: RV General Discussion/News 03-23-2014, 02:12 PM
Replies: 87
Views: 14,609
Posted By Don at Airflow
Fuel Flow Limits

All Iím saying is that the fuel flow limits established by Lycoming that are to be used when calibrating RSA servos are +/- 2%. That puts the fuel air ratio at .086 to .089 for most of the 4...
Forum: RV General Discussion/News 03-21-2014, 07:43 PM
Replies: 87
Views: 14,609
Posted By Don at Airflow
It's all about fuel air ratio

The origin of this thread was what fuel flow should be seen with an IO-360M1B, constant speed prop and Precision fuel injection. And the answer is, there is no correct answer because the fuel flow...
Forum: Fuel Injection Systems 01-30-2014, 04:55 PM
Replies: 18
Views: 8,233
Posted By Don at Airflow
Can you show a picture?

Can you show a picture?
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