LongEZ - N961EZ on the tarmac in Alamogordo, New Mexico
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        I just moved the web site to a new server.  

           If you have any problems with pages or downloads,

              let me know,         Fly safe, Waiter


30 MAR 2007. Added Infinity Hydraulic drawings.

I posted several hydraulic diagrams for the Infinity Landing Gear .

You can find these on the INFINITY GEAR screen.

25 MAR 2007. Engine Compartment, Gear

LongEZ engine compartment 7     LongEZ engine compartment 8     LongEZ engine compartment 9

I was concerned that something like this would happen for real (Thimble gets twisted around). So, I replaced the thimble with an AN100 thimble.

LongEZ engine compartment 10

Cleaning up wiring, getting rid of old wires (about 3 lbs). ALSO. Updated the wiring diagrams. I'm adding a page for how the ignition system is wired, but I need to talk to Electroair (Jeff Rose Ignition) as I have a couple questions on how the unit is wired (I can't find my manual). I'll post the updated diagrams as soon as I finish the drawing for this page.

24 MAR 2007. Engine Compartment

LongEZ engine compartment 1     LongEZ engine compartment 2

These are the shorter mounting studs for the E-Mag. They're about 1 inch shorter than the original.

The E-Mag now fits nicely where the left Bendix Magnet used to be.

LongEZ engine compartment 3     LongEZ engine compartment 4     LongEZ engine compartment 5    

This is the "modified" oil dip filler tube. I'm using a short section of reinforced cooling hose to make a slight bend to clear the air intake for cooling plenium.

18 MAR 2007. Engine Compartment

LongEZ Landing Gear 6

Accessory mounting on the firewall

I've gathered all the components that need to be mounted on the firewall; Electronic Ignition systems, fuel and oil pressure sensors, Oil Filter assembly, Crankcase Vent Oil Seperator, Gasculator, and the Oil Cooler.

I ordered hoses and fittings for the new fuel line routing and the oil and fuel pressure sensors.

Combustion Air, Carb Heat, Oil Cooling

The largest task ahead is to plan and build the routing of air for combustion, carb heat, and oil cooling. During my planning and construction of the new cowling, I came up with a rough idea, now its time to make that idea happen. This is what I want to do:

Combustion Air - The pilot can select between three sources for combustion air, (1) Normal - Filtered air, (2) Unfiltered RAM air, and (3) Unfiltered HEATED air. When I made the cowling, I included a small ram air intake on each side of the lower cowling, One of these can be used for Combustion RAM air, the other is for the Oil Cooler.

Carb Heat Air - Depending on which one is easiest (most reliable) to impliment, I'll either use a small heat muff around the exhaust, or I'll use heated air coming from the oil cooler.

Oil Cooling Air - Cool air is supplied by one of the lower cowl ram air intakes. Hot air exhust will be ducted to the rear of the lower cowl and vented at the rear, lower lip. The ducting will be an integral part of the lower cowling. I may use this air as a source of carb heat, undecided.

I spent most of the afternoon moving things around and drawing on paper. I'm trying to come up with a fast, simple, reliable system

17 MAR 2007. 2 lbs in a 1 lb sack - The firewall

With the gear installation complete, its time to start putting the firewall back together. Actually, its not "putting back together", its 'figuring out where to put everything". Changing to downdraft cooling requires a complete re-engineering of the engine compartment and firewall.

Mag Change

I'll be replacing the original "left" Bendix mag with an electronic ignition from E-Mag. When finished, I'll have dual electronic ignition systems, powered by two seperate electrical systems.

I removed the Bendix mag and the impulse coupler extension. I also removed the original "long" mag mount studs. I need to replace these with studs that are an inch shorter to accomidate the E-Mag. A quick test fit of the E-Mag indicates it will fit just fine. A nice feature of the E-Mag is the ability to remove the coil pack from the top and mount it seperately on the firewall. I'm not sure I'm going to do this as firewall real estate is at a premium. Regardless of where I mount the coil pack, I intend to blast it with cooling air.

The coil pack and the electronics for the Electroair system will be mounted on the firewall (same as before) and will also have cooling air blasted at it.

15 MAR 2007. Main Gear Hydraulic

I moved this entry to the RETROFIT / INFINITY GEAR page.

11 MAR 2007. One Hour Ahead (DST)

Gear Doors

Finished the left gear door. Alignment looks very good, The Grasscutter door is rigged and alignment is also good. This pretty much wraps up the landing gear and doors. However, I still need to install my overflow / filler bottle for the hydraulic system.

Extend Bypass Switch

When I installed the new UP and DOWN relays last week, I forgot to rewire my Emergency Extend Bypass Switch. This switch bypasses the landing gear control computer and connects directly to the DOWN relays for both the nose and main gear, AND, it also allows me to extend the struts. Anyway, I got this fixed. I also updated the electrical drawings for both the new relays and the bypass switch. Click HERE to view the electrical diagrams. They're in a PDF format (135kb).

Wheel Alignment

I measured the wheel alignment again. I took an 8 ft straight edge and laid it against the tire. I then marked 7 ft behind the tire, and 7 ft in front of the tire. I did this with both main tires. I then measured the distance between the marks, front and rear. I got 103 inches for the front marks, and 105 inches for the rear marks. These measurements calculate to about .36 deg Toe-In. Perfect.


I found and fixed a minor bug in the Waiter's Landing Gear Controller. With the gear UP, the UP lights were blinking when I put the switch in the OFF position. They shouldn't do this.

With the bug fixed, if the gear is retracted (UP LOCK), you can place the switch in the OFF position and it will turn off the RED - UP LOCK lights. The gear controller is still active and monitors the gear, but the three RED lights are extinguished. I did this because these lights are a distraction, especially during cruise.

No other status lights are disabled when in the OFF position, ONLY the UP LOCK lights.

8 MAR 2007. Left strut back on the plane.

I received the new O-rings from JD at Infinity Aerospace. These are for the upper slide inside and out.

The inside of the old o-ring was flattened on the mating surface and was a little hard. The outter o-ring was soft, but had a couple knicks in it .

The left strut is reassembled with new o-rings. I cycled it a couple times. Everything looks good so far.

7 MAR 2007. Left strut removal.

I developed an internal leak in the left strut after I reassembled it last week. (URGH)

After Talking to JD at Infinity Aerospace, he said it was most likely a burr developed on the inside of the tube when I installed the AN4 hose fitting. Then when I reassembled the strut, this burr damaged the o-rings.

Yup, sure as heck. After I removed the strut and disassembled it, I could see / feel a small burr where the strut compress AN4 fitting is installed. A little grinding with the Dremel and the burr is no longer there. I'll re-assemble after I get a new set of o-rings.

4 MAR 2007. 30 Minute Job - ALL DAY.

Hydraulic Pump Power Relay

LongEZ Landing Gear Electric 1 LongEZ Landing Gear Electric 1 I've had a couple instances were the original Hydraulic pump DOWN relay (shown right) wouldn't pull all the way in. It would hum and get warm. I decided to replace both relays (UP and DOWN) with regular "Starter" relays (shown left: I should have done this on day one).

Starter relays aren't 100% duty cycle relays (like a Master Relay), but are good for intermittent duty, like running a hydraulic pump. The relays I'm using are Part # 22735 from Aircraft Spruce. These particular relays look like a standard automotive starter relay, they also have an "I" (ignition) terminal. The "I" terminal connects to the main power terminals when the relay is energized.

I figured replacing the relays would take 30-45 minutes, NOT. :-(

I had to change my control wiring that energizes the solenoids. With the old relays, I supplied a ground to energize them. However, to energize the new relays requires supplying 12vdc to the "S" terminal. The Starter relays have one terminal for applying power "S" (start), and the "ground" is the mounting bracket. The old relays had a terminal for each side of the coil. (right >)

Original Pump relays, NO GOOD As part of this "rewire" I also fixed my "pump indicator" LEDs. I used the "I" (ignition) terminal on the starter relays to send power to the LED. The LED indicator tells me which way the pump is running UP or DOWN.

ALSO - I added a seperate return (ground) wire for the Hydraulic pump. I was using my main "12Vdc buss return", but I was seeing a voltage drop across the return wire of up to 1 volt when the pump was under load (40 amps). The new seperate return wire goes from the pump directly to the battery and shows about 25 -30 millivolt drop when the pump is under full load.

The bottom line, the pump runs much better with more power, and the relays pull in and out with no problems.

NOTE: The original relays I used were purchased surplus (This may have been the problem). They were mounted sideways. I bet if they were mounted vertical (as shown in the photo), they would have worked OK.


3 MAR 2007. Pumps and Gear Doors.

Hydraulic Pump Sump Pan

I was able to weld the seams of the pan and also installed an AN4 connector in the bottom. I then re-installed the pump and the pan in the nose. I should have all the leaks fixed in the pump, but now if anything leaks, i.e. servicing, it will drip into the pan and NOT onto the floor of the plane. The pan drains through a tube in the belly of the plane.

Grasscutter gear door

This is the right door. I need to do the left door, but I still have a hydraulic leak on the left strut. I need to get a set of o-rings from JD at Infinity Aerospace and replace all the o-rings in the left strut.

LongEZ Landing Gear 2     LongEZ Landing Gear 3     LongEZ Landing Gear 4     LongEZ Landing Gear 5     LongEZ Landing Gear 6

1) I mounted the stainless bracket to the grasscutter door. The geometery is correct to achieve full travel (open/closed) when the gear is extended/retracted.

2) A 1/16 inch stainless cable is routed through Nylaflow tubing. As can be seen in Photo 2, a thimble connects the cable to the stainless bracket on the grasscutter door. The bottom of the Nylaflow tubing is secured to a reinforcement tab on the Main gear door with a -BR3 clamp.

3) The Nylaflow tube is then routed up the gear leg, Nylon wire ties secure the Nylaflow tube to one of the door mount posts.

4) The Nylaflow tube continues up the gear leg and through a stress relief thimble in the bottom of the Brake Hose retaining area.

5) The Nylaflow passes through the Brake Hose retaining area (The brake hose can be seen coiled around the bottom of the area)

LongEZ Landing Gear 7     LongEZ Landing Gear 8     LongEZ Landing Gear 9     LongEZ Landing Gear 10

6 and 7) The top of the Nylaflow tube is secured to one of the reinforcement brackets on the Main gear door using a BR-3 clamp.

The Stainless cable that is inside the Nylaflow tubing is terminated in a turnbuckle. The top of the turnbuckle is attached to an eye bolt that is mounted to the outer strake bulkhead with a pin. The Turnbuckle is adjusted so that the grasscutter door is properly closed when the gear is retracted.

8 and 9) These two photos show the turnbuckle attach point when the gear is retracted. Once the turnbuckle is properly adjusted, it is safety wired.

ALSO, note that the turnbuckle passes very close to the main gear scissor arm. I placed a small self adhesive teflon pad on the arm so the turnbuckle won't hit it.

LongEZ Landing Gear 11     LongEZ Landing Gear 12     LongEZ Landing Gear 13

10) This photo shows the gear fully extended, You can see how the Grasscutter door is open.

11 and 12) These two photos show the gear almost fully retracted, you can see how the cable is routed so it allows the grasscutter door to close.


Gear Door with reinforcement tabs

This is an earlier photo from May 2006. I added reinforcement tabs to the inside of the gear door in the area that covers the tire. I also added tabs at the top to form the "Brake Hose Retaining Area".

The tabs are made by first laying up two layers of BID on a flat surface with peel ply on both sides. When cured, the "tabs" are then cut out with a pair of scissors, then Super Glued into position on the gear door. Three layers of BID are then applied to each side of the tabs to give them their strength and thickness.

1 MAR 2007. New Web Server!

I transitioned to a new web server last night. I've only seen a couple minor problems and it looks like I got them fixed.

I've been slowly outgrowing my old server and had to be carefull of bandwidth, especially since I added videos. With the new server, bandwidth shouldn't be a problem.

My Host is still Ace-Host. If your thinking of starting a web site, I strongly recommend them. Click on their banner on the left side of the page.


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