Show Posts - Charles Davis

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Topics - Charles Davis

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16
Hangar Flying / fire warning
« on: December 20, 2005, 09:44:02 AM »
Has anyone tried to install a fire warning system in your cowling?

Just something that would turn a warning light on if the temperature got too high.

17
Hangar Flying / MPH or Knots
« on: December 13, 2005, 11:03:02 AM »
Do most of you guys have or prefer an Mph airspeed over a Knots calibrated gauge?

What is the range on your airspeed indicator?

18
Hangar Flying / Carb, Injection or Throttle Body?
« on: November 11, 2005, 10:13:39 AM »
Just wondering what everyone thought.

Injection seems like the best option, but the most expensive (not only for the injection, but the high pressure fuel pump).  I also worry about the high pressure fuel if I were to develop a small leak in the fuel line.  Is this a valid concern?

I've heard a lot about Ellison TB's being tempermental, or very difficult to properly tune.  Is this a valid concern?  Is there a better alternative to an Ellison TB?  Does a TB need a carb heat box?

Much thanks.

My LongEZ should be flying by next summer.  Here's the numbers:

Engine: O-320E2D, downdraft cooling, 8" extension, 2-blade prop, 4-4 exhaust, one mag, one electronic ign, 40A+20A B&C alt's, light starter.

Airframe: Long nose (Davenport), Roncz, Wilhelmson nose lift, Wortmann gear legs, tall rudders, beefed up headrest, Andair fuel valve, oil cooler cabin heat.

Electric/Avionics: All electric dual alt, dual batt, split bus.  Day/night VFR, Efis-Lite with mini steam gage AS, ALT and T&B backups, lowrance airmap 1000c, vision micro vm1000.

We started with an 80/200 project (80% done, 200% to complete).  My brother is doing the structural work in TN, and had previously complete two very nice Cozy MK4's.  I just write the checks, do the electric and machined parts, and nitpick.  It's been a great excuse for Mike and I to spend a lot of quality time yaking about something we both love.

I live in SD a few miles north of Miramar and plan to base at Ramona, Gillespie or French Valley.  Anyone looking to share a hanger?

19
Hangar Flying / O-320 to IO-320
« on: October 30, 2005, 08:27:23 PM »
I'd like to convert my 150HP Lycoming O-320E2D to an IO-320.

Does anyone know if there is there more I need to do other than replace the carb with the Silverhawk fuel injection system and switching to a high pressure mechanical and electric fuel pump?

Has anyone made this conversion?  Was it worth it in performance and improved fuel economy?

20
Hangar Flying / propeller blanks
« on: August 20, 2005, 04:41:35 PM »
Does anyone know where to buy quality wood propeller blanks?

Thank you.

21
Hangar Flying / drill out prop bolts
« on: August 17, 2005, 09:56:30 PM »
I just bought a slightly used Klaus 2 blade composite prop.  The bolts are 3/8 (.375) and I need to drill them out to 7/16 (.4375).

I plan to make a drill fixture plate for the top and bottom, align it with step pins, and hold them together with a bolt.

It will then be put on a drill press so it can be hand drilled.

I read in Rutan plans that you have to dull the drill point flutes so it won't grab the composite layer.

Does anyone have any other advice, or know what RPM I should use for the drill?

thanks in advance

22
Hangar Flying / Rough River 2005
« on: August 12, 2005, 11:58:33 AM »
Does anyone have the dates for the 2005 Rough River fly-in?

23
Hangar Flying / parachutes
« on: July 28, 2005, 04:01:54 PM »
Burt recommended you wear a parachute during the initial flights.

I wonder about the practicality of always wearing a chute given the cramped cockpit and pusher configuration.

Which configuration is preferred for practicality and cross country comfort?  Seat, back or belly chute?

Thanks

24
Hangar Flying / Boat tail on Long EZ
« on: June 28, 2005, 10:03:04 PM »
What is the concensus on having a "boat tail" lower cowl on a Long EZ?

Any aerodynamic gain?  

How do you like the looks?

Thanks

25
Hangar Flying / tiedown drawings?
« on: June 25, 2005, 10:12:19 PM »
Does anyone have the drawings for the tiedowns that are attached to the wing attach bushings?

These are counterweighted to retract into the wing  and replace the tiedowns that require you drill holes in the wings.

Thanks in advance for your help!

26
Hangar Flying / warning system
« on: June 18, 2005, 11:56:18 PM »
I'm thinking about two separate systems with thier own buzzers and warning lights on the instrument panel.

Use a very loud buzzer (108db?) for the canopy warning since it's the bigger safety issue and you have to hear it over takeoff power settings.

Use a milder two tone buzzer (100db) or a Chime (80db) for the gear warning.  

Use two microswitches at the throttle, one for the gear, the other for the canopy.

This way you can set the each system to trip at a different power setting.  For example, set the canopy warning above 75% throttle, and the landing gear warning below 25% throttle.  

Am I right in thinking that this would reduce the number of "false" warnings?

27
Hangar Flying / GPS Antenna Locations
« on: May 01, 2005, 05:00:35 PM »
I have some room inside the canard cover fore and aft of the canard, large enough to put (2) GPS antennas and (1) XM Satellite Radio antenna.

I had planned to put these near the pilots shoulders on the top side of the pilots seat, or in the headrest.

Does anyone know if the canard cover location will give the GPS antenna sufficient signal strength and satellite line of site, or do I need to place them elsewhere?

Where do other people place GPS antennas?

I also want to put in a localizer antenna.  The antennas I see are pretty large.  It appears the only area large enough for it is in one of the strakes.  Any thoughts?

Thanks!

28
Hangar Flying / Wheel size for Long EZ
« on: March 30, 2005, 12:55:28 PM »
500x5 or 500x4 ?

It looks like most LongEZ's use 500x4 as the tires are cheaper and you pick up about 3 kts.

I plan to fly only off of good paved strips.  My Long EZ will have an IO-320 and will not be light (probably 875 to 900 lbs estimated).

29
Hangar Flying / Dual LSI Ignition
« on: March 18, 2005, 10:51:17 AM »
I was talking with someone who rebuilds engines, and they were kind of down on electonic ignitions, and encouraged me to stick with Mags on my IO-320.

His statement was, "As manifold pressure decreases, you have to advance the timing, but no one can tell you by how much.

If you advance too much, your peak cylinder pressure will increase into the detonation zone."

He went on to describe some engines that he had torn down with electronic ignitions that had metal flaking and errosion of coatings on certain parts that he thought might be related to this problem.

Does anyone else have any experience with these issues?

30
Hangar Flying / Lift tabs
« on: February 28, 2005, 05:55:22 PM »
I've always been queezy about the lift tabs, as I know loosing a canard would be catastrophic.

I'm considering machining the lift tabs from .125 Stainless rather than Aluminum.

Does anyone see any problem with this?

Thanks

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