lml@lancaironline.net Mailing List Archive

Rob,

The first entry for Squeamish at dictionary.com is "dainty." That best describes your excursions from, uh, the "norm."

However, here is information learned from a cruel and unforgiving teacher - experience:

2. - Put a small blast tube directing cooling air to the regulator area. The high dead space between the engine and the firewall can easily exceed 70C, the max operating temperature of the regulator.

2 and 3. Cessna is not a good comparison - everything there leaks air through and into wide open spaces.

4. All power to hydraulic motors and relays should start by going through a pilot reachable breaker. Electrics with no on/off switch need a breaker for use during the next 20 years of testing and modifications.

Grayhawk

PS: Remember to review each component/system for at least the following environmental conditions:

1. Constant vibration

2. Extremes of heat/cold

3. Water penetration in flight or on the ground

4. Positive and NEGATIVE G's.

5. Access for maintenance.......

...

......

In a message dated 1/22/2011 6:34:07 A.M. Central Standard Time, rwolf99@aol.com writes:

Squeamish? What have I done that might make someone nervous? Let's see...

1) I have an electrical bundle running from the panel to the firewall. In one location it is secured by a pair of Adel clamps to the fuel line from the header tank. There is no chance of chafing but it makes my A&P buddy nervous. (At least I ran the wires ABOVE the fuel line, in case the fuel line leaks and fuel runs down the outside of the tube.)

2) I have my B&C voltage regulator on the hot side of the firewall. (Just like many Cessnas)

3) I have my battery in the engine compartment. (Just like many Cessnas)

4) I am using the Control Vision EXP2 power distribution system. There is no way to "pull a breaker" and turn off a circuit. (Note: While it sounded like a good idea at the time, it would have been easier to use standard circuit breakers. I will do that on my next project, if I ever finish this one.)

5) I have a header tank. Lots of fuel in the cockpit.

6) My oil cooler is very close to the cowl exit, so there is no ducting to a set of shark gills on the cowling.

7) There are no cooling tubes blowing air on the fuel pumps or gacsolator. Since I now live in Arizona I'll bet those will get added early in the flight test program. But for now, nothing.

That's about it. There's really nothing glaringly dangerous to me, but others have expressed concerns about those items.

- Rob Wolf