Friday, June 27, 2014

Alternator Works!

Justin Gillen making that motor a gogo

Last night, in 50 knot winds, our midget racer made it's own electrical power for the first time!

A big thank you to Justin for holding the brakes while I looked for smoke leaks.

Its blurry, but somewhere it says 14v

Wednesday, June 25, 2014

Tango 2 Aux Tank Progress

I've been working on a 15 gallon aux tank for the #TangoTimeMachine.  I sized the divinycell, bondo- tagged it together and micro wiped the inside radiuses for the first cure.
Cure two was covering the inside of the tank with 2 plies of fiberglass, followed by grinding off the corners, beveling the core, and covering the outside in 1 ply of fiberglass for the 3rd cure cycle.
During the process, I was getting a little nervous about having made the tank big enough.  I had measured the volume and run the numbers several times, but with the tank sitting next to a 5 gallon gas tank (the kind you buy when you run out of gas), it didn't seem big enough.  Yesterday I finally had to opportunity to get a rough volume test, and it was able to hold 4 full 5 gallon buckets of water.  Whew!
Last night I layed up the top part, and the closeout flanges around the inside top of the tank.

Next will be fitting the tank with the fuel pickup line, and making sure the core areas are sealed before closing out the top of the tank.
Build time to date: 5 hrs.

Monday, June 23, 2014

The only Formula one with a relief tube.

I am not sure having a relief tube in a pylon racer is something to be proud of, but we have one either way.

We spent the weekend on some of the million details that will determine whether or not our little racer makes the trip non-stop to the show.

  • Installed and tested our MGL Fuel Flow Meter
  • Installed the warning system for our alternator
  • Installed and tested our pilot relief system
  • Took the oxygen bottle to be hydro'd
Relief tube on the belly
Alternator panel
We also found a problem with the gasket sealant we used to seal our long range tanks which required removing and re-installing the entire system.  Luckily Jennifer doesn't mind getting her tiny hands (the only hands that fit down in the tank) covered in gasket sealant.

More to come!

Team Wasabi

Thursday, June 19, 2014

Glasair Fuel Tank

 Doug's Glasair II-S FT was built with extra capacity over the original design.  It holds 69 gallons, which is plenty for an IO-360.  Under ideal conditions, Doug could make the flight from Mojave to Oshkosh non-stop with VFR reserves and no wind using an efficient, slow, high altitude cruise profile.  However, conditions are rarely ideal, so he added 15 gallons representing about 2 hours of surplus flight time.  That equates to 20% of the planned flight time.

The tank itself is a 15 gallon gasoline transport container used for ATV and motorcycle off road adventuring.

A bulkhead fitting was installed in the cap.  Using a flop tube for pickup eliminates the potential for a leak at a fitting installed in the bottom of the tank.

A low pressure 12 volt Facet Posi-Flo pump should easily move the fuel.  This one has a built in check valve to increase the dry-lift.  This was necessary due to the use of  a flop tube.

 A test of the uninstalled system was made to ensure there were no leaks and measure the current draw of the pump as well as the ability to self prime across a 30" lift.  It took 42 minutes to transfer 15.5 gallons.  The pump was rated for a higher flow rate but the pressure drop due to the lift apparently slows it down.  Still, that is almost 3 times faster than the Glasair burns fuel in cruise.
 The connection to the aircraft was made at a preexisting ball valve just above where a co-pilots right knee would be.  That valve is normally used to move fuel from the wing tank to the fuselage tank for C.G. control.

The Glasair's fuselage tank holds just over 8 gallons, so the fuel will be transferred in two episodes.
 The pump will mount to an existing screw on the right side seat pan.  Clear line was used on the low pressure side to allow a visual check that transfer is occurring and when the tank is empty.

The right side stick was designed to be easily removed and re-installed.  Many non-pilot passengers prefer the additional room.
The electrical connection will be a cigar lighter plug.  The pump draws less than 2 amps and Doug's cigar lighter style power point can offer up to 20 amps!

This system was designed to be easily installed and removed.  It take just a few minutes and very few tools to do so.

Check back later for the results of flight testing the temporary transfer tank.

Monday, June 16, 2014

Gross Weight Expansion

Justin and I spent the weekend in the hangar modding and testing the Tango and Siren.

Lots of great progress!

First in-flight fuel dump

Sunday, June 15, 2014

Read about Zack's 5000km record in Catbird

Some details about the Glasair:

Aircraft:                Glasair II-S FT, N6940P
Engine:                 Lycoming IO-3690-B1E, 180 HP, Dual LSE Plasma III ignition
Prop:                     72” Hartzell Constant Speed Prop

Fuel Capacity: 69 gallons (as built) plus 15 gallon temporary transfer tank in baggage area
Range (no reserve):        1460nm at 165 KTAS (7.8 gph, 10,500’ MSL)

                                           1844 nm at 155 KTAS (5.8 gph, 15,500’ MSL)

Estimate for MHV to OSH: under 10 hours no wind

Transfer tank provides comfortable 2 hour reserve.

First flight:           Jan 2011
Aircraft time:      600 hours as of Jul 2014
MGTW:                2200 lbs
Useful Load:         875 lbs
Baggage:              100 lbs

Pilot/Builder:                     Doug Dodson, Rosamond, CA (home airport: L00)
                                                - Retired USAF flight test engineer
                                                - ATP, CFI, FAST qualified
                                                - A&P

Doug fabricating factory option wing extensions in Jan 2013.  These can be fabricated to hold fuel but he decided 69 gallons was plenty.  Then Zack suggested a group non-stop to Oshkosh!  If they were made to hold fuel then the temporary transfer tank would not be necessary!

My wife Gail and I made a 4 week trip throughout the Caribbean in the Glasair with several other EAA members in their E-AB aircraft in Apr 2013 culminating in a visit to the Amazon River just south of the equator in Brazil.

We travel extensively in the Glasair for business and recreation.  The airplane is a great sport plane but was built for travel!

See our slide show on YouTube:
Voyage to the Equator

Gail and Doug just after completing first flight in Jan 2011.

Check back... in the near future, see and read about the fabrication of the temporary transfer tank.

Friday, June 13, 2014

Just a couple of wierd airplanes trying to go to Oshkosh non-stop from Mojave.

Rutan Catbird flown by Zach Reeder
Glasair II flown by Doug Dodson
Tango II flown by Justin Gillen
Ol' Blue flown by Dustin Riggs
Thorpe T-18 flown by Tony Ginn
Long Ez flown by Ben Harvey
Polaire Lancair Legacy flown by Brandon Cangiano
Wasabi Siren flown by Elliot Seguin