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Raymond J

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About Raymond J

  • Birthday 04/29/1967

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    Near Lille, in France
  • Interests
    Aircraft and rotorcraft building, restoration and using.
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  1. On 67 F... https://www.chevsofthe40s.com/detail/30031/Chevrolet_Gas_Tank_Sending_Unit_030_Ohms_For_Gas_Gauge_6V_or.html
  2. For the original canvas, the gluing is carried out with neoprene glue ("contact" glue among the Anglo-Saxons), which holds the temperature once polymerized (up to 130 ° C (260 °F) without problems). For the silicone canvas, I use a silicone glue for gluing joints (silicone) on the glass doors of ovens, this glue is resistant to 350 ° C (660 ° F).
  3. Thank you, but it's not over, we have to explain now why this part disappeared from the engines and what is necessary to do to be able to use it. On the contrary, the conditions for the original part to still be usable.
  4. Presentation of the canvas, control and minor changes : Previously, I put photos and a plan of the parts of this gas pump cooling cover such as according to the origin. The disappearance of this hood on most engines has a reason, which I will expose. For me, this part is a safety element, especially for airplanes that operate under warm saisons, it has a real reason to be on the mechanical pump but it is necessary to make modifications, minor and major, so that the reason for removing it is not dominant. Mooney never came back to this part that is not listed in the spare parts manual... Minor change #1, the diameter of the passage for the air inlet duct sleeve. Originally, it is 1" 1/4 in diameter, but the brazing cord does not allow the canvas to be glued properly. To allow a good bonding and also guarantee a better connection length of the scat air duct, it is preferable to make a passage hole whose diameter is 1"1/2. Thus, the weld seam is avoided. Pict 1 : new silicon canvas with 1"1/2 , Pict 2 : Old canvas and the 1"1/4 passage. Note the lack of glue and the deformation of the canvas near the hole, due to the brazing cord of the sleeve Minor change #2, Metal-metal contact reserve due to vibration: In the canvas there is a passage hole for the fuel pump drain. Before gluing, it is necessary to increase the distance between the diameter of the hole in the canvas and the edge of the metal frame of the hood. The minimum dimension of this distance is 1/4", this corresponds to the black felt trace visible in the photo. A cutout along the radius is ideal.
  5. The plan for the canvas, with the original dimensions Silicon canvas for fuel pump cover.pdf And the new silicone canvas rebuilt for my engine.
  6. Some detail photos for each piece. First the metal structure that caps the pump :
  7. Ok, I'll post here the plans of the parts for make the same. I would put some details pictures too. I request just asking to all to wait a few days, I'm on the move for the job.
  8. Not exactly. yes, for disassembly I just had to drill the rivets. On the aluminum part which is in Al.Mg 5 welded, there was a bit of boilermaking because the part was forced during an earlier disassembly and the upper part was pressed in. For the "gummed canvas" (this is the general name given in France to these technical fabrics impregnated with rubber or similar). In fact, originally, it is a fiberglass canvas impregnated with a mixed butyl-nitrile rubber, capable of withstanding 200 degrees and whose texture to the touch is "greasy", the rigidity of this 3 mm thick canvas is higher than that of silicone canvas. The temperature limit is sufficient in this area of the motor and as it is written above, this gummed canvas construction and its rigidity / flexibility is important for the behavior of this part to vibration. This speaker has been mounted on the engine since 1966, it has a little more than 5500 hrs of operation and I have not noticed any traces of particular wear on the crankcase, the fittings or even the part itself. The motivation for the reconstruction is only the hardening of the gummed canvas with time and temperature. It is important that the ventilation "scat" sheath does not constrain the mechanical pump cover. If you want to rebuild this part I can put here diagrams of the developed parts, with dimensions in inch or mm and photos.
  9. In the end, French wine may have got the better of him...
  10. I set my engine to 20-22/2400 and listen to it purr... Damn it!... This plane is always flying too fast... Because I want the flight to last a long time.
  11. I imagine it would be better to get your pilot's license and then carry out 200 to 500 flight hours on this aircraft before considering changing the roll/yaw interconnection setting.
  12. Jonny has the solution of Mooney's revival in his business... This is the M10 T with a rotax 915.
  13. There is a motto in France... "We don't have oil, but we have ideas..." Sometimes we lack ideas too... Agree with you that, in any case, fossil fuel will be too expensive to mine... I recall, however, that the first engines ran on alcohol... That in France (for example) we used ethanol super fuel created in 1932 and until 1975, that in 1975 was born in French laws the tetraethyl lead super fuel... It was already distributed at gas stations by Esso, BP and Shell (since 1950-55). In fact, only the company Azur (now Total) distributed at home this ethanol fuel. If we have chosen leaded fuel in the past, it is not because it was cheaper to produce... That's just because it was cheaper to buy... Today, the electric choice is the same speech, we go to electric because it is the cheapest to buy... It is understood that the overall cost of production is not yet well known (for example, complete waste management for electricity from the nuclear sector). Yes, electricity is not expensive today, and it is more interesting to ride in an electric vehicle... But automotive gasoline was cheaper than the electric solution in 1970... In France, the liter of gasoline was 75 cents of francs... Taxed at 70%... That's about $0.40/Gal today... Around 1980-1990, with tax incentives and then scrap bonuses for older vehicles, there was a "rush" on diesel engines... Diesel was sold half the price of gasoline... This is the current approach to scrap diesel or gasoline cars if you buy an electric vehicle. This to conclude that, in 30 years, it is very likely that we will demonstrate in the street to rebel against the exorbitant cost of electricity transport (there is indeed a politician on earth who will invent a different taxation for it). What challenges me in everyday life... In 1960, to go to work, a Frenchman used a small car, the engine of which developed about 40-60 KW... Today, he needs a vehicle of about 100 to 120 KW, to make almost the same travel time see more... To stay aeronautical on the Mooney forum... In 1970, a pilot did with a 200 HP 20 E or 20 F what a pilot does today with a 300 HP engine. Thoughts only, not philosopher as Antoine would write
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