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  1. C

    linseed oil

    The welding would burn the oil and generate gas, smoke and expanding air that makes it difficult to close the hole. This is a common problem when attempting to weld anything closed. About the gauge, I said nothing about a gauge. No idea what you are talking about.
  2. C

    Sticker shock!

    I thought I might start a project, a PA-18 with my own preferences. Wider, long gear, the way I want it all around. My first effort was to plot out the airfoil and look into 2024T3 and 4130CrMo. Wow! Sticker shock! I just spent the best part of that last three years in China working...
  3. C

    linseed oil

    I weld in a pad. Drill and tap for an NPT plug, usually 1/8". Fill, tumble it about until the oil gets everywhere, upend and drain. Pull a vacuum. Kill the vacuum filling from a TIG's Argon tank. Goober the pipe plug with Permatex #2 and install it. Oiled and full of Argon. I'm 65. I...
  4. C

    Is 4130 the best idea for every part of a Fuselage?

    I am not certain if I should ask this question here or on the design forum. Here, I hope, as it is a 4130CrMo structure question. For this exercise, I am thinking of building a Cub derivative design. To save a little money on the tubing an idea struck me. In the early days Piper used some...
  5. C

    4 mower engines.

    Sounds interesting. So the weight of starters and flywheels on a per cylinder basis goes down with an increase in the number of cylinders? If so that, would seem to imply designing an engine block or case that accommodated some reasonably priced Briggs upper end parts. Might increase the...
  6. C

    4 mower engines.

    Sounds interesting. What layout would get a balance? Would it look about like a PA-11? Might be a bit nose heavy. Could always set the wings a bit more forward... Yea! Might work!
  7. C

    4 mower engines.

    Parts to overhaul a B&S and about any other engine I have worked on are not expensive in comparison to LicCon parts electroplated with unobtainium. When well maintained they fail infrequently, perhaps with less failure rate than a LiCon fire breather. Cabover
  8. C

    4 mower engines.

    I have been following the Beetle Master forum and been a minor contributor. I would like to launch a little offshoot. I know that some of what I offer will be a bit like walking thru a refinery with a lit match looking for my lost keys but hay, call me a pyromaniac! Here is a little twist on...
  9. C

    Twin-VW engine Push-Pull design idea (The "Beetlemaster")

  10. C

    Twin-VW engine Push-Pull design idea (The "Beetlemaster")

    As long as we are discussing twins, how about carry it just a little further? I like Cubs as a starting point but take off from there to about any layout of your favorites. I rather like the Woody’s pusher/CUB (absent the turtle deck structure) tail but a twin boom/Mix Master will work for...
  11. C

    Twin-VW engine Push-Pull design idea (The "Beetlemaster")

    I’ve been thinking much the same of late! Great minds run in small circles! My thoughts were more in the way of a conventional looking Cub in the front of the rear door post and a Woody pusher behind the door post. The Double Ender with the front engine high might solve a few CG problems but...
  12. C

    4130 tube ...help!

    Not totally. With a fusion weld I used a lot of heat and ran the puddle quickly not trying to get a stack of dimes effect. When I used the rod it was: Heat, dip, move...Heat dip, move trying to get a stack of dimes effect. This was a slower pace and the troubles got worse. The more I tried...
  13. C

    4130 tube ...help!

    This could end up being long winded but I will keep it short. I had to make the 50 mile trip to town so loaded up the tanks of Argon, an empty of CO2, the rods and some of the junk welds. Samples varied from mild steel to 3140 CrMo which I have been sloping together of late. I came into...
  14. C

    4130 tube ...help!

    Thanks, I'll try that. I got a new plastic tube of rods about the time I picked up the recent two tanks of Argon, about 5 lbs if I recall. There is no guarantee that new out of a fresh box makes them clean. Or for that matter, that there is not junk in the metal from which the rods are made...
  15. C

    4130 tube ...help!

    A do it yourself Archimedes test for gasses! And I thought I was was smart! Covers everything but the case of mostly Argon and some nasty stuff that gets mixed in with it. Maybe if I hadn't been smoking so many funny smelling cigarettes.......
  16. C

    4130 tube ...help!

    4130, mild steel, hot rolled, cold rolled and steel form any source tried. Rusty old junk from my old reliable scrap pile ground down until clean. Bits of new steel from several different project over the years. Some angle left over from building a stool last year with the same TIG welder. A...
  17. C

    4130 tube ...help!

    Way too hot makes metal melt all the way. With no support, gravity and surface tension take over and the puddle falls thru. It called a hole, I've been seeing them since I was 9 or 10, I'm 65 now. If you read back a bit, I mentioned lots of sparks almost like spatter from a MIG but finer...
  18. C

    4130 tube ...help!

    DC only machine. Simple one, no pulse settings. No switch to go to reverse polarity. To get reverse polarity, if you wanted to, would require opening the machine and switching connections. It has a thumb switch/variable current control but a foot control can be substituted, I have not done...
  19. C

    4130 tube ...help!

    Yea. My dad started me the torch when I was 10. 55 years and it seems like yesterday.
  20. C

    4130 tube ...help!

    I now have a new, to me, bit of information! Argon does work on a MIG! And it reduces splatter. Since the foaming follows the gas from the TIG process to the MIG process producing nearly identical results of foaming, splattering, and extremely pours welds, by deduction and process of...
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