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ArcticDave

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Everything posted by ArcticDave

  1. ArcticDave

    New buggy!

    My friend James and I went halves on a buggy for desert travel. Now that cooler weather has returned to AZ...time to get out and play
  2. ArcticDave

    New buggy!

    Thanks for the tip Doug! I hadn't thought about a prefilter That would help a lot! Tom does real well with his old 4runner. They are good rigs. If it were my money, I'd be looking for a Cherokee. Parts are much cheaper and the availability of them is also better.
  3. ArcticDave

    ArcticDave's Legal Eagle XL

    I have always wanted to fly. I was lucky enough to get some stick time growing up in my uncles Cessna 170 and his Piper Pa-18. He did the take off and landing part... I just got to do flying part. It was enough to get me hooked thoroughly. I don't have a pilots license. Never could afford it. I always figured that was a dream that would never happen. Then I started looking at homebuilt designs and found one that got my interest. The Legal Eagle is, when built to plans, a legal FAR 103 ultralight. Thrust is supplied by a half VW engine. The airborne prospector is coming! The picture I attached is a very crudely photochopped image of a completed LE I'll document the build here in the hobby section( got to spice it up a bit, this section is slooooww.) Hopefully the first week of next month I will have enough money to run over to Corona, California and pick up supplies for the project. I tried to source the 4130 chromoly from Phoenix, but prices were over three times the cost of getting it myself from Aircraft Spruce. Check out a youtube user Joe Spencer, He has some great videos. Les Homan is another youtuber flying a Legal Eagle with some great videos. Enjoy! Feel free to chime in as we go along. It would be awesome to get this thing airborne by next summer.
  4. ArcticDave

    ArcticDave's Legal Eagle XL

    There is no stock head that would work without a lot of work enlarging the chambers. I'm gonna just save my pennies and buy a good head already loaded. All I would have to do then is cut it in half and build up the rocker box walls. It will save me a lot of time. I've already started clearing the bench for other stuff. I have several things that need building and plenty to keep me busy. The fuselage needs finishing and painting before the monsoon hits. The tail and wings need to be built as well. I have almost all the materials to finish the rest of the plane.
  5. ArcticDave

    ArcticDave's Legal Eagle XL

    Thats what I did Bob...and they still split. They are beyond my ability to repair at this point. There is new damage down inside the runners that I can't get at to weld. I'm pretty set on a new head at this point. As a matter of fact, I was so disgusted...I flung each one about 100' over into the scrap metal pile
  6. ArcticDave

    Gold monster breaks the skunk

    Woohoo! I'm glad I didn't go now. You wouldn't found it if I had been there. I'm like the typhoid Mary of skunk
  7. ArcticDave

    ArcticDave's Legal Eagle XL

    I could stack more head gasket under there to decrease the compression without so much carving, but my deck height was already .232! Way too tall, I had left any quench benefits in the dust. Using a bigger head will allow me to drop the deck height to the optimum .04". Having good quench will let me bump up the compression and the engine will be much more responsive and even run cooler. All I need is one. I can make both heads from one veedub head. Saving up for a CB Panchitos 044. I can order the combustion chamber cnc milled to 68cc for an additional 30 bucks...saving me a buttload of time. With the additional work to enlarge the chambers the Panchito head is $330 each. http://www.cbperformance.com/Panchito-044-8482-Cylinder-Head-94-Bore-p/1673.htm
  8. ArcticDave

    ArcticDave's Legal Eagle XL

    Yeah, I'd rather it not fail at a couple thousand feet. I wasn't real happy with the heads anyway...good excuse to put the proper head on it.
  9. ArcticDave

    ArcticDave's Legal Eagle XL

    Well....chit. After many many hours of sanding and shaping and measuring, I fubar'd the whole shebang. Driving in new valve guides and split the guide bosses. This was a used cylinder head and I wonder if it had been overheated in its previous life, resulting in a brittle casting. This set is toast. I'll buy a new head when funds allow. In the meantime there is plenty of other work to be done. I'll bag the engine and store it to clear off the workbench for other construction phases. It's a setback for sure, but nothing that can't be dealt with.
  10. ArcticDave

    ArcticDave's Legal Eagle XL

    I wish they came in F° as well. I am going to make a cheat sheet until I got used to the C°crap.
  11. ArcticDave

    ArcticDave's Legal Eagle XL

    Yup. I ordered some for the plane engine. Should be here soon. They should help a lot in fine tuning the carbs.
  12. ArcticDave

    ArcticDave's Legal Eagle XL

    Hahahaha...my gaskets look exactly the same. What is the melt point of the silver solder you used? I know some of the brazing alloys like stay-silv have pretty high melting points and may work okay. The gases inside will be can be up 1350°F, but the pipe temp itself shouldn't be anywhere near that...especially with some airflow. It should work okay I think.
  13. ArcticDave

    ArcticDave's Legal Eagle XL

    A few days worth of some little details...but the engine is getting close
  14. ArcticDave

    ArcticDave's Legal Eagle XL

    Intake and exhaust finished up!
  15. ArcticDave

    ArcticDave's Legal Eagle XL

    It would probably go faster if I had a budget higher than....roughly zero Then again, maybe not! So many little details to lose track off
  16. ArcticDave

    ArcticDave's Legal Eagle XL

    Building intake and exhaust flanges this morning. I used stainless steel tubing for both the intake manifolds and the exhaust stacks. The flanges are simply 1/4" 6061 aluminum drilled, then cut to shape. I have a sheet of annealed copper that I will use for gasket material. That should insure a long leak free service life.
  17. ArcticDave

    ArcticDave's Legal Eagle XL

    Stock 040 heads have itty bitty 38cc combustion chambers. If you look at the pic, you can spot the step the machine shop left in the head. That step was needed to increase the chamber volume. Of course that results in a much taller deck height, which isn't ideal....but it is what it is. With the step factored in that head had 54cc of volume. I took out an additional 6cc's to bring it up to 60cc. Add the .040 copper head gasket in there and that brings the total to 68cc. Right on target for 8.2:1 compression. The 044 heads have more meat in the casting and can tolerate more carving out of the chamber. I can order them with 65cc+ chambers which would allow me to eliminate the tall deck height and build a more efficient engine. All the other half vw's seem to follow the same formula I did. It works fine...I just think it could be better. On the stud holes in the head, 94mm pistons are the max size possible....right there on the ragged edge isn't it?
  18. ArcticDave

    ArcticDave's Legal Eagle XL

    Yep. I made a sealing disk out of some spare acrylic sheet. Install the valves and spark plug and fill with water. I am shooting for 60cc chamber volume. I got this one dead on at 60cc. Still a lot of work to do, but I did get the chamber polished up after hogging it out. Bob, I had to drop the CR so it will live on pump gas. If I had left it alone my CR would have been 10.7:1. I'm going with about 8.2:1 to help control heat. It's not the best way to do it...but budget dictates I use the stock 040 heads I already have. If money were no object and I could afford a bigger head, like a CB 044 that had sufficient chamber volume, I could run a tight deck to take advantage of piston quench. That would let me really bump up the compression for a cleaner burn and a lot more power. Hopefully by the time I wear the ones I am building out...I can afford a good cylinder head.
  19. ArcticDave

    ArcticDave's Legal Eagle XL

    Beginning the cylinder head work. You can see all the material taken out of the second head. Unshrouding the valves removed ~2cc's of aluminum so far. I stopped a full cc short of the target and will take the rest out with finer and finer grit abrasive rolls.
  20. ArcticDave

    14.9 Grams of Ugly

    Bill's nugget made the rounds and I snuck a picture as it went by...
  21. ArcticDave

    14.9 Grams of Ugly

    Thats waaay better
  22. ArcticDave

    14.9 Grams of Ugly

    Why stop now? In for a penny, in for a pound. Throw it back in there until its all gone.
  23. ArcticDave

    ArcticDave's Legal Eagle XL

    They were already in the used case when I bought it. They are the old school ones 1/2" x 13 thread on the outside. They are seated good and the interior threads were still in good shape, so I left them alone.
  24. ArcticDave

    ArcticDave's Legal Eagle XL

    Around 40ish hp...about 25% over stock. Conservatively. It could be a little more...I did some stuff to it
  25. ArcticDave

    ArcticDave's Legal Eagle XL

    The stroke and the different pistons & cylinders. Stock is 87 mm pistons and 69 mm stroke crank. This little thumper has 94mm pistons and a 82mm stroke crankshaft. Quite a bit larger than stock.
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