Search results

  1. rodsmith

    Tell us what you did today on your Bearhawk Project

    Painted the dark green trim on the tailfeathers. Will be painting the first wing this week if the weather holds.
  2. rodsmith

    Tinmantech.com 4130 airframe construction video

    Someone on the facebook group asked about how to install a flat fitting in a round tube. I recommended tinmantech.com and their 2 dvd set on building a 4130 tubing airframe if you are scratch building your first fuselage. It has been so long since I built my fuselage and tailfeathers, that I...
  3. rodsmith

    Composite Doors

    At the hinge and latch locations I used hardwood inserts. Luckily my brother-in-law has a planer so I was able to match the thickness of the foam.
  4. rodsmith

    Composite Doors

    Finally painted my doors so thought I would post some construction pictures. Doors are 3/8", 3 pound divinycell foam with 2 layers of carbon fiber on the exterior and 2 layers of fiberglass on the inside. I spent a lot of time contemplating how to do this and finally realized the only way to get...
  5. rodsmith

    Door post and windshield wing root covers

    I had some small pieces of carbon fiber left over from building the doors so thought I would put them to use. I didn't realize until I started making a pattern that the cover for the wing root area of the windshield would need a 3/4" lip on the bottom side to seal off that area. Forms can be...
  6. rodsmith

    Support for open cowl doors

    Here's a detail I have missed anytime I have been around a completed Bearhawk. How are you mounting the rod to the cowl doors for supporting them while open? I see that Eric Newton installed a 15" channel on the door and attached a 1/4" rod to that. Also what is used to capture the rod on the...
  7. rodsmith

    Tell us what you did today on your Bearhawk Project

    Decided to take a break from composite work. I had built my cowling sometime ago but had never installed a door over the dip stick. I was unsure at the time how I was going to joggle the skin for a flush door. I have a harbor freight beading tool with a joggle die, but it is designed to joggle...
  8. rodsmith

    Grand Champion Plansbuilt

    Not Bearhawk related but myself and the rest of Chapter 1373, Delta, CO are thrilled that our good friend, Lowell Manary, got the Gold Lindy for his Marcel Jurca designed Sperocco. Sorry I dont have a good picture to include, it is a 200 mph all wood design and the only one in the world flying...
  9. rodsmith

    Seaplane doors: bottom door frame buildup

    I recently decided to build seaplane doors. I wasn't sure what the best way to build up the door sill was until I saw a post by Nev where he used wood. I found a piece of 4x4" balsa on ebay. Ripped it in half and used my brother-n-laws planer to make 1 3/4" boards. Fortunately I had taken...
  10. rodsmith

    Fiberglass windscreen fairing

    I made the fairing, now wondering what the easiest method of attachment is. I am hoping to never have to remove the windshield once installed so wondering if soft aluminum pop rivets would be adequate. If using screws I will not go to the trouble of installing nut plates, and will have to work...
  11. rodsmith

    Gas Struts

    I'm looking for a source and advise for gas struts. I'm thinking I want 5, 2 each for the seaplane doors and one to hold the rear passenger door open. Mcmaster has a good selection but the minimum closing force for any of them is 15 pounds. My doors are carbon compostite, rear passenger door...
  12. rodsmith

    Tell us what you did today on your Bearhawk Project

    No, you would need to make external molds with a split line to produce more than 1 copy. I believe Carbon Concepts is making them for the B model. These are for the original wing. They released nicely but due to the shape I had to destroy the forms to get them out.
  13. rodsmith

    Tell us what you did today on your Bearhawk Project

    Finally laminated my Hoerner wing tips. Used 4 layers of 9 oz fiberglass cloth. They extend from the end of the wing 15" and weight 7 pounds. I spent a lot of time filling and sanding the forms and I am very happy how they turned out. Should need minimal work to prepare for paint. Expensive in...
  14. rodsmith

    Flap/Trim Wheel console

    I mounted my trim wheel next to the flap handle, I have never cared for overhead trim actuators. I decided I wanted to cover the mechanisms to help prevent jamming with objects that might be dropped. Made the cover with 4 layers of 2x2 carbon twill. Total weight 8 oz. It is plenty sturdy and...
  15. rodsmith

    Tell us what you did today on your Bearhawk Project

    Layed up the induction inlet modification to my nose bowl. 4 layers of 8 Harness Satin fiberglass cloth. It is conformable enough that I was able to use one piece per layer. Happy with how it turned out, now for the hard part, the finish work.
  16. rodsmith

    Composite finishing

    I am looking for a good filler, smoother for composite pieces, there seems to be quite a few options and I am not familiar with them. Primer and finish coat will be Stewarts.
  17. rodsmith

    Nose Bowl Modification

    Had to considerably modify the lower half of my nose bowl to make an inlet for the AFP FM250 fuel servo. I cut this big hole out of the nose bowl, also cut out the bump for the starter that my setup didn't require. Put off the modification for some time because I wasn't sure how to accomplish...
  18. rodsmith

    Seat Latching Mechanism

    I saw a thread that showed the factory seat latching mechanism, (Installing seat lock pins and compression spings) I had not seen this before. I think the way I did it might be easier and maybe a little lighter if you are scratch building. I honestly don't remember now if I came up with this...
  19. rodsmith

    Need some painting advise

    The majority of my Bearhawk will be painted Silver Metallic with dark green trim. I didn't realize when I picked the color that it is the hardest color to get a nice looking result. Very easy to end up with darker streaks, or a mottled appearance. Before painting any parts I sprayed some 4' x 3'...
  20. rodsmith

    Aileron and flap hinge closeout

    Which model are you building? The dimensions for the covers for the original 4-place wings are shown in 1st quarter 2006 newsletter. If you can't access it, talk to Jared Yates. Can't tell you if Patrol and B Wing are the same. Be sure to read the safety notice Brooks referenced above. This is a...
Back
Top