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  1. john Derstine

    110" TIMBER Assembly Thread

    Balsa arrived yesterday and repair is now complete, but still waiting for the covering, UPS is very slow these days. Also on order the articulating cub gear.
  2. john Derstine

    110" TIMBER Assembly Thread

    covering and balsa should be here mid week, meanwhile some progress while waiting. Interestingly the main spars are balsa with thin hardwood lateral cap strips. stripped the covering all the way down the D tube to inspect, found a cracked sheet, and now I can cover over the slat holes and strut...
  3. john Derstine

    110" TIMBER Assembly Thread

    waiting on covering and balsa, did manage to reinforce the wing root area where it had stress cracks, sandwiched carbon tow between plywood. good thing I previously added glass reinforced hysol to the wing tube area and the struts with the addition to the aluminum strut pass through, no damage...
  4. john Derstine

    110" TIMBER Assembly Thread

    guess I'll stick with the Airtops for 60 bucks they work really well with no air in them, and are thick to resist puncture. if that is, you use them to land
  5. john Derstine

    110" TIMBER Assembly Thread

    That's for sure, the other axiom is if it's there you will hit it. all those poles are a recent development by the adjacent land owner to make a statement. typical here. so the field has been degraded a little because of it. Doesn't affect the other fliers so much as they all fly foamies for the...
  6. john Derstine

    110" TIMBER Assembly Thread

    Thanks Nick, Sh** happens, purely operator error, very lucky, could have hit the ground in many worse ways. Got to be careful of it now as no spares or kits any more. I'd have it back in shape in a few days except had to order materials from the US. so I'll get that gear coming too.
  7. john Derstine

    110" TIMBER Assembly Thread

    Six flights in and this happened, ouch. Our field is short and a recent adjacent property survey had paced a pole with a small flag on it at least 15' in the air at one end of the field. I completely misjudged the landing and my depth perception was way off I clipped the pole with the left wing...
  8. john Derstine

    110" TIMBER Assembly Thread

    Thanks Nick saw your post, I searched carbon gear and found nothing that looked like it would be the right size, TNT will make me a gear but the tempered 6061 T6 gear is 100 bucks plus 50 shipping, the H9 gear is only about 70 and shipping is a lot less. 4 flights so far and my gear has not...
  9. john Derstine

    110" TIMBER Assembly Thread

    searched the thread in vein, anybody know if the stock prop clearance on the 60cc Cub gear is less or more than the Timber gear? I saw the shortening mods, but I don't have a shop and drill press any more to do it right. still may attempt it however. I want to protect my precious Falcon prop...
  10. john Derstine

    110" TIMBER Assembly Thread

    on a positive note, I was able to take out much of the down trim having increased the down thrust and moving the engine up. Carbon prop made a huge difference. had to reduce the idle trim a lot. spins up much faster, pulls better up line, trying to take it a little easy, but failing :) did spins...
  11. john Derstine

    110" TIMBER Assembly Thread

    So much for the slats debate. ripped right off in flight, doing some rather extreme maneuvers, never saw it come off which is weird, but I noticed a trim change right away, had to put in about 3/8 right aileron and some rudder, wondered why and when I landed found out.
  12. john Derstine

    110" TIMBER Assembly Thread

    just looked at my gear after the maiden, my landing was not so pretty ,but drop in from about a foot, tires mashed down a bit, gear looked ok, but when I measured between them they had spread over an inch, and that's with my little stretcher bars in place, So i have decided to order the cub...
  13. john Derstine

    110" TIMBER Assembly Thread

    it's their modus operandi for years. There all molded ASH 31 lasted about a year, but they yanked that for specific structural reasons. That aside they do this all the time, it's not like the old days when manufactures held onto huge inventories or manufactured in house in the US, those days are...
  14. john Derstine

    110" TIMBER Assembly Thread

    Well that's typical for Horizon, and the reason I jumped on one when I saw it was in stock at the LHS. Guess I was lucky.
  15. john Derstine

    110" TIMBER Assembly Thread

    Mine weren't damaged but there is a subtle flat spot in the airfoil which won't affect anything at this scale, in comparing to a full scale slat they are close but not perfect. There is a lot of debate as to whether at these Reynold's numbers slats do anything to improve the stall, but anecdotal...
  16. john Derstine

    110" TIMBER Assembly Thread

    yes the upshot is the motor seems to sit lower using the tick marks they give you on the pattern, had to carve away the triangle stock to mount the engine and subsequently I think I got the engine mounted a little low the first time. LE slats, that's a good question, they do add drag at speed...
  17. john Derstine

    110" TIMBER Assembly Thread

    the firewall is different on mine, has balsa Triangle stock both sides and top & bottom, plus thin ply strips down the sides, so they must have made a changes.
  18. john Derstine

    110" TIMBER Assembly Thread

    I'm similar in that if I don't make trim adjustments right away, my brain just flys the plane and compensates, I took the engine out already and added a small thin washer (2) to increase the down thrust. I had checked the down thrust before I flew it when setting the engine and it was a shy 2...
  19. john Derstine

    110" TIMBER Assembly Thread

    well today was the day. did the first flight of my Timber. uneventful mostly. a big pussycat. running a no brand 23/8 chinese prop, and it's large and heavyish, rpms are down, but I also have it running rich for break in, so a falcon carbon is on the way today. :) Question for you veteran Timber...
  20. john Derstine

    110" TIMBER Assembly Thread

    took it to the field and adjusted the carb and did a range check today, was still lacking one servo but it came later today so next week maiden. tried a makeshift weighing. plane alone on a bathroom scale and me holding it then averaged to 20.5, lightest weigh in was 19.5 pounds. .
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