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  1. john Derstine

    110" TIMBER Assembly Thread

    I was a little concerned about that, but the force applied is not exactly a shear force or a tensile force, so hard to calculate, Shear is about 60% of Tensile, but should be good for 800-1500 pounds (maybe). I'm counting on the up coming inflatable tires to take some load, it's an experiment...
  2. john Derstine

    110" TIMBER Assembly Thread

    My take on landing gear reinforcement. Cheap easy and effective using scrap ordinary aluminum to make two tension straps. Added almost no weight and made the gear as stiff as if I had made a new gear from 1/4" 6061 T6. Happy with the result. wheels are in customs for three days arghh.
  3. john Derstine

    110" TIMBER Assembly Thread

    Went ahead and added the larger T-nuts. I wanted 4mm but could only find 5mm. OK if you use the metal strap between the struts, I would not use 5mm un reinforced as it actually weakens the wood as it is so close to the margin of the ply. easy job. ripped off the barbs epoxied them in with hysol...
  4. john Derstine

    110" TIMBER Assembly Thread

    Interesting to note you need the extra weight of a flight pack for balancing, negates the reasoning for using a separate BEC. still may go gas, have not pulled the trigger either way.
  5. john Derstine

    110" TIMBER Assembly Thread

    That's a good point, I did not, but I was just looking at it this morning and thinking 3mm bolts and blind nuts here look pretty wimpy. With the aluminum strap the forces no longer transfer to the Tnuts but each strut to the other, the hole is tight no slop, but it sure wouldn't hurt to pop out...
  6. john Derstine

    110" TIMBER Assembly Thread

    I have not purchased an ESC yet, I'm looking at the Castle Creations Talon HV120amp with BEC included, or the Hobbywing FLYFUN 130A HV OPTO V5 ESC and stand alone Hobbywing UBEC 25A HV 3-18S Module 25A with multiple possible outputs for sharing the load and since I may use 2 rxs this will serve...
  7. john Derstine

    110" TIMBER Assembly Thread

    one more
  8. john Derstine

    110" TIMBER Assembly Thread

    Today I will attempt to contribute something instead of just asking questions. While i'm waiting for servos, I decided there engineer a few things, Tail wheel for one, more on that another time. This first job was to address what looked like a weak point in the strut installation. I decided to...
  9. john Derstine

    110" TIMBER Assembly Thread

    I would think whether you can efficiently use a 20x10 vs. a 22x10 would depend in part on whether your using 10 cells or 12. a 20x 10 on 12 cells seems right from what I've researched on similar motor specs ( and the recommendations in the XPWR 40 manual which state a max prop size of 22/10 is...
  10. john Derstine

    110" TIMBER Assembly Thread

    I looked at this motor but getting one shipped to me is hard, based on your results I'll reinvestigate sources. looks to be the perfect size for e power as the motors I have been able to source are either overkill or not quite powerful enough for the kind of flying I envision. Thanks. Edit...
  11. john Derstine

    110" TIMBER Assembly Thread

    Thanks for the tips. Yes 4500 WATTS supposed to be... I'm curious as to which motor you are using so I can get some comparative specs, problem is some manufacturers don't publish detailed specs for their motors. I understand KV and watts/ volts/ Amps. But all the more esoteric numbers I am not...
  12. john Derstine

    110" TIMBER Assembly Thread

    Well. thought I'd better post something about my Timber build, nothing much to report as I am waiting for servos to arrive and almost everything else. I had to import even epoxy and CA as there are no local suppliers here in the Philippines. Managed to get all the servo horns glued in, rudder...
  13. john Derstine

    110" TIMBER Assembly Thread

    Mine finally arrived after a week on a boat from Manila. In perfect shape, no wrinkles or sags in the covering, and so far no questionable glue joints. Typical Hangar 9 quality, the only think I was not impressed with were the aluminum gear and the wheels, but I think I'll use them anyway and...
  14. john Derstine

    110" TIMBER Assembly Thread

    awesome. just like the flying cowboys!
  15. john Derstine

    Hi from the Philippines

    Thanks WMcNabb, That plane (Hangar 9 Ultimate)was built 20 plus years ago, so ancient history, I used all JR equipment in it, as Horizon sponsored me with a team discount on parts. Three Matchboxes, one rx, no powerbox, just lots of redundancy on batteries. All titanium pushrods, and JR servos...
  16. john Derstine

    110" TIMBER Assembly Thread

    Thanks Nick, I have already been through this thread a few times, lots of good info. I will model my electronic install on yours as it it a simple sound approach. I don't want to get into the Power Box thing on this plane as it is not so critical on a plane like this. My issue is radio...
  17. john Derstine

    110" TIMBER Assembly Thread

    Just arranged for delivery of my Timber 110, the only one left for sale in the Philippines. My "local" hobby shop is 570 kilometers away, by several boat rides, or a flight. so it took some doing to arrange logistics. Tomorrow it ships from Manila, hopefully be here by weeks end, and in good...
  18. john Derstine

    Hi from the Philippines

    Yes that's right, I'm john D. an American retired in the Philippines. I've been modeling since, well forever. In the US 20 years ago I was flying 46% scale aerobatic planes. tow planes, and giant scale composite sailplanes, Since coming here not much flying available except small foamies etc...
  19. john Derstine

    110" TIMBER Assembly Thread

    One more question, will save me guessing... what diameters are the two braided sleeves you are using there, many thanks again!
  20. john Derstine

    110" TIMBER Assembly Thread

    Perfect, Thanks for that. I was going to go the powerbox or smartfly route, but it seemed overkill for this plane.
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