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Official Dynam 1270mm F6F Hellcat Thread

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  • #81
    Had to put 3ozs with a 2500 in mine, but seems to be ok now.

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    • #82
      Cool. Its just a shame to buy a plane and have to replace the rettacts right off the bat. May as well buy the plane with an order retracts on the side. Had mine for about two years now and love the way it flies.
      Dewey l

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      • #83
        Hey Dewey how you been ?

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        • #84
          Hey Farmflyer. Pretty fair my friend. Been through some things thats kept me away from the sticks and the fourm. Its good to be noticed by what i cnsider an old friend . Thankyou.
          Dewey l

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          • #85
            I’m glad that you’re back old friend !

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            • #86
              Originally posted by Dewey H Lee View Post
              Hey Farmflyer. Pretty fair my friend. Been through some things thats kept me away from the sticks and the fourm. Its good to be noticed by what i cnsider an old friend . Thankyou.
              Welcome back Dewey.... There have been a few guys that are MIA and I hope everyone is well. Happy New Year!!! And Farm Flier, sorry I missed you this year in Grapevine!! Weather was not our friend! Best to all!! Jerry

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              • #87
                Hardway hopefully we can meet next year at Grapevine. I came down met up with Ryan ,Mike and some of the guys from the area we went to another field and flew a couple of days it was a blast.

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                • #88
                  Originally posted by Atesvn View Post
                  Hi Builda, Thanks for the nice words on the upgrade. I'll try to be as easy and simple as I can. The parts list: (retracts) Eflite part# EFLG1590R, Small piece of 3mm craft plywood, 30 min epoxy, (2) 4D finishing nails, 12 Dubro pin style hinges, 2 Dave Brown 2 1/2" (lite flite) treaded wheels. The retracts are a simple remove and replace as they line up exactly with the Dynam mounts. After removing the stock gear before replacing the new Eflites you will need to use a good set of pliers to pull the pin on the Dynam retract ( the one that is the pivot for the rotation). I use a servo tester and stop the retract half way through cycle as its easier to get at the pin. Use a twisting motion, and the little pin will come out. At this point pull the wheel axle out and set aside. Repeat this for the Eflites as well. The Dynam axle will fit into the Eflite exactly so just swap it out and replace the pivot pin. I use some CA to make sure and tap it back in to make sure it seats well. I did have to file the pin about a 1/16 of an inch as it could bind on the Eflite mount if not done. Also watch the screw clearance at the pivot point it may need to be changed to a smaller head screw if it looks to close. After the swap you can still retain the same skirt, and wheel will still line up upon closing. I did swap out the old tires to the Dave Browns due to their being much softer and absorbing a lot of stress/hard landings better. They may need some small filing to open the hole a tiny bit to slip on the axles. As for the number plates, you can just cut the Eflites down and remount to the retracts keeping clearance for the rotation of the skirt to clear. On the flaps, I cut as many have said from the trailing edge of the foam and removed the piece and trimmed out all the wedges remaining. At the bend in the removed piece again cut the foam at the slight bend splitting the flap. I attached three pin hinges to the outboard flap first and then mounted it to the wing. ( I use a small nail and just heat it enough to melt the foam and make my holes, then epoxy them in. For the inboard flap I add three more to that flap as well and test fit to assure enough gap and clearance. I then will cut 2 small pieces of the 3mm plywood 1" x1 1/2". I then cut a notch just the thickness of the plywood into the trailing edge of inboard flap. I then epoxy that piece onto the notch I cut out. This allows it to fill in the gap and have a nice clean edge for appearance. Before I epoxy it to the wing I drill a 1/16 hole through the plywood level with the foam. Once the split flap has been done, now I attach the finishing nail to the other main flap by first holding the flaps even and with the nail through the drilled hole this is your line up point to mark the flap. I again melt a small groove in the main flap enough to recess the nail. Just epoxy the nail to the flap with about 3/8 of an inch through the plywood piece and your done. The flap works very smoothly and has no slop in it. This design allows the split effect with minimum moving parts and no binding. Note I did this before I did the complete assembly as it was easier just working on the wing. I did some touch up afterwards on the paint and the Efite number panel. I did a real close gray with a drop of dark blue mixed and decided to just brush a coat over the entire wing underside. Then 3 coats of a water-base urethane and call it a job well done. Sorry if this dragged out. Hope it helps you or others out there as well. So far I have left my powerplant stock, , but may do an upgrade when I get more comfortable with her flying tendencies. I may go with the FMS 1400 Corsair motor/prop swap I've read about. Time will tell.
                  Hey dude, sorry, been a while since I been back on this forum-as a general rule I avoid forums as RCG is full of opinionated a&@holes IMO, many of whom have little or no idea when it comes to giving advice. I learned that when I almost set my hellcat on fire due to using a motor that was recommended on RCG and on the first and only flight with it the motor generated 600+ watts of heat and melted my motor mount plate quite badly-hence I’m picky and VERY careful now. I also verify watts/amps of each setup I use now when I mod a power setup and always use a bigger than necessary ESC for safety. Apologies for my typos originally too-my phone has a habit of sabotaging my posts lol.

                  my power system in my hellcat (and will also go in my Dynam tempest) is a Turnigy SK3 740kv motor, 65A hobbyking ESC, and I run the stock size prop but an MAS one as opposed to stock (to keep watts/amps within spec).motor is rated 65A and 870W and I’m pulling 60A and 815W so she will go full nail all day with no worry of power system burning up.

                  thanks for the very detailed write up on the flap mod-I have a spare set of wings so over winter (currently summer in NZ) I might get onto that mod on those wings. I have too many planes at the moment in my build que so mods have to wait unless critical-so thanks for the Write up. If I can share any more info powertrain wise that would be of use let me know but that’s what I’m running now and it flies sweet.

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