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Post by edintexas on Mar 20, 2013 10:21:08 GMT -4
One thing I picked up on regarding the rectangular plastic servo "nuts" is that they can be mounted facing in or out for the aileron servos. I've seen them used both ways. But if you turn them so that the bosses 'plug' into the holes in the frame they will center the servo mounting screws. The triangular ones must be mounted that way (bosses facing into the holes) but the rectangular ones will work either way. I had to slightly bore out the mounting holes on my frame to get them to go in. I've read posts on other sites where guys have done the same thing. The mounting holes for the elevator servo are smaller. I think those holes may actually be the same as the OD of the screws. So mount those nuts with the bosses facing out. Also, the Chaos manual doesn't show the rubber grommets. There is some argument about whether they affect performance or if they improve survivability for the servos in a crash. I don't know about any of that. But what they will do is locate the servos and prevent them from slopping around in the frame cutouts. If yours are the rectangular ones (look very similar to the mounting nuts) be sure they're plugged into the holes in the servos, not the frame.
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Post by luckyarmpit on Mar 20, 2013 22:43:57 GMT -4
One thing I picked up on regarding the rectangular plastic servo "nuts" is that they can be mounted facing in or out for the aileron servos. I've seen them used both ways. But if you turn them so that the bosses 'plug' into the holes in the frame they will center the servo mounting screws. The triangular ones must be mounted that way (bosses facing into the holes) but the rectangular ones will work either way. I had to slightly bore out the mounting holes on my frame to get them to go in. I've read posts on other sites where guys have done the same thing. The mounting holes for the elevator servo are smaller. I think those holes may actually be the same as the OD of the screws. So mount those nuts with the bosses facing out. Also, the Chaos manual doesn't show the rubber grommets. There is some argument about whether they affect performance or if they improve survivability for the servos in a crash. I don't know about any of that. But what they will do is locate the servos and prevent them from slopping around in the frame cutouts. If yours are the rectangular ones (look very similar to the mounting nuts) be sure they're plugged into the holes in the servos, not the frame. Looks like we're about at the same point in our builds. I wondered about the same thing, but for me it was using the metal inserts that come with the servos. The servo mounting screws provided with the kit were too large to fit in the inserts so I removed the inserts. I left the rubber grommets in there because I like the vibration damping they provide. I squished them a bit when I tightened the screws - which I didn't really care for - but the servos seem nice and snug. No play whatsoever. I left the plastic "nuts" facing out and the servos seem fine. As you'll see in the pictures below, I had a plastic piece that was not referenced in the manual. I assume that is used for different sized servos? I might have used that in my T-Rex 600e ESP as it looked familiar but since it was not in the manual I did not install it. I also had a bag of ball joints that were self-threaded but I didn't use them... I used the ones that came with machine threads and matching nuts. Was that plastic piece and self-threading ball joints from previous kit revision? Finally, once I programmed the radio and centered the servos, I didn't like the way the pushrods were slanted. So I swapped the ball joints on the pivot arms and the pushrods are nice and straight now. It made me feel better. You'll see what I mean in the pics below. One last thing... I resize my pics to 1280x1024. Is that too big guys? Should I make 'em smaller or is the larger size OK? I figured the more detail you get in the larger pictures is better for future reference...
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Post by luckyarmpit on Mar 23, 2013 10:54:07 GMT -4
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Post by Chris Reibert on Mar 24, 2013 0:04:53 GMT -4
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Post by Valkman on Mar 24, 2013 7:50:08 GMT -4
Nice work. Give Dr.Evil a shout regaurding the update of the manual. It should be easy enough to resolve.
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Post by luckyarmpit on Mar 24, 2013 12:55:01 GMT -4
Thanks guys, and thanks for the pics crmodels. I'll do that here shortly.
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Post by luckyarmpit on Mar 25, 2013 9:36:17 GMT -4
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Post by Chris Reibert on Mar 25, 2013 22:17:47 GMT -4
There you go man the servo rod semitry looks much better! Keep up the great work
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Post by luckyarmpit on Mar 26, 2013 22:04:05 GMT -4
I snuck out to the workshop at lunch and did just a little bit... I mounted the tail servo to the CF mounting plate and I attached the ball joint to a servo arm. I didn't want to use the self-tapping threaded ball joint - what can I say, I'm paranoid - so I dug through my spare heli stuff and found a ball joint with a machine thread. I even found a nut that fit it and secured it with thread lock. Sorry for the less-than-stellar picture quality; these were taken with my mobile device as I didn't have time to grab my camera.
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Post by edintexas on Mar 31, 2013 4:01:39 GMT -4
IT HOVERS! Wow, what a rush! I got my 600 off the ground for the first time last Wednesday afternoon. Sorry I didn't have my wife take video but take it from me it was smooth and stable. And what a great sound!! I wish I could have spent about a week with it, tuning and tweeking and so forth. But alas, I had to pack it away for a bit. Left for Saudi Arabia Thursday and won't be back for 6 months I'll be looking forward to it when I get back.
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Post by Dr. Evil on Mar 31, 2013 7:49:24 GMT -4
IT HOVERS! Wow, what a rush! I got my 600 off the ground for the first time last Wednesday afternoon. Sorry I didn't have my wife take video but take it from me it was smooth and stable. And what a great sound!! I wish I could have spent about a week with it, tuning and tweeking and so forth. But alas, I had to pack it away for a bit. Left for Saudi Arabia Thursday and won't be back for 6 months I'll be looking forward to it when I get back. Awesome! Glad you got in the air
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Post by luckyarmpit on Mar 31, 2013 12:10:44 GMT -4
IT HOVERS! Wow, what a rush! I got my 600 off the ground for the first time last Wednesday afternoon. Sorry I didn't have my wife take video but take it from me it was smooth and stable. And what a great sound!! I wish I could have spent about a week with it, tuning and tweeking and so forth. But alas, I had to pack it away for a bit. Left for Saudi Arabia Thursday and won't be back for 6 months I'll be looking forward to it when I get back. Congrats! Glad it's working great! I was able to get more work done on Friday because our office was closed for the holiday. I'm in the home stretch which is exciting, but it seems that the little things are slowing me down: 1. One of the boom mounts for the tail servo needed the outside hole enlarged because the screw would not fit & would cross-thread. The hole didn't line up with the threaded hole, in other words. It only took a few minutes with a router bit on my rotary tool to remedy the problem. 2. Much to my pleasant surprise, I found a nice thick CF rod for the tail pitch, rather than the thin/flimsy rod that was included in the kit. Not sure why both were included in the kit, but I'm not complaining. 3. Got the rod mounted but there was a severe bend in the rod due to the position of the servo. I had to drill new holes in the CF mounting plate for the tail servo to lower the servo. This seems to have cured the issue. The rod isn't pefectly straight but it was as close as I could get it. The servo doesn't buzz and/or bind so I think it will be fine. 4. I cut tiny pieces of a nylon zip tie and wedged them in between the tail boom pushrod mounts and the aluminum guides as the guides were sliding a bit when using rudder. This snugged them up nicely without binding anything. 5. The tail pitch slider arm, when at 90 degrees, isn't centered. I don't believe this to be a problem since I have equal throws in both directions. It's not a problem; just worth mentioning in case someone else runs into it. Thanks to doc121 for letting me bounce that off him. 6. I installed the main gear and the motor. I've seen some warped gears before but these seem to be the worst I've ever seen. I'm not sure if it will be a problem but I will start a new post with pictures to get everyone's opinion. 7. I wired up the ESC and the CC BEC Pro, and mounted them both to the frame. I'm going to head to the shop here shortly to see how much more work I can do... enjoy the pics!
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Post by luckyarmpit on Mar 31, 2013 22:11:59 GMT -4
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Post by edintexas on Apr 3, 2013 6:09:19 GMT -4
Here are a couple of shots I took of my 600 build. Attachments:
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Post by edintexas on Apr 3, 2013 6:12:22 GMT -4
One more. Attachments:
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