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Post by harpy on Sept 1, 2013 22:22:44 GMT -4
I am build a Chaos 600 and am smitten with the 700 Jet Ranger Fuselage. I thought since I just started building it might be easier just to set it up for the mechanics right off the bat. I purchase the 700 scale rotor head and extended the boom. RC Aerodyne were sold out of the conversion kits for the tail boom, so I just put a 700 CF one on. I would like to run 690mm blades. Is there anything else I need to do for the 700 conversion (beside the 700 tail blades and grips)? Wasn't sure if I could use the same main drive gear. Haven't picked a motor and probably going with a 10s or 12s for batteries. Any thoughts or advice would be helpful. My other thought was since the Jet Ranger has the tail rotor on the left side I could flip that around. I could reverse the one way bearing, reverse the main blade grips, and change the polarity on the motor. 700 boom installed 700 Head for 10mm Shaft.
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Post by Chris Reibert on Sept 3, 2013 10:50:21 GMT -4
I ran mine on 6s with the stock Chais 600 motor. If you go 10-12s obviously you will gain longer flight times and cooler running motor temps. I never had an issue though. I also used the stronger KDE gear, hub, and one way.
As far as flipping rotation think its as easy as flipping the one way bearing, main grips, tail case, and running the tail push rod on top of the boom.
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Post by harpy on Sept 4, 2013 22:44:13 GMT -4
Good info Thanks. Of course the TT wouldn't fit and the tail boom has to be cut down 40mm for the 700 TT to fit. I didn't want to loose the mounting hole in the rear, so I compromised a little. The Chaos 600 Tail has a much longer notch and fits deeper in the fuselage. The 700 CF Tail Boom has a much shorter notch. It fits in the frame OK with the shorter notch, but I wanted it to sit in deeper like the 600 does. I extended the notch back on the 700 boom to match the 600 boom letting it sit 15mm deeper into the frame. A 800 TT was cut down with a hobby tube cutter and a new end was attached. Once attached I drilled a hole for the pin. The game plan is to JB Weld the end on then press in the pin. 700 Boom on the left notched to the same length as the RCA 600 tube. The cut down 800 TT with end ready for mounting.
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Post by harpy on Sept 5, 2013 21:50:33 GMT -4
Not sure if anyone will find this helpful, but here are the numbers I have for the Chaos 600 to an Align 700 boom (Nitro I think). The notch was lengthened 10mm (remeasured) which would shorten the tail by that much. The difference between the 700 TT and the chopped 800 was 40mm, so I have 50mm difference. Test fitted and everything seemed to lock in fine and turn smoothly. Still need to ground down the pin a bit after epoxy dries. Standard 700 TT on bottom. Chopped 800 TT top.
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Post by Dr. Evil on Sept 5, 2013 22:21:01 GMT -4
Not sure if anyone will find this helpful, but here are the numbers I have for the Chaos 600 to an Align 700 boom (Nitro I think). The notch was lengthened 10mm (remeasured) which would shorten the tail by that much. The difference between the 700 TT and the chopped 800 was 40mm, so I have 50mm difference. Test fitted and everything seemed to lock in fine and turn smoothly. Still need to ground down the pin a bit after epoxy dries. Standard 700 TT on bottom. Chopped 800 TT top. Looking good there sir, thanks for sharing.
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Post by harpy on Sept 15, 2013 12:47:30 GMT -4
Took CR's advice and went with a KDE and went with universal main gear case and one way bearing (UMGC) with their 115 main gear. I used the newer Align H60020a auto rotation gear and H60139A one bearing shaft with m0.6 torque tube gear set. KDE make a kit to use the m0.6 gears, but I found it works fine the newer H60020a auto rotation gear. I figured the m0.6 would speed up the tail rotor since the head speed would be decreased with the 700 blades. I have no idea if this is correct. The KDE main gear rubbed on the frame, so I Dremeled the frame to give it better clearance. Posting mainly to see if I am on the right track. Got a little Dremmel happy, but there is plenty of room for the thicker outer rim of the gear.
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Post by harpy on Sept 17, 2013 2:44:53 GMT -4
Completed tail. 700 Braces, control linkage (cut down), and 800 Fin set.
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Post by Dr. Evil on Sept 19, 2013 19:52:14 GMT -4
Looking nice harpy
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Post by mattox on Sept 22, 2013 15:01:57 GMT -4
Depending on your style, you should be fine.
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Post by harpy on Sept 23, 2013 1:03:46 GMT -4
Thanks, A 530kv motor with a 13 tooth pinion installed, so I guess that completes the drive train. I am going to try and balance to approximate battery weight needed. Was thinking about two 6s for a 12s system.
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Post by harpy on Sept 23, 2013 14:37:22 GMT -4
Balanced at 3 lb or 1361 grams. Each pack should around 680 grams depending on where they can be fitted on the airframe.
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Post by harpy on Sept 30, 2013 22:07:07 GMT -4
Batteries mounted and cg is good. KDE Battery Mount with industrial Velcro stuck on. Waiting for proper battery straps.
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Post by Dr. Evil on Oct 10, 2013 17:00:47 GMT -4
Looking good! When will she go into the Jet Ranger?
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Post by harpy on Oct 29, 2013 0:32:50 GMT -4
I dunno. I would like to put some flight time on the this bird and make sure it flies Ok. With winter closing in I don't think it will be any time soon.
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