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HelicopterCompass Knight 50 ODIN 90 › Building Knight 3D
09-12-2007 03:47 PM  10 years agoPost 1
RAK402

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Alhambra, CA

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Do you run the washer between the OS .50 Hyper and the fan or leave it out?

Is there an easy way to install the rudder servo in the canopy as opposed to the boom?

Assembly looks very straight forward. Other than locktiting everything, is there anything that I should know or do during assembly.

Any reason to upgrade to metal blade grips or any other part (I know that some of the plastic blade grips on the TREX 600N have cracked-never heard of this on the Knight, I will be running similar RPM).

Thank you all in advance!

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09-12-2007 04:08 PM  10 years agoPost 2
kirk

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Northern, Colorado

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"Any reason to upgrade to metal blade grips or any other part (I know that some of the plastic blade grips on the TREX 600N have cracked-never heard of this on the Knight, I will be running similar RPM)."

No - I have about 90 flights on my 3D in stock form and have had no problems whatsoever with the stock plastic blade grips (I run 2K on the head in idle up). I actually prefer them over the metal grips (Lighter and are easier on the bearings)

"Assembly looks very straight forward. Other than locktiting everything, is there anything that I should know or do during assembly."

Just make sure everything is as smooth as can be, and that you put the mainshaft coller on the bottom of the top bearing block. Lube the spindle and dampners well, and locktite the bolts that go into the spindle (they ususally do not come with loctite).

"Is there an easy way to install the rudder servo in the canopy as opposed to the boom?"

There are a few threads in this section dedicated to doing this. It is pretty straight forwared and easy to do. I used some old stratus parts to make my belcrank mount, and it seems to work great and looks stock. Others have used self made brackets using the stock compass pulley support or metal that they got from home depot. There are a lot of ways to do it that work great. BTW heliproz sells some carbon pushrod kits made by central hobbies that work great. They are about 10 dollars for each rod and come with nice titanium ends.

Good luck with your heli and welcome to the club!!
Kirk

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09-12-2007 04:31 PM  10 years agoPost 3
Dr Lodge

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Guildford, Surrey - UK

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Make sure you undo and re-loctite everything that Compass put in place, other than that its a pretty simple and solid build.

Check your blade bolts, mine are OK but another flyer at our club had bolts where the thread started above the lower blade holder, so there was a weakness and the heli threw a balde with not very nice results. Two fuel tanks and a thrown blade were recovered after the combine harvester had cut the crop!

Vibe 90, Vibe 50, Vigor CS x2,
Dyna-x, Knight 503D, Logo 10,
TRex 500, Furion, Gaui EP200

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09-12-2007 05:07 PM  10 years agoPost 4
ez2bgman

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N'awlins, LA

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Is there an easy way to install the rudder servo in the canopy as opposed to the boom?
Front rudder servo how-to. I detailed one way to do it in this thread.

Gary
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09-12-2007 05:43 PM  10 years agoPost 5
RAK402

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Alhambra, CA

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Thank you all for the excellent information.

Question regarding the thread on moving the rudder servo (which is an excellent thread, by the way):

The rudder servo appears to occupy the same hole/opening on the frame, as is used for the throttle servo but, on the opposite side. Were spacers used to allow both servos to occupy the same area, without hitting each other?

Thank you all again!

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09-13-2007 03:02 AM  10 years agoPost 6
petmotel

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DeKalb, IL.

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Gary has a Hitec hs81mg mini servo cut in the switch hole for the throttle on the other side.

Jay

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09-13-2007 04:40 AM  10 years agoPost 7
ez2bgman

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N'awlins, LA

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Jay is correct. I used a Hitec HS-81MG mini servo. I just enlarged the switch hole on the left side of the frame and mounted it there. It takes about 5 minutes to mount a mini servo there.

Gary
Hot Girlz in da gallery

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09-14-2007 05:20 PM  10 years agoPost 8
RAK402

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Alhambra, CA

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Thank you all for your assistance and advice.

It is greatly appreciated.

So far, I have opened up the servo mounting holes, where appropriate, for the 8717's, have the gear and boom on, and have installed the motor and governer sensor.

The only challenge so far, was slipping the crankcase guide over the front bearing.

All of the parts fit well, and most of it was locktited well (I have been removing and re-installing all of the bolts, one-by-one.

Thank you all again!

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09-18-2007 09:46 PM  10 years agoPost 9
RAK402

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Alhambra, CA

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Almost ready.

Everything is assembled, now it is a matter of strapping down wires, setting the gyro and governor, waiting for my batteries to arrive, and performing one final check.

I am really looking forward to this!

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09-19-2007 05:19 AM  10 years agoPost 10
ez2bgman

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N'awlins, LA

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I think you will really like the Knight 3D. What battery/power system are you going to use? I have heard that the 8717's are extremely power hungry.

What is your collective and cyclic pitch set at? I am running +/- 12 collective and +/-8 on the cyclics with CY Stubz. This is a very quick combo yet stable in FFF and hovering.

Gary
Hot Girlz in da gallery

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09-19-2007 04:30 PM  10 years agoPost 11
RAK402

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Alhambra, CA

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Gary,

I am going to use the Duralite 6V regulator and a 3000 mah Manganese battery (all the heavy duty set up with the 16 gauge wires). I just spent 20 minutes on the phone with a very helpful individual from Duralite's technical department to arrive at this. The regulators are rated at 7.5 amps, but are supposed to be capable of 10 amps (I am guessing for a very short time).

As far as pitch goes, I have not done the final set-up, but I think -12 to +12 sounds about right, with as much cyclic as I can get without binding.

I did shorten the links from the Blade Grips to the Bell/Hiller mixers so that, at zero degrees of pitch, the mixers are straight accross (I did this on the Knight Pro as well). Everything is symmetrical.

For the moment, I have the stock paddles.

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HelicopterCompass Knight 50 ODIN 90 › Building Knight 3D
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