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Old 12-20-2008, 04:04 AM   #1 (permalink)
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Default Compass Odin 90 - Build videos

Been following the Compass saga for a while and certainly the Knight got a real good rap in the UK - the Odin promises unmatched power to weight ration due to the lack of an engine driven fan and also a small light frame with a RTF weight of just over 4kg.

It largely comes pre-assembled so these gonna be more an assembly sequence than a build and with a bit of luck should have it all together in a couple of days

Compass Odin 90 - What's in the box ! - 30MB wmv

Compass Odin 90 - Landing Gear and Tail - 30MB wmv

Compass Odin 90 - Motor and Clutch Installation - 43MB wmv

Compass Odin 90 - Main gear Installation - 28MB wmv

Compass Odin 90 - Rotorhead Assembly - 32MB wmv

Compass Odin 90 - Servo Installation - 28MB wmv

Compass Odin 90 - Final overview - 38MB wmv

Compass Odin 90 - Test Flight - 16MB wmv
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Last edited by Skiddz; 01-20-2020 at 01:49 PM.. Reason: "Fixed" video links
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Old 12-20-2008, 05:34 AM   #2 (permalink)
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This looks interresting
Hurry up

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Old 12-20-2008, 08:27 AM   #3 (permalink)
 

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Very Interesting John,

I love the A.R.F idea, great to see the brushless cooling system in action and how it handles the Queensland weather. Looking forward to seeing it in the flesh.

Cheers Chris
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Old 12-20-2008, 08:40 AM   #4 (permalink)
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Build plodding along - manual a little bit brief so took some time figuring what goes where - tail assembly looks very nice - 2 radial and a thrust bearing on an adjustable hub. Clutch design also very clever and quite a tight fit to pry the engine in

Compass Odin 90 - Landing Gear and Tail - 30MB wmv

Compass Odin 90 - Motor and Clutch Installation - 43MB wmv
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Old 12-20-2008, 12:36 PM   #5 (permalink)
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DANG IT..... You beat me this time John. My Odin is sitting here wait for me to finish the Gaui and 250... I had no idea you were going to do vids on this heli. Well gets me off the hook

Bob
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Old 12-20-2008, 12:40 PM   #6 (permalink)
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Excellent vids, thanks Mercuriell.

i sent you pm regarding a "manual" unclarity which seems to be in your video... let me know if you did not receive it.

thanks
L:
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Old 12-20-2008, 03:32 PM   #7 (permalink)
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Wow John, two helis in a month, were gonna start calling you Finless
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Old 12-20-2008, 03:38 PM   #8 (permalink)
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I'm always ready to watch a Rodent approved build series.
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Old 12-20-2008, 05:30 PM   #9 (permalink)
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Quote:
Originally Posted by liaan View Post
Excellent vids, thanks Mercuriell.

i sent you pm regarding a "manual" unclarity which seems to be in your video... let me know if you did not receive it.

thanks
L:
Thanks Liaan - the exploded diagram and instructions on tail case and vertical fin mounting aren't entirely clear - the vertical fin was modded to fit onto the tail case but a batch of the fins seems to have escaped without a 3rd hole being predrilled for the tail case M2.5 6mm bolt - it's no big deal to drill a 2.5mm or 7/64" hole midway in the vertical strut of the fin then it mounts onto the tail case nicely - the holes predrilled in the boom aren't used either end and I've updated the vid to make this clearer
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Old 12-21-2008, 12:02 AM   #10 (permalink)
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Yep, Mine does not have the 3rd hole. No matter as I just moved the fin back between the single and other two bolts. Fits real nice.
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Old 12-21-2008, 01:47 AM   #11 (permalink)
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Quote:
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Yep, Mine does not have the 3rd hole. No matter as I just moved the fin back between the single and other two bolts. Fits real nice.
Did you drill it out ? Seems that the clamp on the vertical stab plays a part in fixing the tail case solid in that it doen't have a pinch clamp and just relies on the two M2.5 bolts - bolting the vertical stab on gives it extra stability IMHO
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Old 12-21-2008, 02:04 AM   #12 (permalink)
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Drilled the tail boom and installed the M2.5 or maybe 3mm socket bolts back on step 2. I didn't even notice the small 3rd bolt and after looking at it better I'm sure attaching the vertical fin to the gear case serves no real purpose.
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Old 12-21-2008, 04:55 AM   #13 (permalink)
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Default For Norah fans only !!

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I'm always ready to watch a Rodent approved build series.
All builds come under the guidance and supervision of resident Rattus Norvegicus - 3D Rats Love Helicopters
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Old 12-21-2008, 09:01 AM   #14 (permalink)
 

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I couldn't help but notice Nora "Inverted" in one of those photos John,
Definatley makes her a 3D rodent X-streme varient we might add according to
Köden and myself.
Is there an extra battery other than the flight pack to power the brushless cooling fan?
(Haven't watched all the Vid's yet but we will)

Cheers Chris
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Old 12-21-2008, 11:17 AM   #15 (permalink)
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No extra battery but you can use one if you like. Kevin of KBDD Int'l installed one on his prototype Odin so he could measure the milliamp usage per flight. He still has the battery in.
Fan uses 200ma average per flight.


Very cool build partner John. I bet he keeps the girls away from serious shop work.
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Old 12-21-2008, 11:18 AM   #16 (permalink)
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hi
Presume you can run another battery,but there very little space,and more weight.
the onboard fan pulls 1.5 amps. so not much vs the 8717's.

i posted eagletree tree results of mine on the bench on another thread.

also remember,. if you going to run 2500 mah pack.. you might get 3 flights.. 2 is safe.

also first check if you can get bigger than 2500 mah pack in. the canopy is REALLY close to everything.. (mine rubbed against the fan, servo's, and battery.)

cheers
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Old 12-21-2008, 06:35 PM   #17 (permalink)
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I'm gonna use the Outrage 3600 Rx pack which is tiny has the connector for the Spektrum AR7100R and a separate connector which could run the fan
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Old 12-21-2008, 09:17 PM   #18 (permalink)
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That same pack fit in my Odin fine. Just got the canopy on tonight.
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Old 12-22-2008, 01:10 AM   #19 (permalink)
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Posted main gear assembly - no big deal - the one way is a roller bearing enlosed by two radial bearings - locking collar goes under the top block and is a bit of a fiddle easier if you unscrew back cross brace and swing it back.

Also up is rotor assembly - unusual feature on newer helis is the phase adjustment - the ball links are on 2mm pushrods and all way too tight - need resizing - supposed to be a resizer in the kit but couldn't see it - no big deal - I have 3 already Disassembled the rotor head - pretty standard thrust and two radial - manual shows thrust bearing on the outside but the grips come assembled with thrust bearing in the middle - apparently the manual incorrect and thrust bearing in the middle is the right way !!

Compass have released an update:

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Last edited by Mercuriell; 12-22-2008 at 04:47 AM.. Reason: Update on grip bearings
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Old 12-22-2008, 03:55 PM   #20 (permalink)
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My rotor assembly was assembled and lock tightened. I shall have to check to make sure the thrust bearings are correct.

EDIT: checked my thrust bearings and they are as the new document shows.

Missing the ball sizing tool also.

Nice job John.
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Last edited by NolanManley; 12-22-2008 at 10:20 PM..
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