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Old 05-29-2009, 05:10 PM   #1
Mercuriell
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Default Compass 6HV - Build Videos

Moving on from the success of the Atom, Compass replace their well regarded but not widely flown Knight 600E. Several notable features of this model include direct swash to servo linkages - a smaller frame and canopy and a 12S power system using a new 8 pole 540KV Compass motor. About to be debuted at Nurnberg Toy Fair, Compass kindly sent me a pre-production 6HV to have a look at, so naturally I was keen to share this with you

The kit I was sent includes new Compass 615 CF blades and a HobbyWing 70A HV opto-coupled ESC (no BEC). In order to keep CG in the right place with a small frame the 6HV has been designed to take two stacked 6S packs and Compass clain that the 2600 or 3300 mAh packs used with the Atom should get the bird in the air with a 4-5 min flight time.


Atom 6HV - Video 1 - What's in the box - 98 MB wmv


Atom 6HV - Video 2 - Frame & Motor - 56MB wmv

Atom 6HV - Video 3 - Servos & Tail - 137MB wmv

Atom 6HV - Video 4 - Mast Assembly - 106MB wmv


Atom 6HV - Video 5 - Linkages - 100MB wmv

Atom 6HV - Video 6 - Setup - 111MB wmv
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Old 02-05-2010, 04:03 AM   #2
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Default NEW - Compass Atom 6HV Build Videos

SO first off we have a look at what's included in the kit and show it up against the 600E frame to contrast the difference.

Atom 6HV - Video 1 - What's in the box - 98 MB wmv


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Old 02-05-2010, 04:03 AM   #3
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Default NEW - Compass Atom 6HV Build Videos

Now we have a look at the new Compass motor - 6mm shaft 540kV 8 pole offering - very nice - uses same bearings (696zz) as the counterbearing and looks easy to break down. Motor cut out needs the corners rounding out at the top to allow the motor to move in it's slots to adjust backlash. Also need to sand off the sharp edges of the frame while we're at it. Struts same pattern as the Atom held in place with self tappers - smaller than the Knight but a bit larger than the Atom.

Atom 6HV - Video 2 - Frame & Motor - 56 MB wmv



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Last edited by Mercuriell; 02-06-2010 at 12:51 AM..
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Old 02-05-2010, 04:03 AM   #4
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Default NEW - Compass Atom 6HV Build Videos

Installing the 3 cyclic servos straightforward - I used the Align 610 and no spacers were required to get the elevator ball in the midline - Compass supplies two sets of servo arms JR & Futaba with holes drilled at 22.5 and 25mm - we'll see what collective and cyclic range that gives.

The tail unit is supplied with the grip-flip mod ie leading edge control and was very stiff - this was due to corrosion on one of the grip-slider link pins and also VERY tight plastic grip-slider links which needed a LOT of re-sizing to free up the unit.

PS Initial mounting of the elevator servo with lugs outside the frame fouled the canopy mount so it was mounted inside - easy to jiggle through the two cutouts and ball link needed mounting on underside of servo arm.

Atom 6HV - Video 3 - Servos & Tail - 137MB wmv





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Last edited by Mercuriell; 02-07-2010 at 06:21 AM.. Reason: Add PS
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Old 02-05-2010, 04:03 AM   #5
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Default NEW - Compass Atom 6HV Build Videos

Installing the mast pretty straight forward - note it's the same as the 600E and 3dplus with the middle hole 40mm from the end. There does seem bit of spare mast going by the available swash travel judged by the washout pins and I thought it might look better lowering the rotor head by 5mm - have to see how it looks with those 615mm blades - don't want boom strikes !!

Swash the same as the other Knights and Odin but has a longer pin on one of the outer ring balls to locate in the anti-rotation device. Tail belt runs very true and doesn't foul the main gear as happens sometimes on the Atom 500. Had a problem with the phasing ring binding sorted out with a bit of Dremel correction to one of it's slots - not a big drama - starting to look like a heli now - very compact.

The new grips are nice and incorporate 2mm plastic spacers so that 10mm root blades slot straight in without annoying washers. Not much else of surprise in the rotor head - uses the same Delrin former with one inboard o-ring as the other Knights.

Atom 6HV - Video 4 - Mast Assembly - 106MB wmv
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Last edited by Mercuriell; 02-07-2010 at 02:16 AM..
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Old 02-05-2010, 04:03 AM   #6
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Default NEW - Compass Atom 6HV Build Videos

FInally got my layout for servos sorted out - I had a maiden flight on the w/e and learned that Futaba FASST systems aren't model specific - spooled up the 6HV with another models trannie settings - anyway no harm done but graunched out a Compass servo arm which I thought a little on the soft side - I am told that servo arms won't be included in the production kits - I elected to use some Mikado 20mm GF nylon arms and these went in very nicely and I am very happy with the setup - no mixing and good range of travel. I did have to go back to my original elevator servo mounting with the lugs outside the frame and despite my fears of fouling the canopy mount it seems OK. This video covers installing the rotor head and tail linkages and a note on ball sizing. Next vid will be on setting up and might even post my maiden flight!!!

Atom 6HV - Video 5 - Linkages - 100MB wmv
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Old 02-05-2010, 11:29 PM   #7
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Another Dingovillian build series, subscribed.
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Old 02-05-2010, 11:49 PM   #8
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Outstanding!
(I don't need another helicopter, I don't need another helicopter, I don't need another helicopter)
((If I repeat this enough, maybe I will believe it...))
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Old 02-06-2010, 12:57 AM   #9
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Quote:
Originally Posted by HFG View Post
Another Dingovillian build series, subscribed.
Spot on mate! - we have indoor dunnies too !

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Old 02-06-2010, 01:49 AM   #10
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That frame looks alot like the 450se V2, it's freaky.
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