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HelicopterJR Heli Vibe 90/50, Sylphide 90, GSR260 › Collective Pitch Servo Question Vibe90
01-25-2007 12:12 AM  10 years agoPost 1
PilotCK

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Scottsdale, AZ

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I am mounting the collective pitch servo to the carbon tray and noticed a big gap between the servo underpart and tray ( this is where the screws come through). Is servo suppose to lay againsit the tray or not?

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01-25-2007 06:29 AM  10 years agoPost 2
u.k. sailor

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cambs uk

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the servos should be isolated from the airframe by the rubber grommets it there fore follows they should NOT touch the carbon or even rest upon it. I built my vibe with the new 8715 servos and had to file the mounts and adjacent frames for both the upper two servos to give clearance

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01-25-2007 06:35 AM  10 years agoPost 3
951_Powerstroke

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Corona, Ca

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Check my gallery to see how they mount.

Jay



Of coarse I know how to fly this thing, but if you see me running try to keep up!!

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01-25-2007 11:53 PM  10 years agoPost 4
PilotCK

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Scottsdale, AZ

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Can you post some close up pictures of the collective pitch installed. I still have a gap on mine.

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01-26-2007 03:02 AM  10 years agoPost 5
mdu6

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Montreal

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Look in my gallery, you will find some closeup of the servos

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01-26-2007 03:11 AM  10 years agoPost 6
Kinger

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Granville, OH

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When you say collective pitch, do you mean the servo that controls the elevator A arm? If so, then yes mine has a gap under the servo as well.

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01-26-2007 05:59 AM  10 years agoPost 7
PilotCK

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Scottsdale, AZ

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Yes, I have the 9451 Futaba in my collective pitch and the bottom's but each other so there is a gap on that side of the servo. Is this normal? The gap is about 5mm

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01-26-2007 12:44 PM  10 years agoPost 8
Kinger

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Granville, OH

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If you are using 9451's for collective pitch and aileron (the ones that back up to one another I believe), you'll need to space them out from the frame or they will touch. I had the same problem with the 9351's I'm using in my machine. To space them out, I did the same thing that Lukas Rivas did on his machine. Two Thunder Tiger aluminum servo hold down plates behind the servo and then one in front. Then get some 2.6x15mm screws from JR (the ones you use on the elevator screw) to hold them down. (The stock ones will be too short at this point with the spacers in place.)

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01-26-2007 02:40 PM  10 years agoPost 9
Kinger

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Granville, OH

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Sometimes pictures work better than words, so let's try these. I'm not the best photographer so bear with me.

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01-26-2007 06:32 PM  10 years agoPost 10
PilotCK

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Scottsdale, AZ

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PERFECT THIS HELPS OUT....... No problems with binding since the servos are offset from frame?

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01-26-2007 06:53 PM  10 years agoPost 11
Obiwan

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Sevilla, Spain

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Hey Mike that bird still looks quite shinny you need to spend more fuel on it buddy

Cheers
A,

Best way to predict the future, is to Invent it.

FORMERLY KNOWN AS ForrestGump

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01-26-2007 07:52 PM  10 years agoPost 12
Kinger

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Granville, OH

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Believe me Antonio, I know it needs fuel Still working away on the bench though.

Nope, no binding issues with the servos out from the frame. In fact, by doing this it puts the bellcrank rods at less of an angle than there was previously.

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01-26-2007 10:19 PM  10 years agoPost 13
Kinger

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Granville, OH

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Actually, in looking at this a bit more, I think I may end up cutting the plastic servo posts that go into the frame off at the edge of the frame. This will not allow me to use the capture rings that JR includes in the kit, but it will allow me to get the servo up tighter against the frame. With one more TT spacer or a servo grommet behind the servo, I'll have them spaced out the same distance as I do now, but the fit will be better and the servo will not have a chance to rock at all on the post.

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01-26-2007 11:02 PM  10 years agoPost 14
Kinger

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Granville, OH

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Ok, after cutting the post and placing another TT spacer behind the servo, I definitely think this is the way to go. The servo just feels much more solid. Actually, in looking at the space between my servos, I might be able to get away with just two TT spacers behind the servo instead of 3.

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HelicopterJR Heli Vibe 90/50, Sylphide 90, GSR260 › Collective Pitch Servo Question Vibe90
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