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Old 10-11-2010 | 09:57 PM
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Default servo arms

Currently assembling a large revolver with all hitec servos. It looks like when the servos are in their wing pockets you need a long arm(and put the control rod in the farthest out position)to make sure the control rod isnt touching the wing when the servo is at full throw. The problem is Ihave way to much throw now and it doesnt look like I can go in on the servo arm at all or it will contact the wing when moving.Manual says half an inch either way for high rates, im a little over an inch. I dont know what to do. You should be able to come very close to desired throws without adjusting your radio right?

Please help
Old 10-11-2010 | 10:02 PM
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Default RE: servo arms

What about adjusting on the control horn on the control surface itself? The closer to the surface, the more throw, closer to the tip, less throw. You can also adjust your endpoints through your radio if so equipped.
Old 10-11-2010 | 10:02 PM
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Default RE: servo arms

Did you try to buildup the pocket floor with balsa to get the axis higher in the pocket?
Old 10-11-2010 | 10:06 PM
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Default RE: servo arms

Turn down the servo travel with the transmitter. There should be some kind of end-point, ATV, % range, travel throw, sub-trim, etc. depending on make. you can also take the full amount and set a lower throw as a dual-rate. If you get to 3-D as much as possible is sometimes used.
Old 10-12-2010 | 05:39 AM
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Default RE: servo arms

Yeah, if you have a computer radio, you can cut down the throw with the end point adjustment. We normally don't recommend using this at first, because it should be set up mechanically before you do any electronic adjustments, but in this case, you probably don't have any choice.

I have one that is like that.. the servo arm just didn't reach far out enough so I had to do the end point adjustments.

But, for any of the linkages that have clearance, you should do the mechanical setup first.

CGr.
Old 10-12-2010 | 05:40 AM
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Default RE: servo arms


ORIGINAL: Charlie P.

Turn down the servo travel with the transmitter. There should be some kind of end-point, ATV, % range, travel throw, sub-trim, etc. depending on make. you can also take the full amount and set a lower throw as a dual-rate. If you get to 3-D as much as possible is sometimes used.
I agree with CP. I have the larger Revolver and all you need to do is adjust out some of the travel and you should be fine. Make sure the slot is cut properly where the servo arm comes out of the plane. Sometimes they don't cut it out enough. I was a able to get full travel by the Rev instruction manual and did not even need to go max on my control arms.

Oh, BTW, the Rev 70 has got to be one of the funnest planes to fly made today. It tracks well, and can land as docile as a trainer. The more I fly mine, the more it grows on me and is slowly becoming one of my favorites of all my fleet. I am planning to go 20cc gas on mine this winter
Old 10-12-2010 | 05:50 AM
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Default RE: servo arms

That sounds a lot like my Goldberg Skylark 70. From what I've read about the Revolver, it sounds like it's pretty much the same. Once set up properly, that thing flys as good as my Venus II pattern plane. I am using the OS .75 AX which pulls it around just fine.

CGr.
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Old 10-12-2010 | 06:07 AM
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Default RE: servo arms

Cut the openings larger.
Old 10-14-2010 | 04:00 PM
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Default RE: servo arms

Try to get the most throw outta the servo. They will last longer if the load is spread out over many teeth on the gears, instead of the same ones time and again.

Kinda like in a car when the steering gets slop in it, it's always near center...cause most of the time you're not turning the wheel more than a 1/2 or 3/4 revolution. The center loosens up, and the extremeties remain tight..cause they're hardly ever used.
Old 10-14-2010 | 04:20 PM
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Default RE: servo arms

ORIGINAL: Luchnia
Oh, BTW, the Rev 70 has got to be one of the funnest planes to fly made today. It tracks well, and can land as docile as a trainer. The more I fly mine, the more it grows on me and is slowly becoming one of my favorites of all my fleet. I am planning to go 20cc gas on mine this winter
I absolutely agree. Every time I fly mine Ikeep thinking it has got to be one of the best airplanes ever made.

Old 10-15-2010 | 03:20 PM
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Default RE: servo arms

These are two inches long. That might get you where you need to be using mostly mechanical adjustments

http://www3.towerhobbies.com/cgi-bin...?&I=LXEVC9&P=0
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Old 10-15-2010 | 08:33 PM
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Default RE: servo arms

I buy the 10 or 12 pack of long DuBro control arms, they stick out quite a ways from the servo bay. A lot of the better hobby shops have them in stock for the big three servos.

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