closed...thanks
05-05-2007 | 08:13 PM
#2
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From: Livingston,
NJ
RE: Help...a little front to back wobble on my v-2
I have the same problem. FYI, I am using 3 HS-65 MG on the cyclic, very solid no play at all. The tail servo is a HS-56, I will upgrade it if necessary. The wobble is obvious in hover, but not so obvious (or present) in forward flight. Idle-up is more solid. It becomes the worst when the battery dies down towards the end. I am suspecting that servos don't have enough holding power when voltage drops? I am really not sure. Please help. Thanks.
05-05-2007 | 09:10 PM
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From: Raleigh, NC
RE: Help...a little front to back wobble on my v-2
ORIGINAL: dave3913
Im getting a little front to back wobble ....changed head speeds, gyro adjustments...paddle adjustments, ...any thoughts...dave
Im getting a little front to back wobble ....changed head speeds, gyro adjustments...paddle adjustments, ...any thoughts...dave
Pete
05-05-2007 | 09:12 PM
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From: Raleigh, NC
RE: Help...a little front to back wobble on my v-2
ORIGINAL: honghui
I have the same problem. FYI, I am using 3 HS-65 MG on the cyclic, very solid no play at all. The tail servo is a HS-56, I will upgrade it if necessary. The wobble is obvious in hover, but not so obvious (or present) in forward flight. Idle-up is more solid. It becomes the worst when the battery dies down towards the end. I am suspecting that servos don't have enough holding power when voltage drops? I am really not sure. Please help. Thanks.
I have the same problem. FYI, I am using 3 HS-65 MG on the cyclic, very solid no play at all. The tail servo is a HS-56, I will upgrade it if necessary. The wobble is obvious in hover, but not so obvious (or present) in forward flight. Idle-up is more solid. It becomes the worst when the battery dies down towards the end. I am suspecting that servos don't have enough holding power when voltage drops? I am really not sure. Please help. Thanks.
Pete
05-06-2007 | 06:31 AM
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From: sanford,
ME
RE: Help...a little front to back wobble on my v-2
As Dave3913 elluded to, see sawing or front to back, is either low head speed or tight head dampening. Check out your see saw to be sure it is free in movement as this can cause oscilating, moving around in a circle if veiwed from above, which can look like bobbing at an eye sight level.
For our info, can you give us an idea of your head speeds? If no tach., pinion and motor kv. as well as throttle curve?
For our info, can you give us an idea of your head speeds? If no tach., pinion and motor kv. as well as throttle curve?
05-06-2007 | 09:59 AM
#6
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From: , OR
RE: Help...a little front to back wobble on my v-2
Thanks guys,
I have a tach and I have run head speeds from 1800 to 2600..no change....nothing unusual with the head...and it is front to back....Ive never crashed....barely a hard landing.....I use pro wood blades.....3400 kv motor...staight line throttle curve...twleve tooth pinion
I have a tach and I have run head speeds from 1800 to 2600..no change....nothing unusual with the head...and it is front to back....Ive never crashed....barely a hard landing.....I use pro wood blades.....3400 kv motor...staight line throttle curve...twleve tooth pinion
05-06-2007 | 10:38 AM
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From: sanford,
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RE: Help...a little front to back wobble on my v-2
Ya, I just noticed it's a V2, not framilar with the head dampening. I assume it's stock. There should be some up down flex relative to being 90 degrees from main shaft.
05-06-2007 | 11:51 AM
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From: sanford,
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RE: Help...a little front to back wobble on my v-2
Oh, that reminds me, take a look at your tail shaft. It can cause a little woble with a slight bend, being that leverage amplifies it.
