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130X Blade 130X Helicopters Information and Help


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Old 07-03-2012, 04:35 PM   #21 (permalink)
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Default Happens to Full Scale birds as well

Quote" Tail Resonance.
Upon spool up, the helicopters will experience a vibration in the tail assembly, but only during spool up. The tail is hitting a resonant frequency at a certain head speed; this is not a problem, its just something the 130 X does. The key is to quickly move through this head speed range. To avoid this issue, advance the throttle from low throttle to about 75% throttle immediately. The goal is to pop the helicopter off the ground as quickly as possible without letting it stay at the head speed that causes the resonant vibration. Once it moves past this head speed and is off the ground and in the air, the vibration will disappear. "

James, thank you for the clear and understandable explanation. When Arthur Young was designing what was to become the Bell 47 they ran into a problem that they called "2 per rev", which was basically the same thing. Once they got past this resonance the problem simply went away.

Nothing like a historical precedent.

Jake
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Old 07-03-2012, 08:09 PM   #22 (permalink)
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is your gyro sens setting on a dx7 suppose to be set to zero or 50% on both sides.

In the manual is says INH does that mean 0 % or what is it correctly suppose to be set to?

any help would be great thanks
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Old 07-04-2012, 12:28 AM   #23 (permalink)
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I can safely say the first take off I did not do fast enough thus... fall over to the side whap!

Second time... I did what was told and yeah, it works.

I dare say this might be something that should be said in a FLYER in the box almost.

Say all you want but not everyone comes here and WOULD not know this fast enough.

my two cents.
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Old 07-04-2012, 12:45 AM   #24 (permalink)
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Quote:
Originally Posted by Iskareot View Post
I can safely say the first take off I did not do fast enough thus... fall over to the side whap!

Second time... I did what was told and yeah, it works.

I dare say this might be something that should be said in a FLYER in the box almost.

Say all you want but not everyone comes here and WOULD not know this fast enough.

my two cents.
from the manual

"Takeoff
Quickly increase the throttle to 1/2 throttle and establish a low level hover.

CAUTION: Do not give any aileron, elevator or rudder commands before takeoff or the helicopter may crash."
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Old 07-04-2012, 12:11 PM   #25 (permalink)
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Quote:
Originally Posted by gixster View Post
from the manual

"Takeoff
Quickly increase the throttle to 1/2 throttle and establish a low level hover.

CAUTION: Do not give any aileron, elevator or rudder commands before takeoff or the helicopter may crash."

Oh no I saw that, after I snagged the settings for my DX6i but like I said... I do not think everyone reads that.

I admit I went to my settings first then bound .. then flew... then WENT back and read it.

I have to bet not everyone reads it right away.... just a hunch. Hence the flyer that is orange and is in your face lol.
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Old 07-04-2012, 02:02 PM   #26 (permalink)
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Has anyone considered the bevel gear rubbing on a FET could cause any vibration issues that in turn cause the gyro to act goofy as well as affect other heli operations? I mean from what I understand, vibration is a killer of flybarless right?

I'm just saying!
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Old 07-04-2012, 04:54 PM   #27 (permalink)
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Quote:
Originally Posted by browndog View Post
Has anyone considered the bevel gear rubbing on a FET could cause any vibration issues that in turn cause the gyro to act goofy as well as affect other heli operations? I mean from what I understand, vibration is a killer of flybarless right?

I'm just saying!
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Old 07-04-2012, 07:33 PM   #28 (permalink)
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after reading the thread on the bevel gear problem, I checked mine out and mine deff has been rubbing on the servo fet :/

you can see all the black dust when looking at it with a flash light

Hopefully it doesn't cause any problems as I only have 4 flights on mine, I bet its already worn enough so it isn't rubbing anymore.

Tomorrow I might take some sand paper and run the motor up without the blades on and bevel the gear down to allow clearance.

hopefully horizon addresses this issue.
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Old 07-04-2012, 08:23 PM   #29 (permalink)
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Quote:
Originally Posted by Helistyle View Post
after reading the thread on the bevel gear problem, I checked mine out and mine deff has been rubbing on the servo fet :/

you can see all the black dust when looking at it with a flash light

Hopefully it doesn't cause any problems as I only have 4 flights on mine, I bet its already worn enough so it isn't rubbing anymore.

Tomorrow I might take some sand paper and run the motor up without the blades on and bevel the gear down to allow clearance.

hopefully horizon addresses this issue.
Don't run the motor when sanding it you might melt the gear turn the grips by hand.
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Old 07-05-2012, 06:44 AM   #30 (permalink)
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Not going to melt the gear with fine sand paper and throttle at low rpms, my gear would have already melted runnin against the servo get if that was the case .
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Old 07-05-2012, 07:24 AM   #31 (permalink)
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Quote:
Originally Posted by Helistyle View Post
after reading the thread on the bevel gear problem, I checked mine out and mine deff has been rubbing on the servo fet :/

you can see all the black dust when looking at it with a flash light

Hopefully it doesn't cause any problems as I only have 4 flights on mine, I bet its already worn enough so it isn't rubbing anymore.

Tomorrow I might take some sand paper and run the motor up without the blades on and bevel the gear down to allow clearance.

hopefully horizon addresses this issue.
What about space out the servo with washers? Sorry, but I'm still waiting for delivery of the model.
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Old 07-05-2012, 08:08 AM   #32 (permalink)
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Quote:
Originally Posted by liftbag View Post
What about space out the servo with washers? Sorry, but I'm still waiting for delivery of the model.
The servo is fitted in a slot in the frame, looks like the only option is to turn/file down the gear
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Old 07-05-2012, 09:37 AM   #33 (permalink)
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Yeah only option would be to file the gear down some, I might just leave it as I have had no problems as of yet.

Helicopter flies great just dont know how they would fix this issue, unless some of the gears that are being molded are bigger then others .
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Old 07-05-2012, 09:27 PM   #34 (permalink)
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Just got the heli.....still learning to fly, but can easily do flips, hover invert. and fly the entire field....this thing is great Have noticed the dust build up from the gear rubbing on the fet...also the tail, at times, seems to shake while hovering in the air....gears are fine and not stripped. Any ideas what may have caused the tail shake?
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Old 07-05-2012, 11:46 PM   #35 (permalink)
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Is Horizon going to comment on the high percentage of users with initialization issues? I understand if you guys are still testing before making a statement, but although I haven't had any range issues or anything it certainly doesn't raise my confidence level. If you want to send me a replacement, I'll send you mine after receiving it for testing purposes.

If you guys say it's fine to fly with once it's fully initialized that's fine until you come out with a fix. If you are going to offer warranty replacements, are we going to have to ship our old ones back or do it with a "core charge" type of replacement to keep us flying?

See this thread for reference: https://www.helifreak.com/showthread.php?t=431571
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Old 07-06-2012, 09:15 AM   #36 (permalink)
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Quote:
Originally Posted by poor_red_neck View Post
Is Horizon going to comment on the high percentage of users with initialization issues? I understand if you guys are still testing before making a statement, but although I haven't had any range issues or anything it certainly doesn't raise my confidence level. If you want to send me a replacement, I'll send you mine after receiving it for testing purposes.

If you guys say it's fine to fly with once it's fully initialized that's fine until you come out with a fix. If you are going to offer warranty replacements, are we going to have to ship our old ones back or do it with a "core charge" type of replacement to keep us flying?

See this thread for reference: https://www.helifreak.com/showthread.php?t=431571
+1 on this first time I plugged it in this morning no trouble 2nd time it took 4 attempts to get it to initialize. Radio about 6 feet away both times in exact same spot. I am just afraid someday it won't initalize at all..
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Old 07-06-2012, 07:23 PM   #37 (permalink)
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Default Resonant frequency of the tail?

Quote:
Originally Posted by lightbg View Post
Quote" Tail Resonance.
Upon spool up, the helicopters will experience a vibration in the tail assembly, but only during spool up. The tail is hitting a resonant frequency at a certain head speed; this is not a problem, its just something the 130 X does. The key is to quickly move through this head speed range. To avoid this issue, advance the throttle from low throttle to about 75% throttle immediately. The goal is to pop the helicopter off the ground as quickly as possible without letting it stay at the head speed that causes the resonant vibration. Once it moves past this head speed and is off the ground and in the air, the vibration will disappear. "

James, thank you for the clear and understandable explanation. When Arthur Young was designing what was to become the Bell 47 they ran into a problem that they called "2 per rev", which was basically the same thing. Once they got past this resonance the problem simply went away.

Nothing like a historical precedent.

Jake
Jake,

The tail is hitting a resonant frequency because there is TOO MUCH SLOP in the tail shaft bearings! They are of extremely cheap quality and I have replaced them with a higher quality pair and now my heli's tail no longer hits a "resonant frequency"! There is absolutely NO vibration at any point in the spool up and there shouldn't be! Horizon Hobby needs to supply higher quality ball bearings especially when it comes to the tail!

Michael
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Old 07-06-2012, 09:08 PM   #38 (permalink)
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Got a link to the bearings you used?
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Old 07-06-2012, 10:19 PM   #39 (permalink)
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no. my gear is far away from the FET and it still resonates
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Old 07-06-2012, 10:27 PM   #40 (permalink)
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Quote:
Originally Posted by hpilotrc View Post
Jake,

The tail is hitting a resonant frequency because there is TOO MUCH SLOP in the tail shaft bearings! They are of extremely cheap quality and I have replaced them with a higher quality pair and now my heli's tail no longer hits a "resonant frequency"! There is absolutely NO vibration at any point in the spool up and there shouldn't be! Horizon Hobby needs to supply higher quality ball bearings especially when it comes to the tail!

Michael
I can't believe Horizon would say to run through the vibration and it is normal. I am really surprised at them for trying to convince people that is how it was designed. If any of my Miniature Aircraft Gasser heli's or my trex 450 did this and the company would say,,,,this is 'Normal" and 'no problem' then I have a big issue with them. Horizon better fess up as they are looking like snake oil salesmen. That is crap.

RR forums there was a post that they replaced their crappy chinese bearings with quality Japanese bearings with a consumer cost of 7 to 8 bucks each and it cured the problem of tail vibrations that are part of the "design"
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