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Old Mar 09, 2012, 10:00 PM
Against Helicopter Cruelty
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Prof, my blog deals with catastrophic situations, where the helicopter won't fly. With TBE, you should still be able to fly, so my blog may or may not help you. I'd like to assess if the TBE you're seeing is mild, medium, or huge. How big would you say the circle it is making?

Have you replaced any parts? If so, what are they?

Have any parts come off during the crash that you have to reinstalled? If so, what are they?

I'd like you to check the Connect Buckles (those dog-bone shape links) carefully. The O-ring of each end of each link should be sitting squarely on a ball joint. Make sure that none of them has gone passed the ball and is hooking on the arm of the ball. Otherwise, back them out and reinstall them ON the balls.

If that doesn't help you, how many connect buckles are there in the head. If there are two, take one off (completely) and try flying it that way. If that doesn't take care of the TBE, replace the link you took off and then take off the other one.

That's enough for now. Try those things and let me know how you're doing.

Stay tuned, illustrated pictures to follow...
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Old Mar 09, 2012, 10:09 PM
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Canton, Michigan USA
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Quote:
Originally Posted by Heli Pad View Post
Prof, my blog deals with catastrophic situations, where the helicopter won't fly. With TBE, you should still be able to fly, so my blog may or may not help you. I'd like to assess if the TBE you're seeing is mild, medium, or huge. How big would you say the circle it is making?

Have you replaced any parts? If so, what are they?

Have any parts come off during the crash that you have to reinstalled? If so, what are they?

I'd like you to check the Connect Buckles (those dog-bone shape links) carefully. The O-ring of each end of each link should be sitting squarely on a ball joint. Make sure that none of them has gone passed the ball and is hooking on the arm of the ball. Otherwise, back them out and reinstall them ON the balls.

If that doesn't help you, how many connect buckles are there in the head. If there are two, take one off (completely) and try flying it that way. If that doesn't take care of the TBE, replace the link you took off and then take off the other one.

That's enough for now. Try those things and let me know how you're doing.
TBE was about a foot in diameter. After lubing with commutator lube (RC car lube) and taking slop out of the upper blades (not floppy, just equal to lower blade). It reduced by half. Then I checked the upper links and one was over driven (pushed on too far). I re-positioned and now the TPE is maybe 4-6 inches.

Bill
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Old Mar 09, 2012, 10:20 PM
Against Helicopter Cruelty
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Possible cause of TBE

As I was saying in my last post. TBE could be caused by bad installation of connect buckles. Or, they could simple be knocked out of place in a bad crash.

Check out the pictures below. The first picture shows how a connect buckle is properly installed. The 2nd picture shows how it is improperly installed, and would most definitely produce TBE. Check each and every connection point!
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Old Mar 09, 2012, 10:25 PM
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Quote:
Originally Posted by Heli Pad View Post
As I was saying in my last post. TBE could be caused by bad installation of connect buckles. Or, they could simple be knocked out of place in a bad crash.

Check out the pictures below. The first picture shows how a connect buckle is properly installed. The 2nd picture shows how it is improperly installed, and would most definitely produce TBE. Check each and every connection point!
Mine was like picture 2. Ball cup was over driven. Re-centered like it should be seems to be the fix. Therefore, over driven ball cup = TPE.

Thanks for the help.

Bill
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Old Mar 09, 2012, 10:27 PM
Against Helicopter Cruelty
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Ah, so Bill, you did find something, and I wasn't far off. Now 4-6 inches is a tiny circle for TBE. I would chalk that up as air turbulence, unless your helicopter is doing endless quick circles that you're not able to fly out of. Fly it some more and let the links work themselves out a little. If it still bothers you, and if you could upload a video of it, I'd be happy to look at it and perhaps make another suggestion.
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Old Mar 09, 2012, 10:35 PM
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Originally Posted by Heli Pad View Post
Ah, so Bill, you did find something, and I wasn't far off. Now 4-6 inches is a tiny circle for TBE. I would chalk that up as air turbulence, unless your helicopter is doing endless quick circles that you're not able to fly out of. Fly it some more and let the links work themselves out a little. If it still bothers you, and if you could upload a video of it, I'd be happy to look at it and perhaps make another suggestion.
You nailed the root cause. I think the lube helped as well as taking a large amount of slop out of the blades but the primarily cause was the link ball cup being overdriven.

You are the master. Too bad it can't be added to an FAQ at the start of the thread. You should definitely add the TPE to your blog.
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Last edited by Prof100; Mar 09, 2012 at 10:43 PM.
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Old Mar 09, 2012, 10:40 PM
My toilet water has TBE
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Old Mar 09, 2012, 10:42 PM
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Originally Posted by stickman0236 View Post
I cited Heli Pad's blog for informational purposes, as there is (what I consider) a wealth of information on head problems for coaxial copters. I submit this vid, hopefully with approval, to show what I mean about how freely the flybar is supposed to move. The video quality should be sufficient to show how the flybar is supposed to react when there are no deficiencies.
http://youtu.be/MHb5hIp7WjQ
OOPS, you have it set to private and you need to make it public or post the password.
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Old Mar 09, 2012, 10:58 PM
Against Helicopter Cruelty
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Bill, You're too kind. I'm just glad to help. I will try to write that up in my blog so that it could be easily referenced. I'm pretty sure that more people will encounter it. Cheers.
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Old Mar 09, 2012, 11:04 PM
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Originally Posted by stickman0236 View Post
nevermind. ignore my previous posts

Stickman0236,

Sorry I didn't acknowledge you. I checked out Heli Pads blog.

By the way, I would like to see your video but you have it coded on YOUTUBE as private.

Bill
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Old Mar 09, 2012, 11:05 PM
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Originally Posted by Heli Pad View Post
Bill, You're too kind. I'm just glad to help. I will try to write that up in my blog so that it could be easily referenced. I'm pretty sure that more people will encounter it. Cheers.
That would be a great reference for you (and others) to point to if you posted it on your blog.
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Old Mar 10, 2012, 08:08 AM
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Hi Gang
For anyone wanting to suppliment their S107 Squadron with another sweet little bird, New Egg has the Syma S109 on sale this weekend for just 21.99 shipped.

John
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Old Mar 10, 2012, 11:08 AM
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Hi Gang
For anyone wanting to suppliment their S107 Squadron with another sweet little bird, New Egg has the Syma S109 on sale this weekend for just 21.99 shipped.

John
I was hoping to find a replacement battery for mine, but the only ones I found in the 150mah range looked very different from mine. At this price for a new one, I guess it's worth getting another. Thanks for the link!
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Old Mar 10, 2012, 11:33 AM
Against Helicopter Cruelty
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Hi guys,

I spend most my time in the plane sections of this forum and dropped in here to see if I could get some info on a replacement battery for my S107. 739 pages!! This thread is epic! Can someone save me some time and guide me in the right direction? Looking for a larger capacity if possible.

Thanks!
Mr. Tick, I saw that you have vast experience in planes. The power source of an electric toy heli is not that much different from planes. Assuming that you have experience with Lipos, my recommendation for you is to look for replacement batteries in Amazon and on Ebay. The specification for the replacement is: 1S 3.7v, at least 150mAh and 20C. It should contain an over-charge PCB. Otherwise, you would have to transplant the existing one over.

If the replacement battery meets all of the requirements about, and weights around 4g, you are golden. Just solder the 2 leads onto the PCB and you're done.

Here's a couple of links to get you started:
http://www.amazon.com/Battery-Origin...1400621&sr=1-7
http://www.ebay.com/sch/i.html?_nkw=...at=0&_from=R40
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Old Mar 10, 2012, 01:32 PM
Against Helicopter Cruelty
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Toilet Bowl Effect

Alright, I have created a new blog entry for TBE. Please check it out. If you find it useful, reference it when you're helping someone with the TBE blue in the future.

http://www.rcgroups.com/forums/showt...5#post20995215
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