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HomeAircraftHelicopterMain Discussion › Time for a new project
05-29-2013 02:21 AM  5 years agoPost 41
McKrackin

rrProfessor

Lucasville,Ohio

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The torque tube is amazing...I have broken the boom twice and not had to replace the TT.

The skids are integrated into the frame and break away easily in a crash to prevent dame to the frame...Just two very small mounts front and rear...The boom supports are also mounted to the skids so they tear away without breaking the frame.

Like an Indy Car....The main frame breaks away from the surrounding parts and protects the expensive stuff.

The really bad part is...spending some coin on a good servo would have prevented it all.lol....

I literally never use the word literally right.

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05-29-2013 02:48 AM  5 years agoPost 42
Altrex

rrApprentice

WI

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Saw something similar to what you describe happen to an electric avant last last week. Turns out the front coupling of the TT let loose / melted and therfore goodbye tail. May want to take a close look at it.

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05-29-2013 03:13 AM  5 years agoPost 43
McKrackin

rrProfessor

Lucasville,Ohio

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That is NOT the problem.lol....Thanks though.

The torque tube in on my table.

The tail servo doesn't work.

You have to assemble your own TT...not like Align or about any other kit.
You need to be careful how you put the ends on...I was.

I had one come apart not too long ago...I bought it used...I don't think it was flown but I didn't assemble that TT.

Never knew for sure because I never found the other half of the TT.

The one I have now is fine.

Taken today...

I literally never use the word literally right.

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05-29-2013 05:18 AM  5 years agoPost 44
Justin Stuart (RIP)

rrMaster

Plano, Texas

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Saw something similar to what you describe happen to an electric avant last last week. Turns out the front coupling of the TT let loose / melted and therfore goodbye tail. May want to take a close look at it.
This is what happens when the torque tube is incorrectly assembled. If you assemble the torque tube correctly, you will NEVER have this problem.

Avant RC
Scorpion Power Systems
Thunder Power RC
Kontronik Drives

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05-29-2013 06:34 AM  5 years agoPost 45
BobOD

rrElite Veteran

New York- USA

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I agree with Justin that the design appears sound as long as assembly experience and/or instruction is adequate. Let's not forget that this is a 2way street though. The better design needs less assembly experience. I'm just trying to be fair here, that's all.
Now, it does look like this is not Ernie's failure here anyway. But, I'm still not convinced it was the servo. Yes, it looked weak in the video but I don't know what it looked like from new. Yes, I'd replace the servo but I'd still be weary.

Oh, and BTW, I do think it is a sexy looking heli. A bit long in the neck....but sexy indeed.

Team POP Secret

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05-29-2013 07:48 AM  5 years agoPost 46
RogerRabbit62

rrVeteran

Thuerigen germany

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The AVANT is a cool looking heli, especially with the canopy the OP had on.
But that is just my opinion - others might like different looks.
Same on women. If we all would have the same taste there....

About the tail servos

The best and reliablest i have so far are

- BLS251 going on up to 6V
- BLS256HV on 2s

the 251 has roughly 120hrs airtime now, no issues even in a fairly vibrating and rich running chopper.

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05-29-2013 10:19 AM  5 years agoPost 47
McKrackin

rrProfessor

Lucasville,Ohio

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Yes, it looked weak in the video but I don't know what it looked like from new. Yes, I'd replace the servo but I'd still be weary.
Right...I'll just scrap the whole heli then

You would have to go back several years to see what that $65 servo was like new.

It was the servo...I was there and saw it fail...I am here now turning a standard servo with two fingers with no resistance while powered up.

Why be "weary" about it? It's hardly strenuous activity.lol....
Fix it and move along.

I literally never use the word literally right.

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05-29-2013 11:25 AM  5 years agoPost 48
RogerRabbit62

rrVeteran

Thuerigen germany

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Fix it and fly !

Go get a BLS256HV or a BLS251 and you have a reliable solution.
They never failed me so far.

It will give you a good feeling having the machine up in the air again.
It is a bit different feeling compared to your 130 bird for sure !

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05-29-2013 01:36 PM  5 years agoPost 49
stang281472

rrApprentice

Commack, NY

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Assembling the TT correctly is not "advanced" or anything like that. I would be very worried if someone found that difficult and yet will build a heli. TT ends go on and you use hole in coupler as guide to drill holes in tube for setscrews to seat through metal and then put setscrews in and add a drop of thin CA where tube goes into coupler. Done and bullet proof. ONLY way ends slip is when you just tighten setscrews against metal and dont drill the holes instructions tell you to do. I have the same TT going through 4 crashes.

As Justin said if built to the manual you simply will never have ends slip.

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05-29-2013 10:00 PM  5 years agoPost 50
BobOD

rrElite Veteran

New York- USA

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Being weary does not mean scrap the heli. And I couldn't tell in the video how strong your fingers are.
Anyway, I'd be weary, but you might not.

Team POP Secret

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05-29-2013 10:06 PM  5 years agoPost 51
McKrackin

rrProfessor

Lucasville,Ohio

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Leary? lol...

I literally never use the word literally right.

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05-29-2013 10:08 PM  5 years agoPost 52
McKrackin

rrProfessor

Lucasville,Ohio

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And I couldn't tell in the video how strong your fingers are
If you can turn a powered standard servo...it's junk.
And mine takes little to no effort.

A long neck bottle cap is ten times harder to turn.

The cause of this crash is glaringly obvious.

I literally never use the word literally right.

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05-29-2013 10:36 PM  5 years agoPost 53
BobOD

rrElite Veteran

New York- USA

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Oh yeah, is leary the better word...or is it leery? LOL.
A long neck bottle cap is ten times harder to turn.
Ah, now that we have a measure, I'm not so wary.
But, now I'm weary.

Team POP Secret

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05-29-2013 10:41 PM  5 years agoPost 54
McKrackin

rrProfessor

Lucasville,Ohio

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lmao...Glad I could help Bob

I knew that most of us would understand the bottle cap comparison

I literally never use the word literally right.

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05-29-2013 10:44 PM  5 years agoPost 55
BobOD

rrElite Veteran

New York- USA

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I only have pull tabs here at the moment but figure that's about half the long neck cap, so 5 times the servo.

Anywho, to get back off topic...
Some may find her sexy, but the look isn't really for me.

Team POP Secret

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05-29-2013 11:12 PM  5 years agoPost 56
McKrackin

rrProfessor

Lucasville,Ohio

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lmao...Now THAT'S a longneck.

I literally never use the word literally right.

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05-29-2013 11:17 PM  5 years agoPost 57
BladeStrikes

rrElite Veteran

Shelby TWP,Mi

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Yup,that tail servo is junk..I had two Futaba S9254's and one Align DS620 do the exact same thing..They start loosing torque and can't hold anymore..Let the heli sit powered up with your finger resting on the servo enough that it buzzes for a min,then try moving it again..The servo will almost move like it has 2-3 volts run to it,will move SUPER easy.
I know you run 6.6V so if you don't have a tail step-down,put one on it..The tail is always working,100000X more than the other servos and they don't have alot of torque.They also run warmer than the rest of the servos so the more power to put through them,the hotter they get..Well thats if you don't end up going with a HV tail servo..
Just looking out and sorry about the damage..

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05-29-2013 11:24 PM  5 years agoPost 58
McKrackin

rrProfessor

Lucasville,Ohio

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I agree Lon and thanks.

I'm definitely going HV.

I just realized a huge brainfart I'm guilty of BTW....

I use an AR7100R...Right?
It has a built in voltage regulator...Right?

One big problem though...With FBL,you plug the servo jumpers from the RX to the FBL unit.

My throttle and tail are coming from the 5.2 volt side of the RX.
BUT...The BeastX takes power from ALL the jumpers so the tail servo is actually getting full voltage.

I have been switching from LiFe to lipo while charging so the servo is on 8.4 volts more than half the time.

The throttle servo is getting 5.2 volts regulated but any servo plugged into the FBL is getting the highest voltage going into the unit.

I literally never use the word literally right.

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05-30-2013 05:43 AM  5 years agoPost 59
RogerRabbit62

rrVeteran

Thuerigen germany

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HV is a solid choice.
brushless on tail is a solid choice also.

The 1290 might have been fried at 8.4V, i am with your opinion in that electronic setup.
The spectrum people might have included a warning regarding that topic on the use of LV rudder servos of FBL units with their rudder voltage regulating RX in the manual.

If you stay savöx i have read in the german forums that people are pleased with the 2272 in the 700N birds.
I like futaba a little more because i have very good reliability experience with their stuff.

I am very pleased with my bls256hv so far.

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