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AlignRC Thunder Power RC
flyboy1985

Senior Heliman

mohnton pa

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made a video today at the field , on how to do a preflight and what to look for , enjoy

Watch at YouTube

going pro , one crash at a time

07-14-2016 09:18 PM
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HeliOCD

Veteran

San Diego, CA

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One bit of advice.. Do a preflight on your so called preflight.

Its all earth!

07-14-2016 10:37 PM
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flyboy1985

Senior Heliman

mohnton pa

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?

I'm not sure I follow

going pro , one crash at a time

07-15-2016 12:21 AM
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banshee rider

Senior Heliman

n.e. illinois

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If you have only 53 flights on that machine and the tail has come loose 4 times
there's something wrong with either the machine or how your doing it
that's an average of once every 12 flights

I have hundreds of flights on my heli's with nothing coming loose
4 times

ageing is manditory maturity is optional

07-15-2016 03:55 AM
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DougsRC

rrProfessor

Mass.

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A couple of minutes of pre-flight check can save hours of fixing and $ later. That being said I am totally guilty of NOT doing a pre-flight check many times and have paid the price---Hindsight is 20/20

07-15-2016 11:50 AM
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Heli_Splatter

Key Veteran

Silver Spring, MD by way of Sidney, Ne - USA

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There is something wrong with that tail piece if it is coming loose that often. Sounds like it is time to replace it.

I have NEVER had that problem. I remind myself of this all the time; once is an accident, twice is a trend, third time is my stupidity for not fixing a very apparent problem.

I do commend you for doing an extensive pre-flight. cudos

07-15-2016 03:18 PM
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flyboy1985

Senior Heliman

mohnton pa

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yea about the tail.,,,
I hadn't tightend the 4 screws all the way.( the ones the lock the boom to the frame piece ) , so inturn , the set screw/bolt in the boom to pin it , moved and created slop , but I caught it before it became a boom replacement or worse

going pro , one crash at a time

07-15-2016 03:54 PM
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flyboy1985

Senior Heliman

mohnton pa

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and my tail pitch slider set screw-- well , I use lock tight , and have good drivers , but every 25-30 flights or so , it may back out just enough to shimmy on the tailshaft,,

I replaced the setscrew with a different company so I'm awaiting to see how this fairs,

going pro , one crash at a time

07-15-2016 03:56 PM
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old nitroman

Senior Heliman

Naples florida

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My problem is getting them out I'm not shy with the lock tight, most of the time I have to use heat. Must not seat right, is the shaft flat spot or a drill dimple?

E5s and E7se, Roban bell 222 800 superscale,450 bell 4 bladed head,gobby 380,180cfx

07-15-2016 04:14 PM
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rcnut

Elite Veteran

Rockford, Illinois

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I had a problem screw come loose a few time no matter how well I cleaned everything. So I used a longer screw and added a nut to help lock it down better...problem solved.

Team Miniature Aircraft
"I love the smell of Nitro in the morning!"
...Citizen 654!

07-15-2016 05:03 PM
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icanfly

Elite Veteran

ontario

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in future use loctite paste instead of the bleedy shyt on the tail hub set screw, use screw drivers/hex drivers to check loose stuff more often than only your fingers wiggling things, use your eyes and instinct to spot anything not right, and the outward tug on the main blades to check for looseness on the feathering shaft.

There's been the odd crash story lately of a disaster attributed to loose screws of one part or another, loose screws being the one major newb failure due to the rush off the bench to go flying, big nono so don't rush.

I had a servo screw come loose this aft on my 450 pro, servo action was wavering until I landed. Screw popped out right while I took out the lipo "now where did THAT come from" I said. Put two and two together and saw no loctite on the screw, I was in a rush to bolt it up after replacing gears last time and forgot thread lock. Almost paid with sloppy cyclic and heli in close proximity to solid objects,

dont rush.

That tail hub set screw can be torqued a little when tightening as long as your using a high quality allen head screw driver, otherwise a torx, heat to remove. Don't want a loose hub at all? when attaching the hub to the shaft slide it past the shaft's flat spot and put a little threadlock on the exposed part of the shaft, then slide the hub into where it will finally stay. I put loctite on an old non slpit lock dfc main rotor hub once, very tough to remove from the main shaft afterward.

07-16-2016 03:37 AM
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flyboy1985

Senior Heliman

mohnton pa

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I use the loc tight (248) glue stick style ...
I only use this stuff , no liquid for this guy,,

going pro , one crash at a time

07-16-2016 03:40 AM
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icanfly

Elite Veteran

ontario

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I admit the vid was informative, nobody saying you have to get every point perfect, pre-flight reminders are always good thing.

07-16-2016 03:49 AM
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helifanatix

Veteran

Fountain Valley, CA

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Tail set screw premature loosening could point to a bigger underlying potential issue:
- excessive vibration
- possible bent component
- this is assuming you're cleaning parts & torquing with quality tools

The assault is a clone of the later versions of the Align 700E. Align had tail vibe issues b/c of the newer tail gear drive ratio. Wonder if they clone that too?!?!

Using a vibration analyzer would be helpful from V Bar

Loctite take on average 3 days to reach full strength.
Although I've used blue thread locker from Loctite (oil to none oil tolerant) to HobbyKing with set time from 20 minutes to overnight with no issues.
As long as you torque it properly with thread locker against the flat spot ... You should be OK

Always Pin the boom to avoid boom from rotating

Also ... FYI
Might want to re-orient your SAT to avoid carbon fiber shadowing

- Scott

07-16-2016 04:16 AM
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flyboy1985

Senior Heliman

mohnton pa

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I use mip drivers so I think there ok?

I think the issue was the set screw , cuz thus far , its seating just the way I put it on , but if it does happen to come back out, I'm gonna go with the tap and die is too big thus not allowing a proper seat the set ,screw,, so if need be ill buy an align tail hub ,

I thought to fully cure loc tight , was 24 hours in a 55+deg or warmer temp?

going pro , one crash at a time

07-16-2016 04:26 PM
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flyboy1985

Senior Heliman

mohnton pa

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about the sat placement,,
my canopy is not carbon fiber ,
and ive also flown far away in cloudy condition , and never ever had a brownout ,
ive gotten 62 flights now and it seems to be just fine

going pro , one crash at a time

07-16-2016 04:28 PM
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flyboy1985

Senior Heliman

mohnton pa

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and about the tail vibe issues,, I don't know if mine has a vibe ,
my tail fin in a hover is not shaking or vibrating so I'm guessing that's ok?>

going pro , one crash at a time

07-16-2016 04:29 PM
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HeliOCD

Veteran

San Diego, CA

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The sat would do better away from any cf. My 500 has it on the skid support.

Its all earth!

07-16-2016 09:40 PM
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flyboy1985

Senior Heliman

mohnton pa

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id imagine you would most likely loose the sat in a crash due to it being so exposed?
anywho I understand how cf effects radio waves, but as said before , its been fine , and same as with all my other helis, so I think ill just keep it for now,

lets say I get a goblin or a forza , than I will move them outside the heli.

regardless , those were all good pointers and tips , thanks for sharing

going pro , one crash at a time

07-16-2016 09:51 PM
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HeliOCD

Veteran

San Diego, CA

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crash? oh, we dont do that..
Crashing takes all the fun out of flying...

Its all earth!

07-16-2016 10:32 PM
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