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Titan X50 Thunder Tiger Titan X50 Helicopters


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Old 06-10-2014, 05:27 AM   #1 (permalink)
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Default How much play in your torque tube gears?

I am seeing quite a bit if play in my system. I don't think it's excessive backlash either. I think there is a good bit of play in the drive lugs engagement to their mating sockets in each end. Is this common?

Heli flies like it's stolen though! I love it!
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Old 06-10-2014, 10:13 PM   #2 (permalink)
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Default Re: How much play in your torque tube gears?

I found that on mine I had to keep the TT ends pretty tight or they would slip a little and it would cause the holes to enlarge over time. I keep my backlash pretty loose and it doesn't seem to affect performance.
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Old 06-12-2014, 12:04 PM   #3 (permalink)
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What is to tighten on the TT ends?
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Old 06-12-2014, 01:57 PM   #4 (permalink)
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Default Re: How much play in your torque tube gears?

My TT ends are bolted to the tube. If those bolts arent tight then the TT ends will slip causing additional play. Over time that play will cause the holes in the tube to stretch making the play worse. I had to replace a TT once because of this. You have to remove the TT from the boom to get to the bolts.
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Old 06-23-2014, 08:00 AM   #5 (permalink)
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OKay. That's a pain.


I should check mine though. One observation I've had with the X50 compared to other birds I've owned is that it does need some maintenance attention to the fasteners. Some of mine seem to need retightening more frequently.

I think while my TT is out, I will want to shim the rear TT bevel gear as well. Anyone know what inside and outside diameter shim would be needed? TT does show a shim in the manual, but my rear TT bevel gear can move in and out a bit, which adds play. I will need a shim of around .2mm or so.
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Old 08-04-2014, 06:20 PM   #6 (permalink)
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Hey Rob,
My rear TT bevel gear has ~ 0.2 mm (0.25 mm max) of play. I was looking at trying to reduce this as well as it will clear up quite a bit of backlash.

I'm considering this because pitch pumps during my maiden flight resulted in huge tail shudders that would violently shake the entire heli. Adjusting gyro gain did not help. Ran without any other vibs for the short time I had it up.

FYI: Shim dimensions would be 18mm OD, 15mm ID, xx thickness The 15mm dim could go a little smaller.

First I will reassemble and see how changing out the main blades from 623 to 600 and going back to the stock tail blades works out. My current tail blades are 95mm carbon fiber and maybe too stiff?
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Old 09-16-2015, 04:12 AM   #7 (permalink)
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Argg dbl post dbl facepalm
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Old 09-16-2015, 04:13 AM   #8 (permalink)
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My bad. Sorry, posted wrong reply to the wrong forum
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Old 09-22-2015, 05:43 PM   #9 (permalink)
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Easy. Go belt drive.

Seriously though it is an awesome flying heli. Much prefer it
To my goblin 500.

I'm running a Ys56 which hauls ass, and have the opportunity to pick up a ys60 on clearance. I have acquired a stack of parts to keep mine flying for a good while too.
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Old 09-27-2015, 02:16 PM   #10 (permalink)
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I liked mine too, but when parts became in question, and I needed a new engine, I opted out. Best wishes, guys.
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