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Old 04-20-2018, 03:06 PM   #1 (permalink)
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Default tail rod guide?

does anyone feel the 380 needs a tail rod guide ?
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Old 04-20-2018, 04:53 PM   #2 (permalink)
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does anyone feel the 380 needs a tail rod guide ?


Not needed. Itís short and rigid enough.


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Old 04-20-2018, 06:13 PM   #3 (permalink)
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Not needed. Itís short and rigid enough.


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Old 04-20-2018, 07:33 PM   #4 (permalink)
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Default rod

doesnt seem rigid enough. maybe if you're just prancing around it might be.
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Old 04-20-2018, 07:37 PM   #5 (permalink)
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Default rod

at 3300 plus hs i think im seeing an issue with it on aggressive stops in pirouetting aggressive stops that pitch pre-comp isn't fixing
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Old 04-21-2018, 12:08 AM   #6 (permalink)
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It doesnít need one.
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Old 04-21-2018, 01:24 AM   #7 (permalink)
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I flew hundreds of flights with and without one. And concluded it had no effect and wasnít needed.
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Old 04-21-2018, 06:26 AM   #8 (permalink)
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Default rod

I think otherwise. slightest pressure from my finger on middle of it and its flexing... so if you flew it with and without one then that means there was one. so send me it if you dont need it. id perfer to have one.
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Old 04-21-2018, 09:55 AM   #9 (permalink)
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I think otherwise. slightest pressure from my finger on middle of it and its flexing... so if you flew it with and without one then that means there was one. so send me it if you dont need it. id perfer to have one.


Onthesnap helps with testing. Iím sure he had it on and off for testing purposes. If you have ever seen him fly as I have you know he does plenty of high speed reversing.

You may want to check your mechanics and belt tension. I have also have had mine blow out and took me months to find out my epoxy wasnít holding and the rod was separated from the ends but when I would land the servo pushed it back together and would close the gap. It was still tight as it took some force to pull them apart. The only time it was a problem was under heavy extreme collective maneuvering. Initially I blamed the kst servo and finally found it in a crash after installing bk servo. I have switched to jb weld for all my epoxy needs and has been treating me well so far.


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Old 04-21-2018, 11:20 AM   #10 (permalink)
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I have switched to jb weld for all my epoxy needs and has been treating me well so far.
The strongest epoxy I've found is 3M DP460 (slow cure) and DP420 (fast cure). The stuff is really amazing, blows everything else away. Down side is you need a special dispenser and it's expensive, worth it though.
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Old 04-24-2018, 01:44 PM   #11 (permalink)
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I think otherwise. slightest pressure from my finger on middle of it and its flexing... so if you flew it with and without one then that means there was one. so send me it if you dont need it. id perfer to have one.
That’s not how the load is applied.

Don’t know if you’ve flown all the 380’s like I have. But absolutely none have the tail performance of the p380.

You can invent a problem if you like. But all the engineering and testing done led to no need for the tail rod support. We tend to do purposeful engineering. And not do design based on asssumptions.

The rod diameter and length matters.
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Old 04-24-2018, 06:55 PM   #12 (permalink)
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I think otherwise. slightest pressure from my finger on middle of it and its flexing... so if you flew it with and without one then that means there was one. so send me it if you dont need it. id perfer to have one.
Interesting. Do you do this while flying? Opens up a whole new set of issues.
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