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Next-D › Furious piro rate.... in flight stripped front bevel gear on tail stop!!
04-22-2009 01:54 AM  9 years agoPost 1
JSX

rrApprentice

France

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Hi all : )
I had an issue today. I was flying on my second pack, when I started a furious piro: Mini-G, 150% ATV. When I stoped the tail, "hoho, what a bad sound this little bird do...." the front bevel gear stripped. I immediately switch thro hold and then made an autorotation. It was hard because the heli continued to rotate from its 20 meters altitude. But no damage : ) Only a few scratches on the canopy, certainly spindle shaft, and of course front bevel shaft >> the vertical one, and the tail boom one.
Exactly the same thing happened last week, but I was thinking it was because I made an hole in the U plate for my Gyro wiring >> there was black plastic in gears after the in flight issue.
But this time, there was no reason. My tail gear transition is new, and all gear mesh are well setted.
In fact the "guilty" is my TP40A ESC >> so powerful that my ATV on rudder need to be reduced. I will set them to 130/140%, I need to make tests.

If I make a special topic for this issue, it's to express a real wish which has been evocate by others members:

>>>>> Metal front bevel gears as an option <<<<<

In case of shock, tail case bevel gears will broke instead >> 5 mn to replace.
I never broke them, always front ones, which take 15/20 mn to replace, not cool at the field during winter.
And with a such option, I will be more confident with crazy piros which is one of the great thing on this heli, for me. It's just a good fun to do them : )

So Brian.... do you think is it possible to do these optional metal gears? Or just think about this possibility?
Please

Thanks
JSX

~¤°Rave~4S/350¤Trex250°¤~

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04-22-2009 02:39 AM  9 years agoPost 2
inkspot1967

rrProfessor

Cranston Ri

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i for one dont get why would you set the ATV'S to 150% and do 100mph piro's and hard stops all your doing is abusing the heli, then when something happens everyone is quick to blame the heli.

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04-22-2009 03:01 AM  9 years agoPost 3
USNAviationjay

rrElite Veteran

Houston Tx USA

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I agree with Inky.. you abused it with high stops and even on a 600 it will strip if you do that..

you have to adjust it to stop softer. there is nothing wrong with the heli design.

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04-22-2009 03:40 AM  9 years agoPost 4
HeliVIG

rrApprentice

Hearne, TX USA

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JSX,

The gears are not indestructable, if you do the "blur" pirouettes for much longer than about 3 seconds you can damage the gears from heating. They basically melt a little under extreme heavy loads and can fail easily on the stop. Normal pirouettes and even fast pirouettes should be fine. It is only the blur pirouettes that are a concern.

We are working to make the gears as strong as possible. I would also like to abuse the gears forever and have them hold up no matter what. Metal gears might work, but they could have other issues as well.

We are working on several options and will let everyone know once the "indestructable" version of the gears are available.

Until we have those, just please check that your gear mesh is good, and do not do "Blur" pirouettes for longer than a couple of seconds. Note the ones I did on the videos we relatively short in duration. Also if you tend to do blur piros a lot you might want to watch the front vertical gear for wear.

I agree that it is the front vertical gear that tends to fail and also takes out the front tail boom gear when there is an issue. The rear gear box gears almost never fail and neither do any of the other gears. The tube drive also tends to hold up well. So it is the front gear that should be watched and checked if you have any concerns.

Overall the standard gears should hold up well for everyday flying and even relatively abusive flying.

Curtis

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04-22-2009 04:02 AM  9 years agoPost 5
JSX

rrApprentice

France

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Thanks Curtis for your precise explanation. These pirouettes were more than 2 seconds, perhaps 5.... so I understand. I will be more careful.

For Inkspot and UsaA.... where have you read I "blamed" the heli design? I'm relatively new to this hobby, and have to learn where are the limits. So don't be too quick to blame somebody which report an issue.
I'm not stupid and can understand things, just need the good advices. So perhaps you just can try to provide those ones to guys like me : )
If Curtis explain things like he has done, I understand easily. Because there are technical informations.
Don't forget I'm certainly not the only heli flyer to buy a Rave as a second CP, and which need to have good advices on how to fly it properly.
This is a fantastic heli, I congratulate me everyday to have buyed it : ))
I have lot of fun with my Rave, I just report an issue, and know now where are the limits on blur pirouettes.
And for Curtis, I never have issues during flights before, it was the first time. I just can imagine how it can be hard to find the right plastic strenght.
By the way, thanks for this heli, I love it and it helps me to improve my skills day by day : )

JSX

~¤°Rave~4S/350¤Trex250°¤~

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04-22-2009 04:30 AM  9 years agoPost 6
Funky Trex

rrElite Veteran

Westerville, OH - USA

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We are working to make the gears as strong as possible. I would also like to abuse the gears forever and have them hold up no matter what. Metal gears might work, but they could have other issues as well.

We are working on several options and will let everyone know once the "indestructable" version of the gears are available.
Thanks Curtis!!! The Rave just keeps getting better and better!!

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04-22-2009 05:30 AM  9 years agoPost 7
inkspot1967

rrProfessor

Cranston Ri

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But this time, there was no reason. My tail gear transition is new, and all gear mesh are well setted.
In fact the "guilty" is my TP40A ESC >> so powerful that my ATV on rudder need to be reduced. I will set them to 130/140%, I need to make tests.

If I make a special topic for this issue, it's to express a real wish which has been evocate by others members:

>>>>> Metal front bevel gears as an option <<<<<
im just stating the obvious and in the above statement you are blaming the gears , your esc has nothing to do with it at all, the power there has nothing to do with the tail you putting the ATV'S to 150% and doing blurr piro's and hard stops caused it.

i have never stripped a front gear on any of my 2 Rave's even in a crash but i dont do blurr piro's i fly mine pretty hard and again no problems. but they are not indestructable if you abuse it a test the limites you will find them in any heli out there.

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04-22-2009 05:42 AM  9 years agoPost 8
JSX

rrApprentice

France

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Thanks for this pleasant and useful precision

~¤°Rave~4S/350¤Trex250°¤~

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04-22-2009 06:02 AM  9 years agoPost 9
inkspot1967

rrProfessor

Cranston Ri

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im not trying to offend you in any way ,but you should think before posting a problem when really you are the one who made it happen.

just like when you said the landing gear was way to easy to break and is a issue, but you admitted you cant land very well and your buddies kid you all the time about it. again blaming the heli.

live up to your own mistakes and dont blame something else for them.

i read your post here and i say to myself not this guy again......lol

you seem to have repetative posts of issues that lead right back to you. but we are here for you to try and help if we can.

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04-22-2009 06:28 AM  9 years agoPost 10
JSX

rrApprentice

France

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I posted about my "issues" only a few times. The rest of my time, I fly and that's all... I'm not the style of guy which complain on forums for everything all the day. I always trying to resolve my problems by myself before. If I can't, then I go on forums. I made a mod for my personal issue on landing gear since I realize I was faulty, and just made a post to share my idea. And I made this gears post to report my problem. How can I know there are limits??? Yes I can make mistakes and crash. So forums have no utility for guys like me, I must find knowledge by myself. Don't you remember you were a newbie too???????? And... is it not possible to write I don't like a thing on the heli? Is there freedom here? Or is it just a place for make posts which say NextD is the best and the Rave is fantastic? So laugh on me if you want dear Inkspot, when I'll read your answers to my posts in future I'll say to myself... not him again
Jsx

~¤°Rave~4S/350¤Trex250°¤~

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04-22-2009 06:32 AM  9 years agoPost 11
JR-ric

rrVeteran

newport news VA

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So laugh on me if you want dear Inkspot, when I'll read your answers to my posts in future I'll say to myself... not him again
ouch!

Ricardo Maldonado
Team Curtis Youngblood Enterprise

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04-22-2009 11:08 PM  9 years agoPost 12
Sky Dancer

rrVeteran

Bryan, Texas

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You know guys, I find it very useful to hear all issues anyone has with the Rave because it simply allows me to learn more from others. It doesn't matter if it's something as simple as the proper gear lash adjustment technique, or the best way to complete an assembly or something new someone's tried.

I think we all probably enjoy these threads and a great thanks goes out to Curtis and Brian for helping us enjoy our Raves and keep them flying.

Maybe we should start a "HINTS" and "TRICKS" thread to consolidate what we've all learned "NOT TO DO"!

Don C

Keep up your rotor speed !

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04-22-2009 11:16 PM  9 years agoPost 13
jyzoom

rrApprentice

Singapore

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something new
Yes...I learn something new. Actually this blurr and crash thing happen to me and it is my 1st crash and I balme it on my skill to control it. Now I realise it might not be, just that I have too much fun demo the BLURR....

Jonathan

Goblin 700, Furion 450, Synergy E6

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04-23-2009 12:28 AM  9 years agoPost 14
JSX

rrApprentice

France

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I totally agree with you about this idea of special topic. Now it's more evident for me that bevel gears have natural limits on blurr pirouettes, cause I understood why >> I just learned more on heli thing.
A such sticky topic will help everybody to set properly their Rave, and avoid them to have problems. There are some other tricks on gear mesh, linkage lenght, washers etc. An "evolutive manual addendum" topic : )
To have the best information for everyone : )

~¤°Rave~4S/350¤Trex250°¤~

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04-23-2009 12:58 AM  9 years agoPost 15
rexxigpilot

rrProfessor

Florida

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JSX,

Your posts were perfectly OK with me. And it didn't seem like Curtis was offended by this one either. You will find that people get very defensive about their helis - whether its a Raptor or a Rave.

Thanks for sharing your experience. I haven't had my gears fail from blur mode piros yet, but I was lucky enough not to hold the piro for over 1-2 seconds. Thanks to Curtis' candidness and your post, now we all know better than to hold blur mode for more than 3 seconds.

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04-23-2009 01:24 AM  9 years agoPost 16
JayL

rrVeteran

Leesburg GA

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is their a way to set some delay in the mini g i striped my rear tail gears in flight last weekend the front gears look new im not running a real high piro rate but i am flying it hard.

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04-23-2009 01:38 AM  9 years agoPost 17
JSX

rrApprentice

France

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Thanks Rexiggpilot for your post : ) It reassures me
Like I say above, I'm not the guy who complained for everything on forums. I read lot of topics, and try to find knowledge on them, or solutions when I have problems.
I had issues with landing gears, but make a post about my issue learn me that I was the problem: I landed my helis like a pig!!! lol, so I made a solid mod for a moment and worked on my landings, especially on small autos. Now I'm really more smooth. I just ordered stock landing gear set cause I really prefer their look. So... make a topic on my issue learn me where was the problem, and I've done what was a necessity for me: work!!!
With this topic, I learned something else. My last ESC was a CC35 which was less powerful on the -10/4S setup than my new TP40A. I didn't have problems on blurrs pirouettes with the CC. This happened with my new ESC, because HS has increased a lot, making my blurr going too fast. So I was very confused..... I was thinking bevel gears were the problem. I just need to learn. And now I will never make long blurr, and will be as cool as possible on my rudder stick to stop the tail smoothly : )))
And I'm sure some other pilots will be happy to learn blurr fun has a limit to respect

~¤°Rave~4S/350¤Trex250°¤~

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04-23-2009 01:39 AM  9 years agoPost 18
JSX

rrApprentice

France

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JayL, with G-view I think you can tweak deceleration and other things like that.

~¤°Rave~4S/350¤Trex250°¤~

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04-23-2009 02:51 AM  9 years agoPost 19
JayL

rrVeteran

Leesburg GA

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Yeah I need to play with the g view some more once you set the gear mesh do you need to go back and reset if after some flights.

Thanks for the info JSX

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04-23-2009 03:36 AM  9 years agoPost 20
JSX

rrApprentice

France

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No problem : ) IMO, you need to look at your gear mesh like you look at a belt tension: before each flying day. If gears are a little bit used, after a shock, or simply because boom can move a little bit, mesh can need to be adjusted.

~¤°Rave~4S/350¤Trex250°¤~

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