quick help, please

[Philimon]

Hi folks

A quick question, please. I'm at the field with no experiemced heli flyers nearby and my raptor 50 has a problem with its tail output shaft. Almost as if a bush was missing, the shaft can be slid up and down on its bearings, effectively changing the tail rotors pitch without the rudder servo moving.

Is this normal? Can I try a hover like that?

Thanks
Andrew

[Nutz]

No! Do not fly it if it is not right,
I am going to presume you have a Raptor, depending on what tail you have there is normally a grub screw going either through the tail gear which locks the gear to the shaft or a grub screw going into the tail shaft from the one side which locks a bar that sits in the gear, it is best to strip the tail and check against the manual.

There also a grub screw on the tail hub which locks the hub to the tail shaft

What part of the UK are you as someone local may be able to assist you.

[Philimon]

e

thanks for the quick response.

yes, I've got a raptor. I've stripped the tail and checked it againt the manual with someone helping to check, but everything seems assembled as per instructions.

the red gear that the belt drive wraps around is solidy locked to the shaft and its not that gear that's sliding around. rather, its the whole shaft hats sliding up and down, almost as if I was supposed to locktite the bearings to the shaft. of course, i've not done that.

any ideas?

[Made2Fade]

It shouldnt slide if the red gear is attached properly... unless im readin this wrong.
Cant remember exactly but i think its held on with a pin or grub screw.
Lee

[Made2Fade]

Just looked at the manual... are you not missing the pin that goes through the red gear and shaft???
If its not that then it could only really be the grub screws that sit behind the tail blades in the grips.
Lee

[stumpy]

you have the two pieces of the red gear assembled wrong.

make sure the radiused edge fits toward the belt.

ask me how i know

[jimbob]

How do you know Stumpy?

[stumpy]

How do you know Stumpy?

if i tell you i will have to kill you

[Jamez]

Ah but you could tell me

[stumpy]

it was 3d bashers fault!

[ChrisB]

Sounds like the red gear is wrong or pin missing,either way flying it would be silly

[Philimon]

Hi Folks
Thanks for the help. I'm back at home now.

I took off the tail hub and checked everything against the manual. From what I can see, everything was assembled correctly. The pin is through the red gear and the grub screw was in the output shaft pinning that in place.

Also, it did appear that I had assembled the two pieces of the red gear correctly - certianly the orientation of the assembled piece is as per the manual.

For clarity sake, the following picture shows what I'm referring to. Note the gear around which the belt drive is wrapped is further left in the one picture. This is *not* caused by the gear sliding on the shaft. Rather, it is caused by the shaft sliding in the direction of the arrow in its bearings.

What is supposed to stop this shaft from sliding left to right, as per the pictures below?




Thanks for the help.

Andrew

[Philimon]

Ooops..

Going through Raptor-technique revealed the following image:


I've got that the right part the wrong way around

(image from http://www.raptortechnique.com/manua...-50_page20.htm)

Looks like you guys were right. Thanks again.

[Made2Fade]

knew it was summit to do with the red gear.... lol
Glad ya sussed it, ya can go have fun flying it now.
Lee

[Nutz]

Yer, those red gears suck, if it fails get a QUK tail, also if you are
running high head speed I would advise changing the tail hub, I have heard bad things about them.............never had the problem personally but I replaced mine never the less.