Showgun spinning!!!!

[Tresguey]

well i bought a shogun 400 over a year ago when they first came out.....before the bevel gear. stripped a few gears before it could gett off the ground. so i moth balled it....today i went and bought the bevel gears for it and they dont strip...however the heli wants to rotatecounter clockwise even with full rudder inputs. the throw on the tail rotor is as far as it goes and still wants to rotate counter clockwise.....im thinking the tail rotor is not spinning fast enough??? do i have to change the tail input gear out as well??? are there less teath for the bevel gear set up??? my buddy just bought the Sabre and is kicking my butt!!!! and i cant even get the Showgun to get off the ground. any help will be great.

[Tresguey]

anyone have any clues? :arggg:

[capebob]

I guess that your servo and/or gyro is operating backward.

Bob

[Tresguey]

the servo and gyro check out good.....it just wants to torque spin even if i try to correct it with full right rudder.

[capebob]

Then I don't have a clue. Assuming that the tail blades are rotating counter clockwise and the gears all mesh it has to be a set-up problem. I had a Shogun V1, now retired, with the bevel gears and the tail held with no problem.

Bob

[Kenji]

I bet the gyro is backwards too. Or tail servo is froze.

[Tresguey]

nope everything is running correctly....i see the tail rotor move when i give it left or right rudder. tyhe servo throws thw tail rotor to its fullest.....just doesn't seem to be enough air flow to keep it straight.......i was told by another person that tight gears may be the cause......but it seems to me there is no binding......i'm almost ready to tie it to my Raptor just to get it in the air....LOL :dontknow

[capebob]

I understand that the servo is throwing the "tail rotor to its fullest", but is it going in the right direction? Also, your head speed may be too low, but I think that unlikely.

Bob

[Tresguey]

yeah the servo is going the correct way....and as far as head speed....since its direct drive wouldnt it be all linked together? or may i have to change the gearing?.....i may just try the belt drive conversion as a last resort. :arggg:

[capebob]

If your head speed is too low you will have a lot of torque and very little tail rotor force to counter the torque. Try increasing your head speed which will in turn increase the effectiveness of your tail rotor. Also, just an after thought, make sure your tail rotor is spinning in the proper direction, counter clockwise when facing the rotor from the right side of the helicopter. One more thing, It's possible that one of the gears is spinning on it's shaft. Make sure that all the gears in the tail rotor drive train are secure on their shafts.

Bob

[Kenji]

Just for giggles, rotate your gyro. Even though it may apear that it is moving side to side which I'm sure it is. TRust me if eveything seems to be okay gear wise and the headspeed seems to be correct the only thing left is the gyro is backwards. I'm sorry if I'm pushing this issue but I have been there and done that. Rotate it 90 deg. everytime you start it up untill the tail holds. And hell, if that's not the problem you will wind up where you started and no hrm done.

[Tresguey]

thanks guys for all the help......however i am still having the same problem....as far as head speed....i can give it full throttle and full right rudder and it still wants to spin.....it slows down when i give it right rudder but never stops......i have noticed that the tail rotor is a little bigger on the new shoguns.....i may try that along with the belt drive kit........i really think its something to do with the gearing from the first shoguns to the next generation with the bevel gear....i dunno :?:

[mike5334]

Just in case, just try reversing the gyro. It won't hurt anything, and you can always set it back.

[Tresguey]

Well, i reversed the gyro, then the servo. and tried every variation i could....any other thoughts on this before i take it out and shoot it with my Armalite .50 cal?

[Kenji]

I have no other ideas. Just make a video when you shoot our shogun.

I do have one other. Check the set srews in the grears that are on the drive shaft. they have a habit of eating the cardon rod that they are attached too. Don't forget the video.

[Tresguey]

I was just venting about shooting the Shogun. I really like it and drop a few bucks into it. i will check what you suggested and from there i will just buy the belt drive to see if that solves anything......just an after thought.....i wonder what a LiPo battery would do if you shot it?. speaking of which. i went through 2 LiPo's during this whole ordeal....they over heated while trying to run it.....any thoughts on that? they bubbled up???

[Kenji]

Hey, check your pinion on the motor. I bet that thing is slipping on the motor shaft. That would cause the tail to lose power and for the batt to overheat because of to many RPM's in the motor. Pull it off and reapply with green loctite.

[dalars]

Tresguey,
so what was the resolution to your spinning issue.

It has been an issue of mine, on and off, different issues each time. but always
leads back to your tail blades not doing there job.
Dalars