RunRyder RC
 6  Topic Subscribe
WATCH
 1 page 862 views
Scorpion Power Scorpion Power
Helicopter
e-
Blade
Blade 400 › 3D Help with blade 400
05-14-2008 05:20 PM  9 years agoPost 1
4rcefedmkiv

rrNovice

annapolis

My Posts: All  Forum  Topic

I recently crashed my blade 400 and am in the process of fixing it. A few hours and a few $$ later its almost back to the flight line, but the swash is sitting far to the left and forward a little bit. I guess my question is what is causing this and how to fix it? any help is appreciated

"People fly airplanes.... Pilots fly helicopters"

PM  EMAIL  Attn:RR  Quote
05-14-2008 05:23 PM  9 years agoPost 2
JeffM1999

rrApprentice

Erie, CO

My Posts: All  Forum  Topic

You can either adjust the rod lengths by twisting them or you can remove the servo horn and re-zero the servo. Make sure you don't have any sub-trim or trim set up in your radio either.

PM  EMAIL  GALLERY  Attn:RR  Quote
05-14-2008 05:53 PM  9 years agoPost 3
4rcefedmkiv

rrNovice

annapolis

My Posts: All  Forum  Topic

Ya the re-zeroing the servo is what i was thinking too. All i have to do is un-screw it and recenter it ? sorry if thats a stupid question but i am really not sure

"People fly airplanes.... Pilots fly helicopters"

PM  EMAIL  Attn:RR  Quote
05-14-2008 06:00 PM  9 years agoPost 4
JeffM1999

rrApprentice

Erie, CO

My Posts: All  Forum  Topic

No problem at all.

Set your sticks in the center and ensure that you have all trim tabs centered. Unscrew the servo horn screw and move the servo that is the furthest off level to as close to level as you can get it. The servo shafts are splined, so it kinda clicks into a spot where it wants to sit. Then put the screw back in and repeat on the next servo.

You can fine-tune it by moving the trim tabs on your transmitter or adjusting the lengths of those rods going from the servos up to the swashplate. Just pop them off with some ball link pliers (hopefully you have some, if not they are a really good investment and you local hobby shop should sell them) and then turn them until they are the right length.

Hopefully that helps. Good luck with it and don't be afraid to ask if you have any more questions.

PM  EMAIL  GALLERY  Attn:RR  Quote
05-14-2008 06:03 PM  9 years agoPost 5
Ashane

rrNovice

Winter Haven, FL

My Posts: All  Forum  Topic

Did you have to replace the cyclic servo's gears?

If you didnt, then most likely thats the cause, as if one of them is stripped the servo wont hold its weight (so to speak).

If you did replace them, then yeah what Jeff said.. you'll need to make sure its on the correct spot, and basically relevel the swash again.

PM  EMAIL  Attn:RR  Quote
05-15-2008 02:05 AM  9 years agoPost 6
4rcefedmkiv

rrNovice

annapolis

My Posts: All  Forum  Topic

No i havent replaced any gears yet, but i will keep that in mind. Sooner or later i want to upgrade the servos all together. Right now i am just trying to get it back in the air. But thanks for all the help, its good not to get flamed ( so to speak ) for asking newbie questions.

"People fly airplanes.... Pilots fly helicopters"

PM  EMAIL  Attn:RR  Quote
05-15-2008 02:51 AM  9 years agoPost 7
Ashane

rrNovice

Winter Haven, FL

My Posts: All  Forum  Topic

Odds are then that its stripped a gear if when you plug in the lipo and the swash dosent center.

The gears strip on just about any crash, even a minor tip over your likely to lose a few teeth.

Easy way to tell, power it up.. move the stick all round. If any servo isnt responding in its full range, you know you've got either A) bad gear set or B) Servo itself.

Replacing the gears is pretty simple really. They only go on one way, and its damn near impossible to put them on wrong. Replace, put it back in and relevel the swash (either via eyeball or swash leveling tool.. 2nd is best obviously. Use sub trim to get it just right on whatever cyclic servo went out)

PM  EMAIL  Attn:RR  Quote
05-15-2008 02:40 PM  9 years agoPost 8
speeddemon370

rrVeteran

Spruce Grove,​Alberta, Canada

My Posts: All  Forum  Topic

Imo, it dosen't sound like you have stripped gears. It sounds like you're just not set up right. Do what Jeffm1999 said. Make sure you're servo's are as close to 90deg from the linkage as possible when you put the horn on and all your sticks and trims (as well as subtrims) are set to zero. This is usually the part where I'll use my subtrim to get exact 90deg on the servo horn for unfortunately the splines on the horn kinda shift it one way or the other just a touch. Then, adjust you're linkages on your swash so that midstick gives you 0deg pitch and the swash is level. At this point I usually hover the thing an inch or so off the ground and see where I need to trim it. Fresh after a "rebuild" as you stated, I would reccomend trying to make the adjustments with the linkage and not the trim or subtrim wherever possible. CCPM's work best with NO trim or subtrim, as a general rule of thumb any more than 5 points off normal and you're asking for something to not work the way it should when you get to the end of your travel. Lemme know if this works for ya.

with 2 ears and 1 mouth you should listen twice as much as you talk

PM  EMAIL  HOMEPAGE  Attn:RR  Quote
05-15-2008 04:57 PM  9 years agoPost 9
Ashane

rrNovice

Winter Haven, FL

My Posts: All  Forum  Topic

Speed,

Just curious...

If the servo's have not been off the horn, how could they need to be re-adjusted now?

He most likely broke/bent the blades, blade grips, f.shaft and maybe main shaft....

Replacing all those, none of which should make the swash tilt at a angle.

The only way that swash is going to tilt like that with power would be if he had *removed* the servo horns and put them on incorrectly, or if the servo itself is stripped gears and cant hold its weight for the cyclic... correct? :X

Am I missing something?

PM  EMAIL  Attn:RR  Quote
05-15-2008 07:42 PM  9 years agoPost 10
tommy_b_o_y1

rrNovice

knoxville, tn

My Posts: All  Forum  Topic

you can skip gears without stripping gears. or the servo motor can slip in some fashion to bring the servo out of center...but easily re-centered.

PM  EMAIL  Attn:RR  Quote
05-15-2008 08:07 PM  9 years agoPost 11
speeddemon370

rrVeteran

Spruce Grove,​Alberta, Canada

My Posts: All  Forum  Topic

During a rebuild I pop my servo horns off and repositon them as I go. I can't find where he said he didn't. I'm not saying stripped gears couldn't be the issue, I'm just saying that I'd check the basics before we start tearing apart servo's. He also could have inadvertantly lengthend or shortened or bent a link. There's alot of things that could cause this, a stripped servo could as well.

I'm just trying to get him to check the simple obvious solutions before you get a noob tearing apart a servo. I know it's not difficult, but it's not that easy either and could be unnecessary. If he tried all the stuff from my last post and still has issues then yeah, it's a stripped servo, BUT, even if the servo is stripped he's STILL going to have to do the stuff I mentioned so why not mention it?

with 2 ears and 1 mouth you should listen twice as much as you talk

PM  EMAIL  HOMEPAGE  Attn:RR  Quote
05-15-2008 08:47 PM  9 years agoPost 12
Ashane

rrNovice

Winter Haven, FL

My Posts: All  Forum  Topic

Ahh,

Never skipped a gear on the Blade without entirely ripping out damn near every tooth.

My opinion of the stock servo's on the Blade is about as good as a pile of steaming you know what.

Thus why I asked ;P

Powering it on and seeing if all servo's are moving their full range would probably be the quickest way to tell if the issue is with servo gears/servo itself, or issue with the linkage between the servo's and swash...

Sorry, just wasnt sure you could ever skip a gear on the blade's stock servo without stripping them. Possible on metal I know, but those things are pretty cheap :X

PM  EMAIL  Attn:RR  Quote
05-16-2008 12:28 AM  9 years agoPost 13
4rcefedmkiv

rrNovice

annapolis

My Posts: All  Forum  Topic

Ok pretty sure i have that issue all sorted out. however i took it out for a test flight and now the tail starts to hold when i correct for the yaw from the main rotor but then goes crazy and wont hold . I have replaced the boom, the shaft that controls the tail rotor from the servo and the belt.

"People fly airplanes.... Pilots fly helicopters"

PM  EMAIL  Attn:RR  Quote
05-16-2008 12:36 AM  9 years agoPost 14
tonyn

rrApprentice

orlando florida

My Posts: All  Forum  Topic

In my opinion the blade 400 servos are fine for a newbie....
Here newbies are gonna find that all guys flying 3D will tell you to upgrade. You can strip gears no matter what servo. last time i bought the replacement gears i think they where $4.00 and $8.00 for some hitec 65hb's I don't know you do the math. put in some HS 65mg's and now its more cuz you just blew the motor or bend all your linkages. I guess we all have our opinions right?

You will learn 4rcefedmkiv just takes time And remember there are no stupid questions. Just stupid answers lol

Flying

PM  EMAIL  GALLERY  Attn:RR  Quote
05-16-2008 02:15 AM  9 years agoPost 15
speeddemon370

rrVeteran

Spruce Grove,​Alberta, Canada

My Posts: All  Forum  Topic

Need a more accurate description of what the tail's doing. I don't quite get it. What was your swash fix?

with 2 ears and 1 mouth you should listen twice as much as you talk

PM  EMAIL  HOMEPAGE  Attn:RR  Quote
05-16-2008 03:09 AM  9 years agoPost 16
4rcefedmkiv

rrNovice

annapolis

My Posts: All  Forum  Topic

To fix the swash i just re-zeroed the servo horns for now. As far as the tail goes, When i throttle up the helicopter the tail starts to spin, so i apply rudder in the opposite direction. It will stop the yawing for a few seconds then its almost like a total LTE. Just goes into an uncontrolabe spin .

"People fly airplanes.... Pilots fly helicopters"

PM  EMAIL  Attn:RR  Quote
05-16-2008 03:48 AM  9 years agoPost 17
speeddemon370

rrVeteran

Spruce Grove,​Alberta, Canada

My Posts: All  Forum  Topic

Make sure nothings jammed up with the push pull link that controls the tail pitch. Move all that stuff around with your hands and make sure it operates freely. Also, check to make sure you didn't accidentally unplug or loosen a plug on the gyro or tail servo. Reversing the gyro has been known to happen in a crash as well. Make sure the tail servo is mounted securely with no play or "slop" and check the tail pitch yoke for the same thing, play or slop. Yoke binding up on the tail shaft will do this as well. Make sure it slides in and out smoothly.

with 2 ears and 1 mouth you should listen twice as much as you talk

PM  EMAIL  HOMEPAGE  Attn:RR  Quote
05-17-2008 12:03 AM  9 years agoPost 18
smokin3000gt

rrNovice

Estero, FL

My Posts: All  Forum  Topic

Hey man, sounds like a loose tail belt. Loosen the four screws that hold the tail boom tight in the frame and the boom supports, pull the tail out and retighten screws. Mine was doing the same thing when I was trying to set my pushrod/gyro. Thought it was the linkage but the belt was slipping.

PM  EMAIL  Attn:RR  Quote
WATCH
 1 page 862 views
Scorpion Power Scorpion Power
Helicopter
e-
Blade
Blade 400 › 3D Help with blade 400
 Print TOPIC  Make Suggestion 

 6  Topic Subscribe

Monday, November 20 - 11:45 am - Copyright © 2000-2017 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online