RunRyder RC
 5  Topic Subscribe
WATCH
 1 page 827 views POST REPLY
02-12-2006 07:22 AM  12 years agoPost 1
rwj

rrVeteran

Kenosha Wi

My Posts: All  Forum  Topic

I have a new MX400 ARF. My pitch lever does not move up and down as freely as I would like. I have adjusted all the links to move without binding. I have checked all of the bearings and none of the screws are cranked on tight. I can see no plastic to plastic friction any where. Is this just normal with this heli if so what can I do to get it to move more freely? Thanks

PM  EMAIL  Attn:RR  Quote
02-12-2006 07:39 AM  12 years agoPost 2
Over Torque

rrNovice

Pocatello, Id.

My Posts: All  Forum  Topic

???
Could you explain a little more with detail? Thanks.

PM  EMAIL  GALLERY  Attn:RR  Quote
02-12-2006 07:49 AM  12 years agoPost 3
Squirrlybird

rrVeteran

Suffolk, Va US

My Posts: All  Forum  Topic

The eccpm upgrade is only $42 at grandrc. Other than that, I dont know what to tell you.

PM  EMAIL  GALLERY  Attn:RR  Quote
02-12-2006 07:54 AM  12 years agoPost 4
rwj

rrVeteran

Kenosha Wi

My Posts: All  Forum  Topic

I do not have the link snaped on the servo yet. When I move the pitch arm up and down by hand I feel some resistence and I don't want this to drain the battery much faster.

PM  EMAIL  Attn:RR  Quote
02-12-2006 07:54 AM  12 years agoPost 5
Squirrlybird

rrVeteran

Suffolk, Va US

My Posts: All  Forum  Topic

Is it hard to move, a little stiff, grinding, stuck? Try lubing it if nothing else. If it is not too bad then see how the servos are working with it. You may just need to loosen something or work it in. I would offer more but I am a ccpm guy as you see from my last post.

PM  EMAIL  GALLERY  Attn:RR  Quote
02-12-2006 07:56 AM  12 years agoPost 6
Squirrlybird

rrVeteran

Suffolk, Va US

My Posts: All  Forum  Topic

I wouldn't worry about the battery drain as much as servo failure if it is bad enough.

PM  EMAIL  GALLERY  Attn:RR  Quote
02-12-2006 07:59 AM  12 years agoPost 7
rwj

rrVeteran

Kenosha Wi

My Posts: All  Forum  Topic

I used a small amount of tri flo lube and it doesn't help. I guess I will take to the LHS on thrus and compare it to some of the other helis. Thanks

PM  EMAIL  Attn:RR  Quote
02-12-2006 08:14 AM  12 years agoPost 8
Squirrlybird

rrVeteran

Suffolk, Va US

My Posts: All  Forum  Topic

Sorry I couldn't help.

PM  EMAIL  GALLERY  Attn:RR  Quote
02-12-2006 02:02 PM  12 years agoPost 9
Dennisu

rrVeteran

Langley, B.C. Canada

My Posts: All  Forum  Topic

rwj

If you are talking about the swashplate not moving up and down without resistance then check the antirotation pin and guide. You may have to sandpaper the inside track of the guide to allow the pin to move freely.

PM  EMAIL  Attn:RR  Quote
02-12-2006 03:17 PM  12 years agoPost 10
rwj

rrVeteran

Kenosha Wi

My Posts: All  Forum  Topic

Ok I will try that.

PM  EMAIL  Attn:RR  Quote
02-12-2006 04:13 PM  12 years agoPost 11
rwj

rrVeteran

Kenosha Wi

My Posts: All  Forum  Topic

That did it thanks!!

PM  EMAIL  Attn:RR  Quote
02-13-2006 02:45 AM  12 years agoPost 12
Aerospacer

rrNovice

Central Minnesota

My Posts: All  Forum  Topic

Stiff collective pitch movement
I found my MX-400 had this same problem. Checked pivot points on the pitch lever tray and everything else but couldn't identify where the drag was. Finally removed the head T and the pitch lever moved much more smoothly. I found that depending on which guide in the washout hub the anti-rotation pin engaged, it would drag or not drag. My fix was to engage it with the guide that didn't drag.

My question is that I see places for two anti-rotation pins between the Head T and the washout hub, yet apparently the MX-400 is only using one. From what I can see on Trex photos, it has the identical setup but it looks like they use both pins. Are we giving away something only using one pin on the MX-400 for the sake of poor tolerances just to reduce unwanted friction?

PM  EMAIL  Attn:RR  Quote
02-13-2006 02:51 AM  12 years agoPost 13
rwj

rrVeteran

Kenosha Wi

My Posts: All  Forum  Topic

I thought that I had broke one of them off at first then I looked further and figured out that it is ok. But I wondered the same thing why only one.

PM  EMAIL  Attn:RR  Quote
02-14-2006 03:26 AM  12 years agoPost 14
mikefirstimer

rrNovice

port st lucie, florida

My Posts: All  Forum  Topic

MX400 ; checked things listed here, no help
I checked the anti-rotation spindle on mine, even took it off, and elevator control rod from servo bends before movement on the elevator torque lever. Pitch lever dosent seem stif. Also seems like mixing lever is binding on shaft. I disco'ed mixing levers and tried it, still stiff. I have never built a heli before, but have much experince repairing and upgrading the Blade CP. Seems like a plastic bind. What else should I look for? Anyone else heard of this? Please help!!!

PM  EMAIL  GALLERY  Attn:RR  Quote
02-14-2006 04:21 AM  12 years agoPost 15
Terry1229

rrApprentice

North Idaho

My Posts: All  Forum  Topic

Too much locktite somewhere?

Thanks: Terry

PM  EMAIL  GALLERY  Attn:RR  Quote
02-14-2006 07:13 AM  12 years agoPost 16
BikeNBoatN

rrVeteran

Santa Ana, CA USA

My Posts: All  Forum  Topic

With the link still snapped onto a ball, try firmly squeezing the sides of the link with a pair of needlenose pliers. That will sometimes make the link move easier. If it still drags after squeezing it, then you need to get a ball link reamer so you can enlarge the hole in the link slightly. Snap the reamer onto the link, give it 1-2 turns, snap it off, clean up the inside of the link with an x-acto, and try the link on the ball again. Usually after reaming the link a little larger, squeezing the link with pliers usually does the trick.

I had to do this with several of the links on my MX400 and a buddy's TRex.

The other thing to check is anytime there are two links on opposite sides of anything acting together as push-pull. Make sure the individual links are long enough. On my MX, the links by themselves moved freely after reaming them. But when I fully assembled everything, it was stiff. Finally realized that the links on opposite sides of the swash were about 1 turn too short, and were trying to pull the swash down. Had the same problem on the two push-pull aileron servo links.

Brent.

PM  EMAIL  GALLERY  Attn:RR  Quote
02-15-2006 02:46 AM  12 years agoPost 17
rwj

rrVeteran

Kenosha Wi

My Posts: All  Forum  Topic

I used the ball reamer. Now they work like a charm.

PM  EMAIL  Attn:RR  Quote
WATCH
 1 page 827 views POST REPLY
 Print TOPIC  Make Suggestion 

 5  Topic Subscribe

Saturday, June 23 - 12:04 am - Copyright © 2000-2018 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online