RunRyder RC
 11  Topic Subscribe
WATCH
 5 pages [ <<    <    ( 1 )     2      3     NEXT    >> ] 5372 views POST REPLY
HelicopterMain Discussion › Not sure what else to do??Update video on OP.
06-10-2012 10:27 AM  5 years agoPost 1
BladeStrikes

rrElite Veteran

Shelby TWP,Mi

My Posts: All  Forum  Topic

EDITED::I changed the rubbers around the tank and that didn't help ..Today I wanted to see how the motor sounded at idle.When I put my ear close to the exhaust side and I can hear a odd sound and im guessing its the bearing?Kinda sounds like a on/off grinding/tinging sound..I know the video is kinda long but it kinda gets loud at times..Whenever bearings go (ones I seen) it takes out glow plugs ALOT and sounds like rocks in a metal can..Does this sound like a bad bearing?

Watch at YouTube

So far I changed the clutch shoe,ring,engine fan mount and new bearings in the pinion housing..Im getting a bad vibe at idle and all thats left to change is the bearings in the engine which I plan on doing either Monday if my hobby shop stocks the bearings or order them and wait ..The motor has a vibe at idle and gets worse when rpms pick up.Its bad enough that I have the high needle 1 3/4 turns out and mid just past 2 turns out so the motor doesn't lean out..When the fuel tank is 1/2 to 1/4 full,in idleup the fuel looks like its raining up side down..Like I said,I will be changing the engine bearings but kinda looking for other things to look at...

YS 91SR 3DS
Hatori SB-19 Kasama header
Enya #4
RotorRage 30%

Heres 2 videos I took a few hrs ago.First one shows the tank on the ground idling and the 2nd shows it rinning in idleup..

Watch at YouTube

Watch at YouTube

PM  EMAIL  GALLERY  Attn:RR  Quote
06-10-2012 10:29 AM  5 years agoPost 2
BladeStrikes

rrElite Veteran

Shelby TWP,Mi

My Posts: All  Forum  Topic

BTW,
The rear bearing is in good shape and im not blowing glow plug which is a sign of the bearing going bad.Changing it anyways...

PM  EMAIL  GALLERY  Attn:RR  Quote
06-10-2012 12:01 PM  5 years agoPost 3
Steff Giguere

rrProfessor

St-Eustache, Quebec, Canada

My Posts: All  Forum  Topic

Did you dial indicate the motors shaft?

Team Synergy, Rail blades, Team Scorpion, V-Team

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
06-10-2012 12:23 PM  5 years agoPost 4
shawmcky

rrElite Veteran

Isle of Wight,United Kingdom

My Posts: All  Forum  Topic

Looks engine related to me ,that is a bad vibe

Team- unbiased opinion.K.I.S.S principle upheld here

PM  EMAIL  GALLERY  Attn:RR  Quote
06-10-2012 01:06 PM  5 years agoPost 5
fastflyer20

rrKey Veteran

N. Tonawanda, NY

My Posts: All  Forum  Topic

If you order today from RC-bearings, you should have them by Wednesday. I don't think many shops stock engine bearings and the original ones are very expensive.

PM  EMAIL  GALLERY  Attn:RR  Quote
06-10-2012 01:07 PM  5 years agoPost 6
heli-cuzz

rrElite Veteran

Pittston, Pa. USA

My Posts: All  Forum  Topic

Did you dial indicate the motors shaft?
+1

also did you balance the clutch bell, fan, and dial indicate the clutch?

Fury 55 NIB Furion6 CGY750 fbl helicopter-Frenzy CGY750 fbl nitro-Frenzy fbl NOBAR90

PM  EMAIL  GALLERY  Attn:RR  Quote
06-10-2012 01:09 PM  5 years agoPost 7
shawmcky

rrElite Veteran

Isle of Wight,United Kingdom

My Posts: All  Forum  Topic

Have you had any trouble starting that motor with hydraulic locking?

Team- unbiased opinion.K.I.S.S principle upheld here

PM  EMAIL  GALLERY  Attn:RR  Quote
06-10-2012 01:23 PM  5 years agoPost 8
airdodger

rrElite Veteran

Johnston USA

My Posts: All  Forum  Topic

If it's not the bearing, try putting the Hatori header back on to see if the reduced back pressure is causing the vibes.

Chris

PM  EMAIL  GALLERY  Attn:RR  Quote
06-10-2012 01:58 PM  5 years agoPost 9
CX1

rrKey Veteran

Canada

My Posts: All  Forum  Topic

seems alright/fair to me

you sure it's not that deflector causing your vibe

" Team Protoast "

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
06-10-2012 02:20 PM  5 years agoPost 10
unclejane

rrElite Veteran

santa fe, NM, USA

My Posts: All  Forum  Topic

I'm with CX1, it looks ok to me.

You should see my 700N/OS 105 at idle... it buzzes so bad that it screws with even the GY 701, causing it to drift all the way to one side lol. It was the same when I had my 91HZ-R in it too.

At full speed, it foams the fuel a little bit, though not so bad that it's showering inside the tank.

If you relined the clutch bell, you might have gotten the inside surface of the liner ever so slightly off center which may aggravate a vibe somewhat. I usually put an old start shaft in for the old clutch with the tape on it to center it as much as possible while the glue cures.

Other than that, I just accept it as a fact of life, after many years of running nitro I've just had to admit defeat on vibration. I run the foam pad on the beastX and avoid high rotor speeds and all is well there. Though I'm actually putting the flybar head back into it today because I need to rob the BeastX off it for another project. AFter that it can buzz as hard it wants to lol.

You can balance the clutch/hub/fan assembly, but with the Align setup, there's not too much you can do about it if it's off. I guess you can drill holes in the fan or something. So there's not a lot of point other than to see if it's just way way off. Then you can try rotating the clutch 180 degrees or replacing parts.

But yes it might not be a bad idea to put a dial indicator on the hub assembly and see if you have any unusual runout.

But bottom line is don't obsess over it. On a nitro, that leads to the rubber room and lots of spare perfectly good bearings, etc. in the junkbox at home whilst your recovering at the funny farm.... If it's not just REAL bad, with blurs on the tips of things like the tail fin, canopy edges, etc. just leave it alone IMO.

Otherwise, just run that sucker till it shakes itself apart (don't leave home without your hex drivers ).

LS

PM  EMAIL  Attn:RR  Quote
06-10-2012 02:37 PM  5 years agoPost 11
Furyous

rrVeteran

Detroit, Michigan

My Posts: All  Forum  Topic

Electrics don't have these problems

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
06-10-2012 03:43 PM  5 years agoPost 12
kc8qpu

rrElite Veteran

sc

My Posts: All  Forum  Topic

No instead they just decide to go up in flames.

Carpe Diem!!!

PM  EMAIL  GALLERY  Attn:RR  Quote
06-10-2012 04:12 PM  5 years agoPost 13
unclejane

rrElite Veteran

santa fe, NM, USA

My Posts: All  Forum  Topic

Electrics don't have these problems
Yes they do. The vibration profiles are different, usually a much higher frequency vibration, but you'll chase those down on an electric too.
Don't ask me why I know this.

LS

PM  EMAIL  Attn:RR  Quote
06-10-2012 06:01 PM  5 years agoPost 14
McKrackin

rrProfessor

Lucasville,Ohio

My Posts: All  Forum  Topic

Probably not the issue but mine was running really rough the other day too.

I had ordered a bunch of stuff from Readyheli and in the order was a bubble-less clunk.
I just wanted rid of the fuel magnet for a few reasons.

I pulled the fuel magnet out and the sponge had dissolved into sludge and part of it was clogging my pump.

Cleaned it out and installed the clunk and all is good with the world again.

I literally never use the word literally right.

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
06-10-2012 06:50 PM  5 years agoPost 15
airdodger

rrElite Veteran

Johnston USA

My Posts: All  Forum  Topic

CX1 You are laughing about the deflector, that was a problem on the planes , while flying, we placed an aluminum ring around the outside of the deflector and the issue was resloved. You don't know what you don't know. That is why it's great to get many opinions on a forum like this.

Chris

PM  EMAIL  GALLERY  Attn:RR  Quote
06-10-2012 08:04 PM  5 years agoPost 16
CX1

rrKey Veteran

Canada

My Posts: All  Forum  Topic

I'm not laughing @ anyone

that happened to me along with a rich tune
plus I was advised to shorten it

" Team Protoast "

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
06-10-2012 09:03 PM  5 years agoPost 17
heli-cuzz

rrElite Veteran

Pittston, Pa. USA

My Posts: All  Forum  Topic

My good friend that you put on your ignore list watched your video.
Went out of his way to PM and let me know what your problem is.
The clutch pinion/starter bearings are shot.

Fury 55 NIB Furion6 CGY750 fbl helicopter-Frenzy CGY750 fbl nitro-Frenzy fbl NOBAR90

PM  EMAIL  GALLERY  Attn:RR  Quote
06-10-2012 10:13 PM  5 years agoPost 18
BladeStrikes

rrElite Veteran

Shelby TWP,Mi

My Posts: All  Forum  Topic

A buddy has a dial indicator so as soon I get time,i'll get it from him and check the crank,fan mount and clutch..Whats odd is about a 2-3 weeks ago everything was 10000000% perfect with no vibes at all..Started getting a slight vibe,took the motor apart and noticed the clutch shoe was weak on one side so put a new one on it.The vibe seemed to get worse and worse so thought maybe the fan mount needed replaced so did that also which didn't change anything..All I can think of is the bearings or con-rod so but im trying bearings first but also will dial indicate things..
Are these the right bearings?

heli-cuzz,
Let your buddy know all thats been replaced and also let him know it has nothing what so ever to do with any of that.
Also,
The pinion doesn't spin at idle,let him know that too..Good thing hes where hes at..

PM  EMAIL  GALLERY  Attn:RR  Quote
06-10-2012 10:14 PM  5 years agoPost 19
JWatson

rrKey Veteran

Mustang, OK

My Posts: All  Forum  Topic

I would also check the alignment of the Engine and the Clutch stack. 700's are real bad about not being able to get engine aligned with the clutch stack.

I had to slot/ Open up all 6 Engine mount holes to be able to get everything to work smooth.

The best way to verify this, is the Hex coupler on the Clutch should not be spinning at idle, or if it spins you should be able to hold it with your fingers and stop the rotation.

I also vaguely remember an issue with the older 700 frames about being to small around the Fuel tank opening and transferring vibrations to the tank.

Hope that helps ya some....

J

Jarrett Watson
http://jarrettrc.wordpress.com/

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
06-10-2012 10:47 PM  5 years agoPost 20
BladeStrikes

rrElite Veteran

Shelby TWP,Mi

My Posts: All  Forum  Topic

JWatson,
Thanks for the reply ..
Yes,I can hold the coupler while its running and it stops easy..Thats something I always do after installing a motor so I know everything is lined up correct.

You know,ya might be right about the whole fuel tank thing and you made me remember something.I had a stock clunk in the tank and replaced it with a magnet.Around the same time I put the magnet in,the vibe issue started so maybe I cut the rubber a little putting the tank back in and the frames cut it more..I have new ones and will pull the tank tonight..Thanks so much for the reminder..

PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 5 pages [ <<    <    ( 1 )     2      3     NEXT    >> ] 5372 views POST REPLY
HelicopterMain Discussion › Not sure what else to do??Update video on OP.
 Print TOPIC  Make Suggestion 

 11  Topic Subscribe

Monday, May 28 - 12:42 am - Copyright © 2000-2018 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online