RunRyder RC
WATCH
 3 pages [ <<    <     1     ( 2 )     3     NEXT    >> ] 2578 views Post Reply
Home✈️Aircraft🚁HelicopterCentury Radikal G20-30 N640 Hawk Predator › Drive Shaft Sub Standard Quality.
09-08-2006 02:43 AM  14 years ago
adamsz06

rrVeteran

Geilenkirchen Germany

MyPosts All Forum Topic
Automan, the mod your speaking of with two additional bearings inside the originals is how I built my Raven. I had a crash this weekend when my rudder control rod popped off the servo and will be tearing mine down this weekend; I'll give a report on how mine has worn after six gallons...I've got a feeling it's not going to be good because I can already feel more lateral play on the counter gear than when it was built. Oh well...just a new excuse to put in some more upgrades while I have it apart...did I mention replace the one's that broke?R.I.P. Roman
SHARE  PM  EMAIL  Attn:RR  Quote
09-08-2006 04:32 AM  14 years ago
Mr.Bowflex

rrApprentice

Toronto Canada

MyPosts All Forum Topic
To help with the confusion with the bearing mod, here is some photos of the original setup, the mod, and the pieces seperatly.

If your heli has the wear on the counter gear shaft that is being talked about in this topic, than it is vital that when you change the shaft, you change the bearings too. The ID of the bearings will be greater from the shaft spinning inside them and will cause similar problems with the shaft wear in the future, regardless if you do this mod.

You will also notice in the third image that there is a shim. Its to shim the top 5x13 bearing if it is loose in the bearing recess molded in the frame. The 2 extra bearings are 5x11x4. The same ones in the tail case supporting the output shaft.

I personally assemble the shaft and bearings dry without any shaftlock compound since I found I never had too after doing this mod. If you choose to use it, like the manual says, don't get the compund inside the bearings.

Curtis

SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
09-08-2006 12:32 PM  14 years ago
SteveH

rrProfessor

Texas

MyPosts All Forum Topic
Curtis,

That's a different mod than what I've been doing, and although I'm sure it helps, I wouldn't think it will work as well as what I've discribed. The reason I believe that is because you are adding bearings below the bearing that carries all of the load, not above as in the way that I've done it. Because your added bearings are below, there is no gain in leverage as there is in installing one bearing above the existing bearing.
The government cannot give you anything without first taking it from someone else.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
09-09-2006 07:00 PM  14 years ago
BC Don

rrElite Veteran

Calgary, AB Canada

MyPosts All Forum Topic
Steve, do you have pictures?Got Money? Send it to me, I'm a Heli Addict.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
09-09-2006 07:29 PM  14 years ago
SteveH

rrProfessor

Texas

MyPosts All Forum Topic
Don,

Sorry, I don't, but if you read my discription and look at the insides of the frames, it's easy to visualize the mod. I would have to split a set of my upper frames to take the pictures.
The government cannot give you anything without first taking it from someone else.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
09-10-2006 12:50 PM  14 years ago
BrunoB

rrApprentice

Quebec, Canada

MyPosts All Forum Topic
I found pictures here a month ago, I will try t fnd them again...
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
09-25-2006 03:27 AM  14 years ago
perfesser zero

rrKey Veteran

Dublin, VA., USA

MyPosts All Forum Topic
Counter shaft mod...
Well since I dorked my Hawk in today and took out a main shaft I had to disassemble the whole heli to get the main shaft out. Whether this was necessary or not is a mute point at this time. Anyway, I got the frames apart and found that my counter gear shaft was doing just fine, even after over 140 flights and four different engines (TT.36, OS .32, Toki .40 and now an OS .37). Since I have it apart anyway I'll go ahead and do the mod as SteveH has mentioned above. Anyone that wants to do a mod this way can use the 5mm spindle blade grip bearings, if you've also done the 6mm bearing/6mm spindle mod. Otherwise you'll have to order the bearings from someone. BTW, my counter gear shaft was not loctited to the bearings. Go figure!

Later...

Scott!
Tiger 50 - OS 50SX-H
Hawk Sport - OS 37SZ-H
Raptor 30 - OS 37SZ-H
JR 10X/R950S
SHARE  PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
09-25-2006 02:59 PM  14 years ago
SteveH

rrProfessor

Texas

MyPosts All Forum Topic
Scott,

Your findings support my theory that the "beating out" of the counter shaft, as I call it, is caused more by running the engine too lean, or too rich, rather than the bearing slipping on the shaft. When the engine is too lean, or too rich, all of the back and forth motion of the engine RPM surge has to be absorbed by the top bearing and the counter shaft, causing it to be beat out at that location.
The government cannot give you anything without first taking it from someone else.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
09-25-2006 09:04 PM  14 years ago
perfesser zero

rrKey Veteran

Dublin, VA., USA

MyPosts All Forum Topic
SteveH...
Thanks! Well, I guess I'm better at setting the needles on my engines than I thought. Anyway, I took pictures of my mod and parts and I'll post them tonight. I did find it rather annoying that I had to take the frames apart to get all the stuff out of the Hawk, but it wasn't in vain. When I put the frames back together I did loctite the bearings to the shaft just to be sure they didn't do the shaft wear out thingie. Now, having done that, watch them wear out the shaft now in about the next two gallons of fuel.

Later...

Scott!
Tiger 50 - OS 50SX-H
Hawk Sport - OS 37SZ-H
Raptor 30 - OS 37SZ-H
JR 10X/R950S
SHARE  PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
09-25-2006 10:20 PM  14 years ago
SteveH

rrProfessor

Texas

MyPosts All Forum Topic
Scott,

By the way, all you have to do to remove the main shaft is take the bolt out of the bottom of the autorotation clutch, loosen the set screws in the retaining ring, and slide the shaft out the top.
The government cannot give you anything without first taking it from someone else.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
09-26-2006 02:12 AM  14 years ago
perfesser zero

rrKey Veteran

Dublin, VA., USA

MyPosts All Forum Topic
SteveH...
I tried that. Didn't work. Nothing was budging. I even tried tapping on the shaft at the bottom to get it moving and it still wouldn't come out. Even after getting the main shaft out I had to pound on it to get the bearings, mast stopper and auto-rotation sleeve off. It was a bugger!

Anyway I've posted the pics from my adventure with the bearing mod.

Later...

Scott!
Tiger 50 - OS 50SX-H
Hawk Sport - OS 37SZ-H
Raptor 30 - OS 37SZ-H
JR 10X/R950S
SHARE  PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
09-26-2006 03:43 AM  14 years ago
BrunoB

rrApprentice

Quebec, Canada

MyPosts All Forum Topic
That's it! Nice pictures. Maybe you should add a picture with the frames assambled to show that a portion of the top bearing will extend above the frames, just so people know it's normal that it does.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
09-26-2006 05:14 AM  14 years ago
perfesser zero

rrKey Veteran

Dublin, VA., USA

MyPosts All Forum Topic
Too late...
Yeah, I thought of that after I joined the frames together. Now it would be hard to see the assembly now that it's almost back together. In the one photo you can almost tell that it does stick up some from the frames, but it's not going anywhere.

Later...

Scott!
Tiger 50 - OS 50SX-H
Hawk Sport - OS 37SZ-H
Raptor 30 - OS 37SZ-H
JR 10X/R950S
SHARE  PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
09-26-2006 06:11 AM  14 years ago
COOKIEULT70

rrApprentice

CAMERON PARK, CA

MyPosts All Forum Topic
Thanks for posting that. I'm building up my second Hawk right now. I was going to do the auto hub but I think I will just do the 3 bearing mod instead.

Now if I can just figure out how to get the bearings off of the rod that connects the front of the frames. The rod that the pitch lever pivots on.
GAHH!!! Someone call 911!! My wallet is bleading heli parts!!
SHARE  PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
09-26-2006 07:55 AM  14 years ago
homer11

rrNovice

winnipeg, Manitoba

MyPosts All Forum Topic
Thanks for the pics prefessor zero. Makes sense now.
SHARE  PM  EMAIL  Attn:RR  Quote
09-26-2006 09:00 AM  14 years ago
fdztec

rrApprentice

Windsor, UK

MyPosts All Forum Topic
Maybe the answer is a combination of the 3 bearing mod above and the addition of the 2 11mm bearings in the centre to make a total of 5 bearings...
SHARE  PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
09-26-2006 12:39 PM  14 years ago
perfesser zero

rrKey Veteran

Dublin, VA., USA

MyPosts All Forum Topic
All these mods...
fdztec, SteveH seems to think that the mod I've posted pics for will do just fine. However you can do whatever makes you feel good.

COOKIEULT70, You'll have to put two Allen wrenches on each end and twist them off. One will back out. The shaft you'll have to get ahold of with a pair of pliers to get the other screw out. That's how I did it. Remember to use loctite on them when you put it back together.

Later...

Scott!
Tiger 50 - OS 50SX-H
Hawk Sport - OS 37SZ-H
Raptor 30 - OS 37SZ-H
JR 10X/R950S
SHARE  PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
09-26-2006 02:16 PM  14 years ago
COOKIEULT70

rrApprentice

CAMERON PARK, CA

MyPosts All Forum Topic
The screws came out just fine. The bearings were loctited to the shaft though. I go it apart finally last night. But it wasn't easy. Funny how these bearings were loctited so well and the idle shaft bearings were not.

I did the three bearing mod last night too. So now the frame halves are back togeather. I can start re-assembling the whole thing. I need to go back into the head though. I didn't put any grease in the thrust bearing in the 6mm shaft upgrade.

Where is a good place to order those 570s?
GAHH!!! Someone call 911!! My wallet is bleading heli parts!!
SHARE  PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
09-26-2006 06:55 PM  14 years ago
SteveH

rrProfessor

Texas

MyPosts All Forum Topic
Where is a good place to order those 570s?
I like these: http://www.heli-world.com/detail.aspx?ID=6232
The government cannot give you anything without first taking it from someone else.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
09-26-2006 08:28 PM  14 years ago
COOKIEULT70

rrApprentice

CAMERON PARK, CA

MyPosts All Forum Topic
Crud. out of stock.GAHH!!! Someone call 911!! My wallet is bleading heli parts!!
SHARE  PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
WATCH
 3 pages [ <<    <     1     ( 2 )     3     NEXT    >> ] 2578 views Post Reply
Home✈️Aircraft🚁HelicopterCentury Radikal G20-30 N640 Hawk Predator › Drive Shaft Sub Standard Quality.
Print TOPIC

 12  Topic Subscribe

Tuesday, November 24 - 5:39 pm - Copyright © 2000-2020 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online