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A Main Hobbies . Boca Bearings . Modefo's RC Helicopters

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Thunder Tiger Raptors 30-90 - Imperio > Raptor 60 Construction Help!
 
 
kovar
Senior Heliman
Location: West Chester, Ohio

I'm on step 2-1 in the manual putting the rotor head assembly together and have a few questions. I think I know the answers to some, but this is my first heli kit and I don't want to mess any thing up. Especially with the Rotor head!!!!

1. Do I need to Greese the dampners? I was able to get the spindle centered through the rotor hub without greesing, but after getting it together, I thought about some posts I read about greasing dampners to keep wah wah's from happening or something. If I do need to grease them, is silicone oil the best thing to use? I have some Stealth Diff lube (used to grease RC car gear transmissions), can I use that if I should grease? The only reason I ask is because I'm out of silicone oil and I'm lazy.

2. When inserting the bearing in the rotor pitch housing (the side torwards the rotor blade), the bearing seats flush with opening. However, with the bearing removed, it looks like it should seat a lot farther down inside the housing. (There is a little circle rib preventing it from seating down further. It looks like it will take a decent amount of force to push it in and I want to make sure that I should push it all the way down.

3. What's the deal with the trust bearing? It only is supposed to go on one way, but I can't determine from the manual which is the proper way. The manual talks about an inner hole difference which I am unable to see. What I can see on the thrust bearing from the side is that one side of the center bearing part seems to have a larger gap.
Kinda like this

____
-o-o-
------- <--Larger gap here.

Should the larger gap be facing the rotor blade or the rotor shaft?
This seems to be a critical part of assembly and want to be 100% sure. Also, it says to grease the thrust bearing, what kinda grease should I use? Again can I use my Stealth diff lube or what would you recommend?


Thanks for taking the time to answer my questions and to read this rather long post to help a newbie.

04-25-2002 Over year old.
 
 
Heli-Driver
Elite Veteran
Location: Arlington, TX

R60 Questions

You MUST grease the flap dampers inside and out. I use triflow grease. Do not use a petroleum based grease as it will attack the rubber. Also I grease the spindle shaft so it doesn't gall up in the pivot block.

The radial bearings in the grips go on without any problem. Just do it exactly as the instructions indicate, it works.

The thrust bearings should be installed so the outer race has the larger ID. To check which is which, slide both races onto the the spindle and rock them, you will see which is the small one, it won't rock very far and the larger one will, the small one goes inside, large on the outside.
The inner bearing cup... I install it so the cup side is facing outwards, this will help hold the grease in the bearing.

I also use TriFlow grease to pack my thrust bearings. Lithium grease, teflon or hydrogen grease is fine as well.

I recommend you also drill and pin (or bolt) your torque tube ends to your tube, I know of several that failed under use and caused crashes. It doesn't take long to do, you can do a search here for info regarding the modification, it only take a few minutes to do and could save you big money down the road.

If you can't find the info, email or message me and I will get you some more info.



Raymond

Predator Gasser SE/231 X 2
Century Helicopters
04-25-2002 Over year old.
HOMEPAGE  
 
 
Vance
Veteran
Location: York ,PA

Larger ID goes in towards the headblock

The larger ID thrust bearing washer goes closest to the headblock NOT on the "outside"!!!! Also install the thrust bearing center part(the one with the balls in it) with the "cupped" side facing in towards the headblock after putting a liberal amount of grease on it this "cupped" area will help retain the grease a little more. After hovering the heli after building or rebuilding you should see some grease on your blade roots that has been slung out from the force of rotation. If you don't see any grease that was expelled then you probably didn't put enough grease in the thrust bearings.
Vince D
04-25-2002 Over year old.
HOMEPAGE  
 
 
fritzthecat
Key Veteran
Location: New Orleans

Looks like you could use a bit of help with the manual.
Go to my webpage and look under Helicopters / TT/ R60 for a nice supplemental manual.

http://members.telocity.com/fritzthecat

Fritz
04-25-2002 Over year old.
 
 
kovar
Senior Heliman
Location: West Chester, Ohio

Thanks guys!

Where can I get TriFlow grease?

I'm still confused about the thrust bearing. raptordriver says the larger ID should be facing out and vance says the larger ID should be facing in towards the shaft. Which is right?

Thanks again! I'll let you know how it goes.
04-25-2002 Over year old.
 
 
kovar
Senior Heliman
Location: West Chester, Ohio

I did the racer check and your right, I was able to tell which one was the smaller on and which one was the larger one. I checked the manual and it says that the larger cup should be facing the shaft, not the blade. Also flipping the center bearing part so that the cupped side faces outwards to hold in the grease makes alot of sence. Thanks for the tip. All I have to do now is find the right grease. I was out today so I figured I'd stop in AutoZone to see if they had any TriFlow grease and they just gave me dumb looks.

I also asked for teflon or hydrogen grease and all I got was more dumb looks. The only grease they had was Petroleum and silicon based. Where can I get my hands on the right grease? At this point, I'm almost ready to use vasoline.

04-25-2002 Over year old.
 
 
Vance
Veteran
Location: York ,PA

Kovar- the cupped side should face "in" towards the mainshaft, not out. It won't make a big difference, but every little bit helps. Rick's R/C or any of the more popular online heli shops will have the correct grease for you. In the meantime you can go to Walmart or another store like it and go to the fishing dept. there you will find a little tube of grease used to lubricate fishing reels for about $2.00 I have used this grease for years without any negative side effects. You can also use silicone shock oil for R/C cars to lube the dampers. I know a lot of guys have R/C car stuff laying around and the silicone shock oil works great on the dampers as it doesn't dry up and it doesn't degrade the rubber in any way.
Vince D
04-25-2002 Over year old.
HOMEPAGE  
 
 
Heli-Driver
Elite Veteran
Location: Arlington, TX

oops

Kovar, I goofed on the direction of the bearing races, my bad. I was at work and wasn't able to check my references.... guess my CRS is flairing up again. The smaller ID is outside and the larger inside as Vance pointed out. I had to go back and read my post again.... damn I can't believe I said that, I know better and sorry for the confusion.

The "cup" opening should face inside, the cup itself as I mentioned faces outside with the exposed bearings towards the inside. I guess it may have been a bit confusing the way I wrote it , I figured you would understand the intention is for the cup to hold the grease inward.

Before I finally got some TriFlow grease, I used white lithium grease.

Good luck with the Raptor 60, it is a great flying machine, do keep your headspeed about 1550 RPM or so, they tend to wobble in a hover with a low headspeed.



Raymond

Predator Gasser SE/231 X 2
Century Helicopters
04-25-2002 Over year old.
HOMEPAGE  
 
 
kovar
Senior Heliman
Location: West Chester, Ohio

At first I thought by cup you were talking about the side that have the bearing holes. Then I thought about it and then knew you were talking about the side where you can see the bearings exposed. Thanks for the tips on the grease as well. I'll let you all know how it goes.

Thanks again!

04-25-2002 Over year old.
 
 
kovar
Senior Heliman
Location: West Chester, Ohio

Torque tube end mod

Ray, I'd like more information on the bolt/pin torque tube end mod you were refering to. If you get a chance, please post the info here or send me an e-mail to kovar25@hotmail.com. Thanks!
04-28-2002 Over year old.
 
 
Heli-Driver
Elite Veteran
Location: Arlington, TX

Raptor 60 Torque tube mod "HOW TO"

Kovar,

I could explain it here but I will post a link to Lee Marshall's website. He dedicated a page to the Raptor 60 torque tube modification and there are photos and text that explain it better than I could.

Here is the LINK

I hope Lee doesn't mind me linking to his site.... he's probably off flying that beautiful Squirrel anyway



Raymond

Predator Gasser SE/231 X 2
Century Helicopters
04-28-2002 Over year old.
HOMEPAGE  
 
 
kovar
Senior Heliman
Location: West Chester, Ohio

Thanks!

Thanks for the info!
04-29-2002 Over year old.
 
 
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Thunder Tiger Raptors 30-90 - Imperio > Raptor 60 Construction Help!
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