blade grips thrust bearings

[AcidDrink]

Sorry for many threads this build is sometimes very challenging.

How do you seat thrust bearings into blade grips - is there any special trick, I can't make them to go in.

[AcidDrink]

Originally Posted by AcidDrink

Sorry for many threads this build is sometimes very challenging.

How do you seat thrust bearings into blade grips - is there any special trick, I can't make them to go in.

Ok, got it. Put everything in correct order on the spindle, push it in, use a pencil (not sharp end) to seat it all in.

[Ride]

since we are on the subject, Which side of the bearings goes in towards to head block? The side with the actual balls, or the side that holds the balls? I know the manual said something about a larger side goes a certain direction I just couldn't tell which one is actually larger.

[AcidDrink]

Originally Posted by Ride

since we are on the subject, Which side of the bearings goes in towards to head block? The side with the actual balls, or the side that holds the balls? I know the manual said something about a larger side goes a certain direction I just couldn't tell which one is actually larger.

They refer to bearings outsides (don't know proper term) - one has larger inside diameter, and that one goes first.
I am not sure about balls, nothing about it in manual, so I suppose it doesn't matter. I just finished assembling mine and it works perfectly - no slop and smooth like a silk..

[baui2000]

Balls go inside and the solid part holding them outside. Simple reason - when you lube the bearing, you want the lubricant to stay inside the bearing and not be pushed outside of it by inertia of the rotating head.

Acid is right, they refer to the inner diamete of the two rings. There's only a slight difference in diameter, but it's there.

[AcidDrink]

In In case of thrust bearing there is really no ball holding side.

It is true tho for regular bearing which are not closed. Lots of bearings in mini protos kit are closed, AFAIK.
I am not expert and still learning this, so correct me if I am worng.

[Ride]

I better check mine!

[baui2000]

AcidDrink, that's a cool picture On a mini, there are two different ID diameters which they refer to in the manual.

What I meant by the ball holding side is the flat part in bottom right of this picture. That has to face ouside. If you lubricate your thrust bearings you want the lubricant to stay inside (where the balls are exposed, top right in the picture) and not spray all over the blades

Sorry for my language today, been through a rough night out

[AcidDrink]

Ah I see. Well, I don't really remeber how did I put mine in, didn't pay attention to it, these bearings are really small .

I'll live with it for now I think - whole assembly is quite closed with thrust bearings between two ball bearings and I have used grease in there (as manual says) so I suppose I should be ok.
Thanks for explanation!

[exit44rc]

While we're on the topic of the thrust bearings, is there some reason that the thrust bearings don't mount on the outer-most part of the spindle shaft? On some other helis the thrust bearings are the last of the three bearings to be mounted on the spindle before the screws go into the ends. On this one that is not the case.

It would seem that if I could mount the thrust bearings on the outside of the radial bearings than I could eliminate having to use that little washer/spacer and be able to have the option of using the shorter "flybarred" spindle shaft, too.

[baui2000]

Good question, I was thinking about that too...then just went with it. Mostly because there's a good reason for pretty much anything in MSH heli design

I wouldn't use the flybarred spindle though, you still need to use those larger spacers between hub and grips.