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Blade 400 › 3D Taking out the slop Thrust bearings in the main​blade grips wrong size from manufacture
03-17-2009 05:54 PM  8 years agoPost 1
T.J.

rrVeteran

St. Louis

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I started upgrading my blade 400 with the metal head from Eflite and upon further inspection when puting in the thrust bearings I noticed that on one of them the out side race is 7.8mm instead of 8mm. Im glad I took a look and brought out the caliper. You wouldnt think it would do much but when you put your blades on it and you can see how much that little variance adds up. Im just going to buy some new ones really not that expensive but these are things you may want to check when trying to take out the slop in the head.

Thanks, T.J.

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03-17-2009 06:25 PM  8 years agoPost 2
mmc205

rrElite Veteran

PA - USA

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I believe most thrust bearings are like that. Its to prevent the OD of the thrust bearing from touching the ID of whatever its in and misaligning the balls. You'll probably find a similar situation on the thrust bearing ID's. ONe will be a slip fit on the shaft, the other will be larger by some degree.

***Logo 600 vbar***Henseleit TDR vbar***

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03-18-2009 02:41 AM  8 years agoPost 3
peekopeekopewoa

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Northern California​- United States

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I agree

now if you had play on the radial bearings, then I'd be concerned

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03-18-2009 04:03 AM  8 years agoPost 4
T.J.

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St. Louis

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ok I understand what your saying its kind of like a trex 450,500,600 head. But here is the interesting part if this is the case then I have one two many 8mm and it should 7.8 I will find out once I order a new pack of thrust bearings for my blade I will use the caliper and see if there is any diference. I look forward to taking her out for a flight. the metal tid bits seem to have taken alot of slop out of the head.

Thanks, T.J.

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03-22-2009 05:28 AM  8 years agoPost 5
leadtongue

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S.Plainfield, New​Jersey USA

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the cure for a slopless head

If you add a step washer to the blade side of your grips you will need only 1 shim on the head block sides for a slop free head! Place it on the outside of the large flat washer that rests against the bearing in the grip. Thus you should have from the bearing inside the grip going outward the large washer first followed by the step washer (facing the bearing) then your thrust bearing assembly. You wont need more than 1 head dampening shim for a slop free head! T his is for the plastic stock parts you wont need the alum. hop ups!

Installed servos on my wallet so money flys out faster!

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Blade 400 › 3D Taking out the slop Thrust bearings in the main​blade grips wrong size from manufacture
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