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10-11-2005 12:37 AM  12 years agoPost 1
steve 01

rrProfessor

Grand Rapids MI

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I Just finished test flying my trex and aftet 2 flights I noticed that the gears were making a lot of noise when flipping inverted. After the flight I noticed the mainshaft moved for and aft or side to side in the lower bearing mount in the frame. In the instructions it tells you to glue the bearing with the supplied ?48 locktite which I did, Is there anything else that people are using ?

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10-11-2005 12:48 AM  12 years agoPost 2
ECOHELI

rrVeteran

Connecticut

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i noticed the same thing on my 450xl. even before i flew it for the first time. im wondering the same thing. is this normal? it dosent seem to hurt the flying at all i just hate having slop where it dosent belong.

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10-11-2005 12:58 AM  12 years agoPost 3
Professor Fate

rrKey Veteran

Goose Creek S.C.

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The kit bearings are sh!t bearings. That was a little harsh They do have some play in them. If they get worse replace them after market bearing.

Welcome my son, Welcome to the machine

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10-11-2005 01:01 AM  12 years agoPost 4
Tmaster

rrKey Veteran

TX

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The slop is in the inner race of the balls of the bearings. It is also between the main shaft itself and the inner race. You should be fine. I have some better bearings in mine ABEC 5 standards which costed way to much, and didn't really help out a whole lot. I wish the Trex used 4 main bearings instead of 2.

The main gears are not true, as you may tell when meshing the pinion. I did buy another main gear a few weeks back in it was pretty damn good meshed and spun a lot better then the gear that came with the kit.

Nothing you can do about the bearings themselves, but you can fill the space from the main shaft and the inner race. I head of people using a little CA. Personally my trex flys good enough, The Plastic headblock and 4 rubber orings in the it provide a nice dampening affect.

It would be nice to have a frame with 4 bearings to hold the main shaft, im my opinion.

Heres the thread for some of the issues, I have a post twords the bottom, with a pic of the bearings, and my assesment of them.
http://runryder.com/t203051p1

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10-11-2005 01:05 AM  12 years agoPost 5
steve 01

rrProfessor

Grand Rapids MI

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It flies well, the gear mesh just really screams and Im sure the gear wont last long. Im sure a crash will fix all that !!!

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10-11-2005 02:06 AM  12 years agoPost 6
Professor Fate

rrKey Veteran

Goose Creek S.C.

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Tmaster check this out, A mod I done to my Trex before I converted it to CCPM.

Welcome my son, Welcome to the machine

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10-11-2005 02:12 AM  12 years agoPost 7
MikeInMobile

rrElite Veteran

Mobile, Alabama

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An easier fix is to spray a little enamel paint onto the chaft where it passes through the bearings. This creates a micro-thin buffer between the shaft and the bearing's inner race, removing the play. I did this to my Microheli tail gear box when I put in ceramic hybrid bearings (my tail speed os over 20,000 RPM) ....... no wobble and no lateral endplay.

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