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11-20-2006 09:04 PM  11 years agoPost 1
buchee

rrNovice

London, Ontario. Canada

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Everytime i spool up the inner bearings are coming out of the blade grips. I'm on my third pair of blade grips, second set of bearings and nowhere closer to a resolution.Could weather be affecting this? ie. could the cold weather affect the plastic blade grips? On another note, the second set of blade grips i bought have smaller spacers than my originals. What's up with that? Anyone else having this issue or know a resolution to it. TIA.

BTW....stock CP.

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11-21-2006 12:02 AM  11 years agoPost 2
Gino CP

rrKey Veteran

Philippines

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The only way the bearing can be pulled out is if your bolts come loose. Tighten it well. It is also possible that you have assembled it incorrectly. Another possibility is that you have bent main shaft and spindle causing vibration thereby loosening the spindle bolts.

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11-21-2006 02:47 AM  11 years agoPost 3
tvr_vixen_2500

rrApprentice

Chicago IL USA

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I would go along with Gino on the loose bolts . I have a funny loose bolt story to go with that. I was flying after I rebuilt the head and guess who forgot some locktite? Well both blades shot off the head one hit me in the chest.

If I had been hovering like I generaly do in the basement I would have caught that in the face. I have noticed too that HoneyBee and Blade spindle shafts are different lenghts.

Any landing you can walk away from is a good one!

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11-21-2006 02:48 PM  11 years agoPost 4
buchee

rrNovice

London, Ontario. Canada

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I checked the screws going into the feathering shaft and they are still snug. They didnt loosen at all. The inner bearings come right out of their blade grips as i throttle up the heli. I could take a pic if that would help any. Does anyone know what i'm talking about?At first i thought the holes where the bearings go into the grips have somehow become enlarged due to the cold but i really don't know. I do know for sure that the screws are not coming undone.

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11-21-2006 03:42 PM  11 years agoPost 5
slider46

rrProfessor

Ocala Florida

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Do you have the three bearing grips and only 2 bearings in it? The bearings can't come out if the screw is in the feathering shaft so you have something missing in the grip assembly......

Tom..... No "D" flying....

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11-21-2006 04:04 PM  11 years agoPost 6
buchee

rrNovice

London, Ontario. Canada

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Slider
I do have the 3 bearing grips and only have 2 bearings in it. So i have a bearing, then the smaller spacer that came with the 3 bearing grip and another bearing. Where does the 3rd bearing go? Do you a diagram of how it should be setup? or where i can find one? TIA.

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11-21-2006 04:19 PM  11 years agoPost 7
slider46

rrProfessor

Ocala Florida

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If I remember correctly, there are 2 bearings one small and one large that go in the blade side and one large bearing on the head side...

Tom..... No "D" flying....

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11-21-2006 05:32 PM  11 years agoPost 8
fyrfighter358

rrNovice

columbus, Oh

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I ran into the exact same problem, I did not know that there was a three bearing grips out there., until I did some research and found it out. I bought a new set of grips and it had the small spacer (brass looking) and came to find out it was a three bearing grip set. I did eventually find a set of two bearing grips that take the larger (steel looking)sapcer. I have not yet tried the three bearing grips. I had to add some shims between the oring and the bearing washer. I still do not have my head wobble totally figured out. I noticed that with the set of carbon fiber blades I had a uncontrolable heli. I replaced them with a set of woodies and it has seem to gone away. I rebalanced the carbon fiber many times. and checked the blade angle and even replaced the center shaft. while messing with this i also noticed I had two different size washers(thicker) under the screw head that goes into the shaft. I have been fighting this for a while but I now have a controllable heli and I can live with that.

Avionics makes a pilots job obsloete

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11-21-2006 05:37 PM  11 years agoPost 9
fyrfighter358

rrNovice

columbus, Oh

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slider I have a question for you about the bearings that go into the blade side of the 3 bearing head. Should they all be the large bearing? if not how does the center shaft go thru the smaller bearing to get to the screw at the end of the shaft? I am asking becuase i do not know. i have learned a lot on this site and If i do not ask questions I will not learn more

Avionics makes a pilots job obsloete

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11-21-2006 07:00 PM  11 years agoPost 10
BikeNBoatN

rrVeteran

Santa Ana, CA USA

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Actually, for the 3-bearing grip on the BCP, all 3 bearings are the same size. Two bearings go on the outside, one bearing goes on the inside. Starting from the outside working to the center, the order is: bolt, washer, step washer (with step facing in), bearing, bearing, brass spacer, bearing, step washer (with step facing out), damping shim(s) (if needed/desired), o-ring, rotor hub.

The feathering spindle (the hollow shaft that connects the blade grips together) fits inside all the bearings. If you leave the bolt off, it will slide all the way through. If the spindle doesn't go through, then either a bearing or spacer is not lined up properly.

EFlite upgraded the grips almost a year ago from 2-bearings to 3-bearings to alleviate the sticky collective problem. Since there are no actual thrust bearings taking up the centrifugal force loads, high headspeeds would sometimes cause the single outer bearing to stick. Instead of using an expensive thrust bearing, their inexpensive fix was to add a second outer bearing to help take up the load. Due to the small size, weight and relatively low headspeed of a BCP, that actually works ok.

Brent
Slow and Smooth 2-D Scale Flyer
AMA #35431

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11-22-2006 04:22 PM  11 years agoPost 11
buchee

rrNovice

London, Ontario. Canada

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BikenBoatn,
Thank you for explaining the difference between the 2 and 3 bearing grips. I can fly again!!! Woohooo. Thanks everyone!!

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