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700 Class Electric Helicopters 700 Class Electric Helicopters manufactured by Align, Tarot, SYMA, Airhog, Chaos, HK and similar. |
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12-22-2014, 01:30 PM | #1 (permalink) |
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Join Date: May 2011
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How to remove bearings from 700 blade grips?
I'm trying to figure out how to remove the bearings from the blade grips on my 700L. I've read using heat is the best way? It seems the only ones that are stuck are the very inside ones (inside meaning closest to the main shaft)
I've used a soldering before but accidentally discolored ones of the bearings on my 500 so I don't think that's the best method. I don't know whey they use that bearing retainer... they aren't going anywhere! Thanks for any advice you can give. |
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12-22-2014, 01:32 PM | #2 (permalink) |
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Join Date: Jun 2011
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Stick the grips in the oven for about 10 minutes on 350, the bearings will plop right out. If they dont, tap the grips on a hard surface, and poke them out with a screw driver though the blade grip, will barely take any pressure at all. Hope I helped!
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12-22-2014, 01:33 PM | #3 (permalink) |
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Thread Starter
Join Date: May 2011
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Sounds easy enough! I'll give that a try!
What's the purpose of the bearing retainer stuff? |
12-22-2014, 01:37 PM | #4 (permalink) |
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Join Date: Jun 2011
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Bearing retainer keeps the bearings fully seating in the grips. Prevents them from moving any fraction of an inch, and the outer race from spinning in the grips. With the forces in the head during flight, it is best to have bearing retainer on them IMO. Can take up any of the slop between bearing and grip (or wherever the bearing is located). I think manufacturers should leave it to the builder to apply it, instead of them doing it themselves.
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12-22-2014, 01:39 PM | #5 (permalink) |
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Join Date: May 2011
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I would rather do it myself as I like to re-grease the bearings anyway... in my "OCD" way I like to build stuff..
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12-22-2014, 08:57 PM | #6 (permalink) |
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Thread Starter
Join Date: May 2011
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The oven trick worked like a charm! got them out and re-packed them with grease and then used some of that green stuff to put them back in.
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12-23-2014, 04:03 PM | #7 (permalink) |
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Join Date: Apr 2010
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I don't know that I agree that bearing retainer is necessary on grip radial bearings. There is only a limited amount of movement of the grip. It isn't like there is a lot of rotational spinning going on in the grips.
My grip bearings were actually an interference fit, so that after the grips were heated up and expanded, the bearing was seated in it's proper location, and then the grip allowed to cool, the bearing was tight in the grip with no loctite needed.
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