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Old Jun 11, 2014, 04:51 AM
Official Old Git!
Hampshire, UK
Joined Sep 2000
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Blue Wonder bearings

Anyone know what size the bearings are in a Blue Wonder 1300?

I have some that need to be replaced, and want to know the OD of each (the ID is obviously 3mm).

Many thanks.
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Old Jun 11, 2014, 08:44 AM
homo ludens modellisticus
Ron van Sommeren's Avatar
near Nijmegen, Netherlands
Joined Feb 2001
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Remove ande measure Norman?
www.innov8tivedesigns.com
-> resources
-> video classroom
-> how to change motor bearings

Vriendeljke groeten Ron
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Old Jun 11, 2014, 01:21 PM
Official Old Git!
Hampshire, UK
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I don't want to remove them just yet, Ron as my quad is still working OK. It's just that the odd one is beginning to get noisy, so I want to get replacement bearings ready.

Of course when they get too bad then I'll indeed do that..
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Old Jun 11, 2014, 03:16 PM
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flydiver's Avatar
United States, WA, Seattle
Joined Jan 2007
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Oil 'em. Any fine grade machine oil (sewing, 3-in-1, even automatic transmission fluid - not WD-40). Won't fix the wear but will reduce noise and keep them going much longer. The cheap motors often are not decently lubed if lubed at all.
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Old Jun 11, 2014, 03:18 PM
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Ron van Sommeren's Avatar
near Nijmegen, Netherlands
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I would replace the noisy ones without further ado Norman, the motor is already drawing more current now as it is.

Vriendelijke groeten Ron
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Old Jun 11, 2014, 03:47 PM
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Ron H's Avatar
Bishopville S.C.
Joined May 2003
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I'm somewhere in the middle. I would take them out to measure, then clean and lube them. If still noisy, then replace. You certainly don't want one to fail in the air and possibly destroy other components.
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Old Jun 11, 2014, 05:03 PM
Official Old Git!
Hampshire, UK
Joined Sep 2000
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Good comments guys.

The only problem is that I suspect I'll end up destroying them just to take them out. (Getting such out of a tube is always a pain).
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Old Jun 11, 2014, 05:42 PM
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Ron H's Avatar
Bishopville S.C.
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Perhaps, but you only need new bearings in that case. Better than a crash and fried ESC. I use a small (tiny) screwdriver through the front bearing to tap out the lower one. If you line it up on the outer race no damage is done. The front bearing is easy after that.
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Old Jun 12, 2014, 05:30 AM
homo ludens modellisticus
Ron van Sommeren's Avatar
near Nijmegen, Netherlands
Joined Feb 2001
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www.innov8tivedesigns.com
-> resources
-> video classroom
-> how to change motor bearings


And

Bearing removal from a brushless motor without damaging motor (1 min 40 sec)
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Old Jun 26, 2014, 03:37 AM
Official Old Git!
Hampshire, UK
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Quote:
Originally Posted by Ron H View Post
Perhaps, but you only need new bearings in that case. Better than a crash and fried ESC. I use a small (tiny) screwdriver through the front bearing to tap out the lower one. If you line it up on the outer race no damage is done. The front bearing is easy after that.
Yup - that's precisely the way I normally do it, Ron!
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Old Jun 27, 2014, 06:33 AM
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United Kingdom, England, Southampton
Joined Oct 2013
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Make sure they are 3mm ID. They might be 1/8 inch. Many model motor shafts are.

Take one out, take it to a bearing dealers as there are many varieties of both OD and width. There are several in the Southampton area.
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Old Jun 29, 2014, 03:22 AM
Official Old Git!
Hampshire, UK
Joined Sep 2000
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Quote:
Originally Posted by Mark Powell View Post
Make sure they are 3mm ID. They might be 1/8 inch. Many model motor shafts are.

Take one out, take it to a bearing dealers as there are many varieties of both OD and width. There are several in the Southampton area.
The problem wasn't getting the bearings replaced, Mark.
I have a pair of digital callipers, Mark and have replaced many motor bearings.

The problem was not to get some bearings ready in advance, so I can replace them straight away rather than have my quad out of commission whilst I knock out the bearing (to measure the OD and depth and type).

BTW I normally use Model Fixings ( http://www.modelfixings.co.uk/ ) for such things.. great, rapid service.
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