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Home✈️Aircraft🚁HelicopterHelicopter Main Discussion › where to find a 7mm X 13mm X 5mm bearing
04-26-2018 02:56 PM  17 months ago
motorrc

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canton ohio usa

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From RC screws regarding bearing kit for thundertiger E550:

Hi, thank you for contacting us! The manufacturer does not specify how many of each are included, only that the kit includes standard bearings, flanged bearings & 3-piece thrust bearings (if needed for vehicle), as needed for this vehicle.

Please let me know if you have any other questions or concerns.
Regards,
Jo

The bearing kit is $67.50, too pricy for trial and error to see what is included. Also, I'm on a bit of a budget
if it doesn't fit, make it fit.
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04-26-2018 03:00 PM  17 months ago
motorrc

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canton ohio usa

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from Alibaba trade center/Jinon Ruihode Bearing Co Ltd:

7*13*5mm,not find this size,please check again
if it doesn't fit, make it fit.
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04-26-2018 03:09 PM  17 months ago
motorrc

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canton ohio usa

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Just hobbies does not offer standard shipping to USA. I sent an email yesterday and am still waiting to see if they can made an exception for me considering this is a very small part.if it doesn't fit, make it fit.
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04-26-2018 03:28 PM  17 months ago
motorrc

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canton ohio usa

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Still waiting on reply from roller skate nation.if it doesn't fit, make it fit.
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04-26-2018 03:41 PM  17 months ago
InvertedDude

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USA

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motorrc
Do you really need to use that thunder tiger flybarless head? I got an N5 synergy flybarless head. If you want to go back to flybar head, I got one that will work on the E550/E620.
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04-27-2018 12:21 AM  17 months ago
motorrc

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canton ohio usa

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message from roller skate nation:

Good Morning,

No, unfortunately we do not. Sorry about that!

Have a great day!

If you have any other questions or concerns please let us know.

Thanks,
--
Lauren Hubbard
email@rollerskatenation.com

Still looking
if it doesn't fit, make it fit.
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04-27-2018 12:59 AM  17 months ago
JuanRodriguez

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The Villages, Florida

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What happened with Dr. Ben's offer back on post #7 ???

PS-- Looked in my stash and didn't have any either ....
Been there, done that and old enough to know better.....
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04-27-2018 02:31 AM  17 months ago
motorrc

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canton ohio usa

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Hi Juan, I just heard from Dr Ben who had 2 bearings he could part with and I had 2 left in my stash so with his I will be able to rebuild the head in time for flying season. I still will continue to look for more because this in my "go to" heli and I'm sure I'll need more in the future. Thanks for checking your stash.if it doesn't fit, make it fit.
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04-28-2018 01:44 AM  16 months ago
Steve Joblin

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Blue Bell, PA 19422

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Would these 7X13X5 SKF Bearings work?

http://www.radwell.com/en-US/Buy/SKF/206RDS7LOB
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04-28-2018 02:42 PM  16 months ago
motorrc

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canton ohio usa

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A definite possibility. $23.xx for unknown quantity-I will give them a call on Monday to clarify. Thanks for the help.if it doesn't fit, make it fit.
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04-30-2018 03:01 PM  16 months ago
motorrc

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canton ohio usa

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called Radwell, cost is $26.80 plus shipping per bearing. Since the E550 flybarless head uses four of these, I'm looking at $105 plus shipping. A bit too pricey for me.if it doesn't fit, make it fit.
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05-03-2018 08:58 PM  16 months ago
InvertedDude

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USA

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motorrc
called Radwell, cost is $26.80 plus shipping per bearing. Since the E550 flybarless head uses four of these, I'm looking at $105 plus shipping. A bit too pricey for me.
WOW, I agree that is quite expensive!
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05-05-2018 10:05 AM  16 months ago
gemheli

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Taunton,Somerset, England

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Hello
I looked into this a while ago as being a possibly show stopper on my x50

I’ve still got two sets of of bearings, but when I run out will:
Use the thinner 7x13x4
Bearings (which are a really common and cheap size) and then make up some good quality spacers to make up the 1mm gap.

I’m sure that is a good fix

Regards
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05-05-2018 11:41 AM  16 months ago
Dr.Ben

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Richmond, VA, USA

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Spacers will be critical, because that head already suffers from grip slop on the stock 5mm thick radials. It'll be that much worse with thinner bearings.

Ben Minor
Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA
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05-05-2018 12:31 PM  16 months ago
Dyehard

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Cedar Bluff, Va.

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When I went to the newer feathering spindle and thrust bearings, I bought some shims that allowed me to put the thrust bearing in the middle. By spacing the radial bearings further apart, that did away with about all of the slop in the blade grips on my X50s. I'm sure the same could be done with the thinner radial bearings if you have or can locate the proper feathering spindle and thrust bearings.Allen Dye
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05-05-2018 12:31 PM  16 months ago
gemheli

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Dr Ben,

Good to talk again/didn’t you used to advise on the Hirobo threads back when I had an X Spec?

Yes the spacers will have to be good.
I use “quick uk” blade grips and take up any (spindle to innner bearing) play with a small amount of Loctite.
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05-05-2018 12:51 PM  16 months ago
Pistol Pete

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Seffner, FL

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Do they stack back to back?

If so, how about using a 7x13x4 and two 7x13x3?

http://www.vxb.com/SearchResults.asp?Search=7x13
~~Enjoying the hobby one flight at a time~~
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05-05-2018 01:11 PM  16 months ago
gemheli

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Pete
That would do it. I hadn’t thought of that, but seems like a very good solution.

I also suspect the wobble some people have is from bearing movement. The TT bearings are a bit sloppy from new. Pay some money and get SKF bearings etc and most of the wear probably goes away.
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05-05-2018 06:35 PM  16 months ago
SkySurfer

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usa

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Did thunder tiger go under?
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05-05-2018 08:14 PM  16 months ago
JuanRodriguez

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The Villages, Florida

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SkySurfer...
Did thunder tiger go under?
Don't believe so but apparently, finding the bearings being discussed "in stock" is proving to be more difficult than Stormy Daniels keeping her mouth shut !!!
Been there, done that and old enough to know better.....
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