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Bronze-Brass Bearings
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jack(at)textors.com
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PostPosted: Fri Dec 30, 2011 8:08 am    Post subject: Bronze-Brass Bearings Reply with quote

Happy New Year Friends! Awhile back I had questions regarding “oiled” bearings. I’ve had trouble locating these in the correct size. I don’t mind turning down the outside of the material for a fit but hesitate turning the inside because if not done correctly it can impair the oil properties of the bearings. My question…is anybody flying with plain brass or bronze bearings?
Thanks,
Jack
DSM
NX1929T [quote][b]


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aviatorbell(at)yahoo.com
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PostPosted: Fri Dec 30, 2011 9:07 am    Post subject: Bronze-Brass Bearings Reply with quote

Jack Where are you using these bearings? I am going to use high density plastic busings for my biplane aileron hinges( 1/4 od, 3/16 id and 1/16 flange thickness) They are commonly used in industrial applications, and claimed to have better wear properties than oil-lite bearings/bushings. I found them at igus.com . Let me knwow what you decide. I haven't ordered mine yet but need to get them so I can procede with my aileron cable routing.

Shad

--- On Fri, 12/30/11, Jack <jack(at)textors.com> wrote:

Quote:

From: Jack <jack(at)textors.com>
Subject: Pietenpol-List: Bronze-Brass Bearings
To: pietenpol-list(at)matronics.com
Date: Friday, December 30, 2011, 11:05 AM


Happy New Year Friends! Awhile back I had questions regarding “oiled” bearings. I’ve had trouble locating these in the correct size. I don’t mind turning down the outside of the material for a fit but hesitate turning the inside because if not done correctly it can impair the oil properties of the bearings. My question…is anybody flying with plain brass or bronze bearings?

Thanks,

Jack

DSM

NX1929T
Quote:


ollow target=_blank>www.aeroelectric.com
/" rel=nofollow target=_blank>www.buildersbooks.com
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llow target=_blank>http://www.matronics.com/contribution
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et=_blank>http://forums.matronics.com
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[quote][b]


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jack(at)textors.com
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PostPosted: Fri Dec 30, 2011 9:25 am    Post subject: Bronze-Brass Bearings Reply with quote

The axels

Jack Textor
Sent from my iPhone

On Dec 30, 2011, at 10:05 AM, "Jack" <jack(at)textors.com (jack(at)textors.com)> wrote:

[quote] Bronze-Brass Bearings
Happy New Year Friends! Awhile back I had questions regarding “oiled” bearings. I’ve had trouble locating these in the correct size. I don’t mind turning down the outside of the material for a fit but hesitate turning the inside because if not done correctly it can impair the oil properties of the bearings. My question…is anybody flying with plain brass or bronze bearings?
Thanks,
Jack
DSM
NX1929T
Quote:


===================================
ctric.com
Quote:
www.buildersbooks.com
uilthelp.com

matronics.com/contribution
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Quote:
http://www.matronics.com/Navigator?Pietenpol-List
===================================

cs.com
===================================
matronics.com/contribution
===================================


[b]


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aviatorbell(at)yahoo.com
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PostPosted: Fri Dec 30, 2011 9:47 am    Post subject: Bronze-Brass Bearings Reply with quote

I guess plastic won't work for those!, Are you using the big spoked wheels? I will see if I can find any sources online if you can give me some specs/sizes.

Shad

--- On Fri, 12/30/11, Jack <jack(at)textors.com> wrote:

Quote:

From: Jack <jack(at)textors.com>
Subject: Re: Bronze-Brass Bearings
To: "pietenpol-list(at)matronics.com" <pietenpol-list(at)matronics.com>
Date: Friday, December 30, 2011, 12:23 PM

The axels

Jack Textor
Sent from my iPhone

On Dec 30, 2011, at 10:05 AM, "Jack" <jack(at)textors.com (jack(at)textors.com)> wrote:

Quote:

Happy New Year Friends! Awhile back I had questions regarding “oiled” bearings. I’ve had trouble locating these in the correct size. I don’t mind turning down the outside of the material for a fit but hesitate turning the inside because if not done correctly it can impair the oil properties of the bearings. My question…is anybody flying with plain brass or bronze bearings?

Thanks,

Jack

DSM

NX1929T
Quote:


==========
ctric.com
Quote:
www.buildersbooks.com
uilthelp.com

matronics.com/contribution
==========
Quote:
http://www.matronics.com/Navigator?Pietenpol-List
==========

cs.com
==========
matronics.com/contribution
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ollow target=_blank>www.aeroelectric.com
/" rel=nofollow target=_blank>www.buildersbooks.com
ofollow target=_blank>www.homebuilthelp.com
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" rel=nofollow target=_blank>http://www.matronics.com/Navigator?Pietenpol-List
et=_blank>http://forums.matronics.com
llow target=_blank>http://www.matronics.com/contribution



[quote][b]


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jack(at)textors.com
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PostPosted: Fri Dec 30, 2011 10:33 am    Post subject: Bronze-Brass Bearings Reply with quote

Thanks Shad, I did check many including Bunting, National Bronze and McMaster. Tarbell would machine them for $250 which is too high. Bunting sent me a cylinder 1.5 ID and 2.5 OD for $100 but it was “over tolerance and they want a $20 restock fee. I’m looking for 1.5” ID and 2.3125 OD about 6” long. I can turn the OD down but hesitate enlarging the ID.
Thanks again,
Jack
DSM
NX1929T


From: owner-pietenpol-list-server(at)matronics.com [mailto:owner-pietenpol-list-server(at)matronics.com] On Behalf Of shad bell
Sent: Friday, December 30, 2011 11:45 AM
To: pietenpol-list(at)matronics.com
Subject: Re: Pietenpol-List: Bronze-Brass Bearings

I guess plastic won't work for those!, Are you using the big spoked wheels? I will see if I can find any sources online if you can give me some specs/sizes.



Shad

--- On Fri, 12/30/11, Jack <jack(at)textors.com> wrote:
Quote:


From: Jack <jack(at)textors.com>
Subject: Re: Bronze-Brass Bearings
To: "pietenpol-list(at)matronics.com" <pietenpol-list(at)matronics.com>
Date: Friday, December 30, 2011, 12:23 PM
The axels
Jack Textor

Sent from my iPhone


On Dec 30, 2011, at 10:05 AM, "Jack" <jack(at)textors.com (jack(at)textors.com)> wrote:
Quote:

Happy New Year Friends! Awhile back I had questions regarding “oiled” bearings. I’ve had trouble locating these in the correct size. I don’t mind turning down the outside of the material for a fit but hesitate turning the inside because if not done correctly it can impair the oil properties of the bearings. My question…is anybody flying with plain brass or bronze bearings?

Thanks,

Jack

DSM

NX1929T ==========ctric.com>www.buildersbooks.comuilthelp.commatronics.com/contribution==========>http://www.matronics.com/Navigator?Pietenpol-List==========
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[quote][b]


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Jerry Dotson



Joined: 12 May 2009
Posts: 547

PostPosted: Fri Dec 30, 2011 11:58 am    Post subject: Re: Bronze-Brass Bearings Reply with quote

McMaster has 1.5 ID X 2.5 OD $88.33
http://www.mcmaster.com/#8911K996
I don't think you are going to find 2.3125 OD. It is a pretty simple job to turn the OD.

do not archive


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jack(at)textors.com
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PostPosted: Fri Dec 30, 2011 12:39 pm    Post subject: Bronze-Brass Bearings Reply with quote

Jerry, thanks. I maybe should have been more clear with my post. I have
the bronze for bearings currently. I wanted to know if anyone has been
flying with bronze axel bearings successfully. My preference would be
"oiled bronze" but I can't find them.
Thanks again,
Jack

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Don Emch



Joined: 23 Apr 2006
Posts: 619

PostPosted: Fri Dec 30, 2011 3:17 pm    Post subject: Re: Bronze-Brass Bearings Reply with quote

Jack,

I have plain bronze bushings in mine. Mainly because it is what I had when I made my hubs and didn't want to buy the oilite. As long as you have about .003"-.004" clearance fit and scribe a few lines in the I.D. across the length of them to hold grease you'll be fine. I have never had any issues with mine. I probably have somewhere around 600-700 landings and they've always spun fine. Every annual I take them off and inspect and grease them well. They seem to be wearing really well.

Don Emch
NX899DE


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PostPosted: Fri Dec 30, 2011 4:43 pm    Post subject: Bronze-Brass Bearings Reply with quote

Thank you so much Don, just what I needed. The tolerance data is most
helpful. When you say scribe, literally? As opposed to milling or filing a
groove?

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Posts: 619

PostPosted: Sat Dec 31, 2011 4:55 am    Post subject: Re: Bronze-Brass Bearings Reply with quote

Filing or scribing. As long as you have something there to hold a little grease. Having the clearance is VERY important. You don't want them to run tight.

Don Emch
NX899DE


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PostPosted: Sun Jan 01, 2012 8:09 pm    Post subject: Bronze-Brass Bearings Reply with quote

go to McMaster Carr, they have all of the bushings already made with correct dimensions and out of oilite. And they are cheap.

Gene


[quote] From: jack(at)textors.com
To: pietenpol-list(at)matronics.com
Subject: RE: Re: Bronze-Brass Bearings
Date: Fri, 30 Dec 2011 14:36:35 -0600

--> Pietenpol-List message posted by: "Jack" <jack(at)textors.com>

Jerry, thanks. I maybe should have been more clear with my post. I have
the bronze for bearings currently. I wanted to know if anyone has been
flying with bronze axel bearings successfully. My preference would be
"oiled bronze" but I can't find them.
Thanks again,
Jack

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womenfly2



Joined: 31 Jul 2007
Posts: 224

PostPosted: Mon Jan 02, 2012 5:46 am    Post subject: Re: Bronze-Brass Bearings Reply with quote

I used the oiled bearings from MC. One thing I did do is use some Loctite 640 Bearing Retainer to set the bearing into the wheel hub. If using the oil type bearings just wipe the surface with alcohol to remove the oil and then apply the Loctite. This will keep the bearing from spinning in the wheel hub and wearing it out.

The oiled bearings can be replaced by heating the bearing some and pressing them out.


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PostPosted: Tue Jan 03, 2012 2:12 am    Post subject: Bronze-Brass Bearings Reply with quote

I've been replacing journal bearings for forty years.
It's been my experience and is industry practice to
heat the surounding metal to enlarge the hole.
Heating the bearing directly will enlarge the bearing
itself thus jamming it tighter.

If the bearing is small, od 1" or less, and accessible
from the other side, you can hammer it out with a
brass drift, carefully. Larger ones should be pulled
out with an "inside" puller.You can make one
yourself to fit the application with iron plumbing
parts, a long bolt and nut and a thick washer to fit
the bearing. The pipe and a cap form a recepticle
for the bearing to slide into.

Clif

Life is not a matter of holding good cards,
but rather, of playing a bad hand well!"
Robert Louis Stevenson

Quote:


The oiled bearings can be replaced by heating the bearing some and
pressing them out.

--------
Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=362220#362220


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womenfly2



Joined: 31 Jul 2007
Posts: 224

PostPosted: Tue Jan 03, 2012 4:56 am    Post subject: Re: Bronze-Brass Bearings Reply with quote

... you heat the bearing to just soften the retaining compound, then press it out. Sorry if I was not clear enough on that.

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AircamperN11MS



Joined: 25 Jun 2010
Posts: 733
Location: Lancaster, Ca

PostPosted: Wed Jan 04, 2012 10:56 am    Post subject: Re: Bronze-Brass Bearings Reply with quote

I have brass bushing in my Piet. I just changed the Bungee cords on a friends Piet and she has the plastic automotive Kingpin bushings in hers. The plane was built in the 70's and the bushings still look new. Seems like a great alternative to me.

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PostPosted: Thu Jan 05, 2012 7:49 pm    Post subject: Bronze-Brass Bearings Reply with quote

The bearing or the casing around it?

Clif

Quote:


... you heat the bearing to just soften the retaining compound, then press
it out. Sorry if I was not clear enough on that.


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womenfly2



Joined: 31 Jul 2007
Posts: 224

PostPosted: Fri Jan 06, 2012 4:45 am    Post subject: Re: Bronze-Brass Bearings Reply with quote

.. you heat the BEARING. Since the wheel rims maybe painted an or fabric covered. Does not take much heat to soften the retaining compound.

I would be careful about the loading forces on the plastic bearings vs. wall thickness and length. Just make sure you pick the correct one for the application. A bearing disintegrating in a wheel housing on landing or take-off can be down right exciting!


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Vincent Dunn



Joined: 15 Dec 2016
Posts: 20
Location: Salem, OR

PostPosted: Sat Aug 18, 2018 7:44 pm    Post subject: Re: Bronze-Brass Bearings Reply with quote

I got my bushings from McMaster-Carr with 1.5 inch ID. My axle is also 1.5 inch OD. So there is no clearance and the bushings won't slide onto the axle. How do I remedy that situation? Back to the machine shop or can I make the bush ID bigger myself?

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PostPosted: Sat Aug 18, 2018 11:05 pm    Post subject: Bronze-Brass Bearings Reply with quote

Check to see if the end of the axle was flared a bit in cutting it off.
Gently file the end, not the cut face but the axle surface. You
should smooth the bearing surface anyway. Cut 220 sandpaper
in strips lengthwise. Sand the surface in the same way shoeshine
boys did in all those old movies. Sand, turn axle, sand, turn axle,
etc., etc., then go to 400 grit. Very little gets removed but maybe
enough to clear the bearing.

Clif
www.clifdawson.ca
Fill what's empty, empty what's full, fart joyously, carry matches.
Quote:

I got my bushings from McMaster-Carr with 1.5 inch ID. My axle is also 1.5
inch OD. So there is no clearance and the bushings won't slide onto the
axle. How do I remedy that situation? Back to the machine shop or can I
make the bush ID bigger myself?

--------
Vincent Dunn


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pietflyer



Joined: 19 Jun 2017
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PostPosted: Sun Aug 19, 2018 3:45 am    Post subject: Bronze-Brass Bearings Reply with quote

Have you actually measured the diameters with a micrometer? How much
interference do you have? If just a few thousandths, you can take that off
the axle with emery cloth fairly easier. Much easier to accurately reduce
the axle's diameter that to increase the bushing's diameter.

Jack Phillips
NX899JP
Smith Mountain Lake, Virginia

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