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Old Sep 23, 2012, 07:16 AM
Wake up, feel pulse, be happy!
C₄H₁₀'s Avatar
United States, AK, Fairbanks
Joined Aug 2009
12,435 Posts
Help!
Looking for compatible muffler bearings

I got what looked like a good deal on a used four-stroke motor last April. It's actually in pretty good condition aside from the muffler bearings. They're shot. It's got a nice tuned pipe on it but the bearings start grinding and sticking as soon as it warms up a little. They definitely need replacing, but I can't for the life of me find any new ones to install and I really don't want to buy a whole new muffler. Tried searching RCG and Google, and I perused Boca's stock. Nothing's come up yet.

Can somebody help me get my bearings here?
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Old Sep 23, 2012, 07:19 AM
I don't want to "Switch Now"
pmackenzie's Avatar
Toronto (Don Mills), Canada
Joined Dec 2002
16,930 Posts
Try Sprawlmart - same aisle as the left handed screwdrivers
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Old Sep 23, 2012, 08:09 AM
Dude, get me some ice cream!
Felt_ripper 23's Avatar
United States, MA, Amherst
Joined Apr 2012
797 Posts
Lots of the guys at the club get their engine parts directly from the disributer. Try that. What company is the engine from?

"Electric plane talk?"
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Old Sep 23, 2012, 08:13 AM
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Ron H's Avatar
Bishopville S.C.
Joined May 2003
4,053 Posts
I had one with a similar problem. On mine the bearings worked loose somehow and were rattling around in the pipe. I ended up prying them out and found it actually worked better without them. I don't recall the muffler brand, but the bearings looked suspiciously like marbles. I was going to post a pic, but it seems I have lost my marbles.
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Old Sep 23, 2012, 08:17 AM
Registered User
Joined Feb 2012
1,912 Posts
My understanding is that you only need muffler bearings if you are going to run it 'dry'. If you put a LOT of grease on it, you should be fine. This is how they did it in the old days. Just pack that muffler full of grease, and all should be fine.
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Old Sep 23, 2012, 08:29 AM
25+ years of RC flying
BigIron357's Avatar
United States, FL
Joined Aug 2012
1,490 Posts
Be sure to get metric bearings... they fit better.
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Old Sep 23, 2012, 08:49 AM
Fueled by Arabica Beans
ChillPhatCat's Avatar
United States, NY, Syracuse
Joined Oct 2008
4,036 Posts
Here you go: http://kalecoauto.com/index.php?main...products_id=48
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Old Sep 23, 2012, 08:55 AM
Snappy Title On Backorder....
tsymonds's Avatar
United States, TX, Killeen
Joined Jun 2011
1,070 Posts
I had a three stroke once that acted up in a similar fashion. Turned out it was a bent Johnson rod where it attached to the Canuter valve. This caused a lot of problems with the Bluxphamanian fuel pot sensor which ran it stoic and overheated the muffler bearings. I tried packing the muffler with grease as suggested earlier but still had the same issue. Turns out it needed striped grease with metric threads and a left twist. After that I haven't had any problems with muffler bearings wearing out or over heating but now I can't keep the plane clean for some reason. Every time I fly it ends up with a new pin stripe pattern and it won't come off unless I run it through the dishwasher. She's getting pretty tired of it though.
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Old Sep 23, 2012, 10:16 AM
I don't want to "Switch Now"
pmackenzie's Avatar
Toronto (Don Mills), Canada
Joined Dec 2002
16,930 Posts
Quote:
Originally Posted by ChillPhatCat View Post
Like I said, same aisle as the left handed screw drivers , metric no less!

http://kalecoauto.com/index.php?main...products_id=51
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Old Sep 23, 2012, 11:23 AM
Shelter Kitty "Orange Death"
bartricky's Avatar
United States, FL, Monroe
Joined Jan 2008
3,165 Posts
Muffler bearings have been been a topic of discussion back before your father was born.
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Old Sep 23, 2012, 11:56 AM
AMA7224 LSF1832
Leadchucker's Avatar
United States, DE, Seaford
Joined Sep 2008
3,527 Posts
No one mentioned checking the frammis or gizinta?
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Old Sep 23, 2012, 01:22 PM
Electric Coolhunter
Thomas B's Avatar
United States, TX, Fort Worth
Joined Jun 2000
14,620 Posts
I have found muffler bearings in the same aisle of the store as the radiator caps for the old style VW Beetles....
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Old Sep 23, 2012, 02:42 PM
AMA7224 LSF1832
Leadchucker's Avatar
United States, DE, Seaford
Joined Sep 2008
3,527 Posts
All your answers are in this video:

"Turbo Encabulator" the Original (1 min 49 sec)
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Old Sep 23, 2012, 02:50 PM
characters welcome!
Mark Wood's Avatar
United States, CA, Bear Valley Springs
Joined Feb 2000
26,446 Posts
Quote:
Originally Posted by Felt_ripper 23 View Post
Lots of the guys at the club get their engine parts directly from the disributer. Try that. What company is the engine from?

"Electric plane talk?"
I guess we know who didn't read the OP.

mw
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Old Sep 23, 2012, 03:57 PM
AMA 994002
matiac's Avatar
United States, RI, Westerly
Joined May 2012
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Family Dollar. They're in the same aisle with the Knifling Pins, and Garagekeys.
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