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<DIV>I cut away the thin part of the full disk on my 140s and it made zero difference in bearing life. The sealed SS BB made all the difference.</DIV>
<DIV> </DIV>
<DIV>Dave</DIV>
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<BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">-------------- Original message -------------- <BR><BR>> Bob, <BR>> The 1.4 rear bearing doesn't get enough lubrication. I trashed a brand new <BR>> stainless bearing two seasons ago in 4 flights. Felt like it had gravel in <BR>> the bearings. Went home, took it out, and it looked like it had a whole <BR>> season's worth of rust on it. Magnification revealed that it was actually <BR>> burnt oil. Put in the sealed bearing and have at least 40 gallons of fuel <BR>> through it and still running strong. Bearing feels as good as the day I put <BR>> it in. I don't know if the lack of lube is caused by the full disk <BR>> counterweight on the crank or if the tuned pipe has some sort of scavenging <BR>> effect on the crankcase. Don't care anymore because it runs great and the <BR>> bearings are lasting longer than any engine I've ever had. <BR>> <BR>> Verne <BR>> <BR>> <BR>> ----- Original Message ----- <BR>> From: <RCAEROBOB@COX.NET><BR>> To: <DISCUSSION@NSRCA.ORG><BR>> Sent: Friday, May 20, 2005 11:37 AM <BR>> Subject: Re: [SPAM] Re: [SPAM] Re: A Bearing Tip - Boca Bearing Newsletter <BR>> <BR>> <BR>> > Must be a LOT of differences in how those bearings are loaded between the <BR>> > two motors. Fascinating! <BR>> >> <BR>> >> From: Rodney Tanner <RODNEY19821982@YAHOO.COM><BR>> >> Date: 2005/05/20 Fri AM 11:33:19 EDT <BR>> >> To: discussion@nsrca.org <BR>> >> Subject: [SPAM] Re: [SPAM] Re: A Bearing Tip - Boca Bearing Newsletter <BR>> >> <BR>> >> Thanks Verne, <BR>> >> That is what I had heard. <BR>> >> <BR>> >> Rodney Tanner. <BR>> >> <BR>> >> Verne Koester <VERNE@TWMI.RR.COM>wrote: <BR>> >> Rodney, <BR>> >> If you're putting it in an O.S. 1.4, definitely leave the seals in. <BR>> >> You'll get 300-500 flights with the sea
ls in. With them out, you'll be <BR>> >> lucky to put 5 gallons through the engine before they're shot! <BR>> >> <BR>> >> Verne Koester <BR>> >> ----- Original Message ----- <BR>> >> From: Rodney Tanner <BR>> >> To: discussion@nsrca.org <BR>> >> Sent: Thursday, May 19, 2005 10:33 PM <BR>> >> Subject: [SPAM] Re: A Bearing Tip - Boca Bearing Newsletter <BR>> >> <BR>> >> <BR>> >> Bob, So using an OS 140 EFI bearing, is it advisable to remove the seals? <BR>> >> Rodney <BR>> >> <BR>> >> Bob Pastorello <RCAEROBOB@COX.NET>wrote: <BR>> >> Since I use theirs, I get this e-newsletter. This month's tip; <BR>> >> <<IF <BR remove not should you seals rubber two has bearing engine Front your>> >> them. These bearings have their own grease and can help stop oil leaks. <BR>> >> If your bearing has two shields, we recommend you remove one of them. For <BR>> >> instructions on removing your shields take a look at this Help Section. <BR>> >> <BR>> >> Your Rear engine bearing should be open on both sides to allow as much <BR>> >> fuel as possible to pass through and act as a lubricant. You may however <BR>> >> want leave one shield on in the rear which would help to protect the rest <BR>> >> of the engine from any foreign matter getting through. This should not be <BR>> >> done with one seal. If you find your engine is stingy in getting fuel to <BR>> >> the rear, you should definitely leave the bearing open. <BR>> >> <BR>> >> In our next issue of the Boca Bearings Tips & Advice Newsletter we will <BR>> >> show you how to remove your bearing shields. >> <BR>> >> <BR>> >> Note - if you open your crankcase, using sealed bearings, and the <BR>> >> crankshaft counterweight it dry-looking, or the lower part of the bearing <BR>> >> i
sn't pooling oil, you may think about removing the seals. I do, for <BR>> >> this reason. <BR>> >> <BR>> >> Bob Pastorello <BR>> >> www.rcaerobats.net <BR>> >> rcaerobob@cox.net <BR>> >> <BR>> >> <BR>> > <BR>> > Bob Pastorello, El Reno, OK, USA <BR>> > rcaerobob@cox.net <BR>> > www.rcaerobats.net <BR>> > <BR>> > ================================================= <BR>> > To access the email archives for this list, go to <BR>> > http://lists.f3a.us/pipermail/nsrca-discussion/ <BR>> > To be removed from this list, go to http://www.nsrca.org/discussionA.htm <BR>> > and follow the instructions. <BR>> > <BR>> > List members email returned for mailbox full will be removed from the <BR>> > list. <BR>> > <BR>> > <BR>> <BR>> ================================================= <BR>> To access the email archives for this list, go to <BR>> http://lists.f3a.us/pipermail/nsrca-discussion/ <BR>> To be removed from this list, go to http://www.nsrca.org/discussionA.htm <BR>> and follow the instructions. <BR>> <BR>> List members email returned for mailbox full will be removed from the list. <BR>> </BLOCKQUOTE></body></html>