OS140RX Bearings

[Ron Van Putte]

On Jun 16, 2005, at 1:35 PM, Verne Koester wrote:

> Amram,
> You're probably already on borrowed time. You need the rear bearing 
> for the EFI version of the 1.4 which is a sealed stainless bearing. 
> The O.S. part number is 29430010. You'll get between 300-500 flights 
> with this bearing. The original bearing is usually only good for 3 - 5 
> gallons of fuel.

That was my experience.  I replaced the original bearing after three 
gallons of fuel.  It needed to be replaced, too; I could feel the 
unevenness and the "sticking" feeling already.  I ordered the OS 1.40 
EFI bearing Verne mentioned.

Removal and replacement of the rear bearing WAS NOT a "walk in the 
park".  I had to use a toaster over and a freezer to do the job.  The 
toaster oven, set at about 450 degrees, enabled me to remove the 
crankshaft from the motor.  I had to put the crankshaft back in the 
oven two more times before the old rear bearing could be convinced to 
come off the crankshaft.  Then I had to put the new bearing in the oven 
and the crankshaft in the freezer, before I could get the two mated up. 
  By the time the motor was back together, it had taken two hours to do 
the job.  I hope this new bearing lasts 300-500 flights.

Ron Van Putte

> ----- Original Message ----- From: "Amram Private" <amram at leshed.com>
> To: <discussion at nsrca.org>
> Sent: Thursday, June 16, 2005 1:45 PM
> Subject: OS140RX Bearings
>
>
>> Hello to all
>> My OS140RX already accumulated 15 hours and I am thinking of 
>> purchasing
>> set of bearings to be ready for the days.
>> I heard many opinions on this issue. I'll be happy if those who are
>> experienced will advise...
>> Thanks in advance to all answers
>> Amram Leshed
>>
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