OS BEARINGS

[Brian Young]

Remember the ys61ar, it had a screw port into the rear
bearing area for after lube or something......


--- Wayne Galligan <wgalligan at goodsonacura.com> wrote:
> If you machined a groove towards the rear bearing
> you would lose crank pressure or get blow back to
> the carb opening from the crankcase pressure
> wouldn't you?
> 
> WG
>   ----- Original Message ----- 
>   From: Verne Koester 
>   To: discussion at nsrca.org 
>   Sent: Monday, August 04, 2003 10:39 PM
>   Subject: Re: Mintor 140 Bearings
> 
> 
>   Bob,
>   Interestingly enough, my RX has the groove you
> describe going forward toward
>   the front bearing (which is shielded anyway) but
> nothing rearward. I
>   considered that as a last option if nothing else
> worked, but haven't needed
>   to as yet.
> 
>   Since they already have a shielded bearing in the
> front, I have to assume
>   that groove is there to lube the crank journal in
> the case between the carb
>   opening and the front bearing. If that's the case,
> then why no groove to
>   lube the journal between the carb opening and the
> rear bearing? Friction
>   equals heat, right? Maybe they're relying on the
> heated aluminum case
>   expanding enough to allow oil in there but then
> there'd be no reason for the
>   forward groove.
> 
>   Verne
> 


=====
Brian Young
Tulsa
b4598070 at yahoo.com
918-745-6046h
918-838-0900w

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