Today's Message Index:
----------------------
1. 04:00 AM - Re: cam shaft bearings (Lynn Matteson)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: cam shaft bearings |
I've just downloaded the 55 pages of the Designer's Handbook from
Glacier Garlock Bearings, here in the USA. Even though the
publication is written in my native English, it all looks like Greek
to me. : ) But I'll study it and see if I can determine why my
bushings might have failed so early. It seems to me on first look
that there needs to be better lube, less mechanical pressure for the
size of the bushing area, or different bushing material. I have
already dreamed up a method for pressure-lubing the area, but so far
that is just dreaming.
It seems to me that an oscillating bushing of this size, under the
load that a rocker arm endures, begs for the best possible
lubrication versus materials compatibility.
Lynn Matteson
Grass Lake, Michigan
Kitfox IV Speedster w/Jabiru 2200
flying w/275+ hrs
On May 9, 2007, at 11:12 PM, JohnDRead@aol.com wrote:
> Hello Listers:
> The Glacier DU online catalog has all of the application and
> spec info. In a past life I used a lot of these bearings with out
> any problems. They are similar to an Oilite sintered bronze bearing
> except the "spaces" on the DU are infiltrated with teflon which
> should provide good boundary layer lubrication if there is brief
> oil starvation. One problem with oscillating bearings is to get
> adequate lubrication into the bearing, direct pressure feed is to
> be preferred over splash lubrication. The latest Jabiru engines
> have hydraulic lifters so I suppose there is a real need to examine
> the engine oil for particles as there theoretically there will be
> zero tappet clearance.
>
> Regards, John Read
>
>
> See what's free at AOL.com.
> http://www.matronics.com/Navigator?JabiruEngine-List _-
> ===========================================================
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|