"Brian D. Cain" wrote:

Hey fellas.  I'm assembling an engine tonight and am using the

Atkins

Rotary

Kit that comes with the corner seals/springs, apex seals/spring,

etc.

along

with their supplied (aftermarket) Viton oil control ring o-rings.

Has

anyone had any experience building rotors using these o-rings in the

control

ring casings?  I'm having a heck of a time getting these things in

the

control ring grooves in the rotors; it's almost as if they're a few
thousandths too thick or something.  Any tips?

Thanks,

B

I don't recommend Viton. Teflon encapsulated silicone is good for 100

degrees

F higher temp. The TES sizes we use slip right in. Perhaps the Teflon

coating

helps.  http://www.creavey.com/ The cost is no higher.

Paul Lamar

Brian, I also used Atkins Viton oil control ring 0-rings on my last

engine

rebuild (before the TES were readily available) and you are right, they

are

tough to get seated in the grooves. Much harder than the stock rings

from my

experience with both.    I lubricated the "O" rings with vasoline,

placed

them in the metal ring holder and then placed the assembly over the

groove

in the rotor.  Then I got a piece of 2x6 plank and placed it over the

metal

ring and by pressing my upper body weight on the 2x6 (trying to keep the
force centered on the metal ring center point, I could get them in.  If

you

let the metal ring slant to any side, even slightly, it tends to bunch

up

(outside the groove) on the opposit side.  Not high tech, but it worked

for

me.

Ed Anderson

Spend a few bucks more Brian and put in teflon. Your customer will

appreciate

it the next time his engine overheats :) Maybe you can sell those viton

rings

to one of your rotary engine building competitors :)

Paul Lamar

"Brian D. Cain" wrote:

Hmmm.  Alrighty, then.  This is kind of annoying because I waited for awhile
for these
to come in not to mention being surprised by this difficulty while I'm
wanting to get this
thing done and out the door.  I may have to use the stock outers being on a
time crunch.

In any event, I've talked to Jeff at Creavey before but I've yet to get a
size/dimension of
the inner and outer o-rings.  Anybody have those handy?

Thanks for the tip btw Ed.  These things are a real pain in the rear-end.

B

 
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