Ed Anderson wrote:

Paul,
    Here is the list that Ken Powell and I have put together.  We are still
researching the outer coolant "O" ring and the tension bolt washers.

Ed Anderson

>From Ken

I ordered the following Orings this morning from McMaster-Carr:
1.  Inner coolant oring
    part # = 9319K239
    asa568a-175
    qty = 4,  price = $9.94 each
2.  Inner oil control oring
    part # = 9319K261
    asa568a-245
    qty = 4,  price = $7.81 each
3.  Outer oil control oring
    part # = 9319K221
    asa568a-158
    qty = 4,  price = $7.17 each

Ed and I agree that these are the right ones.  I will install
them and test for fit and get back to you.

Ken Powell

Ed Wrote:

Ken's Part numbers (Not ASA numbers)  specify the Teflon Coated Silicon Oil
control "O" rings (the -175 and -245 numbers).  For those on a tighter
budget there is an alternative for the oil control "O" rings, these are the
cheaper viton "O" rings.    note the ASA dash numbers are the same as the
Teflon Coated Silicon  but the part  numbers are different.

2.  Inner Oil Control Ring
    Part # = 9464K261
    ASA568A-245
    Price: Package of 5 for $12.82 = $2.57 each
3.  Outer Oil control Ring
    Part # = 9464K116
    ASA568A-158 (Note the ASA and Dash number are the same for viton
andTeflon coated Silicon rings, the ASA and Dash number only pertain to
size -NOT material its made of)
    Price:  Package of 2 for $4.90, = $2.45 each

Viton is not an elastomer at cold temps like 32F.   Remember the Challenger?
Your engine can leak just like their solid rocket boosters.

Bill

 
The AirCraft Rotary Engine NewsLetter.              Powered by Linux.

http://home.earthlink.net/~rotaryeng/            http://www.linux.org