RCU Forums - View Single Post - Ooh, look what papa got for early Christmas..

09-15-2008, 11:57 AM

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I-Love-Jets

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RE: Ooh, look what papa got for early Christmas..

Here you can see the OPS disk valve versus drum valve intake unit. The latter usually is used with the actual OPS .67 and .80 marine engines.

There are also many other parts interchangeable between the .60/.65/.67 and .80 OPS aero and the marine versions such like
[ul][*] conrod (non needle bearing)[*] front housing + bearings[*] crank (only .65 to .80)[*] carb (a 1.0 mm thick metal sleeve is needed in combination with the drum unit to match the 16 mm dia collet)[*] cylinder cooling head[*] piston pin (only .60 to .67)[*] integral type speed spinner
[/ul]
The second pic shows different OPS .65/67 head button chamber designs:

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