flyrotary@lancaironline.net Mailing List Archive

Rethinking my last post,

I just realized that the typical rotary, in automotive use uses crankcase oil for seal lubrication.

In my assembly, I will be using pre-mix in the fuel. the crankcase oil will never see the chambers (if I am lucky).

Any advice from you or other on this list what to use for break-in pre-mix?

Since the bearings, bushing and eccentric shaft have been relatively untouched, (14K on engine since rebuild) it seems as synthetic in the case would be OK however, the rotors seem to have different needs on break-in

Rich

In a message dated 6/27/2020 12:08:01 PM Central Standard Time, flyrotary@lancaironline.net writes:

I used a Texaco fleet oil for two hours at 2000 RPM. Then dump the oil and check the filter paper for metal.

Then 40 or 50 weight Redline racing oil. Never over 180 degrees on the coolant. Then a lap at part throttle then good for 9,600 RPM at full throttle. No oil related failures in 35 years of racing.

You could do 4 hours at 2000 RPM no load or part load on fleet oil. Should be plenty. Never over 180 degrees.

It worked for me...............Lynn E. Hanover

In a message dated 6/27/2020 10:00:22 AM Eastern Standard Time, flyrotary@lancaironline.net writes:

So I Googled break-in procedures for the RX8.

Less than 4000RPM for the first 600-1000 miles.

I don't see that happening. I don't think I can keep the RV-4 level at

less than 4,500 RPM, depending on prop.

And I sure want full power at takeoff and climb to pattern altitude.

I guess I could run it on the ground for 10 hours at varying RPMs below

4000, but really?

What did you do with a new Renesis?

Finn

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