- - Prop test ??
(https://www.offshoreonly.com/forums/prop-talk/263733-prop-test.html)
A.O. Razor
10-09-2011 04:54 PM
Originally Posted by gellis11
(Post 3523294)
Are these numbers close? RPM-3800, Prop Pitch 22, Gear Ratio 1.32, Speed GPS 52, Slip 13.3%. Is this prop slip number realistic?
Those numbers are very realistic. About as normal as possible. I've never heard about a 1.32 gear for an Alpha, but I guess you learn something everyday.
Was your old gearcase also the shortie? You mention running a Mirage. Anyway. Running that prop height I would say that the Rev 4 is a good choice. The M+ might work, but it is a somewhat high prop height for a 3 blade. But if you can test it, do so. On all accounts, you will most likely have to start with a 19" to get your rpms up.
gellis11
10-09-2011 06:09 PM
I was planning on replacing the stock exhaust with some EMIs and replacing the stock intake with an air gap intake to free her up a bit. I'm not sure how that will effect my rpms. I know it will give me some increase. Any idea what these two changes will net me?
47 lightning
10-09-2011 07:01 PM
boy that is an ugly prop no offense .
gellis11
10-09-2011 07:29 PM
That really hurts my feelings...I was going to put a clock in the middle and make a necklace out of it.
A.O. Razor
10-09-2011 08:44 PM
Originally Posted by gellis11
(Post 3523433)
That really hurts my feelings...I was going to put a clock in the middle and make a necklace out of it.
