Thread: 81mm ring or repitch 15/19r?
08-12-2007, 12:05 PM #1
81mm ring or repitch 15/19r?
Ok got my first chance to to hold it wot yesterday and was seeing 8100-8200 constant, flashing 8350 when it came unhooked...question is can i repitch or do i really need the adjustable venturi...or is there a cheaper way to mod the standard venturi?
08-12-2007, 12:34 PM #2
Is this with an aftermarket ECU?
You should try re-pitching first if you need to go up/down by more than 200 rpms, unless you plan on getting the adjustable venturi anyway.
I only know of one person who successfully machines the stock nozzles to fit the rings..
08-12-2007, 12:39 PM #3
I read your signature and have come to the conclusion that this is most likely the stock ECU. You can pitch your prop to match your needs but I suggest you get the adjustable nozzle and venturi rings so you can adjust your rpms not only now, but during moderate/extreme temperature and climate changes.
08-12-2007, 12:46 PM #4
I'm spinning the 15/19r on an 83mm ring at 8100rpm in 110
+ temps & 90degree water. If I go to an 82 I lose all the fun of the prop.
When the cooler season is here you'll gain 100+ rpm & will be able to use the smaller rings. Or, you can take the prop out send it off, wait a week or 2 or do it yourself & hope it's the right pitch, then do it all over again when the season or climate changes. Or have 2 props for the changes.
Yeah, i'd say adjustable nozzles.
08-13-2007, 11:40 AM #5
I'm in the peak of the hot season water temp 68 air temp 75 ish...hummidity ha ha no such luck!....don't think i need adjustability just to drop rpms.Maybe i should get a 15/20r?
08-13-2007, 12:10 PM #6
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