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-   -   Formula 419 prop or rpm limiters (https://www.offshoreonly.com/forums/prop-talk/262679-formula-419-prop-rpm-limiters.html)

born free 09-20-2011 07:57 PM

Formula 419 prop or rpm limiters
 
Hi guys I finished testing my 419 here are the stats.

before procharging.....................5% m1 procharger x 3
502 x 3 mpi................................502 x 3 procharged mpi
5200 rpm= 66 mph.....................5200 rpm= 81 mph
25p mirage.................................28p bravo props X 3
1.5 gear.....................................1.5 gear

The problem is i am still bouncing of my rev limiters. there is 100 hrs on the motors. do i repitch my 28 to 30 and lab them, knowing each pitch is 200 rpm drop.this will increase the load on the bravo drives. But there are 3 of them. or do i change the limiters to 5800 rpm and increase both boost and working rpm on 100 hr motors. thx

jeff32 09-20-2011 11:37 PM

only 66 mph before procharging?

FIXX 09-20-2011 11:44 PM

fixx
 
go to labbed bravo 30's and raise the rev limiters to 5400 and go boating.:drink:

born free 09-21-2011 06:46 AM


Originally Posted by jeff32 (Post 3508268)
only 66 mph before procharging?

If i put the 25p 4 blade bravos on and opened it up on water with a 2 foot chop I could get a 71 mph on gps. with 2 people aboard. but i lost alot of mid range due to lack of chop on my lake. Most of my boating is on a small lake and river. Its an sr1 non stepped hull so it needs the chop. boat is comfie and well built. In other words heavy !

Griff 09-21-2011 11:09 AM

Try some stock Bravo 1 30's to get a baseline and go from there.


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