prop size for my boat?

[gezy]

gone big 23 pich .so see how i go with at.and i got a 21 if thats no good.

[Franco_2100SC]

What did you find? Remember to keep RPM's for WOT near the Manf recommendations. Loading the engine down is not a good thing.

KKKKFL[/list]

[gezy]

what have i done now ops:

been out for a run .did the first partrun in@2000rpm.

next part is to get up on plain and back it of so just to keep it there
3000rpm or so.

now im runing that 23pich prop.when it starts to pull upto 3000rpm
then its like it has no grip stops pulling and revs like mad?.

im @3000rpm when it will do that.drop it back 2000 to 2500
and it will pull ok.now thats odd one to me.

[seapuppy]

you spun the prop.....take it off and to a prop shop..have them give you a new hub!!....

[gezy]

ok thanks,

with my luck i was thinking the drive had gone.
i will put the 19 on for now. thanks,s :wink:

[gezy]

i can now ren the enging a bit more now to plane.but will not get up on plane with that 19 pich prop.

just give it a go 4000rpm 18mph to 20.

[gezy]

23p on now and im upto 40mph at wot.so

still need some work for 50!!