speed rpm and prop size

[jordys skiboat]

how fast are you bolks getting out of your epics with the 1uzfe 4 liter and what size prop are you spinning and how many revs i will hope to hear from someone soon thanks.

[toyotafreak]

Just mapped a few weeks ago (Epic S22, no ballast, full fuel tank, OJ Stainless 4-blade 13x13)

RPM        MPH (GPS)
2000           9.5
2500         17.7
3000         24.1
3500         28.9
4000         32.6
4500         36.0
5000         38.9
5500         41.3
5780         42.8


Look at the LITERATURE page at the 1UZ jpg link. In it you'll find the advertised RPM, fuel burn, speed table. Speeds match up between 1 to 2 mph through out, which is surprising because I'm sure they'd use the direct drive (and maybe even the smaller Epic 21) for this kind of data.

Any way you cut it, it's good stuff.

[jordys skiboat]

thanks very much for the reply on the boat speed. would like to chat with you more. are you from the u.s.a im from austraila and my skiboat is the second one in australia to have a 1uzfe in it

[jordys skiboat]

what sort of softwear did you use to map your boat and what is your air/fuel ratio