ellwood

hi guys. just got a velocity 290 sc. has factory prop on it 28 pitch. 496 mag ho. still learning to drive it but cant get the max rpms past 4700. anyone out there with some suggestions? lower pitch maybe? thanks for any input.

underpsi68

What mph are you seeing?

ellwood

About 60 max.

Padraig

I don't have a 290 sc but I have had a 280 and now a VR 1. That being said I think you have too much pitch for a 496 may go. On my 280 with a 502 mag HO I ran a labbed 27 hydromotive quad four at about 5100 rpm and 72mph. It can with a stock 25 hydromotive and was a tad slower. The 290 sc is a bit more bow heavy then a 280 so I wouldn't think it could swing a 28 pitch unless it was modified.

What brand and modelprop to you have?

Padraig

underpsi68

Also the rpm and mph don't add up. With a 28 prop you should be low 4000's rpm at 60 mph. A 28 at 4600rpm should be around 70mph.

Are you over trimming the drive?

Padraig

Good point.....I didn't do the math.
Elwood, don't take this personally but need to know how experienced you are in running and trimming a boat?
Is the engine stock?
Is the speed you quoted from a GPS?
Do you have trim tabs?

Padraig

PS. Velocity are great boats..... we'll figure it out.

ellwood

Thanks . It's a bravo 4 blade.

SB

iTrader: (1)

Test report, not sure what it's worth.
https://www.boats.com/reviews/powerb...locity-290-sc/

Padraig

According to the test it came with a labbed 28 prop so assuming the prop is in good condition it could be correct. As I said my 280 with 502 ran a labbed Hydromotive 27....a 28 bravo is actually closer to a 27 so.........

Padraig

underpsi68

I remember the conversation I had with Kenny after i bought my 280. He said the prop should be a 27 (between a bravo 26 & 28). I don't hit the limiter on my stock 26 Bravo. Will run 68 just about any day with a lot of fuel and passengers. Best I seen was 74 with the stars all lined up. I sent Velocity my Mercury labbed 28 bravo one for them to tweak. What a waste of money. Now I'm running a stock 26 bravo one and couldn't be happier. Personally I'm not chasing the last mph. Just looking for good all around prop.