Whats my top speed?

[Wingn48]

I have a 1990 Maxum 1600 with a force 50, what speed could I expect riding with about 350lbs of people weight?

 

[TxRiverRat]

Re: Whats my top speed?

You need to provide more specific infor before anyone can answer that. What motor/outdrive do you have and what is the horse power? What is the pitch of the propeller? <br /><br />I can't answer the question, but I'm sure one of the resident techies in here can...

 

[JB]

Re: Whats my top speed?

Howdy, Wingn.<br /><br />If your engine is propped properly and your boat is clean you should be able to get to the high 20s, maybe even 30mph.<br /><br />

 

[Wingn48]

Re: Whats my top speed?

Thanks for the onfo.............its got a 11.5 diameter prop, I have no idea how to tell the pitch.

 

[Wingn48]

Re: Whats my top speed?

It got up to 29 mph

 

[6MISFITZ]

Re: Whats my top speed?

If you check on the hub of the prop, both the diameter and the pitch are usually stamped right on it.

 

[Hooty]

Re: Whats my top speed?

To calculate approx. speed, we'll need engine speed (rpm), prop pitch and gear ratio.<br /><br />c/6<br /><br />Hooty

 

[fishthebay]

Re: Whats my top speed?

I have an 85HP Force that gets up to about 42, so I guess yours would be high 20's to low 30's

 

[Bob_VT]

Re: Whats my top speed?

Best judgement is to borrow or purchase a GPS. This will give you the most accurate reading.<br /><br />Bob

 

[JB]

Re: Whats my top speed?

I guess you guys missed Wingn's post, above. He got 29mph.<br /><br />There are 2 ways to estimate top speed with an ideal prop.<br /><br />With engine top rpm, lower end gear ratio, prop pitch and an estimate of prop efficiency you can calculate a theoretical top speed.<br /><br />With boat weight, engine horsepower and boat bottom characteristics you can calculate a theoretical top speed.<br /><br />If you estimate prop efficiency, or boat weight and bottoms pretty accurately you can get amazingly close.