prop ?

[russeller]

would a prop be the problem in why i am not moving that fast i have a 40hp rude 1966

 

[LubeDude]

Re: prop ?

Maybe its arthritis, how old are you?? <br /><br />We really need a little more information.

 

[russeller]

Re: prop ?

at wop 5500 roms i am only get about 20 21 mph i dont know the pitch of the prop and i dont know where to find it but i would think on a 14 ft fiberglass glastron it would get around 30 35 mph

 

[Brew2]

Re: prop ?

Spun prop hub?<br /><br />You could take a marker of some sort and mark both the prop hub and prop itself so the two marks align.... run the motor at WOT for a bit, then check the marks to see if they are still algined. If not, prop hub is spun and needs replacing.<br /><br />Good luck!

 

[walleyehed]

Re: prop ?

Maybe your speedo is off......

 

[russeller]

Re: prop ?

no that is not it!!

 

[Bass Runner]

Re: prop ?

check and see if your boat is waterlogged, how deep are you running the motor?

 

[walleyehed]

Re: prop ?

Before I get nailed again....Is your speedo GPS, paddle wheel, or pitot tube.<br />Question #2, is it reving up higher than normal when getting on plane?

 

[walleyehed]

Re: prop ?

^^

 

[jimmbo]

Re: prop ?

You are over revving, rpm range for that engine is 4000 to 5000 and these engines don't like to turn faster. What prop are you running? a 12in or 13in pitch would be correct on that boat. top speed should be about 25 to 27 mph.

 

[russeller]

Re: prop ?

i am running a pilet tube the speedo was on the boat and i put a new tube on it

 

[russeller]

Re: prop ?

what does water logged mean ?

 

[walleyehed]

Re: prop ?

jimmbo, if he runs THAT engine at 4500, it's gonna have more carbon under the rings than you can remove in a year of decarboning..<br />Russ, what I was getting at is I want to make sure you are getting an accurate reading on the speedo.<br />pitot tubes are known for getting a piece of fuzz, moss or crud of some sort in it and reading wrong..matter-fact, it's the most inaccurate there is.<br />Does this engine tend to rev high when coming out of the hole and then drop slightly in RPM after getting on plane???<br />Your RPM is real good at 5500, just want to make sure the prop isn't slipping on the hub.<br />Keep us posted.

 

[russeller]

Re: prop ?

took the speedo out and behold a peice of FUZZ thank you waleyhed