Go Back  Offshoreonly.com > Technical > General Q & A
Prop pitch, speedometer >

Prop pitch, speedometer

Notices

Prop pitch, speedometer

Thread Tools
 
Old 04-14-2003 | 10:59 AM
  #1  
pozguy
Guest
 
Posts: n/a
Default Prop pitch, speedometer

I am currently running a S.S. Stileto 3 blade 14 1/4 by 19 prop and at wide open throttle 5000 rpm am going about 58 miles per hour. My boat is a 2002 Caravelle Interceptor 212 with a 5.0L M.P.I. with 260 h.p. I am wondering what type of prop will give me more speed at top end, do I need more pitch ? Also we were out yesterday running at wot for about 10 minutes and my speedometer started to drop it seemed like in 10 mph increments, we were going wide open and the speedo read 10 mph. We stopped for a couple minutes and started again and it was fine, can anyone help? Thank you very much.
 
Reply
Old 04-14-2003 | 11:19 AM
  #2  
bobby daniels
Guest
 
Posts: n/a
Default

never heard of such a thing unless the speedo had trash on it ,whats the max rpm for that motor ??
 
Reply
Old 04-15-2003 | 04:11 AM
  #3  
pozguy
Guest
 
Posts: n/a
Default

max rpm for this engine is 5000 rpm. thanks!
 
Reply
Old 04-15-2003 | 05:38 PM
  #4  
Registered
20 Year Member
 
Joined: Aug 2001
Posts: 919
Likes: 13
From: OPKS & LOTO
Default

You're there. Adding more pitch might will decrease your rpm's and could have negative effect on top speed. You may be able to cheat and find a couple more mph out of a different prop by balancing or lab finishing. Check with any of the great prop guys on the board and they will help. (HoustonProp or Throttle Up Prop)
Holy Smokes is offline  
Reply
Old 04-15-2003 | 09:11 PM
  #5  
pozguy
Guest
 
Posts: n/a
Default

Thanks guys, cant wait till I am finished college so I can afford some of those big blocks so I wont have to worry about pitch! Stay cool!
 
Reply
Old 04-16-2003 | 01:22 AM
  #6  
HOUSTONPROP's Avatar
Registered
 
Joined: Jul 2002
Posts: 1,387
Likes: 0
From: Houston,texas
Question try out board prop/

Thanks KC, anyway I bet the 19 stilleto pops out quick on plane ? you could try a laser two 21 pitch which is like a Mirage but really a outboard prop but has the large exhaust hole to help it plane out quicker ,and 9SHOULD RUN FASTER) IT HAS MORE RAKE WHICH WILL CREAT MORE LIFT AMD LESS DRAG AND FASTER SPEEDS,I HAVE ONE I WILL SEND YOU IF YOU WANT TO TRY IT OUT (NO OBLIGATION JUST LET ME KNOW /Darin I cant post my number as I need to send in some$$$$$$$$$$$$$$$$$$$$$$$ oh is the speedo pickup in the outdrive or is it on the back of the boat/it may have kicked up or just loosing pressure at higher speeds.
HOUSTONPROP is offline  
Reply
Old 04-16-2003 | 05:01 AM
  #7  
Registered
 
Joined: Dec 2002
Posts: 959
Likes: 0
From: chesapeake bay md
Default

Darin is your phone number still 281-580-7767?
mmwalters is offline  
Reply
Old 04-16-2003 | 06:31 AM
  #8  
HOUSTONPROP's Avatar
Registered
 
Joined: Jul 2002
Posts: 1,387
Likes: 0
From: Houston,texas
Talking prop question/walters

Originally posted by mmwalters
Darin is your phone number still 281-580-7767?
yes sirrrrrrrrr!!!!!!!!Thank You!!!!!!!!!!
HOUSTONPROP is offline  
Reply
Old 04-16-2003 | 12:27 PM
  #9  
mcollinstn's Avatar
Platinum Member
20 Year Member
Platinum Member
 
Joined: Sep 2001
Posts: 5,769
Likes: 150
From: tn
Default

You had trash in the speedo pickup tube. When you stopped and/or reversed the prop, it washed the junk out of/off of the pickup. I keep a 1/8 diameter drill bit glued into a piece of wood dowel. It is my pickup cleaner outer and works well using it with the boat in the water. It also floats, so if you drop it, it falls UP to the surface.
mcollinstn is offline  
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
prostockcat
General Q & A
4
05-11-2008 08:45 PM
white scarab
Prop Talk
4
06-13-2006 06:26 PM
white scarab
Scarab
0
06-12-2006 05:19 PM
Rick G
Formula
3
09-10-2003 04:57 PM
bvs629
General Q & A
23
03-19-2003 11:07 AM

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.