Reply
 
Thread Tools Search this Thread Display Modes
 
Old 12-14-2007, 05:13 PM   #1
Lt. Commander

 
Join Date: Jun 2007
Location: S.Wales
Posts: 218
Default Need help on High 5 prop Q

Any prop experts out there ?
Picked up 2 2nd hand props ….. both are Stainless Steel High 5 props ….
Neither has any dings or damage, but noticed that they both have what I would class as a slight straight portion on the leading edge of each blade.
I have never had that on my previous stainless props – but never had a High 5 before.

I would have thought that wear this even on all 5 blades on both props is unlikely, but thought I would check.
If you have a High take a look at the pictures I have uploaded and let me know if your prop has same ‘slight flattening’

Pic 1 one shows the blade
http://tinyurl.com/3aj8cp

Pic 2 is darkened off to help display
http://tinyurl.com/38hpox

Pic 3 I have indicated the flat portion.
http://tinyurl.com/2oh39m
__________________

Argonaut is offline   Reply With Quote
Old 12-14-2007, 09:07 PM   #2
Admiral

 
seapuppy's Avatar
 
Join Date: Nov 2005
Location: Everett Wa
Posts: 4,681
Default

I would say that it would not affect any performance at all ......looks like a nice prop!!...
__________________

__________________
Don't compare your life to others. You have no idea what their journey is all about.
------------------------
SSN683 Association member
Par Excellence
------------------------------
2008 Bayliner 340 - "Wild Whim"
--------------------------------------
I live in my own little world....but it's okay-they know me here!!!

Avid practitioner of the martial art: KLIK-PAO.
Tap-Rack-Bang

Anyone that sez "Size doesn't matter" has never owned a boat!
seapuppy is offline   Reply With Quote
Old 12-15-2007, 07:11 PM   #3
Lt. Commander
 
Join Date: Jun 2006
Posts: 235
Send a message via MSN to Brit Rider
Default

Just checked my high 5.. looks normal. what pitch have you gone for?
__________________
Brit Rider
Brit Rider is offline   Reply With Quote
Old 12-16-2007, 10:38 PM   #4
Lt. Commander

 
Join Date: Jun 2007
Location: S.Wales
Posts: 218
Default

Quote:
Originally Posted by Brit Rider
Just checked my high 5.. looks normal. what pitch have you gone for?
do I assume that you mean my prop looks normal ? .... (ideal answer if it is)

I spoke to Picton's' ... and they advised that the 21" is ideal .......... 23" is standard, and dropping to 21 plus the 5 blades will give me loads of hole shot.
They advise that going to 19" will risk over revving.

I have put the standard 23" 3 blade Aluminium at the moment, and when I take it out in Spring I'll take some rest to plane times, Max speed & WOT measurements, and then swap to High 5 and repeat.

I'll post the results here .. maybe of interest.

Now have a spare High 5 to sell ....... maybe I'll hang on till spring and put it on eBay.
Argonaut is offline   Reply With Quote
Old 12-17-2007, 01:35 AM   #5
Commander
 
Join Date: Jun 2006
Posts: 298
Default

I'm interested. What pitch is your spare?

What part # is it? I have a 4.3 Merc in a 2006 1800SR-3.
racer2c is offline   Reply With Quote
Old 12-17-2007, 09:17 AM   #6
Lt. Commander

 
Join Date: Jun 2007
Location: S.Wales
Posts: 218
Default

It's a 21" pitch (both are the same)

Mercury pn: 48-815760
Argonaut is offline   Reply With Quote
Old 12-17-2007, 10:27 PM   #7
Lt. Commander

 
Join Date: Jun 2007
Location: S.Wales
Posts: 218
Default

Also posted same Q to prop repair specialist .. and he confirms the small straight portion on each leading edge is design intent ... Mercury state it's patented and what makes High 5 so good.
Argonaut is offline   Reply With Quote
Old 12-18-2007, 04:07 AM   #8
Commander
 
Join Date: Jun 2006
Posts: 298
Default

thanks. If you ever want to sell it let me know.
racer2c is offline   Reply With Quote
Old 12-21-2007, 01:05 PM   #9
Lt. Commander
 
Join Date: Jun 2006
Posts: 235
Send a message via MSN to Brit Rider
Default

The 19 does allow over revving so you have to be careful with the throttle... ideal for wakeboarding.. cruising its awful. It's a trade off.

I run a custom pitched 20" HIgh five which works a charm... it can over rev but only at max WOT which you shouldn't be running at anyway.. works well for my application.
__________________
Brit Rider
Brit Rider is offline   Reply With Quote
Old 12-21-2007, 02:10 PM   #10
Lt. Commander

 
Join Date: Jun 2007
Location: S.Wales
Posts: 218
Default

Quote:
Originally Posted by Brit Rider
The 19 does allow over revving so you have to be careful with the throttle... ideal for wakeboarding.. cruising its awful. It's a trade off.

I run a custom pitched 20" HIgh five which works a charm... it can over rev but only at max WOT which you shouldn't be running at anyway.. works well for my application.
My dealer advised that as well ... hence his reccomendation to go with 21" ... dropping to 19" increases revs, but High 5 drops it by 400rpm, and they just about balance out.
__________________

Argonaut is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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 Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
navigation light switch problems tha89sx Electronics 3 05-31-2009 09:29 PM
Propeller Clutch Matangolas Engines 20 02-18-2008 05:04 PM
ouyboard engine bracket zt260 Maxum Owners General Discussions 1 01-07-2008 11:06 PM
anyone going out this weekend??.........26oct07 seapuppy Maxum Owners General Discussions 2 10-27-2007 01:15 PM
Oil Change Pump bg75flh Maxum Maintenance 2 10-21-2007 12:55 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT. The time now is 02:06 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2020, vBulletin Solutions, Inc.