Reply
 
Thread Tools Search this Thread
 
Old 27 May 2008, 11:39   #11
Member
 
Cookee's Avatar
 
Country: UK - England
Town: Salcombe, Devon, UK
Boat name: BananaShark
Make: BananaShark
Length: 10m +
Engine: 2xYanmar 260 diesels
Join Date: Mar 2003
Posts: 4,225
Quote:
Originally Posted by Mollers View Post
I've just mailed Steel Dev for an exact match with a Viper 23"
I think the best ideas is sell the 21 and buy something else - as Mollers has done ~Steel Developments are great at providing solutions for just this sort of issue.
__________________

__________________
Cookee
Originally Posted by Zippy
When a boat looks that good who needs tubes!!!
Cookee is offline   Reply With Quote
Old 28 May 2008, 07:37   #12
Member
 
Country: UK - England
Town: westlancs/anglesey
Boat name: Humper 2
Make: osprey vipermax
Length: 7m +
Engine: evinrude e-tec 250hp
Join Date: Apr 2005
Posts: 74
which prop?

Hi Mollers have you tried the 4 blade yet?
__________________

__________________
humper is offline   Reply With Quote
Old 28 May 2008, 07:55   #13
Member
 
Country: UK - England
Town: Mighty Penryn
Boat name: Little Joe.
Make: Avon Searider
Length: 4m +
Engine: Honda BF50
Join Date: Aug 2005
Posts: 8,841
Quote:
Originally Posted by humper View Post
Hi Mollers have you tried the 4 blade yet?
Yep, chucked some Moet over it last night. See PM.
__________________
Mollers is offline   Reply With Quote
Old 18 June 2009, 04:39   #14
Member
 
Country: UK - Scotland
Town: Glasgow
Length: no boat
Join Date: Aug 2002
Posts: 37
I realise this is an old post....

Which props did you guys go with in the end then?...

I have an Etec 200 with a Viper 21, at WOT and fully trimmed up...the RPM can touch 6000, (the handbook states 5800 as max RPM).
Should i be looking to change up to a 22 or 23 pitch?...
__________________
Tarbh is offline   Reply With Quote
Old 18 June 2009, 04:56   #15
Member
 
Country: UK - England
Town: Mighty Penryn
Boat name: Little Joe.
Make: Avon Searider
Length: 4m +
Engine: Honda BF50
Join Date: Aug 2005
Posts: 8,841
Quote:
Originally Posted by Tarbh View Post
I realise this is an old post....

Which props did you guys go with in the end then?...

I have an Etec 200 with a Viper 21, at WOT and fully trimmed up...the RPM can touch 6000, (the handbook states 5800 as max RPM).
Should i be looking to change up to a 22 or 23 pitch?...
I went for the 23"P 4 blade. Awesome grip and pull out, losing a bit to top end though and only pulling 5100rpm.
__________________
Mollers is offline   Reply With Quote
Old 18 June 2009, 04:59   #16
Member
 
Country: UK - England
Town: Gloucestershire
Boat name: Osprey
Make: Osprey Vipermax
Length: 5m +
Engine: E-tec 300 G2
MMSI: TBC
Join Date: Dec 2006
Posts: 4,013
Quote:
Originally Posted by Tarbh View Post
I realise this is an old post....

Which props did you guys go with in the end then?...

I have an Etec 200 with a Viper 21, at WOT and fully trimmed up...the RPM can touch 6000, (the handbook states 5800 as max RPM).
Should i be looking to change up to a 22 or 23 pitch?...
Which 200 do you have? The big block or the small block ?
__________________
---------------------------------------------------
Chris Stevens

Born fiddler
Chris is offline   Reply With Quote
Old 18 June 2009, 05:02   #17
Member
 
Country: UK - Scotland
Town: Glasgow
Length: no boat
Join Date: Aug 2002
Posts: 37
It's a 2005 Big block...
__________________
Tarbh is offline   Reply With Quote
Old 18 June 2009, 05:19   #18
Member
 
Country: UK - England
Town: Gloucestershire
Boat name: Osprey
Make: Osprey Vipermax
Length: 5m +
Engine: E-tec 300 G2
MMSI: TBC
Join Date: Dec 2006
Posts: 4,013
Quote:
Originally Posted by Tarbh View Post
It's a 2005 Big block...
BRP quote the ideal RPMs for this engine are between 5500 and 5600 this should be your target RPM when trimmed out and a nornal load.

I would say you can try a 23 pitch Viper.

What speed are you currently seeing?
__________________
---------------------------------------------------
Chris Stevens

Born fiddler
Chris is offline   Reply With Quote
Old 18 June 2009, 05:33   #19
Member
 
Country: UK - Scotland
Town: Glasgow
Length: no boat
Join Date: Aug 2002
Posts: 37
Around about 45Kts...

2 People, 3/4 fuel...RIB is a 7m Humber Ocean Pro

From what i've read the 23" Viper is very hard to find?...
__________________
Tarbh is offline   Reply With Quote
Old 19 June 2009, 04:25   #20
Member
 
Country: UK - Scotland
Town: Glasgow
Length: no boat
Join Date: Aug 2002
Posts: 37
I've just checked and my prop is actually a 19 Viper!

Based on that, would a 21 Viper be my best option?...

If that is the case, has anyone got a 14 3/4 x 21 Viper prop they no longer use and would like to sell on?...
__________________

__________________
Tarbh is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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





Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 09:28.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.