Thread Tools Display Modes
Old 05-12-2014, 04:17 PM   #1
Registered User
Country: UK
Location: Cornwall
Occupation: Chimney sweep!
Interests: Boats n Cars
Boat name: Jaykay
Boat make: Triana Tropica
Engines: 2 x GM 5.7 V8
Cruising area: Falmouth

Join Date: May 2014
Location: Cornwall
Posts: 16
Question Volvo DP290 prop sizing-what to increase to?

So finally I have stripped off the many layers of paint and have found the all important numbers on my props - B5 !

Following successful sea trials in the Summer after a complete refit, once the engines were run in, I have found that I am achieving max rpm (4,600rpm) at about 3/4 throttle. I think this is just before the second choke opens. Fantastic initial acceleration and also achieving excellent midrange acceleration. At 4,500 rpm I had 45mph on the speedo and 38knots on the GPS. No problems with the engines at all across the rev range.

Full details are:

2 x brand new 5.7ltr GM V8 315hp per engine - 630hp total
2 x re-furbished DP 290 drives running B5 props
Vessel - Triana Tropica 25ft
Approx weight 4 tons - this is a calculated approximation
Max rpm at WOT 4300 - 4600

There is video on my Youtube account at

Can anyone advise on what props I should be changing to? And is anyone looking for some undamaged B5 props when I carry out the change?

Any help greatly appreciated
Jaykay is offline   Reply With Quote

Thread Tools
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

Powered by vBadvanced CMPS v3.2.3

All times are GMT +1. The time now is 07:16 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.