» » » » All About Marine Transmission V-Drives

All About Marine Transmission V-Drives

NS_V-Drive_300Like many vessel owners, you are not alone if you’re wary when the “V-word” is mentioned. This goes way back, because using a “V-drive” requires a lot more design and installation thought. The general configuration is not forgiving unless done right, but absolutely if done right, the V-Drive layout can offer good reliability compared to any in-line drive, along with offering many more advantages in some installations.

What most people fail to understand is that with any install, inline or V-drive, the shaft / gear box arrangement and it’s general location does not change, it is the engine that swaps position that makes the biggest difference in the design layout while also giving the this configuration its name “V-DRIVE”.

THE BASIC LAYOUT OF THE ENGINE IN RELATION TO THE TRANSMISSION IS EXPLAINED BELOW:

1) – Engine coupled to the transmission towards bow of boat – closed coupled in-line drive, down angle, drop parallel, or co-axial.
2) – Engine coupled to the tranny towards rear of boat (Closed Coupled V- Drive) – engine weight, not transmission weight, shifted aft approx 3-4 ft in smaller engine installs compared to the same boat with an in-line.
3) – Engine removed from the transmission and moved towards rear of boat (Remote V- Drive) – engine weight, not transmission weight, shifted aft approx 4 ft-8 ft in smaller engine installs compared to the same boat w/ an in-line. This usually allows the best access to both components.

 

Remember that in all cases regardless of which drive-line layout one uses, the shaft/struts/log and rudder components, are generally all the same.

Seaboard Marine is one of the largest installer and supplier of V-Drive diesel powered commercial boats in this country. We consult on a regular basis w/ many small builders of custom boats and have done over 60 V-drive installs for both commercial and recreational vessels ourselves – Lots of experience, and I would say without any hesitation, the nicest and fastest boats we have repowered, designed, or built from scratch, are V-Drive powered. Many of our customers come to us specifically because of our vast experience w/ this type of engine/transmission configuration.

Anyway, look over these pics to get some ideas and a better understanding of the “overall” relationships. Send me some pics of your boat, goals you want to meet, and I’ll forward you some more info specific to what your needs.

ENGINE-TRANSMISSION-PROPELLER SHAFT DRIVE TYPES

 

v-drive-types

down-angle-vs-vdrive

 

BELOW YOU CAN SEE PHOTOS OF SOME OF OUR INSTALLATIONS

vDRIVE15 vDRIVE16 vDRIVE17 vDRIVE18 vDRIVE19 vDRIVE21 vDRIVE22 vDRIVE23 vDRIVE24 vDRIVE25 vDRIVE26 vDRIVE27 vDRIVE28 vDRIVE29 vDRIVE30 vDRIVE31 vDRIVE32 vDRIVE33 vDRIVE34 vDRIVE35 vDRIVE36 vDRIVE37 vDRIVE38 vDRIVE39 vDRIVE40 vDRIVE41 vDRIVE42 vDRIVE43 vDRIVE44 OBS at Speed

OLYMPUS DIGITAL CAMERA
OLYMPUS DIGITAL CAMERA

OUTER BANKS--Remote V-Drives1 OUTER BANKS--Remote V-Drives2 OUTER BANKS--Remote V-Drives3 Remote 325IV Remote 325IV-2 Sunstar Remote ZF325IV1 Sunstar Remote ZF325IV2 Sunstar Remote ZF325IV3 Sunstar Remote ZF325IV4 vDRIVE1 vDRIVE2 vDRIVE3 vDRIVE4 vDRIVE5 vDRIVE6 vDRIVE7 vDRIVE8 vDRIVE9 vDRIVE10 vDRIVE11 vDRIVE12 vDRIVE13 vDRIVE14