Volvo Penta MD7 A Prop Rotation?

[rodd234]

Hi everyone,
I have just fitted a Md7a Volvo Penta engine to my Yacht Starts and works fine !!! But have not got the controls yet!!
While operating the gear change by hand (Just to make sure everything operates ) It suddenly dawned on me that I do not know which is forward or Reverse gears as they are not marked on the Gearbox.......... So I do not know if the Prop should be Right or left handed ?
I can see that the Flywheel spins clockwise as you look at it, so which way should the shaft spin in forward gear while looking down the length of the boat?????

ANY HELP APPRECIATED !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

 

[Kylora]

Have a look at Bluemoments Download Page for a manual. Had a quick look - couldn't see a reference to gearbox rotation.

Edited : Will bow to Steve B's superier knowledge.

Ash

 

[stevebirch2002]

Volvo use Left-Hand props so if you look from the rear of teh boat then the prop will rotate anti-clockwise

Hope all goes well on the install Ash... Let me know how it goes.

Steve B

 

[Kylora]

[ QUOTE ]
Hope all goes well on the install Ash... Let me know how it goes.

Steve B

[/ QUOTE ]

Getting there - Paid work interrupted fun work for three days last week, and again today.

6A is on the ground ( came out of hatch OK complete with combi, and stubs of shaft and exhaust still attached). Bearers fitted, marked, drilled and tapped. Fuel lines ( supply, spill, and vent) replaced. Wiring tidied up. Fitting insulation tomorrow - still plenty to do. Been taking plenty of pics. Will do a write up, have some thoughts which I will pass on for consideration.

Ash

 

[DavidGrieves]

Hi

I had an MD7a in last boat, not sure if I can answer your question but it kicked to starboard when going astern. Also when it was in reverse the gear box made more of a whine type noise, my MD11c makes same noise. Does that help?

 

[Mudhook]

My MD7A very definitely turns the prop right handed, i.e clockwise as you look from the stern. Stern kicks to port in reverse.

Regards, Mudhook

 

[tjbrace]

My previous boat had the MD7A. I do not know the prop rotation direction but in reverse the stern kicked to startboard.

 

[thalassa]

Mine had a MD7A with MSB gearbox, kicked to starboard in reverse, and was definitely a left-handed prop.
If looking forward to the boat, the shaft turns anticlockwise.

 

[jonayuen]

Hello,

Mine (with an MSB gearbox) has a left handed prop and kicks to starboard in reverse.

Jonathan

 

[Kylora]

Hey Mudhook

You appear to be in a minority of one. Maybe time you checked the gearbox reduction in both your forward and reverse.

Do you have a whine in forward by any chance. See David Grieves post.

Ash