CD33-put trans. in fwd. or reverse under sail?
Moderator: Jim Walsh
CD33-put trans. in fwd. or reverse under sail?
on a CD33 w/a Volvo Penta, should the transmission be engaged in forward or reverse when under sail? we used to put it in forward, but believe I've read on the Site to do otherwise. As the transmission was recently redone, I'd like to get this right for certain.
Many thanks for any help,
Brian W.
Many thanks for any help,
Brian W.
Re: CD33-put trans. in fwd. or reverse under sail?
Reverse. The idea is to stop the prop from turning the shaft thus causing friction and heat in the transmission when it is not being lubricated. In neutral and possibly forward the prop turns but in reverse there is resistance to rotation. This slows you down a little bit, but balance speed vs the cost of a transmission and make your choice. The CD manual also suggests reverse.
Bill
wesham0@pop.uky.edu
Bill
wesham0@pop.uky.edu
Re: CD33-put trans. in fwd. or reverse under sail?
Brian - I had to replace my Hurth transmission about two years ago. The new unit had a large red tag on the linkage connection which advised to keep the transmission in either neutral or reverse while sailing - NEVER IN FORWARD. I can not provide any reason as to why it said not to leave in forward, but I have followed the recommendation.
In neutral the resistance is reduced but the transmission wear and bearing wear is increased.
In neutral the resistance is reduced but the transmission wear and bearing wear is increased.
Brian W. wrote: on a CD33 w/a Volvo Penta, should the transmission be engaged in forward or reverse when under sail? we used to put it in forward, but believe I've read on the Site to do otherwise. As the transmission was recently redone, I'd like to get this right for certain.
Many thanks for any help,
Brian W.
REVERSE!!!
Most transmissions will suffer from the rotation that will result from being in forward while the boat is moving without engine power. Neutral is OK, but the noise may drive you crazy. Transmissions are costly to repair.
Mitchell Bober
RESPITE
CD330
Mitchell Bober
RESPITE
CD330
Re: CD33-put trans. in fwd. or reverse under sail?
Eastern Marine in Toronto, a Volvo Penta dealer specializing in MD's says to leave the trans in neutral.
sea u,
mike
LaVida
CD33
mpr@seascan.com
sea u,
mike
LaVida
CD33
mpr@seascan.com
Re: CD33-put trans. in fwd. or reverse under sail?
I have tried it all ways. In neutral the shaft spins which heats up
the gearbox to an alarming degree, and I would have serious doubts
about the lubrication being delivered to the transmission.
In forward, the shaft turns the gears in the box, with the same
concerns.
In reverse, the transmission is secured but becomes locked after a
period of time and it is sometimes necessary to start the engine in
gear to free it up. This is not a problem and it stays in reverse
when we are sailing.
I wonder if it wouldnt be a good idea to fit a shaft lock of some sort
to enable the motor to be left in neutral, but one would need to be
diligent about releasing it before getting underway.
Murray Glue
Dayspring CD30
Nelson
New Zealand
106452.2173@compuserve.com
the gearbox to an alarming degree, and I would have serious doubts
about the lubrication being delivered to the transmission.
In forward, the shaft turns the gears in the box, with the same
concerns.
In reverse, the transmission is secured but becomes locked after a
period of time and it is sometimes necessary to start the engine in
gear to free it up. This is not a problem and it stays in reverse
when we are sailing.
I wonder if it wouldnt be a good idea to fit a shaft lock of some sort
to enable the motor to be left in neutral, but one would need to be
diligent about releasing it before getting underway.
Murray Glue
Dayspring CD30
Nelson
New Zealand
106452.2173@compuserve.com
Re: CD33-put trans. in fwd. or reverse under sail?
I previously owned a CD but now a Tartan 34. This issue became a hotly debated one on the Tartan network list, with everybody giving opinions, opinions plus ideas, opinions plus quotes. I wrote to Hurth (now based in Italy) and posed these questions:
(1) which position (F-N-R) while under sail with engine off? The answer from Hurth: REVERSE
(2) How to shift when done sailing, and ready to start engine? The answer from Hurth: Never start in Reverse. Shift from R to Neutral before cranking.
My experience is that when trying to shiftfrom Reverse to Neutral (when still making way before cranking up) there is a lot of pressure on the shift lever due to the R-torque on the prop. My solution is simply to luff up until I kill most or all way and then the shift easily moves from R to N to start engine.
georgemary2@cconnect.net
(1) which position (F-N-R) while under sail with engine off? The answer from Hurth: REVERSE
(2) How to shift when done sailing, and ready to start engine? The answer from Hurth: Never start in Reverse. Shift from R to Neutral before cranking.
My experience is that when trying to shiftfrom Reverse to Neutral (when still making way before cranking up) there is a lot of pressure on the shift lever due to the R-torque on the prop. My solution is simply to luff up until I kill most or all way and then the shift easily moves from R to N to start engine.
georgemary2@cconnect.net