1982 Merc outdrive seem to slip
 

While out today I tried to accelerate from a stop. When I got to 2000-2200
RPM the engine started revving higher and sounded as if something was
slipping and I had no more acceleration. Couldn't go fast enough to get on
plane even though engine revving about 3000 when slipping. Think prop OK as
only a couple of years old and have hit nothing but weeds with it. Any
ideas? This has happened before 2 years ago but when I got out of the
throttle and then pushed it agin it came right up.

Randy Ross wrote:
While out today I tried to accelerate from a stop. When I got to 2000-2200
RPM the engine started revving higher and sounded as if something was
slipping and I had no more acceleration. Couldn't go fast enough to get on
plane even though engine revving about 3000 when slipping. Think prop OK as
only a couple of years old and have hit nothing but weeds with it. Any
ideas? This has happened before 2 years ago but when I got out of the
throttle and then pushed it agin it came right up.



Your prop hub is slipping, most likely... if there is no other noise.
OR the drive coupler - when was it last changed/checked?

Rob

Randy,
Weeds could be your problem. Not much you can do about that except clean
them off your outdrive. Spun props or engine couplers give similar symptoms,
except those don't self heal for 2 years.
Jim

"Randy Ross" wrote in message
.. .
While out today I tried to accelerate from a stop. When I got to 2000-2200
RPM the engine started revving higher and sounded as if something was
slipping and I had no more acceleration. Couldn't go fast enough to get on
plane even though engine revving about 3000 when slipping. Think prop OK
as only a couple of years old and have hit nothing but weeds with it. Any
ideas? This has happened before 2 years ago but when I got out of the
throttle and then pushed it agin it came right up.

"Randy Ross" wrote
sounded as if something was slipping and I had no more acceleration.

If it was accompanied by a burning rubber smell, it's probably the drive
coupler. If not, probably the prop hub. Outdrives are one of the original
five simple machines, there's really nothing in there to slip, maybe a few
things to break, but that's another story.

On Mon, 08 Aug 2005 12:26:12 GMT, "JIMinFL"
wrote:

Randy,
Weeds could be your problem. Not much you can do about that except clean
them off your outdrive. Spun props or engine couplers give similar symptoms,
except those don't self heal for 2 years.
Jim


How would weeds cause that problem? (Not being a smartass...I really
just don't know)

Captain Chaos wrote:

On Mon, 08 Aug 2005 12:26:12 GMT, "JIMinFL"
wrote:


Randy,
Weeds could be your problem. Not much you can do about that except clean
them off your outdrive. Spun props or engine couplers give similar symptoms,
except those don't self heal for 2 years.
Jim



How would weeds cause that problem? (Not being a smartass...I really
just don't know)

If it's never happened to you, it's hard to explain. Engine rpm's ramp
up, but there is no forward progress because the weeds wrapped around
the prop ruin the foil. Usually, an application of reverse to clear the
weeds works.

Rob