Help! Has my Yanmar transmission been destroyed?
 

Here is the whole embarrassing story. A friend was at the helm, we
were motoring down the channel at 2600 RPM. I have a 3 cylinder Yanmar
engine. I was dealing with the sheets. I asked my friend to slow down.
He got confused between the transmission and the throttle. Instead of
cutting back the throttle, he threw the transmission from forward to
reverse! There was a terrible noise as you can imagine. My friend
immediately realized that he had made a mistake and shifted to
neutral. After that, the engine and transmission seemed to behave
normally but now I am not as confident as I was. So what do you think?
Will I need a new transmission? And what about the folding prop? Any
advice would be greatly appreciated.
Thanks,
Ken

Help! Has my Yanmar transmission been destroyed?
 

Ken wrote:
Here is the whole embarrassing story. A friend was at the helm, we
were motoring down the channel at 2600 RPM. I have a 3 cylinder Yanmar
engine. I was dealing with the sheets. I asked my friend to slow down.
He got confused between the transmission and the throttle. Instead of
cutting back the throttle, he threw the transmission from forward to
reverse! There was a terrible noise as you can imagine. My friend
immediately realized that he had made a mistake and shifted to
neutral. After that, the engine and transmission seemed to behave
normally but now I am not as confident as I was. So what do you think?
Will I need a new transmission? And what about the folding prop? Any
advice would be greatly appreciated.
Thanks,
Ken
Well, I've done that more than once without trashing a tranny. Of
course, I suppose it depends on just how fast the shift actually was -
usually my "panics" are anticipated so it isn't quite as bad as it
might be.

As for the prop, I don't see how that would be hurt. If it was a
feathering prop, it would reverse rather quickly, but a folder doesn't
do anything.

Help! Has my Yanmar transmission been destroyed?
 

Ken,

Your tranny is probably OK. If it was me, I'd have a check of the thrust
bearing, Folding Prop Blades and Pins and watch the packing gland for
excessive leaky. You're probably OK. Those Little Univ are tough little
engines. It's the crap thats hooked to them that will give you the
problems

Happy Motoring; I HOPE!!


http://community.webtv.net/tassail/ThomPage

http://community.webtv.net/tassail/Pneuma

Help! Has my Yanmar transmission been destroyed?
 

Ken wrote:
Here is the whole embarrassing story. A friend was at the helm, we
were motoring down the channel at 2600 RPM. I have a 3 cylinder Yanmar
engine. I was dealing with the sheets. I asked my friend to slow down.
He got confused between the transmission and the throttle. Instead of
cutting back the throttle, he threw the transmission from forward to
reverse! There was a terrible noise as you can imagine. My friend
immediately realized that he had made a mistake and shifted to
neutral. After that, the engine and transmission seemed to behave
normally but now I am not as confident as I was. So what do you think?
Will I need a new transmission? And what about the folding prop? Any
advice would be greatly appreciated.
Thanks,
Ken

Should be OK, drain the fluid and look for metal in the fluid.

Good argument for a proper throttle.

Joe

Help! Has my Yanmar transmission been destroyed?
 

Ken wrote:
Here is the whole embarrassing story. A friend was at the helm, we
were motoring down the channel at 2600 RPM. I have a 3 cylinder Yanmar
engine. I was dealing with the sheets. I asked my friend to slow down.
He got confused between the transmission and the throttle. Instead of
cutting back the throttle, he threw the transmission from forward to
reverse! There was a terrible noise as you can imagine. My friend
immediately realized that he had made a mistake and shifted to
neutral. After that, the engine and transmission seemed to behave
normally but now I am not as confident as I was. So what do you think?

I think if there were a problem, there are a couple easy
ways to find out.


Will I need a new transmission? And what about the folding prop? Any
advice would be greatly appreciated.


Joe wrote:
Should be OK, drain the fluid and look for metal in the fluid.


Don't have to drain it, just pull out the dipstick and stick
a magnet down there. Or send a sample to an analysis shop (a
good idea in any event).

Good argument for a proper throttle.


What's "proper"?

2 other things come to mind... operating temp (I bet you
don't know what the operating temp was before) and the
linkage. At least the linkage can be carefully inspected &
replaced if need be.

Fresh Breezes- Doug King

Help! Has my Yanmar transmission been destroyed?
 

DSK wrote:

Good argument for a proper throttle.


What's "proper"?

http://users.sisqtel.net/jkriz/drawings/MT2.jpg

A Morse like I have on RedCloud is a proper throttle, you have to
throttle back to idle to shift.

Face it, having a seperate shift and throttle control sucks.

Morse also makes some very nice air controls.

Joe





2 other things come to mind... operating temp (I bet you
don't know what the operating temp was before) and the
linkage. At least the linkage can be carefully inspected &
replaced if need be.

Fresh Breezes- Doug King

Help! Has my Yanmar transmission been destroyed?
 

I'm surprised the prop didn't come thru the bottom of the boat.

Help! Has my Yanmar transmission been destroyed?
 

"Ken" wrote in message
...
Here is the whole embarrassing story. A friend was at the helm, we
were motoring down the channel at 2600 RPM. I have a 3 cylinder Yanmar
engine. I was dealing with the sheets. I asked my friend to slow down.
He got confused between the transmission and the throttle. Instead of
cutting back the throttle, he threw the transmission from forward to
reverse! There was a terrible noise as you can imagine. My friend
immediately realized that he had made a mistake and shifted to
neutral. After that, the engine and transmission seemed to behave
normally but now I am not as confident as I was. So what do you think?
Will I need a new transmission? And what about the folding prop? Any
advice would be greatly appreciated.
Thanks,
Ken

He probably slightly rounded a few gear teeth, but not much else. Might be
worthwhile to change the fluid and check for metal fragments or "filings."

Better yet, I think you should send that transmission to me for disposal.

Max

Help! Has my Yanmar transmission been destroyed?
 

"Joe" wrote in message
oups.com...

Face it, having a seperate shift and throttle control sucks.

The vast majority of boats have exactly that, however. Proper usage isn't
hard to learn, and making sure crew know how to use it is also imperative.

Max

Help! Has my Yanmar transmission been destroyed?
 

Check for metal filings in the transmission oil and do a gear vibration
analysis:

http://www.vibcons.com/vibration_data_collector.shtml

http://www.reliabilitydirect.com/vib...ts/vib_pen.htm

Here's some people that can do it for you:

http://www.thomasnet.com/products/vi...1870204-1.html

You can actually do the gear vibration analysis on the audio input port of
your pc.



"Ken" wrote in message
...
Here is the whole embarrassing story. A friend was at the helm, we
were motoring down the channel at 2600 RPM. I have a 3 cylinder Yanmar
engine. I was dealing with the sheets. I asked my friend to slow down.
He got confused between the transmission and the throttle. Instead of
cutting back the throttle, he threw the transmission from forward to
reverse! There was a terrible noise as you can imagine. My friend
immediately realized that he had made a mistake and shifted to
neutral. After that, the engine and transmission seemed to behave
normally but now I am not as confident as I was. So what do you think?
Will I need a new transmission? And what about the folding prop? Any
advice would be greatly appreciated.
Thanks,
Ken

Help! Has my Yanmar transmission been destroyed?
 

Relax, it's a sail boat

Seahag

"Ken" wrote in message
...
Here is the whole embarrassing story. A friend was at the
helm, we
were motoring down the channel at 2600 RPM. I have a 3
cylinder Yanmar
engine. I was dealing with the sheets. I asked my friend
to slow down.
He got confused between the transmission and the throttle.
Instead of
cutting back the throttle, he threw the transmission from
forward to
reverse! There was a terrible noise as you can imagine. My
friend
immediately realized that he had made a mistake and
shifted to
neutral. After that, the engine and transmission seemed to
behave
normally but now I am not as confident as I was. So what
do you think?
Will I need a new transmission? And what about the folding
prop? Any
advice would be greatly appreciated.
Thanks,
Ken

Help! Has my Yanmar transmission been destroyed?
 

"Seahag" wrote in message
...
Relax, it's a sail boat

Seahag

What fun are you?!



"Ken" wrote in message
...
Here is the whole embarrassing story. A friend was at the helm, we
were motoring down the channel at 2600 RPM. I have a 3 cylinder Yanmar
engine. I was dealing with the sheets. I asked my friend to slow down.
He got confused between the transmission and the throttle. Instead of
cutting back the throttle, he threw the transmission from forward to
reverse! There was a terrible noise as you can imagine. My friend
immediately realized that he had made a mistake and shifted to
neutral. After that, the engine and transmission seemed to behave
normally but now I am not as confident as I was. So what do you think?
Will I need a new transmission? And what about the folding prop? Any
advice would be greatly appreciated.
Thanks,
Ken

Help! Has my Yanmar transmission been destroyed?
 

(
"Bob Crantz" wrote:

"Seahag" wrote:
Relax, it's a sail boat

What fun are you?!


FUN??? You're gonna burn!

S



"Ken" wrote in message
...
Here is the whole embarrassing story. A friend was at
the helm, we
were motoring down the channel at 2600 RPM. I have a 3
cylinder Yanmar
engine. I was dealing with the sheets. I asked my friend
to slow down.
He got confused between the transmission and the
throttle. Instead of
cutting back the throttle, he threw the transmission
from forward to
reverse! There was a terrible noise as you can imagine.
My friend
immediately realized that he had made a mistake and
shifted to
neutral. After that, the engine and transmission seemed
to behave
normally but now I am not as confident as I was. So what
do you think?
Will I need a new transmission? And what about the
folding prop? Any
advice would be greatly appreciated.
Thanks,
Ken

Help! Has my Yanmar transmission been destroyed?
 

"Bob Crantz" wrote:

"Seahag" wrote in message
...
Relax, it's a sail boat

Seahag

What fun are you?!

I'm just shocked that you don't have an answer for you question.

LP ahem

Help! Has my Yanmar transmission been destroyed?
 

Read the instruction book for the gearbox. Most of them say you can do this
in an emergency but don't make a habit of it ...

"Ken" wrote in message
...
Here is the whole embarrassing story. A friend was at the helm, we
were motoring down the channel at 2600 RPM. I have a 3 cylinder Yanmar
engine. I was dealing with the sheets. I asked my friend to slow down.
He got confused between the transmission and the throttle. Instead of
cutting back the throttle, he threw the transmission from forward to
reverse! There was a terrible noise as you can imagine. My friend
immediately realized that he had made a mistake and shifted to
neutral. After that, the engine and transmission seemed to behave
normally but now I am not as confident as I was. So what do you think?
Will I need a new transmission? And what about the folding prop? Any
advice would be greatly appreciated.
Thanks,
Ken

Help! Has my Yanmar transmission been destroyed?
 

Maxprop wrote:
"Joe" wrote in message
oups.com...

Face it, having a seperate shift and throttle control sucks.

The vast majority of boats have exactly that, however. Proper usage isn't
hard to learn, and making sure crew know how to use it is also imperative.

Max

I agree Max lots of boats have dual controls...I hate them, they are as
you say, not hard to master, but as just about everyone here has said,
they have made the same mistake, usually when in a pinch or bind. The
reason most boats use dual controls is it's the cheap way to go. Dual
controls on a twin screw is an accident waiting to happen IMO.

Joe

Help! Has my Yanmar transmission been destroyed?
 

"Lady Pilot" wrote in message
news:vR3mg.22017$8q.10841@dukeread08...

"Bob Crantz" wrote:

"Seahag" wrote in message
...
Relax, it's a sail boat

Seahag

What fun are you?!

I'm just shocked that you don't have an answer for you question.

I reckon I'm not a sophist.

Help! Has my Yanmar transmission been destroyed?
 

"Maxprop" wrote

The vast majority of *SAIL* boats have exactly that,
however.


The key word being *sailboat*. That's what threw Joe off.

Scotty

Help! Has my Yanmar transmission been destroyed?
 

Scotty wrote:
"Maxprop" wrote

The vast majority of *SAIL* boats have exactly that,
however.


The key word being *sailboat*. That's what threw Joe off.

Scotty

Wrong Scotty,

I'ts just a cheap set-up. On any boat.

True.... I like a fine throttle, not 1906 technology....sheeeze if
you"re going that route, why not just bolt two sticks with strings to
your helm to control your main engine?

I wish I had a power boat throttle on RedCloud. That would be a roller
bearing.. air controlled throttle from Morse. Smooooooooth as glass,
deck to deck power range, with idle indicators, and a really cool
Caaaaaaaaa Chhhhhhhhhhhhhhhhhhh sound when dropped out of gear, sortta
like air brakes on your Rig.

Joe

Help! Has my Yanmar transmission been destroyed?
 

"Joe" wrote in message
oups.com..
..

True.... I like a fine throttle, not 1906
technology....sheeeze if
you"re going that route, why not just bolt two sticks with
strings to
your helm to control your main engine?


Sticks? I just have strings and turning blocks.



I wish I had a power boat throttle on RedCloud. That
would be a roller
bearing.. air controlled throttle from Morse. Smooooooooth
as glass,
deck to deck power range, with idle indicators, and a
really cool
Caaaaaaaaa Chhhhhhhhhhhhhhhhhhh sound when dropped out of
gear, sortta
like air brakes on your Rig.


I'll keep that in mind if I ever buy a motorboat.... KNOT !


Scotty

Help! Has my Yanmar transmission been destroyed?
 

0
"Joe" wrote in message
oups.com..
..

Scotty wrote:

I'll keep that in mind if I ever buy a motorboat....
KNOT !



I'd only have one type of Motorboat:
http://haig-brown.com/hottips/images/106a.jpg

You are looking at one serious money maker!..Earns 4,500
a day profit.
And works every day of the year!


and costs how much?

Help! Has my Yanmar transmission been destroyed?
 

OzOne wrote in message


Damn, I haven't seen that in print since Jax struttin around here in
his undies.


I'm completely nude!

Glory!