[AlbinVega] MD6 Help - Quickly

A

albinvega3283

.
Oct 30, 2019
234
Hi, All:

I've sold VESPER; V 1868. The fellow (Patrick) who bought her is preparing
for a very involved cruise.

He launched her today, Wednesday, 6 April. As she was lowered into the
water, the marina owner said he could start the engine. Then, when the marina owner
asked if the engine was in neutral, to which Patrick answered: "Yes!" You can
guess what happened next: As the strap holding Vesper were being moved aft,
it was caught in the "always-spinning" combo prop. It tore up the strap, but
more importantly, the engine stopped. Have not been able to restart it.

Please, does anybody have any real good ideas where the problem might be
that is keeping the engine from starting? The shaft appears OK, and it does spin
OK.

Your quick responses would be most appreciated. I am trying to help Patrick.

Most sincerely,

Ed Davis, aka saylered@...[Non-text portions of this message have been removed]
 
J

jvancraaikamp

.
Feb 18, 2011
38
Hello Ed

It sounds like a problem with the fuel supply.
You have to check if you release one fuel pipe going to the injectors if
your pump does supply diesel.
I had a problem with a MD5A a couple of years ago that my RPM regulator got
stuck just after launching.
It resulted in the fact that the regulator overruled the normal fuel lever
and blocked the fuel supply to the injectors.
Normally the task of this regulator is preventing your engine rpm's when
your proppellor gets out of the water.
I had the problem that the lever from the regulator was corroded after the
motor had not been running for 2 years.
So first check if your supply fuel to your injectors.

Regards Jan van Craaikamp.
========================================
Message date : 07-04-2005 03:00
From : SaylerEd@...
To : AlbinVega@yahoogroups.com
Copy to :
Subject : [AlbinVega] MD6 Help - Quickly

Hi, All:

I've sold VESPER; V 1868. The fellow (Patrick) who bought her is preparing
for a very involved cruise.

He launched her today, Wednesday, 6 April. As she was lowered into the
water, the marina owner said he could start the engine. Then, when the marina owner
asked if the engine was in neutral, to which Patrick answered: "Yes!" You can
guess what happened next: As the strap holding Vesper were being moved aft,
it was caught in the "always-spinning" combo prop. It tore up the strap, but
more importantly, the engine stopped. Have not been able to restart it.

Please, does anybody have any real good ideas where the problem might be
that is keeping the engine from starting? The shaft appears OK, and it does spin
OK.

Your quick responses would be most appreciated. I am trying to help Patrick.

Most sincerely,

Ed Davis, aka saylered@...


Yahoo! Groups Links
 
V

vega1860

.
Apr 28, 2000
691
When I can't start mine it's usually because I have forgotten to release the
"engine stopper" (dunno what the correct technical term is). It's on the
fuel pump, connected with a cable to a handle in the cockpit.

When this is the case, there is no fuel injection - you can usually hear the
fuel injection when you crank the engine manually, but now you hear nothing.Returning from my quest to get fuel I usually remember the "engine stopper"
though.

Perhaps this is Patrick's problem?
 
R

ronbodkin

.
Oct 30, 2019
77
I repowered last summer and did the work myself. In the process I
learned some things about both the Old MD6A and the new Beta.

On the MD6a with the Combi, where the shaft goes inside the combi
unit there is a small slot and what is called a woodruff key (little
half moon pice of metal that slides into the slot) The half moon
shape is slightly bigger than the slot it slides into on the shaft
and the additional material slides into a slot in the combi unit and
that is what makes the shaft spin with the transmission.

I'm wondering if the sudden fowling of the prop against the
continued tork of the engine may have fowled the gears in the combi,
and also sheared off the woodruff key. The foweled gears may be
keeping the output shaft on the engine from turning, and the sheared
woodruff key is allowing the shaft to turn.

I think I'd start by trying to tear down the combi unit and pulling
the drive shaft. That will be easier and cheaper than digging into
the engine itself. If you find all is well there it may be a good
time to get a new combi re-build kit from steve birch before you put
it back together (its cheap) Steve Birch has great instructions and
is not nearly as bad as it sounds. I'm a novice and that part of my
install was a piece of cake. If you dig into it and find the combi
was fowled up, I still have all of those parts from my old system
and I had just done the combi rebuild before My engine gave up the
ghost, so the rebuild kit and shaft are brand new. I'd pass them
along quite cheaply!

Those are my 2 cents.

(also if you search back through the old posts here, I seem to
recall similar events happening to others and there may be some good
advice to be found.

Good luck!
 
R

ronbodkin

.
Oct 30, 2019
77
One more thing I just remembered...When you say "...the shaft looked
ok and still spins"...Unless you have disassembled the combi, what
you are looking at is the control tube. The shaft itself is inside
of the control tube and cannot be seen at all when all is assembled.

At the very least, get your hands on a blow up of the parts for the
combi unit. It will help you (or the new owner) trouble shoot.
 
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