I posted this to a number of groups as I'm sure it's of interest to all.

I'm looking to purchase a CV coupling to go between the engine and the prop
shaft.

The two contenders seem to be either an Aquadrive or a PythonDrive. The
PythonDrive is cheaper. Has anyone any experience with the PythonDrive.

Will it handle movement from a soft mounted engine in up/ down, side/ side
and fore/ aft directions.

My engine is currently coupled to the prop shaft with a R&D flexible shaft
coupling, this is basically a plastic plate that can flex slightly. Although
the setup works, it's a bit primitive. At certain throttle settings the
engine bounces about a bit and vibrations can be felt.

Any info will be appreciated.

Adrian Smith

Adrian Smith wrote:
I posted this to a number of groups as I'm sure it's of interest to all.

I'm looking to purchase a CV coupling to go between the engine and
the prop
shaft.

The two contenders seem to be either an Aquadrive or a PythonDrive.
snip

Been there, done that.

The AquaDrive works.

Lew

"Lew Hodgett" wrote in message
ink.net...
Adrian Smith wrote:
I posted this to a number of groups as I'm sure it's of interest to all.

I'm looking to purchase a CV coupling to go between the engine and
the prop
shaft.

The two contenders seem to be either an Aquadrive or a PythonDrive.
snip

Been there, done that.

The AquaDrive works.

Lew

Why did you choose the Aquadrive over the cheaper PythonDrive?

Did you notice a big before/ after difference in both noise and vibration?

Adrian Smith

Adrian Smith wrote:

Why did you choose the Aquadrive over the cheaper PythonDrive?

Did you notice a big before/ after difference in both noise and
vibration?

At the time AquaDrive was the only product available.

There was a MAJOR reduction in both sound and vibration levels, at least
20dB each, and quit snapping mounting bolts like they were pretzels.

Unless Python is at least 40% lower in cost, my choice is AquaDrive.

Even then, doubt I'd by it.

Lew

"Lew Hodgett" wrote in message
link.net...
Adrian Smith wrote:

Why did you choose the Aquadrive over the cheaper PythonDrive?

Did you notice a big before/ after difference in both noise and
vibration?

At the time AquaDrive was the only product available.

There was a MAJOR reduction in both sound and vibration levels, at least
20dB each, and quit snapping mounting bolts like they were pretzels.

Unless Python is at least 40% lower in cost, my choice is AquaDrive.

Even then, doubt I'd by it.

Lew

Is that because you have heard bad things about the PythonDrive? or that the
AquaDrive is somehow superior?

Adrian Smith

I fitted a Centaflex AGM coupling - 2 rubber couplings and a 2.4mtr 5
inch diameter hollow shaft in between and it was considerably cheaper
than Aquadrive - but not sure about Python drive. Are not Aqua and
Python the same thing but Python is the US version??

Adrian Smith wrote:

Is that because you have heard bad things about the PythonDrive? or
that the
AquaDrive is somehow superior?


I know the AquaDrive works.

I have no interest in trying to reinvent the wheel, especially for a one
time purchase.

Lew

Adrian Smith wrote:

Why did you choose the Aquadrive over the cheaper PythonDrive?

Did you notice a big before/ after difference in both noise and
vibration?

Just noticed that you are probably in UK which may impact pricing.

Here in US, a complete AquaDrive package, including engine mounts and
adapters is probably less than $1,500 USD for most sail boat engines.

Lew

"Lew Hodgett" wrote in message
link.net...
Adrian Smith wrote:

Why did you choose the Aquadrive over the cheaper PythonDrive?

Did you notice a big before/ after difference in both noise and
vibration?

Just noticed that you are probably in UK which may impact pricing.

Here in US, a complete AquaDrive package, including engine mounts and
adapters is probably less than $1,500 USD for most sail boat engines.

Lew


Don't suppose you can remember what model/size AquaDrive you have?

PythonDrive for my engine (2.25litre 48BHP@2800) is approx 600USD (converted
from GBP) Probably get one cheaper over there. For complete unit/ adapters
but not engine mounts.

From what I can see in the specs there is not much difference between an
AquaDrive and a PythonDrive.

Adrian Smith

"Adrian Smith" wrote in message
news
"Lew Hodgett" wrote in message
link.net...
Adrian Smith wrote:

Why did you choose the Aquadrive over the cheaper PythonDrive?

Did you notice a big before/ after difference in both noise and
vibration?

Just noticed that you are probably in UK which may impact pricing.

Here in US, a complete AquaDrive package, including engine mounts
and
adapters is probably less than $1,500 USD for most sail boat
engines.

Lew


Don't suppose you can remember what model/size AquaDrive you have?

PythonDrive for my engine (2.25litre 48BHP@2800) is approx 600USD
(converted
from GBP) Probably get one cheaper over there. For complete unit/
adapters
but not engine mounts.

From what I can see in the specs there is not much difference
between an
AquaDrive and a PythonDrive.

Adrian Smith

Adrian
Everybody has been giving their own personal recommendations before
you said what engine you have in your boat and what sort of boat it
is.
Also, do you really want to mount the engine on flexible mounts rather
than solid mountings?
From your latest post, am I correct in assuming that you have a 4 cyl
diesel? Japanese based unit or BMC etc?

Are you more concerned about alignment problems or
vibration/noise transmission?

Phil