Hurth transmission problems on Perkins M-30 diesels

A friend put in a new Perkins M-30 with Hurth trans 2 years ago (34 ft
sail) and has gone thru 4 Hurth transmissions in 700 engine hours.

The M-30 engine is marinized and sold by Volvo as the 2030 with the
same Hurth trans private labelled as Volvo's own.

The engine is a high speed, high compression (23 to 1) 3 cyl that is
subject to high torsional dynamics at lower RPMs and this creates big
problems - wears our the splines on the drive plate and then chews up
the clutches in the trans. One trans lasted only 50 hours from new.

Perkins used a spring drive plate when sold as the M-30 - Volvo
switched to a 2 part rubber drive plate and apparently increaded the
weight of the flywheel to reduce the torsional destruction - wonder
how they knew and Perkins didn't?

Anyway - the question - who knows about 2 or 3 cyl diesels with
lightweight flywheels that tear up the trans with torsional dynamic
activity?

Is this referring to s/v erinmore? th4 Nic 32?

--
Dennis Gibbons
S/V Dark Lady
CN35-207
email: dennis dash gibbons at worldnet dot att dot net
"OMOO" <omoo.TakeThisOut@fakeemail.com> wrote in message
news:esr6mvgd1la8k7v5v3nq9ppc158kvts9v5@4ax.com...
 > A friend put in a new Perkins M-30 with Hurth trans 2 years ago (34 ft
 > sail) and has gone thru 4 Hurth transmissions in 700 engine hours.
 >
 > The M-30 engine is marinized and sold by Volvo as the 2030 with the
 > same Hurth trans private labelled as Volvo's own.
 >
 > The engine is a high speed, high compression (23 to 1) 3 cyl that is
 > subject to high torsional dynamics at lower RPMs and this creates big
 > problems - wears our the splines on the drive plate and then chews up
 > the clutches in the trans. One trans lasted only 50 hours from new.
 >
 > Perkins used a spring drive plate when sold as the M-30 - Volvo
 > switched to a 2 part rubber drive plate and apparently increaded the
 > weight of the flywheel to reduce the torsional destruction - wonder
 > how they knew and Perkins didn't?
 >
 > Anyway - the question - who knows about 2 or 3 cyl diesels with
 > lightweight flywheels that tear up the trans with torsional dynamic
 > activity?
 ><!-- ~MESSAGE_AFTER~ -->