RICE MARINE, INC.
YOUR MARINE TRANSMISSION SOURCE
Determining models
| RICE MARINE, INC. 2221 Magnolia Drive DeLand, Florida, 32724 386-717-5225 Service@boatgears.net |
HOW TO DETERMINE YOUR TRANSMISSION
MAKE, MODEL AND GEAR RATIO
So you have an inboard boat and don't have a clue as to what make or model transmission it's equipped with
or you think you know but aren't sure. This section can help. First, a few odd facts that you need to know:
1. In the 1990's Borg-Warner sold their marine transmission division to Regal-Beloit Corperation. They still
make most of the same marine transmissions. They retained the name Velvet Drive which B-W had started
to call their transmissions. So when we talk about a Velvet Drive 71C or 1005 transmission it is the same
as the Borg-Warner 71C or 1005. Velvet Drive are now the only marine transmissions made in the USA.
Go to Velvet Drive models
If you already know the model number but not the gear ratio then go to Velvet Drive ratios
2. Hurth Transmissions, which were made in Italy, was purchased by ZF Friedrichshafen AG of Germany.
Some Hurth models are no longer made and Hurth model numbers have been converted to AF numbers. Some examples of this are:
Hurth number ZF number
HBW-50 ZF-5M (now replaced by ZF-6M)
HBW-100 ZF-10M (now replaced by the ZF-12M)
HBW-150 ZF-15M
HBW-15OA ZF-15MA
HBW-150V ZF-15IV
HSW-250 ZF-25
HSW-450 ZF-45
HSW-630A ZF-63A
HSW-800A ZF-80A (now replaced by the ZF-85A)
Go to ZF models
3. Paragon transmissions are no longer manfactured however most part are still being made and almost
all models can be rebuilt. The water-cooled jacket type v-drive case is very scarce and generally not
available. Go to Paragon models
4. Go to Walter V-Drive models
or you think you know but aren't sure. This section can help. First, a few odd facts that you need to know:
1. In the 1990's Borg-Warner sold their marine transmission division to Regal-Beloit Corperation. They still
make most of the same marine transmissions. They retained the name Velvet Drive which B-W had started
to call their transmissions. So when we talk about a Velvet Drive 71C or 1005 transmission it is the same
as the Borg-Warner 71C or 1005. Velvet Drive are now the only marine transmissions made in the USA.
Go to Velvet Drive models
If you already know the model number but not the gear ratio then go to Velvet Drive ratios
2. Hurth Transmissions, which were made in Italy, was purchased by ZF Friedrichshafen AG of Germany.
Some Hurth models are no longer made and Hurth model numbers have been converted to AF numbers. Some examples of this are:
Hurth number ZF number
HBW-50 ZF-5M (now replaced by ZF-6M)
HBW-100 ZF-10M (now replaced by the ZF-12M)
HBW-150 ZF-15M
HBW-15OA ZF-15MA
HBW-150V ZF-15IV
HSW-250 ZF-25
HSW-450 ZF-45
HSW-630A ZF-63A
HSW-800A ZF-80A (now replaced by the ZF-85A)
Go to ZF models
3. Paragon transmissions are no longer manfactured however most part are still being made and almost
all models can be rebuilt. The water-cooled jacket type v-drive case is very scarce and generally not
available. Go to Paragon models
4. Go to Walter V-Drive models
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