According to Ray Electric (one of the oldest makers of electric outboards) 1 hp = approx 49-54 lbs of thrust.
This would make the Cruise 4.0 a 4hp motor and the Cruise 2.0 a 2hp motor.
Of course these are max HP numbers and an electric motor of the same max HP will out accelerate a gas motor, due to more low end torque. It will feel like you have more power because it has more thrust out of the gate, but an electric motor with a max of 4hp (assuming same gearing and prop) will not ultimately push a boat any faster than a gas 4hp engine.
--- In electricboats@yahoogroups.com, "Eric" <ewdysar@...> wrote:
>
> Ed and Richard,
>
> Good info, thanks.
>
> According to Torqeedo, the Travel 401/503 only put out 40# of thrust (comparable to a 1.5hp gas outboard), so is probably not appropriate for a boat your size. The Travel 801/1003 produce 68# of thrust (like a 3hp outboard) and could provide that extra "oomph" for your boat. The larger Cruise 2.0 produce 110-121# of thrust (equal to 5hp), depending on the model and the Cruise 4.0 makes 214# of thrust (like an 8hp).
>
> These conversion numbers sound right to me. On my inflatable dinghy, my Travel 801 feels stronger than the 2hp Tohatsu that it replaced, but not as strong as a 4hp gas motor that I borrowed before I bought the Torqeedo. My comparisons are purely subjective, I collected no controlled metrics with each configuration. But it does add some credibility to Torqeedo's claims.
>
> Fair winds,
> Eric
> Marina del Rey, CA
>
>
> --- In electricboats@yahoogroups.com, "etarm1" <ed.armstrong@> wrote:
> >
> > I also have a Cape Dory Typhoon. I use a Minn Kota 55# thrust trolling motor with a GP27 battery, and I sail on an inland lake. It gets me in and out of the marina. I haven't run it over 30 minutes, so I don't know my maximum range. It moves the boat at around 2.5 mph, so is fairly slow, but I'm not usually in much of a hurry when I'm sailing. I wouldn't want to have to motor against much wind or tide. If I did it again, I'd probably go with the 74# thrust, 24V motor.
> >
> > Ed
> >
> > --- In electricboats@yahoogroups.com, Ned Farinholt <nedfarinholt@> wrote:
> > >
> > > Richard,
> > > I have a Cape Dory Typhoon keel sailboat, 2400#, 14' waterline and use a Torqeedo Base 801L 24/30v motor with two grp 31 agm 100 Ah batteries. It will do just what you would expect 3 hrs at full throttle. Gets me back from the middle of the Chesapeake when the wind dies. It will push the boat at about 3.5 knots. They also make a 401, 400w 12v, that would probably be enough for your boat. My 801 is very quiet compared to an ICE but it is not silent. I have heard on this post that Torqeedo has improved the gearing to make it quieter, at least on the new models. Their new catalog does not list the "base" models, i.e. without the lithium batteries but you might give them a call or email. They have been very helpful to me in the past. The only downside on the Torqeedo is the price. Minn-kotas are about 1/3 the price, but I have no experience with them.
> > > Ned
> > >
>
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