Torque is increased when reduction gearing is used. The amount of reduction increases torque. boat drives rely more on torque than HP as do most drives. The advantage of reduction drives is the lower load on the motor that the motor will try to provide thus increasing the temperature of the motor to the point of burning up the windings. Much of the motor design relies on cooling the motor for the desired rating.
You can get more power out of a motor if you can cool the motor enough. External fans help with this, because the fan no longer relies on the motor speed.
Hope this helps.
Kevin Pemberton
On 08/02/2010 09:51 AM, Daniel Michaels wrote:
Thanks I have been doing more research and found EMC-RT Motor which seems like it is going to do the trick. I am trying to find out now if I still have to use a gear reduction with this motor.
Dan
--- On Mon, 8/2/10, Ron <rlgravel@swbell.net> wrote:
From: Ron <rlgravel@swbell.net>
Subject: [Electric Boats] Re: Hello
To: electricboats@yahoogroups. com
Date: Monday, August 2, 2010, 11:46 AM
HP will not increase, a gear reduction drops the output speed and increases the twist force on a slower turning application.
--- In electricboats@yahoogroups. , "Daniel" <nov32394@...> wrote:com
>
> Hello I just joined. I own a Pearson Triton 28' sailboat that I plan on using electric power for. I have a small amount of information but I always like more. One of the biggest questions I need answered is the speed of the motor. Lets start out with a golf cart type motor. Does it have the same power at 800 rpm as it does at 1,600 rpm? Do you want to use a reduction drive on an electric motor if you are going to run it at a slower speed?
>
> Does an Electric motor work the same as an ICE as far as gearing it down? With an airplane you get more hp the faster the engine goes so putting a reduction gear on gives you more hp.
>
> Dan
>
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