T-Pain Is On A Boat: Re: [Electric Boats] Torqeedo Cruise 2.0 vs 4.0 questions

Sunday, July 26, 2009

Re: [Electric Boats] Torqeedo Cruise 2.0 vs 4.0 questions

You might be able to adapt a bicycle computer to measure rpm.

To add to what Todd said, you could think of the two motors like small and large gas engines. Both max out at 6000 rpm. The small one could hit 6000 rpm on a small light boat. The big one (with the same prop) would push the same boat the same speed. Try the two motors on a big boat and the small one would no longer be able to hit 6,000 rpm but the big one still could, meaning it could push the big boat faster.

This has nothing to do with prop slippage.

Denny

----- Original Message -----
From: ravlegend
To: electricboats@yahoogroups.com
Sent: Sunday, July 26, 2009 10:37 AM
Subject: Re: [Electric Boats] Torqeedo Cruise 2.0 vs 4.0 questions

--- In electricboats@yahoogroups.com, "dennis wolfe" <dwolfe@...> wrote:
>
> I imagine the 1250 rpm is at no load and limited by the controller. The 48v model would turn the prop a lot faster under load on an actual boat in the water.
>
> Dennis-

Is that the same as having the 4.0 having a better torque? or less slippage?

BTW, for gas engines, there's tachometer to measure rpm. What about for electric motors?

[Non-text portions of this message have been removed]