Actually no running an electric engine below its rated speed(you should read it as most efficient speed) causes the motor to run hot which will lead to it actually using more amps per feet traveled. It needs the added RPMs to make sure the fans move enough air thru it to prevent it from overheating. If you want a direct drive it needs to be wound for the correct RPMs you want to turn the propeller 90% of the time. Not top end or bottom end but main average. Also you have to consider most electric motors do not have bearings capable of axial loading, so running it direct drive will kill the bearings and then the motor very quickly.
Sent from my Huawei Mobile
-------- Original Message --------
Subject: Re: [Electric Boats] Re: Albin Vega direct drive?
From: "Bill Farina bfarina@venture-1.com [electricboats]"
To: electricboats@yahoogroups.com
CC:
Another thing that would seem to be problematic with using a reduction gear would be that higher RPM would mean greater power consumption for distance covered. Is this true?
On 6/15/2019 8:06 AM, Kevin Pemberton pembertonkevin@gmail.com [electricboats] wrote:
Can anyone confirm this is accurate and does anyone here use their motor without the gear reduction and simply avoid pushing the motor higher than the 2500 rpm the prop works best at?
.
Posted by: Matt Thompson <mattkaine@hotmail.com>
| Reply via web post | • | Reply to sender | • | Reply to group | • | Start a New Topic | • | Messages in this topic (10) |
No comments:
Post a Comment