Wow, 9000 RPM on a brushed 11" motor? That must be a strong commutator! My US Electricar truck has a 9000 RPM Hughes induction motor. The high redline allows the truck to drive 0 - 72 MPH without gearshift. The way they did that was by ordering the 1994 S10 truck with the manual gearbox but the body of the automatic. They used the gear shift lever to add a parking pawl and a set of contacts to tell the controller forward, neutral, reverse but no connection to the manual gearbox. Instead they locked the manual box in 2nd gear so it is only a fixed reduction, in addition to the diff in the rear axle. Result is that you get 8 MPH speed for every 1000 RPM on the motor in the truck. The sedan that they also converted had slightly less reduction so every 1000 RPM gave about 9 MPH. The automatic gear shift lever still uses the 3 forward gear selections (D, 2, 1) to tell the controller to change the regen braking amount, so it feels as if you have more "motor compression braking" when you select a lower gear, but the motor is actually spinning at the same speed, it is just control signals for the inverter. I have never seen a brushed motor of this size with that high RPM, my previous EV truck had a 13" GE motor with 4000 or 4500 RPM redline. It was overkill to have such large motor and the controller was struggling with it. Cor.
-----Original Message----- From: EV [mailto:[email protected]] On Behalf Of Pestka Dennis via EV Sent: Tuesday, March 27, 2018 6:16 AM To: Rod Hower; Electric Vehicle Discussion List Cc: Pestka Dennis Subject: Re: [EVDL] GE Interpole Motor The document shows electric cars, trucks, buses, etc. Sent from my iPhone > On Mar 27, 2018, at 7:04 AM, "Rod Hower via EV" <[email protected]> wrote: > > I wonder what these where originally used for? Probably a European > 72Vdc forklift pump motor?FS: 11" GE BT2300 DC series wound motors w/ > interpoles - $1000 - Fuel Economy, Hypermiling, EcoModding News and > Forum - EcoModder.com > > > | > | > | > | | | > > | > > | > | > | | > FS: 11" GE BT2300 DC series wound motors w/ interpoles - $1000 - Fuel ... > A friend of mine is selling a few of these GE 2300 series DC series wound > motors he picked up for a real deal. H... | | > > | > > | > > > > > On Tuesday, March 27, 2018 7:50 AM, Pestka Dennis via EV > <[email protected]> wrote: > > > > ________________________________ > I'm getting close to running a new motor in the 72 Vega. > It's a 11" GE BT2300 Interpole Motor. Rated for 240V, 9000 rpm. > As far as what I've found on these, the interpole windings are suppose to > prevent the armature and brushes from arcing due to build up of magnetic > forces. They also allow the armature to draw heavier currents, and carry > larger shaft loads. The interpoles are suppose to do electrically, what > advancing the brush angle mechanically, only better. > > Anyone have any additional info or opinions on this motor. > > Waiting for modifications of my drive shaft, and should have it on the road > in a few weeks. > Can't wait to see how this motor performs. > > Thanks; > Dennis > > > __._,_.___ > ________________________________ > Posted by: Pestka Dennis <[email protected]> > ________________________________ > Reply via web > post<https://groups.yahoo.com/neo/groups/NEDRA/conversations/messages/21164;_ylc=X3oDMTJyanVyODVwBF9TAzk3MzU5NzE0BGdycElkAzE3MDQyNzg5BGdycHNwSWQDMTcwNTEyMzI0NARtc2dJZAMyMTE2NARzZWMDZnRyBHNsawNycGx5BHN0aW1lAzE1MjIxNTEyMTg-?act=reply&messageNum=21164> > • Reply to sender > <mailto:[email protected]?subject=Re%3A%20GE%20Interpole%20Motor> > • Reply to group > <mailto:[email protected]?subject=Re%3A%20GE%20Interpole%20Motor> • > Start a New > Topic<https://groups.yahoo.com/neo/groups/NEDRA/conversations/newtopic;_ylc=X3oDMTJmbHNwNmliBF9TAzk3MzU5NzE0BGdycElkAzE3MDQyNzg5BGdycHNwSWQDMTcwNTEyMzI0NARzZWMDZnRyBHNsawNudHBjBHN0aW1lAzE1MjIxNTEyMTg-> > • Messages in this > topic<https://groups.yahoo.com/neo/groups/NEDRA/conversations/topics/21164;_ylc=X3oDMTM3Mmpsa3FzBF9TAzk3MzU5NzE0BGdycElkAzE3MDQyNzg5BGdycHNwSWQDMTcwNTEyMzI0NARtc2dJZAMyMTE2NARzZWMDZnRyBHNsawN2dHBjBHN0aW1lAzE1MjIxNTEyMTgEdHBjSWQDMjExNjQ-> > (1) > ________________________________ > [https://s.yimg.com/ru/static/images/yg/img/megaphone/1464031581_phpFA > 8bON] Have you tried the highest rated email > app?<https://yho.com/1wwmgg> With 4.5 stars in iTunes, the Yahoo Mail > app is the highest rated email app on the market. 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