After I wrote the previous email I found my reference material. It was in a
catalog on hydraulic motors.
Here is the equivalences given:
1 HP electric motor = 1 1/2 HP hydraulic motor
1 HP gas engine = 2/3 hydarulic motor
1 HP hydraulic motor = 1 2/3 HP gas engine
1 HP hydraulic motor = 2/3 HP electric motor
So if my math is right at this late at this early hour of the day I come up
with the following:
1 HP electric motor = 2 1/2 HP gas engine
Bill
> ----- Original Message -----
> From: "Bill "Pokey" Bennett" <bennevl@bellsouth.net>
> To: <land-speed@autox.team.net>
> Sent: Sunday, January 26, 2003 11:19 PM
> Subject: Re: Dry sump & Electric Motors
>
>
> > Ok I may be setting myself up here, but I will stick my neck out.
> > Somewhere years ago I saw a conversion factor for converting from an AC
> > electric motor to a gas engine drive on hydraulic pumps. I can not
> remember
> > what the number was, but do remember it was NOT one for one. I know I
know
> > how can HP not equal HP. Think it maybe because of torque and rpm
because
> > typically a hyraulic pump would be running at 1750 rpm with an AC
electric
> > motor, and with a gas engine would be running closer to 3600 rpm.. Now
> here
> > comes another thought. Dry sumps run at half speed so lets say around
4500
> > rpm. Now most DC motors run around 2400 rpm. Now a pulley swap to get
pump
> > speed and I have given up half my torque capability.
> >
> > Bill
> > "putting on bullet proof vest"
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/// what is needed. It isn't that difficult, folks.
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