(800) 853-2651
SHOP NOW

gas vs electric motor hp

N

Nathaniel Watts

Member
I am considering replacing the compressor on my portable gas air compressor. The new ones I see require 3 or 5 horse electric motors. I have the 3hp compressor now ran by a 6.5hp briggs ohv engine. It seemed to pull it easily when the compressor was new. Now the compressor is shot. Will it pull the new one that requires 5hp?
 
I think the reason it states 2 horsepower requirements is because of different speeds. The common rule of thumb is to double the horsepower when going from electric motor to gas engine. If you can put a small enough sheave on the engine it will probably work OK.
 
Horsepower is horsepower, but most small engines
have horsepower rated at 3600 RMP. The average
electric motor is rated at 1750 RPM, but you can
get them that run at 1150, 3600, and all over the
place.
The horsepower formula is: Torque x RPM divided
by 63025, equals horsepower. I don't know if the
torque is foot lbs or inch pounds, but i'm sure
someone here will know it
Then the question is: Where can you find the
torqe of your engine/moter, at a specified RPM ?
 
(quoted from post at 23:34:18 01/11/11) I am considering replacing the compressor on my portable gas air compressor. The new ones I see require 3 or 5 horse electric motors. I have the 3hp compressor now ran by a 6.5hp briggs ohv engine. It seemed to pull it easily when the compressor was new. Now the compressor is shot. Will it pull the new one that requires 5hp?
Click to expand...

As previously stated, HP is HP. Where people can't see the difference is torque rise during overload.
A 5HP motor may only be able to produce 120% torque rise when lugged under overload.
A 5HP electric motor can easily for brief periods of time produce 200 to 250% torque rise when lugged.
Depends on the type of load. Constant or varying.
 
You must log in or register to reply here.

Similar threads

M
gas to electric conversion
Replies
13
Views
1K
Texasmark
T
C
electric motor
2
Replies
21
Views
862
Dusty MI
D
J
Electric question
2
Replies
22
Views
1K
JMOR
J
R
More JD 70 Pony Motor Frustration
Replies
14
Views
1K
Blksmok
B
H
IH 574 Gas - Popping Under Load - At my wit's end
Replies
6
Views
778
sandcastle1
S
Tractor Parts Tractor Manuals

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Copyright © 1997-2024 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters
Website Accessibility Policy

Back
Top