automobile starter motors
automobile starter motors
(OP)
IS THIS AN APPROPRIATE QUESTION FOR THIS FORUM? Do you have information, experience, or suggestions regarding using starter motors from trucks and cars under continuous operating conditions? My hopes are to use a low cost motor to power my boat. My question is how much can I load a motor without it overheating. How much additional HP can I expect by having the case wrapped with copper tubing and circulate cold water to keep the case cool? What is a good RPM to have them run for best efficiency? I plan on using PWM to keep in the wanted power and speed curves. If I build my own controller, what is the best method to use for speed and power control? Should the field be kept alive constantly and pulse the armature, operate in pulse mode with a series wound motor, or ????? If you don’t have information and or thoughts along this line, any idea where I can go on the net and find people who might have interest in this method of using motors? Thanks for any and all ideas, suggestions, or just comments, Bernie





RE: automobile starter motors
I don't think you can have a normal vehicular starter for power boat application.In cranking application(prime mover of engine) it is in circuit for only a fraction of time and by that time it drains from the battery current in 100s of amps.You need to have very high ampere hour battery which will come very heavy and will drain rapidly - low mileage .Further I think these starter motors are not rated for continous duty.Go for outboard engine instead.
RE: automobile starter motors
Even it could operate continuously, I suspect it would be incredibly inefficient and consume lots of power. Plus you would have to provide some type of speed control.
I think the least expensive solution would be to buy an inexpensive electric trolling motor designed for this application.
RE: automobile starter motors
RE: automobile starter motors
Yes I realize it cannot be run continuous at full power, thus the concern about PWM. I have seen them used in commercial applications and last for years and they are a very solid motor thus used. They are built for max. load, and when used under less demanding loads, the bearings and brushes last a long time. I have lost my contact with these folks, and do not know how they were controlled, operated, etc. For my use it will not be turning a prop. A tolling motor will not work. Thanks for all inputs and ideas. They all are very interesting and help me to think about what I am doing.
RE: automobile starter motors
(46MM STATOR CORE)BUT IMAGINE THE RATING IS 1.0HP!!!!(720WATTS)
YOU CAN OPERATE IT CONTINUOUSLY BECAUSE THE INHERENT NATURE OF THE
VACUUM CLEANER IS TO SUCK AIR WHICH IN TURN COOLS THE MOTOR EFFECTIVELY
THE LIFE GUARANTEED IS 250HRS AND THE VAC CLEANER ITSELF COSTS
20 DOLLARS!!!.TRY TO USE PWM FOR THIS TYPE OF MOTORS WITH APPROPRIATE COOLING
RE: automobile starter motors
RE: automobile starter motors
RE: automobile starter motors
RE: automobile starter motors
RE: automobile starter motors
RE: automobile starter motors
RE: automobile starter motors
RE: automobile starter motors
RE: automobile starter motors
http://www.thomasregister.com
and type Motors: DC under Product or Service which will return 322 companies to inquire about the right solution.
RE: automobile starter motors
RE: automobile starter motors
RE: automobile starter motors
RE: automobile starter motors
RE: automobile starter motors
I am presently building my kids an electric go-cart. It is a new and unusual design. In my search for an appropriate motor to drive it, as well as batteries, chargers and controllers, I have found this site to be the only one on the net that offers all of what I need. Please visit:
http://ecoleco.freeservers.com/scooterparts.htm#MOTOR200
They have 24VDC motors there, at a very reasonable price, with controllers, batteries etc. I have seen an 800Watt motor available there, at 24VDC. These motors are specificaly designed to move people around, up and down hills, for extended periods of time. Maybe this will help you?
RE: automobile starter motors
RE: automobile starter motors
Now, I want to sell or make stronger trolling motor about 250W, but standard light 250W trolling motor have propeller suitable for 480kg(1100lb) weight boat, max. thrust about 22lb and max. boat speed about 5.5 km/h ~ 3.3 mph (MotorGuide 22, Thruster 2200, see http://www.boote-magazin.de/testtechnik/motoren/tec1001.htm).
( I want to use car engine cooling fun, 2-speed DC 12V motor).Can anyone recommend me another propeller, with smaller thrust, about 16lb, and bigger boat speed, maybe about 5mph, suitable for light two person canoe and 250W / 20Amp trolling motor, maybe about 152.4mm ? propeller diameter with max.speed in range about 1500 - 2000rpm ??
RE: automobile starter motors
http://www.trolling-motor.net/
http://www.northlandmarine.com/MinnKotaQuickRef.htm
etc. for more info on trolling motors
RE: automobile starter motors
Quando Omni Flunkus Moritati
RE: automobile starter motors
I forgot the 24VDC part. Both of those are probably 110VDC.
My bad.
Never mind.
Quando Omni Flunkus Moritati
RE: automobile starter motors
RE: automobile starter motors