Bunky Posted October 26, 2003 Posted October 26, 2003 Whats the Difference between a Broadmoor S/G and a Landlord S/G????? Also has anyone seen a S/G that open on the top like this one ?????? [img]http://www.simpletractors.com/club2/uploaded/BUNKY/MVC-003S.JPG[/img]
Salthart Posted October 26, 2003 Posted October 26, 2003 The SGs for the vertical engines were shorter and not as strong if memory serves. Never seen an open top like that one..
fuzy Posted October 26, 2003 Posted October 26, 2003 You are correct Salthart. They are shorter and probably not as strong. I also agree I have never seen an open one. John
Al Posted October 26, 2003 Posted October 26, 2003 Hi, Looks like someone has replaced the front end plate with one from a regular generator, pobably has the matching one on the rear, or the bolts won't line up. They would have had to move the locating pin or notch. My 2 cents worth and its free, value accordingly. Al Eden Also above posts are correct, the 7, 8 and 10 hp starter gens had the short frame and a shorter lamination stack in the armature and about 20% less torque.
Bunky Posted October 27, 2003 Author Posted October 27, 2003 Thanks Guy I didn't think that cover was the right one.. I also thought that there wasa difference in the broadmoor and landlords.... Yes it was free so I will just use it.. if it goes out I'm not out anything....
Bunky Posted October 27, 2003 Author Posted October 27, 2003 Well I took off the S/G the bottom was just like Al Said it too was all open.. How do you tell if it's a S/G or just a Generator???
simplicityman28634 Posted October 27, 2003 Posted October 27, 2003 I agree the brordmoor is shorter then the landlord.At lease that is what i have read.
Al Posted October 27, 2003 Posted October 27, 2003 Hi, The armature for a generator and a starter generator, will look alike, as will the armatures out of a 6 volt generator and a 12 volt generator. On closer examination, the 12v generator armature will have more turns in each coil that is "laid" in the armature slots. To look at the armatures, it is hard to diferentiate between a 6 and 12 volt arm or a starter gen arm, but the starter gen arms are usually wound with larger diameter wire. Looking at the field housing the generator will have 2 field coils one on each side. Each one will be wound with fine wire maybe between #20 and #24 guage enamel insulated magnet wire. The 2 coils will be connected in series with each other. There are 2 ways they are connected. What is called "A" circuit where the field coil is connected to the output brush and the other end is connected to the "F" terminal of the case. In this configuration, the output of the generator is connected to the field coil and the voltage regulator controls the output by regulating the path to ground. This circuit is most commonly used in Starter generators, Delco and Autolite agricultural and automotive applications with generators up to 20 amp output. The next approach is the "B" circuit configuration. In this appliction, the field coil is connected to ground on one end and the other end connected to the "F" terminal of the case. In this set up, the Voltage regulator takes voltage from the "Arm" terminal and applies it to the F terminal to regulate the output. Typiclally Delco generators over 20 amps, most Ford generators and some Autolite generators are "B" circuit types. Regulators for the 2 types are not interchangeable and will not work that way. They look the same on the outside. Starter Generators are half a generator. There is one generate field coil that is wound with small wire as in a regular generator. It will be [shunt] connected from the output brush and the other end to the "F" terminal of the case ["A" circuit] The other field will be a heavy series coil wound out of copper strap about 1/16 inch thick and about 1/4 inch wide. This coil will be connected from the "A" terminal of the case and in series to the output brush. Since it has only one field coil for the generator side, the charging is usually limited to less than 10 amps. In the start mode, the regulator is providing a ground to the gen field. 12 volts comes in on the "A" terminal through the series field [which has very little loss] to the output brush, to the armature, this voltage also is applied to the gen field. The high current through the series field causes this field pole to have a very strong magnetic field. The heavier the load, [ie engine] the more current is drawn, the stronger the field, thus more torque. At the same time the gen coil field is also magnetized, however in no way can this shunt connected field can provide the magnetic field needed to provide starting torque. The heavy series connected coil is needed to do this. Next the brushes for a starter generator look like the brushes from a regular generator. They are different, they have copper powder added to the carbon to increase the current carrying capacity and reduce the voltage drop in them. If regular generator brushes are used, the starting torque will be reduced, but the generator function will not be impaired. Somewhere on this site are some articles I have written on starter genertors and voltage regulators and how they work. These articles are also on our web site www.edensltd.com look under Tech Notes, there a number of articles I have done there. My 2 cents worth and its free, value accordingly. Al Eden
Bunky Posted October 28, 2003 Author Posted October 28, 2003 Well If it's just a Generator will it spin if you hook current to it?????
MPH Posted October 28, 2003 Posted October 28, 2003 Once again Al, thats a pretty good '2 cents' worth..thanks for the time you spend on these indebt answers..MPH
Bunky Posted October 29, 2003 Author Posted October 29, 2003 Well I think that what I have is a Generator not a Starter Generator then... Because When I hook up 12 volts to it, It spins Sloooow...
Boney Posted October 29, 2003 Posted October 29, 2003 Is it possible that the battery is low ? Can you start your tractor with a rope ?
Bunky Posted October 29, 2003 Author Posted October 29, 2003 No i jumped it with my Jumper Box.. I don't even have it hooked up I was just "Bench Testing it"
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