The truth about alternators?
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Gold Member Username: Trey4sportsPost Number: 1110 Registered: Sep-06 | alright i was replying to a thread on ROE, and this guy was telling me that alternators put out 125% of their advertised amperage and sometimes more. i argued with him and told him it sounded like BS but he swares to it. hes a vet over on ROE. anyway can any of the electrical system guru's provide insight on this subject?? M.S., RR, wolfman?? |
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Gold Member Username: J_baby15DiRtY 5oUtH ... Post Number: 1760 Registered: Feb-06 | meade's 300a alts i believe benched at maybe 320 or 325+ ...i would say in some cases they could do a lil over they're rated power...but idk bout all the time. Maybe he's just thinkin if you rev the engine up alot that you'll get more power from the alt and itll keep increasing....idk. |
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Gold Member Username: Matt12490California USA Post Number: 2354 Registered: May-05 | Where did Steve get his alts? Sounds like a quality brand. |
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Gold Member Username: Safe_crackerChicago, IL US Post Number: 2804 Registered: Jan-06 | "alright i was replying to a thread on ROE, and this guy was telling me that alternators put out 125% of their advertised amperage and sometimes more." This is true, but as the temperature goes up so does resistance and power loss. Polo. |
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Gold Member Username: Nd4spd18Southeast PA Post Number: 2268 Registered: Jul-06 | I've never actually tested an HO alternator, but that sounds entirely possible. It may even depend on the brand/quality of the alternator. Also, alternators are rated for a certain amount of power AT a certain RPM for driving and for idle. |
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Silver Member Username: Smoke05Tucson, Arizona U.S. Post Number: 576 Registered: Jan-07 | plus not all more than 125% the rated power, it is imposible. just saying that statistically speaking this is imposible.... lol that statistics class opened my eyes. lol |
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Gold Member Username: J_baby15DiRtY 5oUtH ... Post Number: 1763 Registered: Feb-06 | Steve got his from Iraggi most places that test alts do it at like 2k-2.5k rpm...so thats prolly wehre they rated at...lets say u was at 2.5k+ tho, I think that may make the output go up...not positive. Kinda like some amps are rated at 12v..but if u run em at 14.4v u get more power. Thats the way im lookin at it, if that makes sense to anyone else. |
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Gold Member Username: Nd4spd18Southeast PA Post Number: 2271 Registered: Jul-06 | why: 125% of the rated power is 1.25 times the rated power. That is not impossible. |
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Gold Member Username: Safe_crackerChicago, IL US Post Number: 2805 Registered: Jan-06 | It is intirely possible. These measurements are temperature dependant. It is a proven fact that as an alternater generates heat it loses power this is well known. Manufactures try to compensate for this by adding a little extra to offset this. Remember this when summer gets here. Polo.. |
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Silver Member Username: NorthomahaPost Number: 369 Registered: Mar-06 | that makes sense. i have heard that a lot of HO alts put out about the same amperage as stock alts at idling speed. could definatley be wrong tho. |
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Gold Member Username: Nd4spd18Southeast PA Post Number: 2276 Registered: Jul-06 | ^^^^ that is false. What do you think the "idle amperage rating" is? |
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Silver Member Username: NorthomahaPost Number: 371 Registered: Mar-06 | yea on Iraggis it is 100 on the models for my car even on the 300 amp model. and i believe my idle amp rating on my alt in my car is 100 also tho. i could be wrong and i am getting off topic anyway |
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Gold Member Username: Th3pwn3rPost Number:... Post Number: 2489 Registered: Jul-06 | 100 is most likely your max amperage on the stock alt.If that... |
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Gold Member Username: Trey4sportsPost Number: 1111 Registered: Sep-06 | what is your car? alts vary by car becuz my vehicle is 120 max 110 idle |
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Gold Member Username: Basshead86FTW Post Number: 9956 Registered: Aug-05 | mines 250a |
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Silver Member Username: ClouduzPost Number: 209 Registered: Jun-06 | got u beat mines is 90a pure power baby!! |
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Gold Member Username: Safe_crackerChicago, IL US Post Number: 2808 Registered: Jan-06 | Mine is 300A (340A max cold) and 255A at idle. Polo.   |
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Gold Member Username: Trey4sportsPost Number: 1115 Registered: Sep-06 | polo, who built that amp for you becuz i want high amperage at idle |
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Gold Member Username: Safe_crackerChicago, IL US Post Number: 2810 Registered: Jan-06 | Iraggi amputator series |
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Gold Member Username: J_baby15DiRtY 5oUtH ... Post Number: 1764 Registered: Feb-06 | polo..how'd u get that much at idle? i can't find one with that high of an idle. |
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Gold Member Username: Trey4sportsPost Number: 1118 Registered: Sep-06 | i cant either, did they custom build it for you? and how much $$ ?? |
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Gold Member Username: AdddisorderWest palm, Florida Post Number: 4328 Registered: Jan-06 | it was custom built and i remember polo saying before i think he payed 500+ for it |
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Silver Member Username: Aman2005Patiala, Punjab India Post Number: 420 Registered: May-06 | woooooo 500+ USD, I can buy a brand new scooter or an used car here for that much :D |
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Silver Member Username: TonPost Number: 134 Registered: Jul-05 | Damn, that's a nice Alt. you got Polo. what kind it is the AC Delco CS-144 large case? |
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Gold Member Username: Safe_crackerChicago, IL US Post Number: 2814 Registered: Jan-06 | Ya it is a custom and it is a large case, big ol pumkin compared to my old one! BTW it also has an overdrive pulley on it to make it spin faster overall. Polo..  |
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Gold Member Username: Safe_crackerChicago, IL US Post Number: 2816 Registered: Jan-06 | Oh one other thing, the unit is from Bosch, they had to special order it. Polo.. |
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Gold Member Username: Wolfman1966Http://www.realmofexcu..., Always remem... USA Post Number: 2861 Registered: Jan-06 | Trey Goettling said, "alright i was replying to a thread on ROE, and this guy was telling me that alternators put out 125% of their advertised amperage and sometimes more. i argued with him and told him it sounded like BS but he swares to it. hes a vet over on ROE. anyway can any of the electrical system guru's provide insight on this subject?? M.S., RR, wolfman??" HEY GUYS!! I didn't know I was a guru! Why didn't someone tell me...lol |
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Gold Member Username: Safe_crackerChicago, IL US Post Number: 2817 Registered: Jan-06 | Noobs think everyone is a guru! Now ask what experienced people think of you, lmfao..Polo. |
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Gold Member Username: Wolfman1966Http://www.realmofexcu..., Always remem... USA Post Number: 2864 Registered: Jan-06 | f@ck the experienced people, I AM a GURU!!!lol  |
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Gold Member Username: Safe_crackerChicago, IL US Post Number: 2818 Registered: Jan-06 | More like Corky from life goes on! |
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Silver Member Username: TonPost Number: 135 Registered: Jul-05 | thanks polo, and that's a nice looking Alt. you are lucky. |
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