audiofanaticz Posted September 27, 2008 Report Share Posted September 27, 2008 You need a large load for testing alternators. If your testing a 300 amp alternator with a 100amp load, your gonna get a 100 amp test result. So Your gonna need to find a way to load your alt(s) down to at least 300 amps for testing a 300 amp alternator. Thats all Im saying. Quote Link to comment Share on other sites More sharing options...
Andrew2944r Posted September 27, 2008 Author Report Share Posted September 27, 2008 im pretty sure he said he tested them on a dyno ... which has some from of a carbon pile load device on them that can test full output of alternators.. Correct full Load was applied when Dyno'd for full output senario. Quote Team Ampere Audio Link to comment Share on other sites More sharing options...
jonnylowkon Posted September 27, 2008 Report Share Posted September 27, 2008 i have a 200 amp carbon pile pack adjustable load tester and i just turned on my headlights (20 amps) a/c with blower motor (30 amps) and the ignition systems draws 10 amps no stereo or wipers nothing that doesnt have a constant current draw... so 260 amps is as far as i could go to test with .. Quote 250 amp mechman alt Sundown 100.4D Sundown 1500v2 now goin to the cruze Sundown ZV3 12d2 Sundown sa6.5cs X2 Kenwood X597 Trying something new 2011 Chevy Cruze X8 1500v2 Link to comment Share on other sites More sharing options...
Andrew2944r Posted September 27, 2008 Author Report Share Posted September 27, 2008 (edited) You need a large load for testing alternators. If your testing a 300 amp alternator with a 100amp load, your gonna get a 100 amp test result. So Your gonna need to find a way to load your alt(s) down to at least 300 amps for testing a 300 amp alternator. Thats all Im saying. That is correct seeing if 100 amp load was used, I seriously doubt I would have gotten 265 and 280 amps out of either Alt. Im not to dissappointed at the output as I am the junk chinese parts in either Alt. Edited September 27, 2008 by Andrew2944r Quote Team Ampere Audio Link to comment Share on other sites More sharing options...
jonnylowkon Posted September 27, 2008 Report Share Posted September 27, 2008 Correct full Load was applied when Dyno'd for full output senario.did u see any rotor rpm drop when u cranked on the load on the dyno?? i seen alittle more than a 100 rpm drop at idle with full load and at 2000rpm u could defently tell the alt was putting a pretty good load on the engine and tring to pull the rpm down.. Quote 250 amp mechman alt Sundown 100.4D Sundown 1500v2 now goin to the cruze Sundown ZV3 12d2 Sundown sa6.5cs X2 Kenwood X597 Trying something new 2011 Chevy Cruze X8 1500v2 Link to comment Share on other sites More sharing options...
IH8PunkRok Posted September 27, 2008 Report Share Posted September 27, 2008 very good info to know here thank you for this test Quote -Matt2005 Dodge Magnum RTJVC KD-AVX1 2 PPI S580.2 Obsidian Audio ST1 Horn Tweeters PRV 8MB450s Audio Legion 3500.1D 2 RE MT 18s 360 ah LiFePO4 BatterySHCA 2/0 155.2 @ 29 hzKicker CVR 15's buildDD 3512e buildMini T-Line Build(6) 8s BuildNightshade 15s Wall BuildMagnum AB XFL 12s BuildNewest Magnum Build Link to comment Share on other sites More sharing options...
jonnylowkon Posted September 27, 2008 Report Share Posted September 27, 2008 ok just so this doesnt become a bash thread or anything lets just post what alternator u have (amperage wise) how long has it been in service and what was ur method of testing output Quote 250 amp mechman alt Sundown 100.4D Sundown 1500v2 now goin to the cruze Sundown ZV3 12d2 Sundown sa6.5cs X2 Kenwood X597 Trying something new 2011 Chevy Cruze X8 1500v2 Link to comment Share on other sites More sharing options...
Andrew2944r Posted September 27, 2008 Author Report Share Posted September 27, 2008 did u see any rotor rpm drop when u cranked on the load on the dyno?? i seen alittle more than a 100 rpm drop at idle with full load and at 2000rpm u could defently tell the alt was putting a pretty good load on the engine and tring to pull the rpm down.. Not much RPM drop at all maybe 25 - 50 at most. My biggest concern is the metal used in the Alts, Heat expansion with chinese metal is horrible and when the Alts do fail you can almost gurantee this is the direct cause of it. Bring back the US Made Beefy Alts Quote Team Ampere Audio Link to comment Share on other sites More sharing options...
Andrew2944r Posted September 27, 2008 Author Report Share Posted September 27, 2008 ok just so this doesnt become a bash thread or anything lets just post what alternator u have (amperage wise) how long has it been in service and what was ur method of testing output Wasnt a bash thread, the Alts do what I need them to do, there just not as efficient as I once thought. Quote Team Ampere Audio Link to comment Share on other sites More sharing options...
jonnylowkon Posted September 27, 2008 Report Share Posted September 27, 2008 yea besides 300 ampers arnt for daily guys really ... they r more of a comp alt since u have to spin them faster to produce that higher output... an i just meant by the bash thread i didnt want people saying one or another company sux over another over just one alt test outta how many that r out there in service..iraggi mechman and the others all r good companys Quote 250 amp mechman alt Sundown 100.4D Sundown 1500v2 now goin to the cruze Sundown ZV3 12d2 Sundown sa6.5cs X2 Kenwood X597 Trying something new 2011 Chevy Cruze X8 1500v2 Link to comment Share on other sites More sharing options...
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