Menu
Forum
What's new
New posts
Live Activity
Search forums
Members
Registered members
Classifieds Member Feedback
Car Audio Discussion
General Car Audio
Car Audio Build Logs
Car Audio Equipment
Subwoofers
Speakers
Amplifiers
Head Units
Car Audio Help
Wiring, Electrical and Installation
Enclosure Design & Construction
Car Audio Classifieds
Car Audio Classifieds
Car Audio Wanted
Classifieds Member Feedback
Gallery
New media
New comments
Search media
SHOP
Shop Head Units
Shop Amplifiers
Shop Speakers
Shop Subwoofers
Shop eBay Car Audio
Test
Forum
Search
Search titles only
Search titles only
Log in / Join
Search
Search titles only
Search titles only
What's new
New posts
Live Activity
Search forums
Members
Registered members
Classifieds Member Feedback
Menu
Reply to thread
Forum
Car Audio Discussion
General Car Audio
Output @ Idle
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Message
<blockquote data-quote="Melissa Stephens Jones" data-source="post: 8760681" data-attributes="member: 683751"><p><strong><span style="color: rgb(97, 189, 109)">QUESTION:</span></strong> </p><p><span style="font-size: 18px">When an "Alternator Manufacturer" gives you an "Output at Idle" number - What do you want to hear? Most people just want to hear a high number and they're happy from that point on out.... Until they have 12.4 volts at a stoplight and 14.8 when they drive... Do you think they have been “deceived” lied to? </span></p><p><span style="font-size: 18px"></span></p><p><span style="font-size: 18px">The industry standard for an "Idle output" test is 2400 ROTOR rpm. That's approximately 800 engine rpm if you have a 3:1 pulley ratio. It’s been that way for years...& as far as today that number should really be 2000 Rotor RPM instead of 2400 because crank pulleys have got way smaller on most vehicles which makes the "Output at idle" rating even LESS. Personally, I do not feel that any passenger car alternator on the planet will do 220 amps at 2000 rotor rpm. </span></p><p><span style="font-size: 18px">To my knowledge there is not a single manufacturer that rates their alternators by this method. They all use the "Boss Audio Amplifier" rating method. (1000-watt amplifier rated at "4000 Watts".)</span></p><p><span style="font-size: 18px"></span></p><p><span style="font-size: 18px">Do you want to be deceived and be told what the "best case scenario" is? Such as "XX amperage" alternator will do "230+ amps at idle" On "XX car"... which idles at 1000 rpm and has an 8" crank pulley which is typically a 4:1 ratio...</span></p><p><span style="font-size: 18px">ANY THOUGHTS?...</span></p></blockquote><p></p>
[QUOTE="Melissa Stephens Jones, post: 8760681, member: 683751"] [B][COLOR=rgb(97, 189, 109)]QUESTION:[/COLOR][/B] [SIZE=5]When an "Alternator Manufacturer" gives you an "Output at Idle" number - What do you want to hear? Most people just want to hear a high number and they're happy from that point on out.... Until they have 12.4 volts at a stoplight and 14.8 when they drive... Do you think they have been “deceived” lied to? The industry standard for an "Idle output" test is 2400 ROTOR rpm. That's approximately 800 engine rpm if you have a 3:1 pulley ratio. It’s been that way for years...& as far as today that number should really be 2000 Rotor RPM instead of 2400 because crank pulleys have got way smaller on most vehicles which makes the "Output at idle" rating even LESS. Personally, I do not feel that any passenger car alternator on the planet will do 220 amps at 2000 rotor rpm. To my knowledge there is not a single manufacturer that rates their alternators by this method. They all use the "Boss Audio Amplifier" rating method. (1000-watt amplifier rated at "4000 Watts".) Do you want to be deceived and be told what the "best case scenario" is? Such as "XX amperage" alternator will do "230+ amps at idle" On "XX car"... which idles at 1000 rpm and has an 8" crank pulley which is typically a 4:1 ratio... ANY THOUGHTS?...[/SIZE] [/QUOTE]
Insert quotes…
Verification
Post reply
Forum
Car Audio Discussion
General Car Audio
Output @ Idle
Top
Menu
Home
Refresh