Go To Bottom

Printable Version  
Author: Subject: what is the purpose of a harmonic damper?
GT_REVVA
TO Showoff
******




Posts: 6056
Registered: 3-8-2002
Location: Mecca, EDEN
Member Is Offline

Mood: when you KNOW you're smarter than someone, don't be afraid to LET THEM KNOW. -my Mom..smartest person I know :deal:

icon_article.gif posted on 28-12-2012 at 06:58 PM
what is the purpose of a harmonic damper?


Home Page :: BHJ Harmonic Damper Introduction

BHJ Harmonic Damper Introduction

BHJ Harmonic Dampers offer the most precise and advanced execution of the proven elastomer-style harmonic damper (also called Torsional Vibration Damper) design. Click for BHJ Nissan KA24 Harmonic Damper product page

Most engine designers prefer elastomer-type dampers because of their durability, superior high-frequency damping qualities, and ability to dampen all types of vibrations: torsional, axial and radial. Other damper designs are limited to damping torsional vibrations only.

S.F.I. 18.1 approved dampers are available for most engines in two versions, all steel and aluminum hub/steel inertia ring "Combo" styles. Both types are typically much lighter than the O.E.M. units they replace and are lighter than many competitive aftermarket dampers.

All-steel dampers have been manufactured by BHJ longer than any other company in the industry. They have proven their merit in thousands of applications, including offshore boats, drag racing, super speedways, short track, road racing and off-road, as well as street-driven sports cars, hot rods and grocery getters.

Click for BHJ Ford Cup Special Combo Harmonic Damper product page, used on Team ORECA Saleen S7R Aluminum/steel "Combo" dampers are a result of BHJ's experience in the performance industry. The Combo damper design mates a lightweight aluminum hub with a steel inertia ring and is available for most internal-balance dampers. Established damper technology proves that the mass of the non-damping elements in any design actually amplifies harmonic vibrations. Therefore, elimination of non-damping mass greatly improves the effectiveness of any damper. In many instances this will allow the use of a smaller size damper. The lighter hub and smaller size provide for appreciably faster potential acceleration.

BHJ's E-Performance dampers are an economical, nodular iron alternative for use in high-performance street or racing applications where S.F.I. certification is not required. The E-Performance damper series is also very popular in racing classes where a "stock-appearing" (non-S.F.I.) damper is mandated by the sanctioning body. E-Performance dampers are lighter than their O.E.M. counterparts and equivalent in price.

Both S.F.I. and E-Performance harmonic dampers are custom designed to meet each specific application and all critical O.E.M. mounting dimensions are duplicated for accurate alignment of accessory drives. All harmonic dampers feature a T.D.C. mark and when necessary, are degreed from 0 to 50 degrees B.T.D.C. in 2-degree increments for accurate ignition timing. 90-degree marks are also included for easy valve adjustment.

Click for BHJ Huffaker BMC A-Series Harmonic Damper product page Externally balanced dampers feature a machined-in-place counterweight that precisely matches the O.E.M. unit it replaces and are available in all-steel or nodular iron only. Internal or neutral-balance Dampers are zero-balanced before shipment.

Custom Design Programs for specialized engine applications, vintage restoration and crate engine programs are also available in nearly unlimited configurations, whether S.F.I. certification is necessary or otherwise. Programs are available for a wide variety of budgets and production quantities. BHJ's state-of-the-art damper design technology assures precise tuning for outstanding performance and long engine life in any operating environment.

http://www.bhjdynamics.com/index.php?main_page=damperintro&zeni...

http://www.bhjdynamics.com/downloads/pdf/tech/BHJDynamics_Damper_In...




he who knows and, knows he knows...he is a wise man , seek him
he who knows and, knows not he knows....he is asleep, wake him
he who knows not and, knows he knows not...he is a child, teach him
he who knows not and, knows not he knows not...he is a fool, shun him
Mulberry:The car is reliable, it has made at least 100 passes on the dyno and it has passed the GT_REVVA test
sleepyrz:yea and if he cant get it to break you sure as hell cant

krussure of nubz dreemz Ultrasound Baby Driving
DivisionOne Article Autoblog RR articleFACT THREAD TO Members' Modded Rides TO HORSEPOWER LEADER BOARD
VISIT MY STORE
View user's profile Visit user's homepage View All Posts By User
GT_REVVA
TO Showoff
******




Posts: 6056
Registered: 3-8-2002
Location: Mecca, EDEN
Member Is Offline

Mood: when you KNOW you're smarter than someone, don't be afraid to LET THEM KNOW. -my Mom..smartest person I know :deal:

[*] posted on 28-12-2012 at 09:34 PM


it's heavy technical jargon but the second link tells exactly what it does and why it's designed the way it is



he who knows and, knows he knows...he is a wise man , seek him
he who knows and, knows not he knows....he is asleep, wake him
he who knows not and, knows he knows not...he is a child, teach him
he who knows not and, knows not he knows not...he is a fool, shun him
Mulberry:The car is reliable, it has made at least 100 passes on the dyno and it has passed the GT_REVVA test
sleepyrz:yea and if he cant get it to break you sure as hell cant

krussure of nubz dreemz Ultrasound Baby Driving
DivisionOne Article Autoblog RR articleFACT THREAD TO Members' Modded Rides TO HORSEPOWER LEADER BOARD
VISIT MY STORE
View user's profile Visit user's homepage View All Posts By User
Paseobeater
Junior TO Member
***




Posts: 457
Registered: 23-5-2006
Location: Dunham, Quebec, Canada
Member Is Offline

Mood: Red Paseo Trac car

[*] posted on 18-1-2013 at 04:34 AM


good things these armonic pulley.

cheap alu pulley kills engine real bad depending of your car





Put your wheels up in the air
View user's profile Visit user's homepage View All Posts By User
Gegueure
T.O. Patron
****


Avatar


Posts: 551
Registered: 25-1-2011
Location: Québec City, QC, Canada
Member Is Offline

Mood: TerSeoless.

[*] posted on 18-1-2013 at 07:59 AM


Oh yeah, i meant to tell you i read this, Revva. Can't say i got the jargon:doh: but still it makes it clear that a crank pulley is more than what you see...



View user's profile View All Posts By User This user has MSN Messenger
GT_REVVA
TO Showoff
Thread Topped
29-6-2013 at 06:45 PM
GT_REVVA
TO Showoff
******




Posts: 6056
Registered: 3-8-2002
Location: Mecca, EDEN
Member Is Offline

Mood: when you KNOW you're smarter than someone, don't be afraid to LET THEM KNOW. -my Mom..smartest person I know :deal:

[*] posted on 29-6-2013 at 06:51 PM


additionally



he who knows and, knows he knows...he is a wise man , seek him
he who knows and, knows not he knows....he is asleep, wake him
he who knows not and, knows he knows not...he is a child, teach him
he who knows not and, knows not he knows not...he is a fool, shun him
Mulberry:The car is reliable, it has made at least 100 passes on the dyno and it has passed the GT_REVVA test
sleepyrz:yea and if he cant get it to break you sure as hell cant

krussure of nubz dreemz Ultrasound Baby Driving
DivisionOne Article Autoblog RR articleFACT THREAD TO Members' Modded Rides TO HORSEPOWER LEADER BOARD
VISIT MY STORE
View user's profile Visit user's homepage View All Posts By User
Bassnectar
TO Member
**


Avatar


Posts: 52
Registered: 14-5-2011
Member Is Offline


[*] posted on 27-3-2014 at 10:02 PM


A harmonic balancer is used to help balance out the power pulses of a engine. for example a 4 cylinder has a piston entering combustion every 180 degrees that the crankshaft rotates

These externally mounted harmonic balancers often are made of rubber material that dampens vibrations.

some engines use the flywheel as another way to balance the crankshaft. it is a part that should be replaced when going 100's of hp over the stock motor design but gets overlooked and end up failing causing total engine carnage.



View user's profile View All Posts By User

  Go To Top

Powered by XMB 1.9.11
XMB Forum Software © 2001-2010 The XMB Group