Main     Register     My Home   PM     Who's on-line     Members     Search     Latest posts     AUP     Calendar     Album        Skin: AncientGunmetal SilverForest GreenLime GreenDesert BeigeBlack KnightPetroleum BlueCyan Blue     User:      Username    Password    Login Remember me Cancel Remember me    Forgot your password? Change your password

Technical Talk -> Exhausts. ZARD exhaust - Any one have eBay link for ... Short tors and decat pipesShort TORsStraight pipesCustom Exhaust IdeasCommander pipes on a StormGaskets.....Replacement Exhaust optionsMy custom 2 to 1 exhaust.Original LT or Commander mu...Exhaust wraps?OEM Exhaust hardwareLooking for Some After-Mark...Anyone ever install the Thu...For Those With Drilled Baff...Making the exhaust quieterReturn to stock exhaust: an...LOCKED ECUQuestion about Long TORs si...TORS vs Drilled BaffleStock exhaustFrom stock to shorter pipesExhaust LeakDave Platt´s exShort Tors UK anyone?Header shield fell off (the...Where is my Cat?Header pipe diameterDyno QuestionValve located in LH exhaustHelp with Cat removalDave Platt HeatshieldBack with the Cat??REMUS Exhaust SystemTOR Silencer KitCat removal//BracingBest engine tune for High F...D&D exhaust?Dave Platt Exhaust Tors Map with Stock pipes....2013 Triumph ThunderbirdAnother alternative for LT ...INFORMATION: Hog SlayersBRITISH CUSTOMS Exhaust Systemwant to go back to standard Just TORs?Aftermarket Exhaust at Alti...Are stock pipes "chrom...Vance & Hines for the LT an...Foran ´Razorback&There are more than 50 topics! Categories : -------------------- General --------------------Lounge.Off-Topic Lounge.For our Non-English speaking Friends.Accessories.Gear & Gadgetry.Other Triumphs.Other Bikes.Classifieds.-------------------- Technical Talk --------------------Performance Mods.Exhausts.Technical Talk.Tech Vault.How to ... step by step.-------------------- Events, Flockings, Rallies and Rides --------------------Events, Flockings and Rallies.Rides - The shorts.Rides - The longs.Short Stories - Tales from the road ... (New!) Topic : Custom headers math?  Author  Post     ThunderTusk96  Set Reg. Date  :  14/03/2013 Posts  :  46 Location  :  Valdosta, GA, United States Posted : 04 Sep 2013 - 18:33   Post title : Custom headers math?   I got a hot rodding magazine and had a intresting artical on headers which included math for picking header/making headers. the math has alot to due with where intended peak torque is. This effects is by the pipe diameter. So where for the thunderbird would be the best point for peak torque. As to when i leave afganistan and go back home i intend to make a set of custom headers. here is the math they provided PPA (Primary Pipe Area)= (peak torque RPM / 88200) x 1 cylinder ci PPA= (pi) R squared (pi time radius squared) solve for radius some math done for the 1700 5000 rpm = 1.93 inch pipe 3000 rpm = 1.50 inch pipe what are other peoples thoughts where peak torque should land and what is the factory inside diameter of our headers being they are double walled?   2012 Triumph Thunderbird Storm Decated, Thunderbike Intake, Dealer's TOR's Flash Post edited by ThunderTusk96 on 05 Sep 2013 - 00:02  Author  Post     FTL40  Jupiter Reg. Date  :  13/10/2009 Posts  :  1,122 Location  :  massachusetts, United States Posted : 04 Sep 2013 - 19:10   Post title : Re: Custom headers math? (Re: ThunderTusk96)   they include any info about stepped headers?   2010 tbird 1700 silver (fastest color) BC exhaust, BC airbox removal  Author  Post     ThunderTusk96  Set Reg. Date  :  14/03/2013 Posts  :  46 Location  :  Valdosta, GA, United States Posted : 04 Sep 2013 - 19:23   Post title : Re: Custom headers math? (Re: FTL40)   they had messurements for how long of pipe to run before collector and its effect on rpms as far as stepped information i didnt see anything on this.   2012 Triumph Thunderbird Storm Decated, Thunderbike Intake, Dealer's TOR's Flash Post edited by ThunderTusk96 on 04 Sep 2013 - 19:29  Author  Post     ThunderTusk96  Set Reg. Date  :  14/03/2013 Posts  :  46 Location  :  Valdosta, GA, United States Posted : 04 Sep 2013 - 19:30   Post title : Re: Custom headers math? (Re: ThunderTusk96)   why has my orignal post been tweeked with and information disapeared? and part of formula been changed   2012 Triumph Thunderbird Storm Decated, Thunderbike Intake, Dealer's TOR's Flash  Author  Post     edbob  Chaac Reg. Date  :  04/04/2012 Posts  :  931 Location  :  United States Posted : 04 Sep 2013 - 21:05   Post title : Re: Custom headers math? (Re: ThunderTusk96)   Nice warthog! That's my favorite plane since I was a kid watching them haul ass out of the Air Guard base in Syracuse. As for the optimum RPM, I'd say about 3000. That's the speed where I find myself most often wanting to do a "roll on" on the highway to pass someone and need it the most - equates to about 70 mph indicated (about 65 true speed). A two into one design culminating underneath the bike would be really cool, by the way. If you want to make a run of them, I'd be first in line.   "You will ride eternal shiny and chrome"  Author  Post     DizzE  Thor Reg. Date  :  12/07/2010 Posts  :  3,141 Location  :  Sunnyvale, CA, United States Posted : 04 Sep 2013 - 21:09   Post title : Re: Custom headers math? (Re: edbob)   Underneath? Have you been under there lately? Barely enough room to close an umbrella, I tell you what. And as I understand it this h-pipe config is far better. Carry-on.  Author  Post     ThunderTusk96  Set Reg. Date  :  14/03/2013 Posts  :  46 Location  :  Valdosta, GA, United States Posted : 04 Sep 2013 - 23:58   Post title : Re: Custom headers math? (Re: DizzE)   i found a book with more information about this math and have ordered it will reasearch more. before building my own headers   2012 Triumph Thunderbird Storm Decated, Thunderbike Intake, Dealer's TOR's Flash  Author  Post     gdp  Set Reg. Date  :  13/03/2013 Posts  :  136 Location  :  United States Posted : 05 Sep 2013 - 02:12   Post title : Re: Custom headers math? (Re: DizzE)   ...just any h-pipe?....Like every T bird owner it seems, I want another ten to fifteen lbs of torque....but the combinations of different tunings and pipe configurations have me baffled...(no pun intended).... I want a sweeter (more) sound, more torque, and better mileage.........on the cheap, haha.....  Author  Post     ThunderTusk96  Set Reg. Date  :  14/03/2013 Posts  :  46 Location  :  Valdosta, GA, United States Posted : 28 Sep 2013 - 19:55   Post title : Re: Custom headers math? (Re: gdp)   how many people would be intrested in 1 3/4 inch headers if i got some one to build several sets.   2012 Triumph Thunderbird Storm Decated, Thunderbike Intake, Dealer's TOR's Flash  Author  Post     TBRider  Chaac Reg. Date  :  21/10/2011 Posts  :  834 Location  :  Foothills, The Mountains, United States Posted : 29 Sep 2013 - 00:46   Post title : Re: Custom headers math? (Re: ThunderTusk96)   Problem is a 1 3/4 header isn't going to help at all. You'll need to step up to 2 inch headers. That's what I run on my Thruxton and it made an additional 4 hp on the dyno. What you're trying to do is scavenge exhaust gases much faster. One quarter to half an inch isn't going to do it.    Author  Post     ThunderTusk96  Set Reg. Date  :  14/03/2013 Posts  :  46 Location  :  Valdosta, GA, United States Posted : 29 Sep 2013 - 00:49   Post title : Re: Custom headers math? (Re: TBRider)   do you think the cross pipe would make a diffrence? looking at header math it looking like 1 3/4 to 1 7/8 is where you want to be with out loosing to much torque   2012 Triumph Thunderbird Storm Decated, Thunderbike Intake, Dealer's TOR's Flash  Author  Post     ThunderTusk96  Set Reg. Date  :  14/03/2013 Posts  :  46 Location  :  Valdosta, GA, United States Posted : 29 Sep 2013 - 00:52   Post title : Re: Custom headers math? (Re: ThunderTusk96)   how did it cost to get those headers made   2012 Triumph Thunderbird Storm Decated, Thunderbike Intake, Dealer's TOR's Flash  Author  Post     TBRider  Chaac Reg. Date  :  21/10/2011 Posts  :  834 Location  :  Foothills, The Mountains, United States Posted : 29 Sep 2013 - 04:24   Post title : Re: Custom headers math? (Re: ThunderTusk96)   Forget your little math book. For the cylinder volume of the 1600/1700, you're not going to get any benefit with the diameters your calculating. The cross over pipe balances the exhaust pulse and is required without a doubt. ThunderTusk96 wrote: how did it cost to get those headers made These were made by Urbane Exhausts in the UK. Everything from the manifold outlet is 2" through to the silencers. Price wise, you don't want to know!   Post edited by TBRider on 29 Sep 2013 - 04:29  Author  Post     edbob  Chaac Reg. Date  :  04/04/2012 Posts  :  931 Location  :  United States Posted : 29 Sep 2013 - 21:32   Post title : Re: Custom headers math? (Re: TBRider)   Exhaust tuning involves a load of calculations as to the diameter and the length of pipe. I'd like to see what happens here.   "You will ride eternal shiny and chrome"

Acceptable use policy   ©thunderbird1600.com 2008 - All rights reserved.