The Sportster and Buell Motorcycle Forum - The XLFORUM®
 

Go Back   The Sportster and Buell Motorcycle Forum - The XLFORUM® > SPORTSTER MOTORCYCLE FORUM > Sportster Motorcycle Intake and Exhaust > Sportster Motorcycle Air intake, Carburetor, EFI, Fuel, and Exhaust
XLF Blogs XLF Arcade XLF Disclaimer/Privacy Statement/Terms Of Use

Sportster Motorcycle Air intake, Carburetor, EFI, Fuel, and Exhaust Problems, advice and/or how tos for Sporster and Buell motorcycle carburators, Electronic Fuel Injection (EFI), Air Intake, Fuel and Exhaust.

Active Threads
0 Hottie of the day, no nudity.
Last Post: trainman
Posted On: 3 Minutes Ago
Replies: 11,274
Views: 1,004,970
0 Screaming eagle street tuner afr?
Last Post: Tconnor2
Posted On: 5 Minutes Ago
Replies: 0
Views: 4
0 MPG HONESTLY, what do you get?
Last Post: SLW210
Posted On: 8 Minutes Ago
Replies: 570
Views: 72,220
0 what brake master cylinder can I use?
Last Post: just1pepsi
Posted On: 23 Minutes Ago
Replies: 3
Views: 136
0 super b overflow
Last Post: Iron Mike
Posted On: 39 Minutes Ago
Replies: 9
Views: 230
0 TC88a DIY Power adapter ?
Last Post: jon1966uk
Posted On: 47 Minutes Ago
Replies: 11
Views: 264
0 Poll....what do you wear on your hands?
Last Post: skypeace
Posted On: 58 Minutes Ago
Replies: 217
Views: 28,123
0 Need help with breakin miles
Last Post: seajay
Posted On: 1 Hour Ago
Replies: 6
Views: 132
0 Post your paint questions here!!!!!
Last Post: SLW210
Posted On: 1 Hour Ago
Replies: 299
Views: 67,140
0 2019 East Coast Meet and Greet
Last Post: ParrotHead
Posted On: 1 Hour Ago
Replies: 261
Views: 30,659
0 What did you do for your sporty Today?
Last Post: ParrotHead
Posted On: 1 Hour Ago
Replies: 5,931
Views: 744,641
0 The chicken or the egg (bent pushrod)
Last Post: Disturbediwv
Posted On: 1 Hour Ago
Replies: 13
Views: 487
0 New Lithium Battery, Lights Go Out
Last Post: Turbo Sporty 48
Posted On: 2 Hours Ago
Replies: 26
Views: 700
0 1972 XLCH brake help
Last Post: Imaginearat
Posted On: 2 Hours Ago
Replies: 4
Views: 92
0 New LED headlight bulb. Highbeam aim wrong.
Last Post: xena
Posted On: 2 Hours Ago
Replies: 15
Views: 325
0 mystery leak
Last Post: IronMick
Posted On: 3 Hours Ago
Replies: 4
Views: 178
0 Poll: What weight fork oil do you use?
Last Post: jazzman
Posted On: 3 Hours Ago
Replies: 111
Views: 31,973
0 Throttle..clunk..... ..Off throttle..clunk?
Last Post: 2cvandy
Posted On: 3 Hours Ago
Replies: 50
Views: 6,037
0 Hi from France
Last Post: harley506d
Posted On: 3 Hours Ago
Replies: 27
Views: 1,775
0 Roads I'd like to ride.
Last Post: Stairman
Posted On: 3 Hours Ago
Replies: 1,747
Views: 146,655
0 Official XL Forum Random Image Thread (NO NUDITY!)
Last Post: Stairman
Posted On: 3 Hours Ago
Replies: 43,774
Views: 6,849,025
0 Oil pump Iron 1000 1979 bizarre.....
Last Post: jlv
Posted On: 3 Hours Ago
Replies: 9
Views: 315
0 Clutch ramp outer
Last Post: 83ironman
Posted On: 4 Hours Ago
Replies: 5
Views: 150
0 Xl 1000 1979
Last Post: jlv
Posted On: 4 Hours Ago
Replies: 0
Views: 54
0 Why I don't have a HID Headlight Poll
Last Post: SLW210
Posted On: 4 Hours Ago
Replies: 138
Views: 37,384
0 Headlight Modulator
Last Post: sportsterpaul
Posted On: 4 Hours Ago
Replies: 110
Views: 22,694
0 Valve to piston contact
Last Post: rejeanprimeau
Posted On: 4 Hours Ago
Replies: 33
Views: 981
0 Was your 1st bike a Sportster?
Last Post: alaxjordan0
Posted On: 4 Hours Ago
Replies: 1,005
Views: 225,859
0 New XLH Owner
Last Post: Stairman
Posted On: 4 Hours Ago
Replies: 9
Views: 122
0 Newbie
Last Post: Folkie
Posted On: 5 Hours Ago
Replies: 15
Views: 128
More...
Members Birthdays
rider1951 (68), harveyb (67), 883RRR (65), schnucki (60), sportxl (53), gvd883r (49), ambulldogg (41), Teejay, silversporty86 (33)
Sponsored Links
Reply
 
Share Thread Tools Display Modes
  #11  
Old 19th February 2019
Segway's Avatar
Segway Segway is offline
Biker
 
Join Date: Feb 2015
Location: Oklahoma
Posts: 38
Sportster/Buell Model: XL1200C
Sportster/Buell Year: 2006
Other Motorcycle Model: honda magna
Other Motorcycle Year: 1985
Reputation: 400
Segway is on a distinguished roadSegway is on a distinguished roadSegway is on a distinguished roadSegway is on a distinguished roadSegway is on a distinguished road
Default

Thanks, Aaron or possibly Dan(I'm not sure which one you are, sorry), for explaining that so in depth. I knew that the power band could be manipulated with tubing diameter and length but I didn't realize to what extent. Now I want to dig into exhaust science that much more. Do have any suggested literature? Oh and also does anyone know if the defender starts with 15/8 or 13/4? I'd like to try to replicate it's performance as closely as possible.
Reply With Quote
  #12  
Old 19th February 2019
rocketmangb's Avatar
rocketmangb rocketmangb is offline
XL FORUM TEAM MEMBER
 
Join Date: Jan 2008
Location: So Cal
Posts: 20,899
Sportster/Buell Model: XL1200C
Sportster/Buell Year: 2006
Sportster/Buell Model #2: XL1200C
Sportster/Buell Year #2: 2006
Other Motorcycle Model: 48 "Totalled" By a Douche
Other Motorcycle Year: 2012
Reputation: 3656358
rocketmangb has a reputation beyond reputerocketmangb has a reputation beyond reputerocketmangb has a reputation beyond reputerocketmangb has a reputation beyond reputerocketmangb has a reputation beyond reputerocketmangb has a reputation beyond reputerocketmangb has a reputation beyond reputerocketmangb has a reputation beyond reputerocketmangb has a reputation beyond reputerocketmangb has a reputation beyond reputerocketmangb has a reputation beyond repute
Default

I have a Defender pipe in the garage,I will take some pix and measurements tonight.
I also have a guy will be working on a Defender knock off.
__________________
Thy Sportster Come
It Shall Be Done
On Earth as it is on Salt
2006 Sportster XL1250C
Hammer Sledge Heads 1.98X1.61 Valves
Hammer 600 Cams
Big Ass CP/Hammer Pistons
Mikuni HSR 45 /Hammer Billet Manifold (Now HSR 48)
Jetted 27.5 slow,182.5 Main
97 Needle,Clip posistion 3
Hurricane Flow 3" offset AC,Rocketman Mod
Daytona Twin Tec TC88A,Rico Scarecrow Map
Sumax Thundervolt plug wires,NGK DCPR8EIX spark plugs. Gapped .040 and Indexed
Cycle Electric Stator and Regulator
Alto Carbonite Clutch
Royal Purple 20W50 MC Primary oil
Patriot Defender Pipe
Royal Purple 20W50 MC Engine Oil
Napa 7148 oil filter
Max Power, 111.47
Max Torque, 84.39
Best 1/4 Mile ET to date 11.85
Best 1/4 Speed to date 115.14
Build by Jester Motorwerkz West
Reply With Quote
  #13  
Old 19th February 2019
60Gunner's Avatar
60Gunner 60Gunner is offline
Chief Opinion Expert
 
Join Date: Sep 2017
Location: United States
Posts: 943
Sportster/Buell Model: 1200/1250C
Sportster/Buell Year: 05
Reputation: 1198478
60Gunner has a reputation beyond repute60Gunner has a reputation beyond repute60Gunner has a reputation beyond repute60Gunner has a reputation beyond repute60Gunner has a reputation beyond repute60Gunner has a reputation beyond repute60Gunner has a reputation beyond repute60Gunner has a reputation beyond repute60Gunner has a reputation beyond repute60Gunner has a reputation beyond repute60Gunner has a reputation beyond repute
Default

And to be fair, my comment about the PD falling on it's face at lower rpms was a bit of a stretch. It's about a good a compromise as there is with maybe a little too much emphasis up top. Its made for max numbers. I think maybe a little more in the low to mid would be more preferable to a lot of street bikes. But that's just my humble unprofessional opinion. Not that it's really bad there.
I considered the pro street Basani makes with 2 steps instead of 1 but wasn't sure how it would do and the side by side pipes as opposed to the traditional top and bottom were a no go for me as well.
__________________
05 1200/1250C/Hammer 570 Cams
TC88A/DCPR8EIX indexed/Taylor Pro 8mm
S&S Premium Lifters/V&H Straightshots w/HP+baffles
45/185/N65C/Dragtron II AC K&N filter
VR1 20W50/SpectroSTL 75W140

Reply With Quote
Reply

Bookmarks


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



Sponsored Links
All times are GMT +1. The time now is 15:00.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
XL Forum® - Linson Media LLC