The Sportster and Buell Motorcycle Forum - The XLFORUM®
 

Go Back   The Sportster and Buell Motorcycle Forum - The XLFORUM® > SPORTSTER MOTORCYCLE & BUELL MOTORCYCLE FORUM - GENERAL DISCUSSION > DYNO Charts and Result
XLF Blogs XLF Arcade XLF Disclaimer/Privacy Statement/Terms Of Use

DYNO Charts and Result Post your dyno charts and results here.

Active Threads
0 Efi and carbs
Last Post: Folkie
Posted On: 3 Minutes Ago
Replies: 37
Views: 642
0 Parrothead and the 2019 Iron Butt Rally
Last Post: dieselvette
Posted On: 16 Minutes Ago
Replies: 66
Views: 2,899
0 surges and/or hunting on 1200 EFI's
Last Post: Clevspeed
Posted On: 18 Minutes Ago
Replies: 99
Views: 26,775
0 2019 East Coast Meet and Greet
Last Post: mikeLI_77
Posted On: 22 Minutes Ago
Replies: 360
Views: 36,930
0 Could this be true?
Last Post: xena
Posted On: 35 Minutes Ago
Replies: 4
Views: 68
0 Mandatory Motorcycle Inspections
Last Post: NLXL
Posted On: 50 Minutes Ago
Replies: 159
Views: 22,245
0 Broke my drive belt (Stay With The Belt Or Do A Chain Conversion?)
Last Post: motorend
Posted On: 1 Hour Ago
Replies: 70
Views: 19,766
0 Hi
Last Post: Folkie
Posted On: 1 Hour Ago
Replies: 10
Views: 53
0 Crusty's Travels
Last Post: Crusty
Posted On: 2 Hours Ago
Replies: 2,233
Views: 277,766
0 Official XL Forum Random Image Thread (NO NUDITY!)
Last Post: Stairman
Posted On: 2 Hours Ago
Replies: 44,124
Views: 6,910,689
0 Clutch Spring plate poll
Last Post: xena
Posted On: 2 Hours Ago
Replies: 304
Views: 59,564
0 Hottie of the day, no nudity.
Last Post: Stairman
Posted On: 2 Hours Ago
Replies: 11,812
Views: 1,068,244
0 Can't get the free wiring diagram from HD
Last Post: RoadsterMike
Posted On: 2 Hours Ago
Replies: 2
Views: 64
0 Progress
Last Post: mickey t
Posted On: 3 Hours Ago
Replies: 20
Views: 497
0 touchy feely sissy bar emotions poll
Last Post: Weo
Posted On: 6 Hours Ago
Replies: 127
Views: 34,933
4 Hello from Chicago
Last Post: harley506d
Posted On: 6 Hours Ago
Replies: 8
Views: 120
0 Hi everybody!
Last Post: Hippysmack
Posted On: 6 Hours Ago
Replies: 19
Views: 209
0 Lowbrow XLR pipes
Last Post: A Seabee
Posted On: 6 Hours Ago
Replies: 4
Views: 112
0 This week on Craig's list
Last Post: cazz1000
Posted On: 7 Hours Ago
Replies: 4,142
Views: 475,491
0 Bulbs
Last Post: shooterj2003
Posted On: 7 Hours Ago
Replies: 0
Views: 30
0 45740-62 & 62A differences?
Last Post: Fridge
Posted On: 8 Hours Ago
Replies: 20
Views: 3,164
0 Need to part with my '59
Last Post: cazz1000
Posted On: 8 Hours Ago
Replies: 3
Views: 175
0 When Were You Born?
Last Post: hammer6315
Posted On: 8 Hours Ago
Replies: 331
Views: 78,823
0 Average age of the Ironhead forum users
Last Post: owlsplace
Posted On: 8 Hours Ago
Replies: 441
Views: 83,320
0 Question for RB racing exhaust guys/gals
Last Post: 883sporty03
Posted On: 9 Hours Ago
Replies: 28
Views: 546
0 Rear axle - what am I doing wrong?
Last Post: Toejam503
Posted On: 9 Hours Ago
Replies: 6
Views: 179
0 Foot peg stud not lining up with motor cut out
Last Post: Thirdbrick
Posted On: 9 Hours Ago
Replies: 4
Views: 89
1 Pics of pets and what type of animals you have
Last Post: trainman
Posted On: 9 Hours Ago
Replies: 987
Views: 210,099
0 What Petcock
Last Post: Toejam503
Posted On: 10 Hours Ago
Replies: 23
Views: 2,421
0 Which cams ?
Last Post: Cumofo
Posted On: 10 Hours Ago
Replies: 4
Views: 160
More...
Members Birthdays
richard rees (70), IRONHD1K (66), derekb (58), Hankrebel (43), CPurner (38), Vickers
Sponsored Links
Reply
 
Share Thread Tools Display Modes
  #81  
Old 18th November 2017
aswracing's Avatar
aswracing aswracing is offline
A Million Facts & Figures
 
Join Date: Jan 2005
Location: Famous Potatoes
Posts: 10,016
Sportster/Buell Model: XL883
Sportster/Buell Year: 2007
Sportster/Buell Model #2: Buell Cyclone
Sportster/Buell Year #2: 1999
Reputation: 2460218
aswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond repute
Default



2013 XL1200 Sportster owned by a valued HAMMER PERFORMANCE customer, equipped as follows.

Comments: This is effectively our 110+hp 883 conversion package as applied to a 1200, with one big difference: it still has the stock, unmodified throttle body. In our testing, a simple low-cost porting service on the stock throttle body is good for about 5 horsepower at this level. We're hoping to get our hands on it and find him some more power.
__________________
Click Here to Contact Me

Reply With Quote
Sponsored Links
  #82  
Old 6th May 2018
aswracing's Avatar
aswracing aswracing is offline
A Million Facts & Figures
 
Join Date: Jan 2005
Location: Famous Potatoes
Posts: 10,016
Sportster/Buell Model: XL883
Sportster/Buell Year: 2007
Sportster/Buell Model #2: Buell Cyclone
Sportster/Buell Year #2: 1999
Reputation: 2460218
aswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond repute
Default



1250 and 1275 conversions, done on the same bike with the same set of stock 883 heads, same Patriot exhaust, Powervision tuner, Dynojet dyno, etc.



Same 1250 & 1275 results, as compared to the same bike when it was a stock 883.
Reply With Quote
  #83  
Old 9th December 2018
aswracing's Avatar
aswracing aswracing is offline
A Million Facts & Figures
 
Join Date: Jan 2005
Location: Famous Potatoes
Posts: 10,016
Sportster/Buell Model: XL883
Sportster/Buell Year: 2007
Sportster/Buell Model #2: Buell Cyclone
Sportster/Buell Year #2: 1999
Reputation: 2460218
aswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond repute
Default



2007 XL883 equipped as follows:
  • Stock EFI 1200 heads
  • Stock original "W" cams
  • Air Hammer air cleaner (SLEDGE model)
  • Patriot exhaust
  • Dynojet Powervision tuner
  • tested on the same Dynojet 188 dynamometer

Blue: flat top 1275 kit
Red: flat top 1250 kit
Green: stock 1200 cylinders and flat top pistons

Comments: Through the bottom and middle, making the motor bigger adds a lot of torque and power. But as you go higher in rpm, the lines converge, and the big bore kit doesn't bring nearly as much to the party. Also notice how the bigger the motor, the lower the rpm at which the horsepower peaks.

That's typical of a motor that's had it's displacement increased without a corresponding increase in breathing. Making the motor bigger causes the air demand to go up. At low to mid rpm ranges, there's plenty of time to fill the cylinder, so the displacement increase brings a bunch more torque and thus power. But at high rpm, things are happening faster and faster, there's less time to fill the cylinder, and the motor becomes breathing constrained instead of displacement constrained.

So to get a big top side number with a big bore kit, you really need to do breathing mods as well (cams and/or head work).

However, for many people, the bottom to the mid range is more important anyway. So a lot of these kits get installed without cams and/or head work and the owner is perfectly happy with the results.
Reply With Quote
  #84  
Old 21st January 2019
aswracing's Avatar
aswracing aswracing is offline
A Million Facts & Figures
 
Join Date: Jan 2005
Location: Famous Potatoes
Posts: 10,016
Sportster/Buell Model: XL883
Sportster/Buell Year: 2007
Sportster/Buell Model #2: Buell Cyclone
Sportster/Buell Year #2: 1999
Reputation: 2460218
aswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond repute
Default



Today we tested the 1275 kit with the JACKHAMMER 570 Cams and got the above result.

Details: 2007 XL883 equipped as follows:
  • Stock EFI 1200 heads
  • Air Hammer air cleaner (SLEDGE model)
  • Patriot exhaust
  • Dynojet Powervision tuner
  • tested on the same Dynojet 188 dynamometer

Blue: flat top Flat Top 1275 kit and JACKHAMMER 570 Cams
Red: stock 1200 cylinders, stock 1200 flat top pistons, and stock "W" cams

These are the only changes between the two pulls, plus the EFI was remapped for each configuration.
Reply With Quote
  #85  
Old 21st January 2019
aswracing's Avatar
aswracing aswracing is offline
A Million Facts & Figures
 
Join Date: Jan 2005
Location: Famous Potatoes
Posts: 10,016
Sportster/Buell Model: XL883
Sportster/Buell Year: 2007
Sportster/Buell Model #2: Buell Cyclone
Sportster/Buell Year #2: 1999
Reputation: 2460218
aswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond repute
Default

We also tested the porting of the throttle body on this same result:



Blue is the ported throttle body
Red is the stock throttle body

This is result is pretty typical when we port a throttle body at this power level. 105ish hp is right on the cusp of where the stock throttle body starts becoming a significant restriction on the motor. Going up from here, it starts costing pretty significant power and you definitely want to address it.

Last edited by aswracing; 31st January 2019 at 15:53..
Reply With Quote
  #86  
Old 21st January 2019
Folkie's Avatar
Folkie Folkie is online now
Brass Nut
 
Join Date: Feb 2005
Location: Western Weald
Posts: 45,487
Sportster/Buell Model: XL1200CB
Sportster/Buell Year: 2015
Other Motorcycle Model: CRF250L
Other Motorcycle Year: 2017
Reputation: 12654782
Folkie has a reputation beyond reputeFolkie has a reputation beyond reputeFolkie has a reputation beyond reputeFolkie has a reputation beyond reputeFolkie has a reputation beyond reputeFolkie has a reputation beyond reputeFolkie has a reputation beyond reputeFolkie has a reputation beyond reputeFolkie has a reputation beyond reputeFolkie has a reputation beyond reputeFolkie has a reputation beyond repute
Default

Just a reminder: posts with dyno charts only; no comments or chat here please. Other posts will be deleted. Comments and questions about the dyno charts posted here can be posted in a separate thread in the Dyno Charts And Results section. Thanks.
__________________
Folkie
Super Moderator
South East England Riders



There is nothing at the end of any road better than may be found beside it. Edward Thomas (1878 - 1917)
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 13:49.


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