The Sportster and Buell Motorcycle Forum DK Customs  

Go Back   The Sportster and Buell Motorcycle Forum > SPORTSTER MOTORCYCLE ZONE > Sportster Motorcycle General Discussion and Problems
XLF Gallery XLF Classifieds XLF Blogs XLF Shout XLF Arcade XLF Disclaimer/Privacy Statement/Terms Of Use

Sportster Motorcycle General Discussion and Problems For discussing problems about your Sportster motorcycle that don't fit anywhere else.

Members Birthdays
seajay, Hugh Betcha (68), jimhd89 (65), JayFL459 (65), Big Al (58), dakota_dj (57), 10walt (55), kiltbill (55), timsvalk (54), horsewriter (49), Benetampa (37)
CV Performance
Burly
DK Customs
Motor Stage

Ironworks Magazine
Reply
 
Share Thread Tools Display Modes
  #1  
Old 25th November 2004
sportymark's Avatar
sportymark sportymark is offline
Chief Master Mechanic
 
Join Date: Nov 2004
Location: Kent, England
Posts: 475
Sportster/Buell Model: XL1200R Roadster
Sportster/Buell Year: 2004
Other Motorcycle Model: Yamaha XJR1300
Other Motorcycle Year: 2003
Reputation: 22
sportymark is an unknown quantity at this point
Default Power Output

For those of you interested in thse things, I finally had my 04 1200 Roadster dyno'd today. The results were: 80.5 BHP and 73.9 FT torque. This is with the following "bolt in" mods: SE Mufflers (80424-04), SE Air Cleaner (29042-04), SE Mikuni Flat-Slide Carb (27454-01), SE Ignition Module (31785-04) and SE Cam Kit (25197-04). The sad thing is I was pleased with this result, bearing in mind I was looking at around 147 BHP for my Honda Blackbird last year! The interesting thing on the dyno was the way the speedometer (and dyno) read at around 140mph at max power, I don't know if I could get near that on the road as the handling is too scary around 120!
__________________
1200RSC - Roadster Sport Custom (Roadster Base, Sport suspension, SE Stage 2 engine and Custom bodywork)

"This man is depriving a village somewhere of an idiot"!
Reply With Quote
  #2  
Old 25th November 2004
aka_Matt's Avatar
aka_Matt aka_Matt is offline
Chief Harley Engineer
 
Join Date: Nov 2004
Location: NY
Posts: 527
Sportster/Buell Model: xl1200c
Sportster/Buell Year: '04
Reputation: 203
aka_Matt is on a distinguished roadaka_Matt is on a distinguished roadaka_Matt is on a distinguished road
Default

at what RPM's? can u post the graph? how much did u lose down low with those huge cams?
__________________
'04 HD XL1200C... Blue/Orange flames, Bobtail rear fender, Custom front fender, 6 spoke front wheel, Chrome everything... Rinehart 2-1, Mid-Controls, Deuce Wheel w/ 160/70x17, Ness BS, 74hp/85tq... FOR SALE
Reply With Quote
  #3  
Old 25th November 2004
barry1967's Avatar
barry1967 barry1967 is offline
Senior Custom Bike Builder
 
Join Date: Nov 2004
Location: Rhode Island
Posts: 2,654
Other Motorcycle Model: 2005 FXD Chopper Blue
Reputation: 10
barry1967 is an unknown quantity at this point
Default

My 04 with just SE ac kit, D&D slip-ons and a jetted carb made 74.51Hp at 6K and 77.04ftlbs at 4300. I would guess that would be pretty standard for most 1200's give or take 1 or 2 hp/tq either way depending on pipes. It looks like he lost about 3ft lbs with the SE .551's. Just my 2 cents if it's worth anything.
__________________
Stage 1
Metz 880s
V&H pipe
95 inch and more very soon.
Reply With Quote
  #4  
Old 26th November 2004
gwcrim's Avatar
gwcrim gwcrim is offline
Senior Chief Know It All 3rd Class
 
Join Date: Nov 2004
Location: Steubenville, Ohio
Posts: 1,794
Sportster/Buell Model: 1200 Sport
Sportster/Buell Year: 1999
Sportster/Buell Model #2: Cafe el Roadkill
Sportster/Buell Year #2: 199?
Other Motorcycle Model: KX520
Other Motorcycle Year: 1989
gwcrim has disabled reputation
Default

Those numbers are surprisingly low. My 1200 Sport with N8 cams made 78 HP. I wonder what a different exhaust might net.

140 on the dyno doesnt' take wind drag into effect. None the less, I've had my 1200 Sport to 141 at an ECTA meet. But that was with some aerodynamic tricks.
__________________
~Crim~

My photo gallery: http://xlforum.net/photopost/showgallery.php/cat/500/ppuser/184]
Reply With Quote
  #5  
Old 26th November 2004
sportymark's Avatar
sportymark sportymark is offline
Chief Master Mechanic
 
Join Date: Nov 2004
Location: Kent, England
Posts: 475
Sportster/Buell Model: XL1200R Roadster
Sportster/Buell Year: 2004
Other Motorcycle Model: Yamaha XJR1300
Other Motorcycle Year: 2003
Reputation: 22
sportymark is an unknown quantity at this point
Default

Cant't comment on the precise gain because I didn't dyno it from standard. The parts fitted are all from the SE catalogue. I have a reluctance to fit other makes because the dealer that has done the work will get it back in part exchange next year. Max power was at 6500 rpm although it did rev out to 7000rpm. I will contact Bert to see if he can post the readouts as I don't have a scanner. All the run proves is what a typical Roadster with these mods puts out. The bike has only done 1200 miles so maybe it's still a bit tight.
Reply With Quote
Know Thy Hog

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Rain Caused Engine Power Loss dneyer Sportster Motorcycle General Discussion and Problems 23 27th April 2005 21:22
cut the baffles....not good XL-DecentGlide Sportster Motorcycle General Discussion and Problems 8 5th April 2005 00:59
04 05 air cleaners Milazzo Rubber Mount Sportster Motorcycle Talk (2004-2006) 53 30th March 2005 13:51
Power Graph sportymark Rubber Mount Sportster Motorcycle Talk (2004-2006) 2 10th December 2004 09:10


Custom Search

All times are GMT +1. The time now is 08:20.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
XL Forum - Linson Media LLC