The Sportster and Buell Motorcycle Forum - The XLFORUM®
 

Go Back   The Sportster and Buell Motorcycle Forum - The XLFORUM® > VENDORS > Hammer Performance
XLF Blogs XLF Arcade XLF Disclaimer/Privacy Statement/Terms Of Use

Active Threads
10 howdy from australia
Last Post: Toejam503
Posted On: 1 Minute Ago
Replies: 15
Views: 168
0 Hello from mid Missouri
Last Post: Toejam503
Posted On: 3 Minutes Ago
Replies: 15
Views: 1,148
0 LED Brake light, surprising problem
Last Post: deuce460
Posted On: 5 Minutes Ago
Replies: 3
Views: 9
0 Throttle Cable Adjustment Question
Last Post: deuce460
Posted On: 6 Minutes Ago
Replies: 35
Views: 579
0 Sportster in custom softail frame
Last Post: deuce460
Posted On: 15 Minutes Ago
Replies: 50
Views: 1,934
3 Wtb, Wts, Wtt, Wtg (Evos)
Last Post: 1mellom8
Posted On: 21 Minutes Ago
Replies: 19
Views: 71,990
0 Some oil issues!
Last Post: Hippysmack
Posted On: 1 Hour Ago
Replies: 4
Views: 105
0 2019 East Coast Meet and Greet
Last Post: debster
Posted On: 1 Hour Ago
Replies: 315
Views: 35,219
0 Do Loud Pipes in fact save lives?
Last Post: Clevspeed
Posted On: 1 Hour Ago
Replies: 2,482
Views: 258,591
0 Jockey Shifter on a Right Side Shift Bike?
Last Post: dodgetrucken
Posted On: 2 Hours Ago
Replies: 43
Views: 15,108
0 Hottie of the day, no nudity.
Last Post: trainman
Posted On: 2 Hours Ago
Replies: 11,700
Views: 1,051,375
0 Manifold -CYLYNDER head connection
Last Post: shooterj2003
Posted On: 2 Hours Ago
Replies: 0
Views: 29
0 XR front rocker box needed
Last Post: Scott
Posted On: 2 Hours Ago
Replies: 0
Views: 22
3 Wtb, Wts, Wtt, Wtg (Ironhead)
Last Post: Scott
Posted On: 2 Hours Ago
Replies: 112
Views: 229,548
0 Parrothead and the 2019 Iron Butt Rally
Last Post: shanneba
Posted On: 2 Hours Ago
Replies: 24
Views: 748
0 You asked for it! "The Tess' Coffee Thread"
Last Post: rokytnji
Posted On: 2 Hours Ago
Replies: 10,730
Views: 852,633
0 Selling my Sporty...
Last Post: Mr. Rossi
Posted On: 2 Hours Ago
Replies: 0
Views: 30
0 Crusty's Travels
Last Post: Crusty
Posted On: 2 Hours Ago
Replies: 2,209
Views: 272,060
0 Ironhead Survey: Most desired bike
Last Post: rokytnji
Posted On: 2 Hours Ago
Replies: 73
Views: 11,660
10 New to the HD world, Ironhrad vs Shovel, whats the diff
Last Post: motorend
Posted On: 2 Hours Ago
Replies: 7
Views: 228
0 I guess I'm back
Last Post: rokytnji
Posted On: 3 Hours Ago
Replies: 20
Views: 392
0 Poll for the legalization of cannabis
Last Post: jcn59
Posted On: 3 Hours Ago
Replies: 495
Views: 65,155
0 Should I buy a Sportster??
Last Post: Hopalong48
Posted On: 3 Hours Ago
Replies: 515
Views: 187,580
0 Mystery drip off rear brake cylinder
Last Post: BluesandBike
Posted On: 3 Hours Ago
Replies: 2
Views: 35
0 ***DK CUSTOM-4 New LIMITED QUANTITY Pegs-10% SAVINGS ON ALL PEGS***
Last Post: DK Custom
Posted On: 3 Hours Ago
Replies: 0
Views: 17
0 .551 Cams in an EFI 1200
Last Post: Tomcatt
Posted On: 3 Hours Ago
Replies: 48
Views: 1,790
0 How many miles are on your sporty?
Last Post: SLW210
Posted On: 3 Hours Ago
Replies: 1,169
Views: 280,575
0 1991 frame/engine original ground locations
Last Post: John Harper
Posted On: 3 Hours Ago
Replies: 4
Views: 85
0 Born Free bike show
Last Post: smokey 2
Posted On: 4 Hours Ago
Replies: 0
Views: 48
0 Rocksett
Last Post: bustert
Posted On: 4 Hours Ago
Replies: 1
Views: 72
More...
Members Birthdays
Sponsored Links
Reply
 
Share Thread Tools Display Modes
  #11  
Old 19th January 2015
davesz1r's Avatar
davesz1r davesz1r is offline
Harley Engineer
 
Join Date: Sep 2013
Location: Escondido Ca.
Posts: 338
Sportster/Buell Model: xlh 883 hugger
Sportster/Buell Year: 1997
Other Motorcycle Model: kz1000 z1r
Other Motorcycle Year: 1978
Reputation: 60703
davesz1r is a splendid one to beholddavesz1r is a splendid one to beholddavesz1r is a splendid one to beholddavesz1r is a splendid one to beholddavesz1r is a splendid one to beholddavesz1r is a splendid one to beholddavesz1r is a splendid one to beholddavesz1r is a splendid one to beholddavesz1r is a splendid one to beholddavesz1r is a splendid one to beholddavesz1r is a splendid one to behold
Default

Aaron, I recently switched from n4 cams to Impact 560's. My bike seems to rev higher now but seems a little lazy getting there. I went a shade slower in the eighth but I only got a few runs in so I am still sneaking up on the tune. My cranking compression is 185 lbs. I am running stock xb heads with a .030" squish which calculates to 9.73:1 static. Is this too low? Most of the builds I have seen with these cams are at 10.5:1. I am gonna run at the track this weekend and hopefully get in plenty of runs to dial it in. oddly enough the thing seems to want less fuel and I thought more overlap would lean it out but I picked up 3 mph going from a 170 to a 162.5 main. Any thoughts? Thanks, Dave.
__________________
1275 cc 10.54:1 cr se heads .560 cams hsr42 dyna 2000p patriot defender 11.63@ 115 1/4
Reply With Quote
  #12  
Old 19th January 2015
aswracing's Avatar
aswracing aswracing is offline
A Million Facts & Figures
 
Join Date: Jan 2005
Location: Famous Potatoes
Posts: 10,014
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

Quote:
Originally Posted by madnss View Post
What's the number to punch in for the piston dome on the 30° domed pistons?
OK, so we have 30 degree 1250 pistons in the following dome sizes:
  • -1.3cc
  • .35cc
  • 9.7cc
  • 11.35cc
  • 15.35cc
  • 19.35cc (yours)
  • 27.35cc
__________________
Click Here to Contact Me

Reply With Quote
  #13  
Old 19th January 2015
aswracing's Avatar
aswracing aswracing is offline
A Million Facts & Figures
 
Join Date: Jan 2005
Location: Famous Potatoes
Posts: 10,014
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

Quote:
Originally Posted by Fe Long View Post
How close does the calculator's effective compression ratio match up with the observed PSI being read from a compression tester when using a Gamma Factor in the 1.35 - 1.4 range for the CR's exponent?

At your elevation you probably would use an base atmospheric pressure of 14.5? maybe?

I was curious as to the correlation and comparrisons between similar ratios but working in different setups.

Thank you;
Aw geez, you're really going to make me go look up the formula I used?

Ok ... just a minute ... here you go ... the program uses 1.2 and 14.7
Reply With Quote
  #14  
Old 19th January 2015
aswracing's Avatar
aswracing aswracing is offline
A Million Facts & Figures
 
Join Date: Jan 2005
Location: Famous Potatoes
Posts: 10,014
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

Quote:
Originally Posted by davesz1r View Post
Aaron, I recently switched from n4 cams to Impact 560's. My bike seems to rev higher now but seems a little lazy getting there. I went a shade slower in the eighth but I only got a few runs in so I am still sneaking up on the tune. My cranking compression is 185 lbs. I am running stock xb heads with a .030" squish which calculates to 9.73:1 static. Is this too low? Most of the builds I have seen with these cams are at 10.5:1. I am gonna run at the track this weekend and hopefully get in plenty of runs to dial it in. oddly enough the thing seems to want less fuel and I thought more overlap would lean it out but I picked up 3 mph going from a 170 to a 162.5 main. Any thoughts? Thanks, Dave.
Yeah, 9.73 static only gives 8.6 corrected & 180psi. That's certainly not pushing things. There are a lot of dynamic things going on with a bike that's moving at speed, don't argue with the time slip is my advice.
Reply With Quote
  #15  
Old 20th January 2015
Fe Long's Avatar
Fe Long Fe Long is offline
Harley Engineer
 
Join Date: Jun 2014
Posts: 301
Sportster/Buell Model: XLH
Sportster/Buell Year: 1979
Sportster/Buell Model #2: XLH - Hybrid upgrade
Sportster/Buell Year #2: 1979
Reputation: 60807
Fe Long is a splendid one to beholdFe Long is a splendid one to beholdFe Long is a splendid one to beholdFe Long is a splendid one to beholdFe Long is a splendid one to beholdFe Long is a splendid one to beholdFe Long is a splendid one to beholdFe Long is a splendid one to beholdFe Long is a splendid one to beholdFe Long is a splendid one to beholdFe Long is a splendid one to behold
Default

Quote:
Originally Posted by aswracing View Post
Aw geez, you're really going to make me go look up the formula I used?

Ok ... just a minute ... here you go ... the program uses 1.2 and 14.7
Thank you Aaron, those numbers really help to explain the results I was getting - very much appreciated.
Reply With Quote
  #16  
Old 20th January 2015
rocketmangb's Avatar
rocketmangb rocketmangb is offline
XL FORUM TEAM MEMBER
 
Join Date: Jan 2008
Location: So Cal
Posts: 20,960
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: 3656817
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 assume those dome volumes take the valve pockets in to consideration so those are net numbers ?
__________________
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
  #17  
Old 19th February 2015
davesz1r's Avatar
davesz1r davesz1r is offline
Harley Engineer
 
Join Date: Sep 2013
Location: Escondido Ca.
Posts: 338
Sportster/Buell Model: xlh 883 hugger
Sportster/Buell Year: 1997
Other Motorcycle Model: kz1000 z1r
Other Motorcycle Year: 1978
Reputation: 60703
davesz1r is a splendid one to beholddavesz1r is a splendid one to beholddavesz1r is a splendid one to beholddavesz1r is a splendid one to beholddavesz1r is a splendid one to beholddavesz1r is a splendid one to beholddavesz1r is a splendid one to beholddavesz1r is a splendid one to beholddavesz1r is a splendid one to beholddavesz1r is a splendid one to beholddavesz1r is a splendid one to behold
Default

Thanks Aaron, I ordered one of your 1250 blem kits yesterday and I already have a UPS notice that it's ready to ship! You guys rock!!!
Reply With Quote
  #18  
Old 20th February 2015
aswracing's Avatar
aswracing aswracing is offline
A Million Facts & Figures
 
Join Date: Jan 2005
Location: Famous Potatoes
Posts: 10,014
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

Quote:
Originally Posted by davesz1r View Post
Thanks Aaron, I ordered one of your 1250 blem kits yesterday and I already have a UPS notice that it's ready to ship! You guys rock!!!
Thanks for your business Dave, we sincerely appreciate it.
Reply With Quote
Sponsored Links
  #19  
Old 20th February 2015
rocketmangb's Avatar
rocketmangb rocketmangb is offline
XL FORUM TEAM MEMBER
 
Join Date: Jan 2008
Location: So Cal
Posts: 20,960
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: 3656817
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

Well I came up with 25.9 CC domes with no sealer above the second ring.

Reply With Quote
  #20  
Old 23rd March 2015
davesz1r's Avatar
davesz1r davesz1r is offline
Harley Engineer
 
Join Date: Sep 2013
Location: Escondido Ca.
Posts: 338
Sportster/Buell Model: xlh 883 hugger
Sportster/Buell Year: 1997
Other Motorcycle Model: kz1000 z1r
Other Motorcycle Year: 1978
Reputation: 60703
davesz1r is a splendid one to beholddavesz1r is a splendid one to beholddavesz1r is a splendid one to beholddavesz1r is a splendid one to beholddavesz1r is a splendid one to beholddavesz1r is a splendid one to beholddavesz1r is a splendid one to beholddavesz1r is a splendid one to beholddavesz1r is a splendid one to beholddavesz1r is a splendid one to beholddavesz1r is a splendid one to behold
Default

Quote:
Originally Posted by davesz1r View Post
Aaron, I recently switched from n4 cams to Impact 560's. My bike seems to rev higher now but seems a little lazy getting there. I went a shade slower in the eighth but I only got a few runs in so I am still sneaking up on the tune. My cranking compression is 185 lbs. I am running stock xb heads with a .030" squish which calculates to 9.73:1 static. Is this too low? Most of the builds I have seen with these cams are at 10.5:1. I am gonna run at the track this weekend and hopefully get in plenty of runs to dial it in. oddly enough the thing seems to want less fuel and I thought more overlap would lean it out but I picked up 3 mph going from a 170 to a 162.5 main. Any thoughts? Thanks, Dave.
Ok, Hammer 1250 kit installed and broke in. front = 200 lbs. rear = 210 lbs. 7.506 1/8 mile et at 94.871 mph! Hell yeah! Just need a better rider.
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 18:44.


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