The Sportster and Buell Motorcycle Forum - The XLFORUM®
 

Go Back   The Sportster and Buell Motorcycle Forum - The XLFORUM® > SPORTSTER MOTORCYCLE FORUM > Sportster Motorcycle General Discussion and Problems
XLF Blogs 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.

Active Threads
0 Code U1255 sputters and dies
Last Post: IXL2Relax
Posted On: 39 Minutes Ago
Replies: 24
Views: 723
0 What did you do for your sporty Today?
Last Post: Knuckles
Posted On: 41 Minutes Ago
Replies: 5,868
Views: 733,614
0 Resistor vs Copper plug wires?
Last Post: ryder rick
Posted On: 43 Minutes Ago
Replies: 6
Views: 89
0 Rear rocker cover?
Last Post: ryder rick
Posted On: 51 Minutes Ago
Replies: 20
Views: 908
0 Ran out of gas.
Last Post: Nibelungen
Posted On: 55 Minutes Ago
Replies: 151
Views: 17,343
0 Oil change 101 – Engine and Transmission oil change pics
Last Post: Hippysmack
Posted On: 1 Hour Ago
Replies: 164
Views: 562,995
14 Taking one for the team...
Last Post: quickstang87
Posted On: 1 Hour Ago
Replies: 12
Views: 492
0 Surging/lurching at low speed?
Last Post: Hippysmack
Posted On: 1 Hour Ago
Replies: 82
Views: 3,045
5 77 Ironhead custom, rear brake cable
Last Post: Slytat
Posted On: 1 Hour Ago
Replies: 0
Views: 15
0 Happy Birthday Yellow Scooter
Last Post: mick42
Posted On: 2 Hours Ago
Replies: 0
Views: 20
0 1987 883 breather bolts are different?
Last Post: John Harper
Posted On: 3 Hours Ago
Replies: 2
Views: 43
0 Does titanium exhaust exist?
Last Post: tomaso
Posted On: 3 Hours Ago
Replies: 56
Views: 1,407
0 beware of buzzards
Last Post: Hippysmack
Posted On: 3 Hours Ago
Replies: 1
Views: 43
0 ironhead wrist pin bushing size?
Last Post: brucstoudt
Posted On: 3 Hours Ago
Replies: 17
Views: 292
6 73 Sportster Starts, Runs Fine, Dies
Last Post: Island Dude
Posted On: 4 Hours Ago
Replies: 7
Views: 152
0 Anyone
Last Post: MotorPsycho9
Posted On: 4 Hours Ago
Replies: 0
Views: 38
0 My 1250 to 1275 build
Last Post: Hippysmack
Posted On: 4 Hours Ago
Replies: 48
Views: 1,704
0 08 XL1200N quick question/confirmation: 18" / 19" Rear Wheel On '08?
Last Post: sml1226
Posted On: 4 Hours Ago
Replies: 7
Views: 259
0 Official XL Forum Random Image Thread (NO NUDITY!)
Last Post: Graywolf
Posted On: 5 Hours Ago
Replies: 43,539
Views: 6,800,581
0 Lets see your off season builds
Last Post: madnss
Posted On: 5 Hours Ago
Replies: 1,304
Views: 167,522
0 Photos: King Peanut or Regular Peanut tank?
Last Post: Lone Rider
Posted On: 5 Hours Ago
Replies: 53
Views: 33,945
0 Repo S&S E Carbs ... any good?
Last Post: Scott
Posted On: 6 Hours Ago
Replies: 14
Views: 652
0 Flame's New 1989
Last Post: Flame__
Posted On: 7 Hours Ago
Replies: 555
Views: 77,793
0 Range With Carby 4.5 Gal Tank
Last Post: VaFish
Posted On: 7 Hours Ago
Replies: 100
Views: 43,196
0 In a crash: Lucky to be alive
Last Post: iNSaNeSHaNe
Posted On: 7 Hours Ago
Replies: 55
Views: 1,435
0 Best Bang for your Buck Exhaust option?
Last Post: priell3
Posted On: 7 Hours Ago
Replies: 14
Views: 364
0 Was your 1st bike a Sportster?
Last Post: alaxjordan0
Posted On: 7 Hours Ago
Replies: 992
Views: 223,890
0 Chasing my tale with electrical issues
Last Post: paulc
Posted On: 8 Hours Ago
Replies: 24
Views: 571
0 Brembo Front Brake Conv.
Last Post: SuicideCharley
Posted On: 8 Hours Ago
Replies: 0
Views: 45
More...
Members Birthdays
wallylach (68), cob (65), decman (63), djhannu (57), Vaughn, irishhog (50), dangjalopy (46), earthoverdrive (41), edman87k5 (40), 79iron (37), mr_anti_chrome, jessman14241 (34), jakevandike (28)
Sponsored Links
Reply
 
Share Thread Tools Display Modes
  #101  
Old 19th June 2018
Dave L's Avatar
Dave L Dave L is offline
Land Speed Record
 
Join Date: Oct 2017
Location: North east
Posts: 746
Sportster/Buell Model: XLH 1000
Sportster/Buell Year: 1985
Sportster/Buell Model #2: XLH 1000
Sportster/Buell Year #2: 1985
Other Motorcycle Model: Kawasaki Vulcan 700
Other Motorcycle Year: 1985
Reputation: 207037
Dave L has a brilliant futureDave L has a brilliant futureDave L has a brilliant futureDave L has a brilliant futureDave L has a brilliant futureDave L has a brilliant futureDave L has a brilliant futureDave L has a brilliant futureDave L has a brilliant futureDave L has a brilliant futureDave L has a brilliant future
Default

I'm confused. Two wires go to my coil from a single pickup Dyna S. So this means both fire at the same time. One with valves closed the other with exhaust valve open. So a dual fire would fire only on closed valves alternating cylinders using a split coil. Sounds better to me.
Reply With Quote
  #102  
Old 8th November 2018
Pezed's Avatar
Pezed Pezed is offline
Biker
 
Join Date: Mar 2018
Location: Penzance, Cornwall.
Posts: 50
Sportster/Buell Model: '77' xlch
Sportster/Buell Year: 77
Reputation: 1343
Pezed has a spectacular aura aboutPezed has a spectacular aura aboutPezed has a spectacular aura aboutPezed has a spectacular aura aboutPezed has a spectacular aura aboutPezed has a spectacular aura aboutPezed has a spectacular aura aboutPezed has a spectacular aura aboutPezed has a spectacular aura aboutPezed has a spectacular aura about
Default

General piece of information, radial engines always have an odd number of cylinders. That prevents any two cylinders being in direct opposition at any moment in time. I was taught that many years ago, but have never tried to prove or disprove it as a fact.
__________________
Better a bottle in front of me than a frontal lobotomy.
Reply With Quote
  #103  
Old 8th November 2018
Folkie's Avatar
Folkie Folkie is offline
Brass Nut
 
Join Date: Feb 2005
Location: Western Weald
Posts: 45,215
Sportster/Buell Model: XL1200CB
Sportster/Buell Year: 2015
Other Motorcycle Model: CRF250L
Other Motorcycle Year: 2017
Reputation: 11879992
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

Quote:
Originally Posted by Pezed View Post
General piece of information, radial engines always have an odd number of cylinders. That prevents any two cylinders being in direct opposition at any moment in time. I was taught that many years ago, but have never tried to prove or disprove it as a fact.
According to Wikipedia:
Four stroke radials have an odd number of cylinders per row, so that a consistent every-other-piston firing order can be maintained, providing smooth operation. For example, on a five cylinder engine the firing order is 1, 3, 5, 2, 4, and back to cylinder 1. Moreover, this always leaves a one piston gap between the piston on its combustion stroke and the piston on compression. The active stroke directly helps compress the next cylinder to fire, making the motion more uniform. If an even number of cylinders were used, an equally timed firing cycle would not be feasible.
__________________
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 06:21.


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