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 Spectro STL 75W140
Last Post: Tomcatt
Posted On: 2 Hours Ago
Replies: 1
Views: 63
0 How do you upshift?
Last Post: 1HD4CJM1X4K
Posted On: 3 Hours Ago
Replies: 267
Views: 42,533
5 Why Are You Still Married?
Last Post: oupa
Posted On: 3 Hours Ago
Replies: 154
Views: 19,549
0 This week on Craig's list
Last Post: spacecoast
Posted On: 3 Hours Ago
Replies: 3,841
Views: 433,316
0 Peanut, 3.3 or 4.5 gas tank ?
Last Post: 83XLX
Posted On: 4 Hours Ago
Replies: 222
Views: 62,040
0 Crusty's Travels
Last Post: spoon
Posted On: 4 Hours Ago
Replies: 2,023
Views: 244,424
0 The Multi-tool thread
Last Post: rokytnji
Posted On: 4 Hours Ago
Replies: 31
Views: 4,265
0 70 xlch tuneup and intake manifold
Last Post: gpydeski
Posted On: 4 Hours Ago
Replies: 17
Views: 466
0 900 dual carb front head
Last Post: Scott
Posted On: 5 Hours Ago
Replies: 28
Views: 1,079
0 Maryland area Ironhead Gathering
Last Post: doodah man
Posted On: 5 Hours Ago
Replies: 11
Views: 296
0 S.Y.B. Next to a waterfall.....
Last Post: Lone Rider
Posted On: 5 Hours Ago
Replies: 1
Views: 43
0 new heads
Last Post: gpydeski
Posted On: 5 Hours Ago
Replies: 8
Views: 401
0 Runs rough on highway.
Last Post: 60Gunner
Posted On: 6 Hours Ago
Replies: 5
Views: 130
0 How many when You park.... (Leave Your Bike In Gear)
Last Post: boomerguy
Posted On: 6 Hours Ago
Replies: 365
Views: 48,169
0 Hottie of the day, no nudity.
Last Post: trainman
Posted On: 6 Hours Ago
Replies: 10,337
Views: 908,548
0 hi from anchorage AK
Last Post: Veeflys
Posted On: 6 Hours Ago
Replies: 10
Views: 118
0 What did you do for your sporty Today?
Last Post: boomerguy
Posted On: 6 Hours Ago
Replies: 5,748
Views: 713,242
0 Throttle..clunk..... ..Off throttle..clunk?
Last Post: BKB
Posted On: 6 Hours Ago
Replies: 29
Views: 4,792
0 WTF Happened
Last Post: rokytnji
Posted On: 6 Hours Ago
Replies: 960
Views: 164,999
0 Sportster in custom softail frame
Last Post: NLXL
Posted On: 7 Hours Ago
Replies: 35
Views: 970
0 Project Strociek
Last Post: Iron Mike
Posted On: 7 Hours Ago
Replies: 38
Views: 2,001
0 Mainshaft bearing
Last Post: Four Speed
Posted On: 7 Hours Ago
Replies: 7
Views: 172
3 Wtb, Wts, Wtt, Wtg (Ironhead)
Last Post: IronMick
Posted On: 7 Hours Ago
Replies: 116
Views: 222,176
0 2 into 1 exhaust build
Last Post: 60Gunner
Posted On: 7 Hours Ago
Replies: 38
Views: 7,267
0 Show your favorite pic of your bike. just one
Last Post: NLXL
Posted On: 7 Hours Ago
Replies: 4,705
Views: 1,783,647
0 Floppy kickstand spring issue, 1991 model
Last Post: rejeanprimeau
Posted On: 7 Hours Ago
Replies: 13
Views: 163
0 Official XL Forum Random Image Thread (NO NUDITY!)
Last Post: Graywolf
Posted On: 8 Hours Ago
Replies: 43,204
Views: 6,743,799
5 Summer time heat
Last Post: ccmman
Posted On: 8 Hours Ago
Replies: 16
Views: 507
0 What brand synthetic oil do you use
Last Post: Four Speed
Posted On: 9 Hours Ago
Replies: 413
Views: 102,218
0 Hot Rods, Rat Rods, and Customs.
Last Post: Graywolf
Posted On: 11 Hours Ago
Replies: 3,172
Views: 352,709
More...
Members Birthdays
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: 45,071
Sportster/Buell Model: XL1200CB
Sportster/Buell Year: 2015
Other Motorcycle Model: CRF250L
Other Motorcycle Year: 2017
Reputation: 11396267
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 07:36.


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