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

Notices

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

Active Threads
0 Quick and probably stupid question
Last Post: harley506d
Posted On: 6 Minutes Ago
Replies: 23
Views: 375
0 Not such a bargain after all...
Last Post: riverdog
Posted On: 27 Minutes Ago
Replies: 7
Views: 510
0 Official XL Forum Random Image Thread (NO NUDITY!)
Last Post: rubine
Posted On: 27 Minutes Ago
Replies: 42,015
Views: 6,503,222
0 Range With EFI 4.5 Gal Tank
Last Post: SLW210
Posted On: 47 Minutes Ago
Replies: 144
Views: 53,872
4 What is the best CCW? Glock? S&W? Sig?
Last Post: jharback
Posted On: 1 Hour Ago
Replies: 4
Views: 111
0 Lithium battery earthx
Last Post: jharback
Posted On: 1 Hour Ago
Replies: 39
Views: 1,425
0 Relatively Interesting Road Sign
Last Post: sportytrace
Posted On: 1 Hour Ago
Replies: 16
Views: 164
0 Best Riding/Motorcycle Memes-Let's see 'em!
Last Post: sportytrace
Posted On: 1 Hour Ago
Replies: 251
Views: 35,639
10 Suspension pointers
Last Post: shipwreck
Posted On: 1 Hour Ago
Replies: 5
Views: 186
0 Got New Bike - 2002 Sportster Project
Last Post: jammantoo
Posted On: 1 Hour Ago
Replies: 19
Views: 564
0 Food porn
Last Post: sportytrace
Posted On: 2 Hours Ago
Replies: 919
Views: 127,550
0 Woulda, shoulda, coulda...engine guards
Last Post: Bone
Posted On: 2 Hours Ago
Replies: 16
Views: 368
0 Roads I'd like to ride.
Last Post: sportytrace
Posted On: 2 Hours Ago
Replies: 684
Views: 39,685
0 What's the difference between 2010, 2013 & 2016 XL883L
Last Post: Bone
Posted On: 2 Hours Ago
Replies: 1
Views: 38
0 Mixture screw has no effect. Need help!
Last Post: AIE10
Posted On: 2 Hours Ago
Replies: 18
Views: 585
0 Brake shoe removal/installation tool
Last Post: IronMick
Posted On: 3 Hours Ago
Replies: 2
Views: 71
0 Metal Polishing
Last Post: Hippysmack
Posted On: 3 Hours Ago
Replies: 32
Views: 1,572
6 Custom Racer with Aluminium Frame and Sportster Engine
Last Post: bochy_s
Posted On: 4 Hours Ago
Replies: 95
Views: 13,642
0 How many helmets?
Last Post: clif02
Posted On: 4 Hours Ago
Replies: 200
Views: 27,688
0 6v battery box needed
Last Post: Medyo Bastos
Posted On: 5 Hours Ago
Replies: 0
Views: 25
0 ....1
Last Post: Graywolf
Posted On: 5 Hours Ago
Replies: 4,689
Views: 233,540
0 What Sort Of Sporty Have You Got?
Last Post: Vegas_Charger_Fan
Posted On: 5 Hours Ago
Replies: 1,050
Views: 277,018
5 Jiffy Standing
Last Post: WI_duker
Posted On: 6 Hours Ago
Replies: 5
Views: 513
0 1960 XLCH in the UK
Last Post: needspeed
Posted On: 6 Hours Ago
Replies: 137
Views: 10,293
0 I've been getting some revenge.
Last Post: sportsterpaul
Posted On: 6 Hours Ago
Replies: 10
Views: 272
0 Lets see your off season builds
Last Post: sportsterpaul
Posted On: 6 Hours Ago
Replies: 1,148
Views: 125,192
0 How to keep a dry clutch dry?
Last Post: paulc
Posted On: 7 Hours Ago
Replies: 85
Views: 12,819
0 What did you do for your sporty Today?
Last Post: dodgetrucken
Posted On: 7 Hours Ago
Replies: 5,503
Views: 637,183
0 Hydraulic conversion for wet clutch
Last Post: paulc
Posted On: 7 Hours Ago
Replies: 18
Views: 1,395
10 Is it important to brush your teeth?
Last Post: CaptEvo
Posted On: 8 Hours Ago
Replies: 16
Views: 375
More...
Members Birthdays
vlmuke, wazza (47), Grizzwold (43), redtacoma31 (33)
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: 738
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 1 Week Ago
Pezed's Avatar
Pezed Pezed is offline
Biker
 
Join Date: Mar 2018
Location: Penzance, Cornwall.
Posts: 40
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 1 Week Ago
Folkie's Avatar
Folkie Folkie is offline
Brass Nut
 
Join Date: Feb 2005
Location: Western Weald
Posts: 44,683
Sportster/Buell Model: XL1200CB
Sportster/Buell Year: 2015
Other Motorcycle Model: CRF250L
Other Motorcycle Year: 2017
Reputation: 9993379
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 08:46.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2018, vBulletin Solutions Inc.
XL Forum® - Linson Media LLC