The Sportster and Buell Motorcycle Forum - The XLFORUM®
 

Go Back   The Sportster and Buell Motorcycle Forum - The XLFORUM® > SPORTSTER MOTORCYCLE FORUM > Sportster Motorcycle Drivetrain > Sportster Motorcycle Transmission, Clutch, Primary & Secondary Drive
XLF Blogs XLF Arcade XLF Disclaimer/Privacy Statement/Terms Of Use

Notices

Sportster Motorcycle Transmission, Clutch, Primary & Secondary Drive Transmission, Clutch and primary or secondary drive problems, advice, and/or how tos.

Active Threads
0 Triple tree cover question
Last Post: RandallM
Posted On: 10 Minutes Ago
Replies: 0
Views: 1
6 old dude new here
Last Post: Butch 73
Posted On: 47 Minutes Ago
Replies: 17
Views: 428
0 Upgrade carb kit
Last Post: IronMick
Posted On: 54 Minutes Ago
Replies: 9
Views: 226
0 Keep & Kill
Last Post: Crusty
Posted On: 2 Hours Ago
Replies: 32,521
Views: 1,952,559
0 Shovster build take2
Last Post: sungod
Posted On: 3 Hours Ago
Replies: 376
Views: 56,799
0 Bobtailing a sportster
Last Post: Ted Town
Posted On: 5 Hours Ago
Replies: 175
Views: 85,150
0 Food porn
Last Post: Stairman
Posted On: 7 Hours Ago
Replies: 2,989
Views: 805,638
0 Peanut, 3.3 or 4.5 gas tank ?
Last Post: Graywolf
Posted On: 11 Hours Ago
Replies: 266
Views: 95,265
0 springer forks rubbermount 04+
Last Post: Butch 73
Posted On: 11 Hours Ago
Replies: 0
Views: 51
0 video & pics
Last Post: cal43
Posted On: 13 Hours Ago
Replies: 2,209
Views: 234,705
0 This is gonna hurt.
Last Post: cal43
Posted On: 14 Hours Ago
Replies: 10,034
Views: 2,503,327
0 🖥️Cyber Monday!🖥️ Big Savings Inside💰Open for Details!
Last Post: DK Custom
Posted On: 14 Hours Ago
Replies: 0
Views: 35
0 Hottie of the day, no nudity.
Last Post: cal43
Posted On: 14 Hours Ago
Replies: 40,632
Views: 5,479,385
0 Hot Chicks on Hot Bikes
Last Post: cal43
Posted On: 14 Hours Ago
Replies: 13,546
Views: 3,617,017
0 Official XL Forum Random Image Thread (NO NUDITY!)
Last Post: cal43
Posted On: 14 Hours Ago
Replies: 56,135
Views: 9,694,441
0 Hot Rods, Rat Rods, and Customs.
Last Post: cal43
Posted On: 14 Hours Ago
Replies: 5,586
Views: 1,340,382
6 Secret photo"s of folkies loft
Last Post: cal43
Posted On: 15 Hours Ago
Replies: 1,643
Views: 308,467
0 first electrical problem
Last Post: denguy
Posted On: 15 Hours Ago
Replies: 7
Views: 326
0 Poll: Do you change tires yourself?
Last Post: Nibelungen
Posted On: 17 Hours Ago
Replies: 163
Views: 54,709
0 Harley super micron 5 oil filter
Last Post: shanneba
Posted On: 17 Hours Ago
Replies: 1
Views: 75
0 How do I remove the Rear Caliper?
Last Post: rejeanprimeau
Posted On: 18 Hours Ago
Replies: 7
Views: 223
0 The Strociek Project
Last Post: Ferrous Head
Posted On: 18 Hours Ago
Replies: 100
Views: 11,492
7 Hi from Spain
Last Post: juzyHD
Posted On: 22 Hours Ago
Replies: 10
Views: 189
0 is a buell a harley
Last Post: Brad
Posted On: 1 Day Ago
Replies: 198
Views: 45,649
0 Do you run MAXIMUM PSI?!?
Last Post: Tyler45
Posted On: 1 Day Ago
Replies: 276
Views: 53,561
0 picked up a nail
Last Post: RandallM
Posted On: 1 Day Ago
Replies: 14
Views: 741
0 How Much Money Has Being An XL Forum Member Saved You?
Last Post: Highly-Dangerous
Posted On: 1 Day Ago
Replies: 166
Views: 81,402
0 dyna rear on 05 1200c
Last Post: Butch 73
Posted On: 1 Day Ago
Replies: 0
Views: 89
5 Tire Pressure?
Last Post: Tomcatt
Posted On: 1 Day Ago
Replies: 52
Views: 10,064
0 Spokes or Mags
Last Post: Nibelungen
Posted On: 1 Day Ago
Replies: 349
Views: 93,456
More...
Members Birthdays
Reply
 
Share Thread Tools Display Modes
  #31  
Old 27th September 2022
BKB's Avatar
BKB BKB is offline
XL FORUM TEAM MEMBER
 
Join Date: Nov 2005
Location: North cental Ohio
Posts: 2,619
Sportster/Buell Model: XL1200C
Sportster/Buell Year: 2009
Sportster/Buell Model #2: XL1200L
Sportster/Buell Year #2: 2009
Reputation: 5809049
BKB has a reputation beyond reputeBKB has a reputation beyond reputeBKB has a reputation beyond reputeBKB has a reputation beyond reputeBKB has a reputation beyond reputeBKB has a reputation beyond reputeBKB has a reputation beyond reputeBKB has a reputation beyond reputeBKB has a reputation beyond reputeBKB has a reputation beyond reputeBKB has a reputation beyond repute
Default

IIRC, the main thing with loosening the belt was that on the bikes with the 13.5" shocks , the swing arm was below the line-up point of the pulleys & swing arm pivot when at normal ride height. When you loaded the rear end during cornering & then ran over a bump or uneven pavement, the swing arm would go past that point & back as you cornered & the fact that the swing arm was attached to the rear engine mounts would pull the swing arm out of alignment enough to induce a wallowing effect. Unsettling the bike at speed, in a curve could be uncomfortable, if not dangerous for some folks. Loosening the belt prevented that deflection of the rear mounts & eliminated the instability. Of course my memory could be faulty, so don't take this as gospel.
__________________
Brian '09 1200C (black of course), 19" front wheel, det. windshield, Sundowner, mini apes, Big Sucker, 12.5" Progressive 412's, Intiminators, Gronk mod
I didn't buy a Sportster 'cause I wanted a Harley... I got a Harley 'cause I wanted a SPORTSTER!!!
Reply With Quote
  #32  
Old 28th September 2022
sportsterpaul's Avatar
sportsterpaul sportsterpaul is offline
XL FORUM LIFE MEMBER
 
Join Date: Jan 2009
Location: In a swamp/Michigan
Posts: 16,660
Sportster/Buell Model: XL1460C
Sportster/Buell Year: 2000
Sportster/Buell Model #2: XL1200R
Sportster/Buell Year #2: 2006
Other Motorcycle Model: XL1200R
Other Motorcycle Year: 2004
Reputation: 16741354
sportsterpaul has a reputation beyond reputesportsterpaul has a reputation beyond reputesportsterpaul has a reputation beyond reputesportsterpaul has a reputation beyond reputesportsterpaul has a reputation beyond reputesportsterpaul has a reputation beyond reputesportsterpaul has a reputation beyond reputesportsterpaul has a reputation beyond reputesportsterpaul has a reputation beyond reputesportsterpaul has a reputation beyond reputesportsterpaul has a reputation beyond repute
Default

Golden rule is looser is better. There was some testing from another forum where a couple guys experimented with different belt tension. Their conclusion was that you could not run it too loose. They had backed if off to where the bottom run was flopping tremendously . Never jumped a tooth, just ran. Mine are loose, couldn’t tell just how much.
__________________
Keep smiling cause it makes everyone nervous!

Everything happens for a reason. Sometimes the reason is that you’re stupid and you make bad decisions.....

The XL Forum Sportsterpedia:
http://sportsterpedia.com/doku.php/start
Reply With Quote
  #33  
Old 2nd October 2022
ZCarFan ZCarFan is offline
Flat Track Racer
 
Join Date: Sep 2017
Posts: 226
Sportster/Buell Model: XLH 883
Sportster/Buell Year: 2000
Other Motorcycle Model: Road King Custom
Other Motorcycle Year: 2004
Reputation: 456979
ZCarFan has a reputation beyond reputeZCarFan has a reputation beyond reputeZCarFan has a reputation beyond reputeZCarFan has a reputation beyond reputeZCarFan has a reputation beyond reputeZCarFan has a reputation beyond reputeZCarFan has a reputation beyond reputeZCarFan has a reputation beyond reputeZCarFan has a reputation beyond reputeZCarFan has a reputation beyond reputeZCarFan has a reputation beyond repute
Default

I'd heard years ago that tires with Aramid belting shrink as they heat vs other belt materials which allow the carcass to grow as they warm up. Just looked it up...

https://www.linearmotiontips.com/whe...-applications/

"Although Kevlar is suitable for a wide range of temperatures, it has a negative thermal coefficient of expansion, meaning that it shrinks as the temperature rises and lengthens as it cools. Since this behavior is the opposite of most other machine components (especially those made of metal) — which expand as temperature increases and contract as temperature decreases — Kevlar-reinforced belts may not be suitable in environments with significant temperature fluctuations."
Reply With Quote
  #34  
Old 3rd October 2022
John Harper John Harper is offline
Senior Master Custom Bike Builder
 
Join Date: Apr 2012
Posts: 4,344
Sportster/Buell Model: 1250
Sportster/Buell Year: 1991
Reputation: 3375049
John Harper has a reputation beyond reputeJohn Harper has a reputation beyond reputeJohn Harper has a reputation beyond reputeJohn Harper has a reputation beyond reputeJohn Harper has a reputation beyond reputeJohn Harper has a reputation beyond reputeJohn Harper has a reputation beyond reputeJohn Harper has a reputation beyond reputeJohn Harper has a reputation beyond reputeJohn Harper has a reputation beyond reputeJohn Harper has a reputation beyond repute
Default

Quote:
Originally Posted by ZCarFan View Post
I'd heard years ago that tires with Aramid belting shrink as they heat vs other belt materials which allow the carcass to grow as they warm up. Just looked it up...

https://www.linearmotiontips.com/whe...-applications/

"Although Kevlar is suitable for a wide range of temperatures, it has a negative thermal coefficient of expansion, meaning that it shrinks as the temperature rises and lengthens as it cools. Since this behavior is the opposite of most other machine components (especially those made of metal) — which expand as temperature increases and contract as temperature decreases — Kevlar-reinforced belts may not be suitable in environments with significant temperature fluctuations."
Well, that seems to provide an explanation, thanks!

John
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



All times are GMT +1. The time now is 05:44.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2022, vBulletin Solutions Inc.
XL Forum® - Linson Media LLC