The Sportster and Buell Motorcycle Forum - The XLFORUM®
 

Go Back   The Sportster and Buell Motorcycle Forum - The XLFORUM® > BUELL MOTORCYCLE FORUM > Buell Motorcycle Top End
XLF Blogs XLF Arcade XLF Disclaimer/Privacy Statement/Terms Of Use

Active Threads
0 Official XL Forum Random Image Thread (NO NUDITY!)
Last Post: Graywolf
Posted On: 1 Minute Ago
Replies: 47,749
Views: 7,649,034
0 Current projects (2 of them anyway)
Last Post: Iron Mike
Posted On: 2 Minutes Ago
Replies: 9
Views: 156
0 Highway cruise speed
Last Post: lespaul6
Posted On: 7 Minutes Ago
Replies: 14
Views: 961
0 Adjusting Drive Belt While On A Lift
Last Post: Folkie
Posted On: 14 Minutes Ago
Replies: 4
Views: 91
0 N65C or N65A
Last Post: lespaul6
Posted On: 18 Minutes Ago
Replies: 17
Views: 1,103
0 Tappet blocks and tappets
Last Post: Scott
Posted On: 33 Minutes Ago
Replies: 24
Views: 784
0 Real Horse Power Difference in Head Treatments
Last Post: Highly-Dangerous
Posted On: 45 Minutes Ago
Replies: 35
Views: 567
0 Turbo Iron 883
Last Post: Ghostdog
Posted On: 47 Minutes Ago
Replies: 41
Views: 1,916
0 Need some guidance on installing a traxxion dynamics suspension on my front forks
Last Post: Bryan1976
Posted On: 51 Minutes Ago
Replies: 13
Views: 295
0 "S" model specific Q&A
Last Post: Buellbomb
Posted On: 1 Hour Ago
Replies: 1,990
Views: 405,372
0 Chinese S&S carbs
Last Post: Steve9
Posted On: 1 Hour Ago
Replies: 58
Views: 2,652
0 HOW BIG? Mikuni on a 1250 kit?
Last Post: sportsterdoc
Posted On: 1 Hour Ago
Replies: 31
Views: 636
12 Crankcase breathing?
Last Post: DJCBlue
Posted On: 1 Hour Ago
Replies: 3
Views: 78
0 Hammer 1250 kit with fp3
Last Post: Pagey
Posted On: 1 Hour Ago
Replies: 4
Views: 716
0 Keep & Kill
Last Post: Crusty
Posted On: 2 Hours Ago
Replies: 17,519
Views: 1,014,453
0 ....1
Last Post: Graywolf
Posted On: 2 Hours Ago
Replies: 5,569
Views: 324,068
0 Sportster Fork Upgrade
Last Post: Redbeard2
Posted On: 2 Hours Ago
Replies: 67
Views: 15,846
0 Dual Speedo/Tach Gauge Mount Failure
Last Post: IXL2Relax
Posted On: 3 Hours Ago
Replies: 8
Views: 219
0 Hottie of the day, no nudity.
Last Post: Stairman
Posted On: 3 Hours Ago
Replies: 20,074
Views: 2,045,701
0 Do you use a bike cover?
Last Post: Old Rocker
Posted On: 5 Hours Ago
Replies: 24
Views: 6,822
0 Rear sets?
Last Post: bordens
Posted On: 5 Hours Ago
Replies: 30
Views: 11,718
0 Hardtail 01 883C conversation.
Last Post: Vic8028
Posted On: 6 Hours Ago
Replies: 17
Views: 1,150
0 What did you do for your sporty Today?
Last Post: cal43
Posted On: 7 Hours Ago
Replies: 6,980
Views: 991,212
0 Ground Up Beginner Build
Last Post: Paul.W
Posted On: 8 Hours Ago
Replies: 6
Views: 203
0 My Rear Master Cylinder Re-build
Last Post: PetesPonies
Posted On: 10 Hours Ago
Replies: 131
Views: 70,061
0 Screamin Eagle slip-ons too loud
Last Post: Blackmagellan
Posted On: 10 Hours Ago
Replies: 24
Views: 10,320
0 Clutch springs
Last Post: BigMek
Posted On: 11 Hours Ago
Replies: 4
Views: 154
0 Coil polarity
Last Post: ryder rick
Posted On: 12 Hours Ago
Replies: 1
Views: 86
0 Snippets
Last Post: sportsterpaul
Posted On: 12 Hours Ago
Replies: 152
Views: 14,239
0 New Guy with Experienced Bike
Last Post: Bikeaholic
Posted On: 13 Hours Ago
Replies: 17
Views: 280
More...
Members Birthdays
PEISprotster (68), 2009XR (66), Briank (61), bbj6635 (59), Reddog225 (48), larre1973, Irondrake77 (41), picowatt (40), Jeffrey99 (39), namesnick (39)
Reply
 
Share Thread Tools Display Modes
  #1  
Old 13th June 2014
purpony's Avatar
purpony purpony is offline
Biker
 
Join Date: Jun 2009
Posts: 55
Sportster/Buell Model: Buell X1 Lightning
Sportster/Buell Year: 1999
Reputation: 55253
purpony is a splendid one to beholdpurpony is a splendid one to beholdpurpony is a splendid one to beholdpurpony is a splendid one to beholdpurpony is a splendid one to beholdpurpony is a splendid one to beholdpurpony is a splendid one to beholdpurpony is a splendid one to beholdpurpony is a splendid one to beholdpurpony is a splendid one to beholdpurpony is a splendid one to behold
Default rocker box bolt keeps snapping

I installed Buell XB rocker boxes on my Buell X1 a few years back and when i did the rear cylinder rear 1/4-20 grade 8 HD hex bolt snapped/sheered off on me. I have had my rockers off all winter and machined a drill guide and drilled this bolt out, and put a helicoil in the head. So i am installing the rocker boxes last night and torquing the bolts to spec and in the same location, the bolt snaps again!!! Im torquing them to what my service manual calls out - 10-14 ft/lbs. Pulled it all apart and lucky the way the bolt snapped I was able to just spin it out with pliers. Its a 1/4-20 grade 8 HD bolt and it snaps at 10 ft/lbs of tq, what gives?
Reply With Quote
  #2  
Old 13th June 2014
cHarley04's Avatar
cHarley04 cHarley04 is offline
Senior Chief Master Mechanic
 
Join Date: Aug 2007
Location: Flori-duh
Posts: 957
Sportster/Buell Model: XL1200C/1250
Sportster/Buell Year: 04
Reputation: 201555
cHarley04 has a brilliant futurecHarley04 has a brilliant futurecHarley04 has a brilliant futurecHarley04 has a brilliant futurecHarley04 has a brilliant futurecHarley04 has a brilliant futurecHarley04 has a brilliant futurecHarley04 has a brilliant futurecHarley04 has a brilliant futurecHarley04 has a brilliant futurecHarley04 has a brilliant future
Default

Just some thoughts/questions.
Are you sure the wrench is in calibration?
Torque wrenches are inherently not real accurate at the bottom or top of their range. For accuracy, you want to work in the middle of the wrenches range, not at either end.
For 10-12 ft/lbs, the better wrench choice might be something like a 20-250 IN/lbs wrench, torquing at 120-144 IN/lbs.
Are you using any extensions on the wrench and not recalculating for the extension factor?
__________________
Hammer 1250-Smash Heads-560 Cams -Hurricane Flow AC -Supertrapp Supermeg -TC88A
Reply With Quote
  #3  
Old 13th June 2014
Bob s hog's Avatar
Bob s hog Bob s hog is offline
Senior Custom Bike Builder
 
Join Date: May 2011
Location: spencerville
Posts: 2,611
Sportster/Buell Model: sportster
Sportster/Buell Year: 2003
Sportster/Buell Model #2: 1200 xl sportster custom
Sportster/Buell Year #2: 03
Other Motorcycle Model: 1200 low sportster
Other Motorcycle Year: 06
Reputation: 48979
Bob s hog is a splendid one to beholdBob s hog is a splendid one to beholdBob s hog is a splendid one to beholdBob s hog is a splendid one to beholdBob s hog is a splendid one to beholdBob s hog is a splendid one to beholdBob s hog is a splendid one to beholdBob s hog is a splendid one to beholdBob s hog is a splendid one to beholdBob s hog is a splendid one to beholdBob s hog is a splendid one to behold
Default

better yet are you bottoming out the bolt g8 bolts are pretty taught . as stated above good tq wrench are a must.
Reply With Quote
  #4  
Old 13th June 2014
aswracing's Avatar
aswracing aswracing is offline
A Million Facts & Figures
 
Join Date: Jan 2005
Location: Famous Potatoes
Posts: 10,183
Sportster/Buell Model: XL883
Sportster/Buell Year: 2007
Sportster/Buell Model #2: Buell Cyclone
Sportster/Buell Year #2: 1999
Reputation: 2979240
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

ft-lb torque wrenches aren't real accurate that far down the scale.

I use an in-lbs torque wrench and torque to 150 and they don't break.
__________________
Click Here to Contact Me

Reply With Quote
  #5  
Old 1st August 2014
Wheelies Wheelies is offline
Greasemonkey
 
Join Date: Aug 2014
Posts: 120
Sportster/Buell Model: XL883
Sportster/Buell Year: 2003
Reputation: 10
Wheelies is an unknown quantity at this point
Default

The same happened to me on my front rocker box. I agree with the idea that torque wrenches suck at those low torque specs. My wrench clicked over fine on the rest of them but the very last one snapped off.
Reply With Quote
  #6  
Old 1st August 2014
Folkie's Avatar
Folkie Folkie is online now
Brass Nut
 
Join Date: Feb 2005
Location: Western Weald
Posts: 46,514
Sportster/Buell Model: XL1200CB
Sportster/Buell Year: 2015
Other Motorcycle Model: CRF250L
Other Motorcycle Year: 2017
Reputation: 15948944
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

Torque wrenches are accurate at the top of the range, but not at the bottom.
__________________
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
  #7  
Old 1st August 2014
rejeanprimeau's Avatar
rejeanprimeau rejeanprimeau is offline
XL FORUM TEAM MEMBER
 
Join Date: Jun 2011
Location: On a farm
Posts: 6,304
Sportster/Buell Model: XL77.2R
Sportster/Buell Year: 2006
Reputation: 2500401
rejeanprimeau has a reputation beyond reputerejeanprimeau has a reputation beyond reputerejeanprimeau has a reputation beyond reputerejeanprimeau has a reputation beyond reputerejeanprimeau has a reputation beyond reputerejeanprimeau has a reputation beyond reputerejeanprimeau has a reputation beyond reputerejeanprimeau has a reputation beyond reputerejeanprimeau has a reputation beyond reputerejeanprimeau has a reputation beyond reputerejeanprimeau has a reputation beyond repute
Default

I use a cheap beam type torque wrench ; never break bolt.

I love those clicker, I make money welding holes busted being over torque by clicker.

Keep clicking so we the machine shops and welders make money with your mistakes.

A 19.00$ sears beam type 3/8 is perfect for that job.
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 15:07.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
XL Forum® - Linson Media LLC