The member photo gallery is now integrated and live!!  All user albums and pictures have been ported from old gallery.


To register send an e-mail to admin@bmwr65.org and provide your location and desired user name.

Author Topic: Torquing Pinch Bolts  (Read 623 times)

Offline Air4Life

  • Lives in Foothills of Mt. Olympus
  • **
  • Posts: 206
  • With each added mile I enjoy it more.
Torquing Pinch Bolts
« on: July 13, 2012, 05:51:25 PM »
Do Pinch Bolts require a different approach when torquing them?
sold:
1983 33.8 E. Oil & Trans ?
Batt 10/06/2011
33.2 Head 35.5 (I0.005) ?(E0.009) 35.5
RearT 35.5 Spline 7/12 &
T.O.Bearing
C.U. Paste 5/12

Offline Bob_Roller

  • Global Moderator
  • Mt. Olympus Resident
  • *****
  • Posts: 9125
  • -7 hours GMT
Re: Torquing Pinch Bolts
« Reply #1 on: July 13, 2012, 06:07:00 PM »
Which bolts are you referring to, the axle, or fork tube ?
'81 R65
'82 R65 LS
'84 R65 LS
'87 Moto Guzzi V65 Lario
'02 R1150R
Riding all year long since 1993 .
I'll give up my R65, when they pry my cold dead hands from the handlebars !!!!!

Offline Air4Life

  • Lives in Foothills of Mt. Olympus
  • **
  • Posts: 206
  • With each added mile I enjoy it more.
Re: Torquing Pinch Bolts
« Reply #2 on: July 13, 2012, 07:19:05 PM »
The axle is most recently on my mind...  
sold:
1983 33.8 E. Oil & Trans ?
Batt 10/06/2011
33.2 Head 35.5 (I0.005) ?(E0.009) 35.5
RearT 35.5 Spline 7/12 &
T.O.Bearing
C.U. Paste 5/12

Offline Bob_Roller

  • Global Moderator
  • Mt. Olympus Resident
  • *****
  • Posts: 9125
  • -7 hours GMT
Re: Torquing Pinch Bolts
« Reply #3 on: July 13, 2012, 07:42:49 PM »
Just tighten to the specified torque value and don't get concerned about it .
'81 R65
'82 R65 LS
'84 R65 LS
'87 Moto Guzzi V65 Lario
'02 R1150R
Riding all year long since 1993 .
I'll give up my R65, when they pry my cold dead hands from the handlebars !!!!!

Offline Barry

  • Mt. Olympus Resident
  • ****
  • Posts: 5145
Re: Torquing Pinch Bolts
« Reply #4 on: July 14, 2012, 07:50:27 AM »
Quote
Do Pinch Bolts require a different approach when torquing them?  


Only that you hold the bolt head still and turn the nut. Torquing the other way would not necessarily result in the same clamping force. Having said that to be honest I don't always torque them up. Having used the torque wrench on them once you can get an approximate feel for how tight they should be.  They are quite efficient at clamping the axle and don't need to be over tightened.

The fork tube clamps I always use a torque wrench as there are expensive threads at risk.
« Last Edit: July 14, 2012, 07:54:46 AM by bhodgson »
Barry Cheshire, England 79 R45

Offline Air4Life

  • Lives in Foothills of Mt. Olympus
  • **
  • Posts: 206
  • With each added mile I enjoy it more.
Re: Torquing Pinch Bolts
« Reply #5 on: July 14, 2012, 08:17:15 AM »
Thanks, I appreciate your responses.  

After just recently replacing the rear tire I noticed that the amount of stretch/elongation (best description?) was significant enough that the second application of the same torque value netted a significant movement of the wrench.  

I think my technique may have been a little rushed in this situation, and I think I should be especially mindful of going more slowly in the future.

« Last Edit: July 14, 2012, 08:18:21 AM by Air4Life »
sold:
1983 33.8 E. Oil & Trans ?
Batt 10/06/2011
33.2 Head 35.5 (I0.005) ?(E0.009) 35.5
RearT 35.5 Spline 7/12 &
T.O.Bearing
C.U. Paste 5/12