Britbike forum

Classic British SparesKlempf British PartsBaxter CycleThe Bonneville ShopLowbrow CustomsGirling Classic MotorcycleLucas Classic MotorcycleHepolite PistonsIndustrial tec supplyJob Cycle

Upgrade your membership to Premium Membership or Gold Membership or Benefactor or Vendor Membership


New Sponsor post
Bulletin March 14th 2023
by BritCycleSupply - 03/15/23 2:52 pm
New FAQ post
Disappearing User
by Boomer - 03/09/23 9:27 pm
News & Announcements
Premium members! 🌟
by Morgan aka admin - 03/21/23 6:58 pm
Gold members! ⭐️ ⭐️ ⭐️
by Morgan aka admin - 03/18/23 4:57 pm
How to guides - Technical articles
How to Straighten Your Amal Carburettor Float Bowl
by Stuart Kirk - 03/18/23 8:38 pm
Sixth edition is now out:
The Gold Star Buyer's Companion
ShoutChat
Comment Guidelines: Do post respectful and insightful comments. Don't flame, hate, spam.
Member Spotlight
BeezaBryan
BeezaBryan
Derbyshire UK
Posts: 3,765
Joined: April 2006
Top Posters(30 Days)
DavidP 83
Lannis 68
Top Likes Received (30 Days)
kevin 37
Newest Members
John R, Commando1775, Murph, Jeff Pow, Stephen Anthony
12,439 Registered Users
Forum Statistics
Forums35
Topics76,777
Posts788,039
Members12,439
Most Online230
Mar 11th, 2023
Random Gallery photo
Photo posting tutorial

Previous Thread
Next Thread
Print Thread
#896046 11/21/22 4:06 pm
Joined: May 2006
Posts: 162
Likes: 1
TriVin Offline OP
Britbike forum member
OP Offline
Britbike forum member
Joined: May 2006
Posts: 162
Likes: 1
Hi

I have just come across a Triumph service bulletin concerning the above.
It calls for an additional 12mm O ring to be inserted adjacent to the spherical washers H1529, but does not give a cross section for the O ring.
Any recommendations?

Dave


Dave
Tiger 100SS 1966
T120V 1972
Vincent Comet 1952
1 member likes this: Jon W. Whitley
Triumphs on eBay
Joined: Mar 2006
Posts: 5,581
Likes: 108
Britbike forum member
Offline
Britbike forum member
Joined: Mar 2006
Posts: 5,581
Likes: 108
H1580/97-1580 (rubber washer not an O-ring) is approximately 1/4".

https://www.feked.com/triumph-bsa-handlebar-p-clamp-rubber-buffer-washer-500-650-750cc-models.html

1 member likes this: Jon W. Whitley
Joined: May 2007
Posts: 2,752
Likes: 113
Britbike forum member
Offline
Britbike forum member
Joined: May 2007
Posts: 2,752
Likes: 113
L.A.B, wrong part Mate. This is the service update showing the addition of a 12mm O ring.
[Linked Image from i.imgur.com]
I gave it a try with the thickest O ring I could find and it made no difference. Mine are now solid mounted and Ive noticed no additional vibration just a better feeling bike.


Call up the craftsmen
Bring me the draftsmen
Build me a path from cradle to grave
And I'll give my consent
To any government
That does not deny a man a living wage
1 member likes this: kevin
Joined: Mar 2006
Posts: 5,581
Likes: 108
Britbike forum member
Offline
Britbike forum member
Joined: Mar 2006
Posts: 5,581
Likes: 108
Originally Posted by R Moulding
L.A.B, wrong part Mate. This is the service update showing the addition of a 12mm O ring.

What is the Triumph Service Bulletin number?
The only Triumph service bulletin I'm aware of pertaining to the flexible mount was the addition of the cup, steady rubber and distance piece, below (Service Bulletin No.306/ USA #1-70) :

[Linked Image from i.postimg.cc]

Perhaps it's someone's idea of a modification they've added to the drawing (especially as it's a metric O-ring size) below unless you have further information on the service bulletin number.
[Linked Image from i.postimg.cc]

1 member likes this: Lorenzo
Joined: Sep 2014
Posts: 1,520
Likes: 40
Britbike forum member
Offline
Britbike forum member
Joined: Sep 2014
Posts: 1,520
Likes: 40
It looks like an addition. The typeface is different. Might be a good idea though? I've never had problems with the rubber mounted handlebars on any Triumph I've owned, as long as all the components are as they should be and assembled in the right order.


If anything other than a blank space is visible here, something's wrong.
Joined: May 2007
Posts: 2,752
Likes: 113
Britbike forum member
Offline
Britbike forum member
Joined: May 2007
Posts: 2,752
Likes: 113
Link to Terry McDonalds site where I pinched it from
https://triumphbonneville120.co.uk/rubber-mounted-handlebar-modification.php


Call up the craftsmen
Bring me the draftsmen
Build me a path from cradle to grave
And I'll give my consent
To any government
That does not deny a man a living wage
Joined: Mar 2006
Posts: 5,581
Likes: 108
Britbike forum member
Offline
Britbike forum member
Joined: Mar 2006
Posts: 5,581
Likes: 108
Originally Posted by R Moulding
Link to Terry McDonalds site where I pinched it from
https://triumphbonneville120.co.uk/rubber-mounted-handlebar-modification.php

Ok, thanks. As there were no T140s in "1970" and says "O-ring modification added 2018" then it's not a genuine factory service bulletin.

Joined: Dec 2013
Posts: 6,721
Likes: 378
DOPE
Offline
DOPE
Joined: Dec 2013
Posts: 6,721
Likes: 378
i have a 72. i hate tbe wobbly bars.

i take all that crap out, add flat washers, and torque em diwn until it doesnt wiggle anymore


watermelons, and turnips, and a contaminator

and other stuff
Joined: May 2007
Posts: 2,752
Likes: 113
Britbike forum member
Offline
Britbike forum member
Joined: May 2007
Posts: 2,752
Likes: 113
Hadn’t noticed the T140 bit. I assumed the 2018 was when it was added to the site. Seems odd and somewhat pointless to fake a 50 year old service bulletin.


Call up the craftsmen
Bring me the draftsmen
Build me a path from cradle to grave
And I'll give my consent
To any government
That does not deny a man a living wage
Joined: Sep 2014
Posts: 1,520
Likes: 40
Britbike forum member
Offline
Britbike forum member
Joined: Sep 2014
Posts: 1,520
Likes: 40
It does seem odd that whoever created the page didn't want to take credit themselves for the O ring idea if they thought it was such a good one. But it is clearly a non-Meriden addendum, presumably by the person who posted the page on the 'net.


If anything other than a blank space is visible here, something's wrong.
Joined: Mar 2006
Posts: 5,581
Likes: 108
Britbike forum member
Offline
Britbike forum member
Joined: Mar 2006
Posts: 5,581
Likes: 108
Looks like it was a T150 service bulletin originally with some alterations:

[Linked Image from i.postimg.cc]


Moderated by  John Healy 

Link Copied to Clipboard
British Cycle SupplyMorries PlaceKlempf British PartsBSA Unit SinglesPodtronicVintage MagazineBritBike SponsorBritish Tools & FastenersBritBike Sponsor






© 1996-2023 britbike.com
Powered by UBB.threads™ PHP Forum Software 7.7.5