Greeves Riders Association Forums   Greeves Riders Association Forums Not signed up? Send an email to contact@greeves-riders.org.uk requesting access.
Find out more about GRA membership and how to join here.
   

Go Back   Greeves Riders Association Forums > Machine-specific forums > Trials machines

Reply
 
Thread Tools Display Modes
  #1  
Old 15/03/2018, 08:02 PM
Stuart Wigmore Stuart Wigmore is offline
GRA Member
 
Join Date: Feb 2013
Location: Pitney, Somerset
Posts: 49
Default 1958 ta

Hi All
Can anyone please advise me ref the top fork yoke, straight or cranked ?
Reply With Quote
  #2  
Old 15/03/2018, 08:59 PM
garybam4711 garybam4711 is offline
GRA Member
 
Join Date: Oct 2015
Location: Gloucester
Posts: 90
Default Fork top

My TAS has a straight top
Gary
Reply With Quote
  #3  
Old 19/03/2018, 11:02 AM
Stuart Wigmore Stuart Wigmore is offline
GRA Member
 
Join Date: Feb 2013
Location: Pitney, Somerset
Posts: 49
Default

Hi Gary
Do you know if straight is correct, TC and TD are cranked!
Stuart
Reply With Quote
  #4  
Old 19/03/2018, 12:04 PM
garybam4711 garybam4711 is offline
GRA Member
 
Join Date: Oct 2015
Location: Gloucester
Posts: 90
Default

sorry i dont
gary
Reply With Quote
  #5  
Old 19/03/2018, 02:01 PM
Andy Briggs Andy Briggs is offline
GRA Member
 
Join Date: Apr 2010
Posts: 59
Default

Hi Stuart,

Mine is straight. As others have said, I don't know for sure whether this is standard, but I've no reason to think otherwise. (Mine is a '58 model, but delivered in Nov '57).
Reply With Quote
  #6  
Old 19/03/2018, 10:07 PM
Brian Thompson's Avatar
Brian Thompson Brian Thompson is offline
GRA Member
 
Join Date: Dec 2009
Location: Gloucestershire, UK. Bikes owned; Greeves 24TCS, Yamaha FZS1000S....and a monkey....
Posts: 2,821
Arrow Greeves Crown Plates info......

Hi Stuart,

The answer is that TA crown plates were straight.

The 'cranked' crown plates were introduced on the TCS for the 1960 model year to give 20% more steering lock than the previous model. At the same time the beam was recast to give a 2% steeper steering head angle, and these changes resulted in a wheelbase reduction from 52" to 51 1/4".

There is more useful related info on crown plates and steering head geometry on this thread....http://www.greeves-riders.org.uk/for...ng+head+angles

Hope it helps.

Brian.
Reply With Quote
  #7  
Old 22/03/2018, 12:24 PM
Stuart Wigmore Stuart Wigmore is offline
GRA Member
 
Join Date: Feb 2013
Location: Pitney, Somerset
Posts: 49
Default TA Fork Top Yoke

Hi Brian
Thank you that is a great help, onward and upward!

regards

Stuart
Reply With Quote
  #8  
Old 22/03/2018, 12:32 PM
Brian Thompson's Avatar
Brian Thompson Brian Thompson is offline
GRA Member
 
Join Date: Dec 2009
Location: Gloucestershire, UK. Bikes owned; Greeves 24TCS, Yamaha FZS1000S....and a monkey....
Posts: 2,821
Thumbs up Crown Plate info etc.....

My pleasure Stuart, glad the info was of help to you.

Brian.
Reply With Quote
Reply

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. The time now is 09:59 PM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.