If you register, you can do a lot more. And become an active part of our growing community. You'll have access to hidden forums, and enjoy the ability of replying and starting conversations.

BR Standard class 6 No. 72010 'Hengist' and Clan Discussion Thread

Discussion in 'Steam Traction' started by Bulleid Pacific, Nov 23, 2009.

  1. class8mikado

    class8mikado Well-Known Member

    Joined:
    Jun 1, 2009
    Messages:
    3,122
    Likes Received:
    1,113
    Occupation:
    Print Estimator/ Repository of Useless Informatio.
    Location:
    Bingley W.Yorks.
    Heritage Railway Volunteer:
    No I do not currently volunteer
    In extremis there is always Germany, US or South Africa.
     
  2. huochemi

    huochemi Well-Known Member Friend

    Joined:
    May 6, 2008
    Messages:
    2,491
    Likes Received:
    1,200
    Gender:
    Male
    Location:
    UK
    Perhaps you can try these people? ;)
     
  3. ianh1

    ianh1 Member

    Joined:
    May 10, 2018
    Messages:
    164
    Likes Received:
    462
    Gender:
    Male
    Location:
    Cumbria
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    We have tried a number of suppliers in the States without success. One British spring manufactured has proposed a 2 spring solution with an inner and outer spring. Initial calculations from the supplier look good and we are going to do our own load check calculations for confirmation
     
  4. Steve

    Steve Resident of Nat Pres Friend

    Joined:
    Oct 7, 2006
    Messages:
    10,494
    Likes Received:
    7,280
    Occupation:
    Gentleman of leisure, nowadays
    Location:
    Near Leeds
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    If you want to end up with a square section spring you start off with a trapezoidal section rod. I don't think there is any difficulty in winding the spring, I believe it is the difficulty of getting hold of the section that is the problem, nowadays. It has been suggested to me that you could machine the section required out of square bar but that would be a costly operation. I presume that you have tried the Tested Spring Co. with no success?
     
  5. ianh1

    ianh1 Member

    Joined:
    May 10, 2018
    Messages:
    164
    Likes Received:
    462
    Gender:
    Male
    Location:
    Cumbria
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    Steve. Thanks, thats interesting to know. You're probably right about getting hold of the right section material. Yes, we did approach the Tested Spring Co and they have provided the 2 spring alternative solution. We think this is probably the best solution and have worked up a design. I aim to put up a picture on the web site later on
     
  6. class8mikado

    class8mikado Well-Known Member

    Joined:
    Jun 1, 2009
    Messages:
    3,122
    Likes Received:
    1,113
    Occupation:
    Print Estimator/ Repository of Useless Informatio.
    Location:
    Bingley W.Yorks.
    Heritage Railway Volunteer:
    No I do not currently volunteer
    Do you have a link to the Upgraded web page Mr IanH. ?
     
  7. 'Clan' Hengist

    'Clan' Hengist Member

    Joined:
    Oct 23, 2014
    Messages:
    69
    Likes Received:
    202
    Gender:
    Male
    Occupation:
    Train Driver, Member Hengist Management Team
    Location:
    East Midlands
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    Just use the usual link https://www.theclanproject.org/ It works every time for me...
     
  8. ianh1

    ianh1 Member

    Joined:
    May 10, 2018
    Messages:
    164
    Likes Received:
    462
    Gender:
    Male
    Location:
    Cumbria
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    Thats the one. Ian
     
  9. 30854

    30854 Resident of Nat Pres

    Joined:
    Mar 8, 2017
    Messages:
    6,930
    Likes Received:
    7,214
    Gender:
    Male
    Occupation:
    Retired
    Location:
    Brighton&Hove
    Heritage Railway Volunteer:
    No I do not currently volunteer
    Will any eventual solution will be of potential interest to the owners of all BR 'Standards'?
     
  10. ianh1

    ianh1 Member

    Joined:
    May 10, 2018
    Messages:
    164
    Likes Received:
    462
    Gender:
    Male
    Location:
    Cumbria
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    Yes, I would have thought so. if you go to the web site and follow Construction >> Build >>Front Bogie, you can see a drawing of the proposal.
     
    30854 likes this.
  11. huochemi

    huochemi Well-Known Member Friend

    Joined:
    May 6, 2008
    Messages:
    2,491
    Likes Received:
    1,200
    Gender:
    Male
    Location:
    UK
    Thanks Ian. What loco is the bogie shown at the Mid Hants from? It appears to have independent (suspension) springs.

    (may be of interest to others) There are some images of 70000's bogie showing the side control springs at http://fraserker.com/winson/britannia_pix/very_old_page_01.htm
     
  12. ianh1

    ianh1 Member

    Joined:
    May 10, 2018
    Messages:
    164
    Likes Received:
    462
    Gender:
    Male
    Location:
    Cumbria
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    I don't know. I've been trying to find a good bogie photograph. Someone gave this to me and I wanted illustrate how the centre slide moves - it seemed to do the job
     
  13. huochemi

    huochemi Well-Known Member Friend

    Joined:
    May 6, 2008
    Messages:
    2,491
    Likes Received:
    1,200
    Gender:
    Male
    Location:
    UK
    I think it may be a Maunsell bogie. Other thoughts on the side control spring issue:

    1. Have you tried https://www.roehrs-springs.com/springs-products/compression-springs/flat-wire-compression-springs ?
    2. Perhaps consider machining from solid 6.25 inch diameter bar (drill a hole, fit a former (core) and then screw cut (or thread mill) through to the former) before hardening and tempering.
    3. Use a stack of Belleville washers.
     
  14. std tank

    std tank Member

    Joined:
    Sep 20, 2005
    Messages:
    3,581
    Likes Received:
    730
    Gender:
    Male
    Occupation:
    Retired
    Location:
    Liverpool
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    That is a very good and interesting find. Thanks for the info.
     
  15. ianh1

    ianh1 Member

    Joined:
    May 10, 2018
    Messages:
    164
    Likes Received:
    462
    Gender:
    Male
    Location:
    Cumbria
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    Thanks, I've passed it on to our engineering group. Ian
     
  16. class8mikado

    class8mikado Well-Known Member

    Joined:
    Jun 1, 2009
    Messages:
    3,122
    Likes Received:
    1,113
    Occupation:
    Print Estimator/ Repository of Useless Informatio.
    Location:
    Bingley W.Yorks.
    Heritage Railway Volunteer:
    No I do not currently volunteer
    There is a good chance of a photo in ' Britannia, birth of a locomotive '. Will bring it along to the Open day if there is one.
     
  17. std tank

    std tank Member

    Joined:
    Sep 20, 2005
    Messages:
    3,581
    Likes Received:
    730
    Gender:
    Male
    Occupation:
    Retired
    Location:
    Liverpool
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    I have made an enquiry with Roehrs regarding the production of LMS/BR rectangular section pony truck side control springs. They got back to me fairly quickly. Their answer "We are not capable of producing a spring from such a massive wire profile".
     
  18. huochemi

    huochemi Well-Known Member Friend

    Joined:
    May 6, 2008
    Messages:
    2,491
    Likes Received:
    1,200
    Gender:
    Male
    Location:
    UK
    That's a pity. I found them by Googling images for "flat section helical spring".
     
  19. ianh1

    ianh1 Member

    Joined:
    May 10, 2018
    Messages:
    164
    Likes Received:
    462
    Gender:
    Male
    Location:
    Cumbria
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    Yes, that was the reply we got. They responded very quickly.

    There isn't a good picture of the front bogie in the "Britannia" book. There is one of the trailing truck (or pony truck as Geoff likes to call it)
     
  20. ianh1

    ianh1 Member

    Joined:
    May 10, 2018
    Messages:
    164
    Likes Received:
    462
    Gender:
    Male
    Location:
    Cumbria
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    huochemi - thanks for the post

    Item 1 has resulted in a "no can do" response from the supplier. They were very quick in responding
    Items 2 and 3 were run past our certification contact and were rejected.
     

Share This Page