Jump to content




Photo

Peco Bullhead Points: in the flesh

Peco bullhead points turnouts SL-U1189




  • Please log in to reply
981 replies to this topic

#976 ThaneofFife

ThaneofFife

    Member


  • Members
  • PipPip
  • 2,209 posts
  • Location87033 a Beast

Posted 18 June 2018 - 07:17

the line 83 geometry is very nice and just about passes with modern mk3 coaches with minimum end swing (if space weren't an issue youd hand bulld to longer specs).  


  • Agree x 2



#977 Joseph_Pestell

Joseph_Pestell

    Member


  • Members
  • PipPip
  • 6,478 posts
  • LocationNorth Dorset

Posted 18 June 2018 - 07:44

All the more perplexing as they made a decent job of the code 83 #6 double slip...

 

attachicon.gifpost-238-0-86420300-1487767568.jpg

 

Are you sure that is 43" radius? It does not look it.



#978 Harlequin

Harlequin

    Member


  • Members
  • PipPip
  • 538 posts
  • LocationThe Mid-West - of Devon

Posted 18 June 2018 - 07:50

I think the Peco designers could retain the overall dimensions of the slip crossings while increasing the radii of the slip curves to ~915mm, I.e. "Medium" radius.

 

That would be quite a neat solution because the slips would still plug into the Streamline system in the same way as the Code 75/100 slips and crossing. They would almost be drop-in replacements except for the slightly increased width at the "neck" and new positions for tiebars.

 

Having said that, the tiny image in RM this month looks disappointingly like small radius...


Edited by Harlequin, 18 June 2018 - 07:51 .

  • Agree x 1
  • Like x 1

#979 Dr Gerbil-Fritters

Dr Gerbil-Fritters

    Member


  • Members
  • PipPip
  • 3,630 posts

Posted 18 June 2018 - 08:28

Are you sure that is 43" radius? It does not look it.

 

I don't know, I didn't label the image... but Hattons lists the #6 turnouts as 1092mm, which is 42.99 inches.

 

Technically, US turnouts don't have a radius as the diverging route is not a continuous curve.  


Edited by Dr Gerbil-Fritters, 18 June 2018 - 08:35 .


#980 AGR Model Store

AGR Model Store

    Member


  • Members
  • PipPip
  • 244 posts
  • Location2G

Posted 18 June 2018 - 08:51

Opps....

 

35645597_10156043712134702_2881276783297036288_n.jpg

 

 

 


  • Informative/Useful x 1
  • Funny x 1

#981 Zunnan

Zunnan

    Member


  • Members
  • PipPip
  • 278 posts
  • LocationW. Midlands

Posted 18 June 2018 - 09:02

Only a minor slip up...


  • Funny x 2
  • Agree x 1

#982 coachmann

coachmann

    Member


  • Members
  • PipPip
  • 19,818 posts

Posted 18 June 2018 - 09:09

The Peco Code 83 No.6 point has a nominal radius of 1092mm and an angle of of 9.5. The diamond is also 9.5 to create a double junction etc. So the double slip is based based on the diamond and is also 9.5.  

 

Peco Code 75 points overlaid on top of Peco Code 83 to show the different angles....

WEB Peco 75 & 83 angles.jpg


Edited by coachmann, 18 June 2018 - 09:33 .

  • Informative/Useful x 2












Also tagged with one or more of these keywords: Peco, bullhead, points, turnouts, SL-U1189