Fabricating chairs

[Roger Bristow]

Hello Group,

Can you help.

I need to understand what a 3PR & 4PR looks like and how I can make one up from other chairs. They are shown on a B switch diagram by Exactoscale. I am making a B6 in 10mm and have standard, bridge, slide and check chairs I could alter to get something like. A photo would be help if anyone has one. It would be good to know how the PR's work in practice.

Thanks in advance.

Roger

 

[S-Club-7]

Not quite what you asked for but will something like this help?

And a view from underneath showing the nomenclature:

 

[Roger Bristow]

Not quite what you asked for but will something like this help?
View attachment 1016

And a view from underneath showing the nomenclature:
View attachment 1017

Hello Dave,

Thanks, this is a big help! I can see clearly what I need to represent now. How nice that you have such a great selection of chairs to use.

Thanks again.

Roger