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Post by durhambuilder on Dec 12, 2007 21:09:20 GMT
would somebody please be kind enough to email me a scan of the expansion link drawing. I'm building an AJAX and after half a dozen duff attempts I've had enough and thought an off the shelf Simplex set from Model engineers laser may do. How significant are things like radius of slot etc.
Thanks
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Post by baggo on Dec 12, 2007 22:13:50 GMT
I've already got the Simplex stuff scanned so I can send you the details if you let me have your email address (email me). However, unless the Ajax valve gear is identical to Simplex the expansion links won't be suitable as they are designed for the particular loco valve layout. The radius of the slot must be the same as the length of the radius arm and the position of the driving pin connected to the eccentric rod is very critical with regards to distance from the expansion link pivot and the backset.
I am sure Malcolm High could probably produce the correct expansion links for Ajax from a drawing but there may be a long wait as he is only a one man concern and probably very busy! It is possible he already has the details on his database.
John
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Post by durhambuilder on Dec 14, 2007 12:08:57 GMT
Many thanks for the offer, I think at the moment I can see a way around the problem and use the proper Ajax ones, Having had a closer look at some of the simplex's (whats the plural for a group of simplex locos??) on Station road steam website in various stages of undress I don't think they'll be remotely suitable.
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