Dog Star
Western Thunderer
Steph,
When trying to get to grips with the details of Cl.37 bogies I was made aware of the swapping of bogies between classes 37, 50 and 55... and so I started to try to understand what variants existed. A brief summary of the different bogie types is:-
a) built up / fabricated;
b) cast.
with sub-divisions as:-
a1) headstock style 1;
a2) headstock style 2.
and
b1) no square corners for headstocks;
b2) square corners for one headstock, round corners for other headstock;
b3) square corners for each headstock.
Yes, these are simple descriptions - the descriptions are good enough for anyone who looks at photos to spot the differences. As far as I can tell, there seems to be no "favoured" type for Cl.37 other than for engines in as built condition. Indeed, no. 37 408 seemed to suffer changes in bogie variant / sub-variant every few years from when re-furbished until withdrawal. I started a thread on this subject in the Class 37 interest group of RMWeb,
here:- Class 37/4 thread on RMWeb
where there are contributions from Brian Daniels, Richard Carr and others involved in the maintenance of preserved engines.
JLTRT supplies the Cl.37 with "fabricated" bogies.. if one asks Laurie nicely, he will supply that kit with the complete "cast" bogies from the JLTRT Cl.50 kit. Just do not try to swap the sideframes because there are differences in the manner in which the brake gear is attached to the bogies / sideframes.
regards, Graham
When trying to get to grips with the details of Cl.37 bogies I was made aware of the swapping of bogies between classes 37, 50 and 55... and so I started to try to understand what variants existed. A brief summary of the different bogie types is:-
a) built up / fabricated;
b) cast.
with sub-divisions as:-
a1) headstock style 1;
a2) headstock style 2.
and
b1) no square corners for headstocks;
b2) square corners for one headstock, round corners for other headstock;
b3) square corners for each headstock.
Yes, these are simple descriptions - the descriptions are good enough for anyone who looks at photos to spot the differences. As far as I can tell, there seems to be no "favoured" type for Cl.37 other than for engines in as built condition. Indeed, no. 37 408 seemed to suffer changes in bogie variant / sub-variant every few years from when re-furbished until withdrawal. I started a thread on this subject in the Class 37 interest group of RMWeb,
here:- Class 37/4 thread on RMWeb
where there are contributions from Brian Daniels, Richard Carr and others involved in the maintenance of preserved engines.
JLTRT supplies the Cl.37 with "fabricated" bogies.. if one asks Laurie nicely, he will supply that kit with the complete "cast" bogies from the JLTRT Cl.50 kit. Just do not try to swap the sideframes because there are differences in the manner in which the brake gear is attached to the bogies / sideframes.
regards, Graham
