Second Generation DMU wheel diameters

[geoff_nicholls]

What are the wheel diameters of the class 142, 150, 153 and 155 DMU's?

the BREL prototype which lead to the 141-144 had 2' 7 1/2" dia wheels. The only drawing I have of a 142, by Ian Beattie, agrees with that.
A drawing I've seen of a class 155 looks like about 830mm or 2' 9" but I've never seen an explicit dimension.
I'm building a peter Clark 150/2 which was supplied with 21mm wheels, and ordered a PRMRP Pacer, which may be supplied with the same.

 

[Genghis]

My recollection is that 840mm was the standard new wheel diameter for most of that generation. 840mm is one of the UIC standard sizes, but I have not got evidence that it was used for the sprinters.

 

[geoff_nicholls]

thanks Genghis, I've also had a response from the DEMU forum saying that 840 is correct for sprinters.

 

[AndyB]

Geoff,

Sorry for delayed reply.
Just pulled a couple of wheelset data sheets off PADS to check diameters and they are as follows:
Class 142 - new 840mm, last turn 789mm, scrap 776mm
For Classes 150, 153 & 155 - new 800mm, last turn 747mm, scrap 734mm

Hope that helps.
Andy