It is nearer 0.014" or almost 1/64" on the overall width, probably not enough to worry about externally and as the Boxhill has internal cylinders to save confusion I would maintain internal dimensions.

Bob

Hi,

I agree with Paul, it does not really matter.

One thing to be aware of when making the axles/fitting the wheels is the clearance between the side of the wheels and the frames. (You may need to adjust some of the dimensions on the axle to give the same clearance.

Dave

hi phil,

as a builder of a 5"g terrier i would advise you to reduce the width of frame stays and cylinder block.

there is precious little room for the wheels to tilt with the 4.250" frame spacing, and such a wide spacing is totally unnecessary. alter the axleboxes accordingly and beware that the martin evans crank axle has excessive side play unless the axleboxes are not altered, plus the excessive eccentic throw causes problems in the valve gear department.

the buffer beams are also far too wide and deep when compared to fullsize.

cheers,

julian