B1 - 61161

[65179]

Mmmm. Four, I think, Simon.
The preserved 1264, that I based my speedo mounting design on, uses 4 slot headed countersunk screws that are flush with the outside face of the valence. I thought wouldn't really show on a 4 mm scale model, so didn't bother. However, checking photos of loco in service, in the Yeadon book, seem to show snap head fixings, which definitely do show. Have you any decent , side-on, photos or drawing showing the attachment arrangements?
Just goes to show the dangers of using preserved locos for information.
Dave.

I was going off this image I posted before:

Post in thread 'B1 - 61161' B1 - 61161

but now you mention it the last rivet is probably in shadow.

Simon

 

[65179]

 

[65179]

There's also this Old Ganian Flickr image:

https://flic.kr/p/TtpC5E

It was only a joke, it's quite questionable whether adding them is worth it!

Simon

 

[Dave Holt]

Thanks for the additional photos, Simon.

Fully appreciated as a joke, but it has made me think that the original snap head fixings are quite noticeable. So, I've designed a simple drilling jig that locates on the speedometer mount and up against the protruding footplate edge. Whether or not I use it is for a later decision as the holes would be rather close to the edge of the footplate plastic moulding, with the risk of breaking out. We'll see.
I'm trying to get down to progressing the tender and have added some lead ballast to the chassis, fixed using slow setting Araldite - don't want any risk of it coming loose in future.

Dave.